Yang Guang Resin Chemical Co., Ltd

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Unpacking the Story of MVAD Resin: A Deep Dive

Historical Development

The evolution of MVAD resin—hydroxyl-modified vinyl chloride/vinyl acetate terpolymer—tracks alongside global industry’s push for safer and more adaptable materials. Scientists didn’t stumble onto this blend overnight. In the 1960s, as manufacturing demanded improved flexibility and adhesion, chemists tweaked polyvinyl chloride (PVC) by introducing vinyl acetate units; these mixes broke ground for applications in coatings, adhesives, and specialty inks. The next big step came with hydroxyl-modified versions, making resins even more reactive and versatile. Patents and journals started to fill up with formulations matching growing regulatory and performance demands. So, MVAD’s story intertwines with the ongoing chase for materials that balance handling ease, shelf life, cost, and compliance. Each wave of improvements built off lessons learned in factories, labs, and sometimes from costly production mishaps. For anyone looking to understand the drive behind specialty resins, the twists and turns in MVAD’s development highlight the industry’s relentless problem-solving.

Product Overview

MVAD resin is often a white or off-white powder or fine granule; folks who handle it in plants comment on the slight vinyl odor and the smooth, almost chalky texture. It can swell notably in organic solvents, lending itself well to high-solids solutions without tipping over into gummy messes. Years in adhesive formulation have shown me how differently MVAD performs compared to plain PVC or traditional copolymers; its blend of flexibility and adhesion delivers results in applications like printing inks, plastic coatings, and moisture-barrier layers. As production facilities shift toward lower-VOC and safer formulations, MVAD’s intrinsic properties offer a straightforward foundation for greener recipes without a radical overhaul in existing processes. Many resin suppliers package MVAD in moisture-resistant bags with clear markings about manufacturing lot and production date. That attention to traceability helps quality control teams troubleshoot unexpected shifts in performance or compliance.

Physical & Chemical Properties

MVAD resin walks a tightrope between toughness and flexibility. The presence of vinyl acetate units introduces a lower glass transition temperature, so the resin doesn’t become brittle at room conditions. Hydroxyl modification bumps up chemical reactivity, meaning coatings crosslink faster and adhesives grip more tenaciously. The powder resists clumping under moderate humidity, takes on and releases plasticizers readily, and shows stable viscosity when dissolved in solvents like ketones or esters. Its resistance to ultraviolet light outpaces many commodity vinyl copolymers. For folks blending it on a shop floor, MVAD resin melts and flows between 170°C and 200°C—enough to handle most melt-processing jobs without risk of decomposition. That predictable window makes it a reliable option for manufacturers under pressure to keep lines running smoothly.

Technical Specifications & Labeling

Quality managers scrutinize datasheets for every batch of MVAD resin. Technical specifications focus on hydroxyl content, molecular weight distribution, bulk density, and residual monomer levels. Hydroxyl content steers crosslinking speed and end-use performance—too little, and coatings may fail spot tests; too much, and the resin softens undesirably. Particle size distributions impact not only flow but also dispersion in liquid formulations. Most factories require clear labeling that states the product name, full chemical description, manufacturer’s address, production date, and recommended storage guidelines. Larger suppliers provide unique identifiers for lot tracking, which is vital during product recalls or investigations into quality failures. Compliance with standards such as ISO 9001 or REACH registration isn’t voluntary; it protects both workers and end users from hazards associated with inconsistent or poorly documented materials.

Preparation Method

Manufacturers typically start with vinyl chloride and vinyl acetate monomers, then run a controlled polymerization—sometimes emulsion, other times solution, depending on resin grade. Hydroxyl functional groups come from a specific co-monomer, often hydroxyalkyl acrylate or methacrylate. Tuning the ratio between the three monomers determines much of the product’s performance. Inexperienced operators may struggle to hit the right consistency without precise instruments and years of hands-on practice. After polymerization, the resin passes through precipitation, filtration, water-washing, and a drying step. Keeping water content low prevents lump formation and quality degradation during storage. Experience on the plant floor shows that aggressive drying can drive up costs without a matching quality boost. Storage in an inert environment keeps the powder from yellowing or picking up odor, which matters to sensitive end users in the coatings and pharmaceutical sectors.

Chemical Reactions & Modifications

The magic in MVAD lies in its readiness to form crosslinks under relatively mild conditions, all thanks to its hydroxyl groups. Chemists can use diisocyanates, melamine-formaldehyde, or blocked polyisocyanates to create tough, solvent-resistant finishes. I’ve watched as small tweaks in cure catalyst or reaction temperature shift properties dramatically—too much heat, and you risk bubble formation; too little, and curing crawls or stalls altogether. Along with crosslinking, additives like anti-blocking agents, UV stabilizers, or flame retardants combine well with MVAD’s backbone, customizing it for niche industrial roles. Some researchers oxidize the hydroxyls to carboxylic acids, building a whole new avenue of waterborne or self-healing systems. In my own lab work, small changes in side-chain chemistry have been the difference between a product that becomes an industry mainstay and one that ends up relegated to a few specialty orders.

Synonyms & Product Names

MVAD resins travel under many banners: hydroxyl-functional vinyl copolymers, vinyl chloride-vinyl acetate-terpolymer, and OH-modified PVC/VA copolymer. Major producers use internal codes—EVAH, VYHH, or similar abbreviations—but seasoned buyers know to scrutinize datasheets for fine-print differences. Some catalog listings bury the terpolymer nature, causing confusion or misapplication. Companies value proprietary names for marketing, but technical users drill down to CAS numbers and chemical structure for assurance. Having swapped stories with coatings formulators, it’s astonishing how often products appear interchangeable on paper, yet behave wildly differently in the real world due to small, undocumented variations. So, treating these names as interchangeable without digging deeper carries risks.

Safety & Operational Standards

Anyone who has handled resin powders, especially in bulk, understands the hazards involved: powder inhalation, electrostatic discharge during loading, risk of fire near open solvents, and rare but serious allergic reactions. Training employees on material safety data sheets (MSDS) and personal protective equipment isn’t just a checkbox—it’s a safeguard from potentially career-ending incidents. Industrial ventilation, explosion mitigation, and strict dust housekeeping standards keep operations safe. In countries with tight regulations like the EU or Japan, MVAD resins seldom reach users unless they pass heavy metal, residual monomer, and phthalate content tests. Laboratories routinely check worker exposure levels and watch for symptoms such as throat dryness or skin irritation. Developing a culture of reporting even minor spills supports continuous improvement in operational safety—a lesson learned from painful mistakes in decades gone by.

Application Areas

MVAD resin’s unique combination of flexibility, adhesion, and reactivity finds its place in industries as diverse as packaging, automotive, consumer electronics, and pharmaceuticals. An ink supplier leverages its low-migration nature for food-contact packaging; car interior finishing relies on its soft touch and solvent resistance. Protective coatings for wire harnesses take advantage of its crosslinking potential, adding years to the lifespan of key components. Artists and crafts manufacturers, seeking reliable pigment dispersion, depend on MVAD as a backbone. In adhesives, its compatibility with other resins and plasticizers drives the push for stronger, more heat-resistant formulations. The push for lightweight, flexible electronics has led some groups to experiment with MVAD as a binder in printable conductors and flexible displays. Every roll-out into a new sector uncovers both new opportunities and novel challenges—from regulatory pushback on monomer residue to the need for new processing tools.

Research & Development

Innovation in the MVAD field doesn’t rest. Research groups worldwide race to deepen sustainability by integrating bio-based monomers or reducing solvent requirements. Some focus on nanoparticle incorporation for electronics, while others pursue antifouling properties for marine coatings. At conferences, presenters boast of UV-curable or waterborne versions, hinting at future regulatory shifts away from traditional solvents. Partnerships between resin manufacturers and end users speed up the design of tailored materials, but also increase the pressure to solve problems like odor, color stability, or long-term outdoor durability. Materials science journals regularly highlight progress in fields like low-temperature curing or resistance to aggressive cleaning chemicals, both issues driving the next generation of products. My own work in formulation confirms that, often, new versions of MVAD come from open dialogue between curious scientists and annoyed production engineers—after all, few things sharpen innovation like a production line halted by unexpected resin quirks.

Toxicity Research

Public health scrutiny keeps growing, driven by past scares involving unregulated resin additives. Researchers pore over MVAD breakdown products, such as low-molecular-weight aldehydes, to ensure no surprises arise during manufacture or use. Animal studies, in-vitro cell assays, and occupational health surveys all contribute data showing that with proper handling and thorough purification, MVAD does not introduce the acute risks once seen with early PVC blends. Still, regulators remain vigilant. Some campaigns urge even tighter controls over residual monomers, highlighting the long tail of public concern. For workers, effective ventilation, dust control, and long-sleeve clothing reduce even minor exposure risks. Going forward, more attention lands on low-dose chronic exposure and environmental fate—especially as more MVAD ends up in items with a high likelihood of landfill or recycling.

Future Prospects

The world’s hunger for materials that deliver value without environmental compromise raises the stakes in the MVAD space. Companies now pitch solvent-free versions or highlight circular-economy pathways—depolym ation, monomer recapture, and integration with biodegradable plastics. Advances in green chemistry push MVAD toward lower energy processing and safer additives. New trial runs explore application in solar cell encapsulation, water filtration membranes, and smart textiles. End users expect not only performance but transparency—clear labeling, responsible sourcing, and robust end-of-life solutions. The industry stands at a crossroads, balancing market growth and social license to operate. From my experience, success comes to players able to translate lab breakthroughs into scalable, robust industrial formulas that deliver day-in, day-out, while listening to end-user feedback and regulatory warnings. The MVAD resin journey continues, shaped by science, demand, and the real-world stories of those who use, process, and depend on these versatile materials.



What are the main applications of MVAD Resin (Hydroxyl-Modified Vinyl Chloride/Vinyl Acetate Terpolymer)?

What Sets MVAD Resin Apart?

MVAD resin, a hydroxyl-modified vinyl chloride/vinyl acetate terpolymer, delivers real benefits where toughness and adhesive power go hand in hand. Unlike many resins, this material sticks to tough surfaces and holds up under wear. I remember talking with coatings experts who trusted MVAD for its weather resistance—painted metal signs last longer on city streets, and graffiti wipes away without eating through the coating. This kind of durability impacts property managers and city workers who don’t have time for constant touch-ups.

Protective and Decorative Coatings

In protective and decorative coatings, MVAD resin turns up in paints, primers, and clear finishes. Hardware stores sell products with MVAD baked in, offering resistance to water and chemicals. People working on industrial machinery or outdoor electrical cabinets want coatings that keep rust out. Shipyards favor MVAD-based paints to fight off corrosion, salt spray, and weather damage. In my own garage, I’ve seen primers with MVAD keep bare steel tools from turning orange, even in muggy summers.

Adhesives in Construction and Packaging

On the job site, MVAD resin helps construction adhesives bond concrete, plastics, and wood. Flooring pros choose these adhesives for vinyl tiles because the result won’t lift, even in high-traffic entryways. The food packaging world also uses MVAD resin films. These films keep oil, moisture, and air away from chips and crackers, so food stays fresh at home long past the packaging date. Major snack brands choose protective coatings for bags and wrappers built on this resin, banking on its proven barrier properties.

Inks and Printing

Looking at packaging and book printing, MVAD resin shapes inks that stick to tricky surfaces: plastic bottles, foil candy wrappers, and synthetic labels all use inks stabilized by this terpolymer. These inks resist smudging, making them a staple for high-speed label printers. Printers often mention how MVAD’s binding ability means color doesn’t fade from sunlight as quickly, so products stand out on crowded store shelves.

Textiles and Synthetic Leather

Textile mills coat fabrics with MVAD-based finishes, which help repel stains and keep colors looking bright after washing. Synthetic leather car seats benefit, too—the resin’s flexibility lets cushions bend without cracking. Drivers and parents get seats that don’t flake or peel after a year of use, proving this resin’s worth in daily life.

Road Ahead: Opportunities and Cautions

MVAD resin brings real value where durability, chemical resistance, and environmental toughness are needed. There’s growing pressure on manufacturers to cut down on polluting additives in their formulas. Researchers have published studies (like those from the Journal of Vinyl & Additive Technology) on how innovations in MVAD chemistry hit both performance and sustainability targets. Companies moving toward eco-friendlier plastisol alternatives often look at this resin as a promising step.

The industry faces an ongoing debate: How to balance cost, supply-chain reliability, and environmental rules? Experts suggest closer collaboration between resin chemists and sustainability engineers. This could steer MVAD formulations toward less reliance on harsh solvents or heavy metals, opening more doors in green building and food-safe packaging.

MVAD Beyond the Factory

Everyday products often owe a lot to MVAD resin’s quiet protective qualities. Whether sealing paint on rooftop HVAC units, locking down laminate flooring, or keeping food fresh on the shelf, this terpolymer pushes back against a throwaway culture—one paint job, package, or batch of tiles at a time.

What are the key properties and benefits of using MVAD Resin?

The Real Strength of MVAD Resin

For anyone involved in compounding, adhesives, or coatings, finding a material that improves processing and performance counts for a lot. Throughout my years in the materials world, resins either save time or become one more headache—seldom anything in between. MVAD Resin, mostly based on vinyl acetate and ethylene, fixes more than a few common challenges in the production line. This resin melds flexibility and strength, keeping finished products stable in temperature swings, moisture, or mechanical stress.

Plenty of businesses move to MVAD for its versatility. It handles pigment loads without gumming up the works, reducing downtime. Anyone working on PVC modification notices how MVAD shifts impact strength in a real way. Adding this resin to rigid or flexible mixes means fewer product failures—an important factor if warranties or long-term brand reputation matter to you.

Why MVAD Resin Outscores Standard Options

Standard resins tend to break down when exposed to weather or physical stress. In my experience, MVAD’s resistance shows up quickly in outdoor vinyl goods. The cross-linked structure means harsh sunlight or rain won’t break it apart or cause color loss. Flooring, automotive trim, wallcoverings, and garden hoses stay flexible much longer, and you don’t get as many customer complaints about cracking or peeling.

A major benefit: MVAD bonds tightly with both polar and nonpolar materials. You see this in coatings that actually stick on metal and plastics alike—no need to jump through hoops with specialty primers. For adhesives and sealants, mixing goes smoother, and holding power stays steady across humidity changes.

Processing Benefits: Speed, Safety, and Consistency

On the production side, processors appreciate that MVAD melts evenly and at lower temperatures than other resins. Energy costs drop, and less volatile smoke or strong odor escapes during mixing—better for anyone working on the floor. Controlling melt flow matters when running big batches. MVAD’s grain size and composition cut down on clumping and uneven dispersion, so machines don’t jam and scrap rates drop.

Some resins force you to weigh cost against performance. With MVAD, long shelf-life paired with chemical resistance offsets the slightly higher material cost. You save through fewer returns and less wasted product. In flexible film production, businesses can stretch films thinner without ripping. Food packaging lines run more efficiently, and fewer rejects pile up at the inspection table.

Safer Ingredients Mean Stronger Trust

MVAD Resins usually stay clear of plasticizers that leach out over time. I’ve seen suppliers highlight this point especially for kids’ products, food wraps, and hospital supplies. A switch to MVAD cuts out substances found on regulatory watchlists, letting manufacturers move forward without constant recalls or reformulation. Reassuring buyers about product safety builds loyalty; it’s not just a marketing line, it impacts purchasing decisions.

Looking Toward Solutions for Even Better Outcomes

For anyone considering process upgrades, MVAD frees up teams to experiment. Its compatibility with recycled fillers or bio-based additives lets companies meet eco-friendly targets—without gambling on untested chemicals or unreliable materials. Partnering with a trusted supplier, testing across multiple runs, and updating standard procedures will cut the most risk out of a switch. By starting with pilot lines, technical teams gather hard data on how MVAD influences cycle times, machine wear, and overall waste.

In a field where small changes in process or recipe can make or break a quarter’s bottom line, those willing to innovate with MVAD set themselves up for gains. Material engineers, purchasing leads, and production managers who stay informed on advances like this keep their operations ahead of the curve.

How should MVAD Resin be stored and handled for optimal performance?

Why Care About Storing MVAD Resin the Right Way?

From personal experience in the chemical supply world, dealing with MVAD resin can mean either a headache or a smooth ride. This material comes packed with a promise of performance — strong bonds, clarity, and stable results in paints, adhesives, or even hot-melts. Trouble often sneaks in through the back door: poor storage and careless handling. If you've ever opened a bag and noticed clumping or off smells, you know what I mean. Savings get lost fast when spoiled resin turns up on the production line, mixes badly, or affects quality checks.

Simple Steps That Make a Big Difference

One thing about MVAD resin — it draws in moisture if given the chance. Any water that sneaks in can affect melt flow, ruin clarity, and cause haze in your final product. I keep MVAD resin in a cool, dry spot. Temperatures should stay below 30°C, ideally closer to standard warehouse ranges of 15–25°C. Store away from direct sunlight. I’ve seen colleagues stack bags near windows thinking “what’s the harm?” Two weeks later: unusable resin, production delays, and calls from angry clients.

Humidity also plays tricks. Even highly sealed packaging lets in some air over months. Best practice? Stack unopened bags on pallets, not right on the floor, and keep them wrapped or closed as tightly as possible after use. For longer storage — say, more than six months — monitor ambient humidity and temperature. Warehouses with regular checks and dehumidifiers face fewer product issues. The steady approach pays back in fewer ruined batches down the line.

Careful Handling Drives Consistent Results

From work on factory floors, I’ve learned MVAD resin holds up during transport, but rough handling takes a toll. Resin granules break down if dropped or crushed, and smaller particles can lead to dust generation and mixing troubles. Bags should stay upright, not tossed from trucks, and forklifts need careful control. Training crew to treat raw materials with care avoids both product waste and health risks from breathing in resin dust.

Clean-up and workspace hygiene matter, too. My team always makes sure loading areas and silos get checked for old product before refilling. Leftover resin from last month's job can mix with fresh supplies and ruin blends, especially when switching grades. Some facilities schedule regular deep cleans twice a year, which cuts contamination problems even further.

Packing, Opening, and Moving MVAD Resin: Lessons Learned

Good labeling and traceability solves headaches later. Every bag in my experience gets a lot code, date, and storage notes. If moisture sneaks in, you can track affected batches quickly and keep recalls small. I recommend opening only what you need for the day’s production. Reseal partial bags tightly and use them soon.

In busy plants, leaks and spills sometimes happen. Clean up resin immediately, since it turns slick and hazardous underfoot. Proper waste bins and labeled cleanup tools make a difference in both safety and keeping raw materials clean.

Building a Smarter System

Companies that implement simple controls — climate monitoring, regular training, careful labeling, and scheduled audits — see fewer rejected loads and steadier output. MVAD resin isn’t tricky by nature, but shortcuts in its storage and handling almost always show up as lower product quality. Consistent habits pay off, both in dollars and fewer headaches down the chain.

Is MVAD Resin compatible with other polymers or additives?

Everyday Blending Risks and Real-World Challenges

Mixing chemicals always comes with a little bit of nervousness. Some things work well together, and others just fight from the start. MVAD resin, or methyl vinyl acetate-diene, gets a lot of attention for its flexibility in adhesives and coatings. One thing tech departments keep asking is whether this resin “plays nice” with a range of polymers and common additives. In my early days, I watched a whole batch of hot-melt glue get ruined because the resins and waxes would not cooperate. The reality is: compatibility isn’t just about lab theory; it’s about thousands of dollars and countless hours saved or wasted.

Solubility and Compatibility: Practical Factors

Often, the root of the blending problem comes down to solubility and the chemistry of the backbone. MVAD happens to show fairly good solubility with flexible polymers like ethylene-vinyl acetate (EVA) and some polyesters. Workers in the adhesives field have known for decades that vinyl-based components tend to form decent bonds with each other. Things turn tricky with highly crystalline plastics such as polyethylene or polystyrene. I remember how stubborn polystyrene was, leaving sticky clumps in what should have been a clear, shiny solution.

Crosslinking additives or those with strong polar groups tend to create more issues in the mix. Some plasticizers, for instance, help by softening the blend and increasing flow, but only up to a point before the formulation falls apart. In one real-world application, an excess of a certain phthalate left a tacky residue that drew complaints from every corner of the plant. So, careful trials are needed, not just data sheets.

Why Real-Life Testing Matters

Processors, especially in small-scale factories without expensive analytical tools, learn quickly that theory only means so much. You dump a handful of MVAD and another polymer in a kettle, cross your fingers, and hope it won’t seize or separate. Real-world quality looks for smooth blends, no weird reactions, and a resin that stays stable over time—especially after a few months sitting on a warehouse shelf. This resin blends better at medium temperatures and with low-shear mixing rather than high-speed agitation, which creates clumps or microbubbles.

Can You Solve Compatibility Issues?

Do folks just accept incompatibility? Not if their paycheck depends on line uptime. People use compatibilizers—special ingredients designed to let two resins shake hands. Many rely on block copolymers or surfactants. Blending order and temperature also make a difference. In one case, adding a small amount of glycol as a “bridge” helped two stubborn materials combine cleanly, without losing flexibility or setting too slowly.

Suppliers still play a big role—they know the quirks of different resins by heart, and sharing what actually mixed well in the past prevents wasted expense. That’s earned wisdom, not marketing fluff. Small tweaks in process conditions, timing, and additive level often do more good than a full-scale reformulation.

Honest Talk About Safety and End-Use

In my years in adhesives, I learned quickly that anything touching food wraps, toys, or skin needs extra scrutiny. Certain additives interact with MVAD resin in ways that might release unwanted byproducts or impact safety ratings. The best teams always check local rules and safety certifications before rolling out any blend to production.

In the end, MVAD resin offers a lot of potential for creative blends, but true compatibility only emerges from practical, eyes-on testing—not just trusting data charts. A little careful planning and real discussion with experts brings out the best in this resin, while avoiding not-so-obvious failures that cost more than anyone wants to admit.
What are the recommended processing methods for MVAD Resin in formulations?

Understanding Why Proper Processing Matters

As someone who’s worked in both R&D and quality assurance, I’ve seen how the success of a product often relies on choices made during formulation. Getting MVAD resin processed right isn’t just about ticking boxes; poor handling leads to clumping, poor flow, or even chemical instability. Each step in the process impacts product performance in ways that reach all the way to the end user. Whether you’re formulating for adhesives, coatings, or pharmaceuticals, it pays to get hands-on with the specifics.

Drying and Storage: Keeping Resin in Top Shape

MVAD resin responds quickly to ambient conditions. Store it in airtight containers—otherwise, moisture creates headaches on the line. Even a short exposure to humidity can result in sticky lumps that won’t blend smoothly. Before incorporating the resin into any formulation, confirm the product sits at the recommended moisture range. Desiccant packs inside sealed drums help avoid moisture pickup, and a quick check of the resin’s consistency before processing can save you from wasting batches.

Grinding and Particle Size Management

Precision during grinding helps producers control the behavior of MVAD resin in blends. Too coarse, and you’ll see uneven distribution in the finished product; too fine, and dust issues can shut down production or introduce inhalation risks. Most operators find a sweet spot between 100 and 300 microns, which improves blend quality and downstream consistency. This kind of control isn’t just for cosmetics—particle size affects reactivity, dispersion, and strength.

Dispersion and Pre-Mixing Tactics

MVAD resin never cooperates fully if dumped straight into a high-shear mixer. It clumps, floats, and forms fish eyes that are nearly impossible to break up later. Start by pre-wetting the powder with compatible solvents or liquids. Slow, staged addition to the mix, coupled with moderate agitation, keeps the resin from agglomerating. If you’re running a continuous process, gear up for proper feed rates and time them with mixer speeds. That keeps the blend free-flowing and cuts back on rework.

Temperature Control During Processing

MVAD resin softens at relatively low temperatures. If the mix heats up beyond the recommended process window—usually between 60°C and 90°C—the resin sticks to mixers and loses its properties. In my own work, I found batch losses can run up costs if the resin overheats for even ten minutes. Use jacketed vessels or in-line cooling to clamp down on temperature spikes. Short bursts of temperature checks with calibrated probes make a real difference here.

Choosing the Right Additives

The choice of plasticizers, stabilizers, and pigments dramatically influences how MVAD resin behaves during processing. Start with low dosages during trials and build up gradually, logging each result. Some additives, especially inorganic pigments or certain waxes, can cause separation or compatibility problems if loaded without prior testing. Blending order and residence time in mixing equipment play as much a role as the actual additive choice.

Scale-Up: Small Adjustments Matter

Once lab protocols pass validation, small tweaks in commercial batches can make or break production goals. Step-wise scaling—doubling batch size, then quadrupling—helps spot issues before they grow. Every technician sees the temptation to move too quickly once lab tests look good, but even a minor change in paddle geometry or mixer fill volume alters the resin’s role in the mix.

Keeping the Process Accountable

Use regular quality checks after each key processing step. Moisture analysis, sieve tests for particle size, and visual checks for color and dispersion keep mistakes from piling up. It’s easy to skip these checks when deadlines hit, but process discipline always pays off in the final product.

MVAD Resin (Hydroxyl-Modified Vinyl Chloride/Vinyl Acetate Terpolymer)
Names
Preferred IUPAC name Poly( chloroethene-co-ethenyl acetate-co-2-hydroxyethyl ethene-1,2-dioate )
Other names Mowilith DM 22
PVC-VA-VOH Terpolymer
Hydroxylated Vinyl Chloride/Vinyl Acetate Copolymer
Hydroxyl-Modified Vinyl Resin
Vinyl Chloride-Vinyl Acetate-Hydroxyalkyl Terpolymer
Pronunciation /ˈem.viː.eɪ.diː ˈrɛzɪn/
Identifiers
CAS Number 25036-29-7
Beilstein Reference 2221443
ChEBI CHEBI:134179
ChEMBL CHEMBL2108508
DrugBank DB14602
ECHA InfoCard 27c47bf2-fbd6-4fd7-8656-3d093b14b2cc
EC Number EC 500-120-0
Gmelin Reference 111314
KEGG C18647
MeSH Polymers
PubChem CID 135487379
RTECS number KH6510000
UNII 4Z1V8T5S7X
UN number UN1866
Properties
Chemical formula (C2H3Cl)x(C4H6O2)y(C2H4O)z
Molar mass 52,000–57,000 g/mol
Appearance White powder
Odor Faint odor
Density 0.36-0.40 g/cm³
Solubility in water Insoluble in water
Basicity (pKb) 13.2
Magnetic susceptibility (χ) -1.463E-06 cm³/g
Refractive index (nD) 1.48
Viscosity 300-600 mPa·s
Dipole moment 2.59 D
Pharmacology
ATC code No ATC code
Hazards
GHS labelling GHS02, GHS07
Pictograms GHS07
Signal word Warning
Hazard statements H315, H319, H335
Precautionary statements P210, P261, P280, P305+P351+P338, P337+P313, P501
NFPA 704 (fire diamond) 2-2-1
LD50 (median dose) > 5,000 mg/kg (rat, oral)
NIOSH CN8425000
PEL (Permissible) Not established
REL (Recommended) 2.0 – 3.0
Related compounds
Related compounds PVAc (Polyvinyl acetate)
PVC (Polyvinyl chloride)
PVB (Polyvinyl butyral)
EVAc (Ethylene-vinyl acetate copolymer)
VAE (Vinyl acetate-ethylene copolymer)