Poly(N-vinylpyrrolidone/vinyl acetate) [30:70] is a vinylpyrrolidone-vinyl acetate copolymer supplied as a 50% solution in isopropanol. The 30:70 composition combines the hydrophilic, film-forming character of N-vinylpyrrolidone with the more hydrophobic, adhesive contribution of vinyl acetate.
Related names: Poly(vinylpyrrolidone-co-vinyl acetate), PVP/VA copolymer, VP/VA copolymer, vinylpyrrolidone/vinyl acetate copolymer, and copovidone-type VP/VA copolymer.
This copolymer has an approximate molecular weight of 25,000 and a glass transition temperature of 108°C. Its balance of solubility, film formation, adhesion, and flexibility makes it useful in formulation work involving pharmaceutical and medical applications, cosmetics and personal care products, adhesives, and coatings.
Key Properties
- Copolymer of N-vinylpyrrolidone and vinyl acetate
- 30:70 N-vinylpyrrolidone/vinyl acetate composition
- Product Number: 09718
- CAS Number: 25086-89-9
- Approximate molecular weight: 25,000
- Glass transition temperature: 108°C
- Supplied as a 50% solution in isopropanol (50 g polymer)
- Soluble in alcohols, THF, water, dioxane, ketones, methylene dichloride, and toluene
Applications
Pharmaceutical & Medical Formulations
Poly(N-vinylpyrrolidone/vinyl acetate) [30:70] is used in formulation work involving drug binders and wound-dressing materials where film formation, controlled solubility, adhesion, and polymer flexibility are relevant.
Cosmetics & Personal Care
PVP/VA copolymers are used as film-forming polymers in personal care formulations such as hair styling products, skincare products, and sunscreens where film integrity, flexibility, and formulation compatibility are important.
Adhesives & Coatings
The vinyl acetate-rich composition makes this copolymer relevant for adhesive, coating, and film applications where adhesion, flexibility, water response, and solvent compatibility need to be balanced.
Solubility & Compatibility Considerations
- Soluble in alcohols, THF, water, dioxane, ketones, methylene dichloride, and toluene
- Supplied in isopropanol for solvent-based formulation workflows
- Solubility and viscosity may vary with concentration, solvent blend, temperature, and formulation components
- Compatibility should be confirmed with active ingredients, plasticizers, resins, pigments, fillers, surfactants, and other additives before scale-up
Final formulation performance depends on polymer concentration, solvent system, drying conditions, substrate chemistry, and the intended use environment.
Application Tips
- Evaluate polymer concentration and solvent blend in small-scale formulation trials
- Mix thoroughly before use to support uniform polymer distribution
- Screen drying conditions when film formation, adhesion, or coating appearance are important
- Confirm compatibility with formulation components before production or application development use
Handling & Storage
- Store at room temperature
- Use gloves, chemical goggles, and a fume hood
- Keep container tightly closed when not in use
- Handle as a flammable liquid
- Avoid ingestion and contact that may cause irritation
- Follow the product SDS for complete handling, storage, cleanup, and disposal guidance
Why Choose Polysciences?
Trusted by 6,000+ Researchers Worldwide
Cited in Thousands of Peer-Reviewed Studies
U.S. Manufacturing & Global Distribution
Reliable Delivery to 40+ Countries
FAQ
Click a question to expand.
1. What is Poly(N-vinylpyrrolidone/vinyl acetate) [30:70]?
It is a copolymer of N-vinylpyrrolidone and vinyl acetate. The N-vinylpyrrolidone units contribute hydrophilic and film-forming character, while the vinyl acetate units contribute more hydrophobic and adhesive properties.
2. What does the 30:70 ratio mean?
The 30:70 ratio refers to the N-vinylpyrrolidone-to-vinyl acetate composition. This vinyl acetate-rich composition helps balance solubility, film formation, adhesion, and flexibility in formulation work.
3. What applications is this copolymer used for?
It is used in formulation work involving pharmaceutical and medical materials, cosmetics and personal care products, adhesives, coatings, and film-forming systems.
4. What solvents can be used with this copolymer?
This copolymer is soluble in alcohols, THF, water, dioxane, ketones, methylene dichloride, and toluene. Users should confirm solubility under the exact concentration and formulation conditions required for their application.
5. How is this product supplied?
It is supplied as a 50% solution in isopropanol containing 50 g polymer. Because the product contains isopropanol, it should be handled as a flammable liquid with appropriate laboratory precautions.
Safety & Documentation
Review the product specification and Safety Data Sheet before use. Handle with gloves, chemical goggles, and a fume hood. Follow SDS guidance for flammable liquid handling, irritation hazards, ingestion hazards, storage, cleanup, and disposal.
