Polyvinylpyrrolidone-vinyl acetate copolymer

Acetic acid vinyl ester, polymer with 1-vinyl-2-pyrrolidinone copolymer of 1-vinyl-2-pyrrolidone and vinyl acetate in a ratio of 3 2 by mass copolyvidone KolUdon VA 64-, Luviskol VA Plasdone S-630-, poly(l-vinylpyrrolidone-co-vinyl acetate) polyvinylpyrrolidone-vinyl acetate copolymer PVPAA. PVP/ VA copolymer. [Pg.201]

Poly (1-vinylpyrrolidone-co-vinyl acetate) Polyvinylpyrrolidone/vinyl acetate copolymer. See PVPA/A copolymer POM. See Acetal copolymer Ponolith yellow Y. See Pigment yellow 74 POP (5) butyl ether. See PPG-5 butyl ether POP (9) butyl ether. See PPG-9 butyl ether POP (15) butyl ether. See PPG-15 butyl ether... [Pg.1310]

Synonyms Acetic acid ethenyl ester, polymer with 1-ethenyl-2-pyrrolidonone Copolyvidonum 1-Ethenyl-2-pyrrolidinone, polymer with acetic acid ethenyl ester Poly (1 -vinylpyrrolidone-co-vinyl acetate) Polyvinylpyrrolidone/vinyl acetate copolymer PVPA/A Vinylpyrrolidone/ vinyl acetate copolymer... [Pg.1327]

Polyvinylpyrrolidone/vinyl acetate copolymer. See PVP/VA copolymer Polyvinyl stearate CAS 9003-95-6... [Pg.3611]

Chokshi et al. utiUzed a torque rheometer to study the physical and viscoelastic properties of binary mixtures of indomethacin and polymers considered for HME processing (Chokshi et al. 2005). Selected polymers were Eudragit EPO (EPO), polyvinylpyrrolidone/vinyl acetate copolymer (PVP-VA), polyvinylpyrrolidone K30 (PVPK30), and poloxamer 188 (PI 88). The zero rate viscosity (jjo) for binary mixtures of indomethacin and EPO, PVP-VA and PVPK30 were lower than the pure polymers, whereas rjo for indomethacin/P188 mixture was higher than the pure... [Pg.185]

Rhodium precipitation in solubilized rhodium-phosphite complex catalyzed liquid recycle hydroformylation may be minimized or prevented by carrying out product recovery in the presence of an organic polymer containing polar functional groups such as amides, ketones, carbamates, ureas and carbonates.[20] Patent examples include the use of polyvinylpyrrolidone and vinylpyrrolidone-vinyl acetate copolymer with diorganophosphite-modified rhodium catalysts. [Pg.23]

Water-soluble vinylpyrrolidone-vinyl acetate copolymer contains the two components in a ratio of 6 4. It is produced in the same way as soluble polyvinylpyrrolidone, by free-radical polymerization reaction with an organic peroxide as initiator (Fig. 5). As vinyl acetate is not soluble in water, the synthesis is conducted in an organic solvent such as 2-propanol. [Pg.4]

Polyvinylpyrrolidone/vinyl acetate (PVAA A) copolymer 3-5 Setting agent... [Pg.461]

Film-forming actives. They produce a continuous film on hair (e.g. synthetic polymers such as polyvinylpyrrolidone, vinylpyrrolidone/vinyl acetate copolymers, natural polymers are less commonly used today). [Pg.336]

It is used in the manufacture of polyvinylpyrrolidone (PVP), in the manufacture of copolymers with, for example, aciv lic acid, acrylates, vinyl acetate and acrylonitrile and in the synthesis of phenolic resins. About 10-15% of the monomer is used in the pharmaceutical industry for the production of PVP-iodine complex used as a disinfectant. It is also used as a reactive solvent of ultraviolet-curable resins for the production of printing inks and paints as paper and textile auxiliaries, and as an additive in the cosmetics industry (Harreus, 1993). [Pg.1182]

Similar grafting experiments by the emulsion technique were described (34) in the system vinyl chloride/copolymer butyl methacrylate-methacrylic acid and in the reverse system, and also in the system styrene/polyvinyl chloride. In this last case again as in homogenous medium, the inverse process failed (vinyl chloride on polystyrene). Grafted acrylonitrile copolymers were also prepared in order to improve their dyeability, by polymerizing acrylonitrile in emulsion in the presence of many different polymers as polyvinyl alcohol, polymethacrylamide and polyvinylpyrrolidone (119, 120, 121), polyvinyl acetate and polyacrylic acid (115), wool (224,225), proteins (136), etc. [Pg.185]

Classification Polyvinylpyrrolidone-vinylacetate copolymer Definition Copolymer obtained by free-radical polymerization of 6 parts of vinylpyrrolidone and 4 parts vinyl acetate in I PA Formula (C6H,N0) (C,H602) ... [Pg.1045]

K30 or copolymer of polyvinylpyrrolidone and vinyl acetate, both of which were acting as water-soluble carriers. The stability of the extrudates was speculated to be dependent on the degree of hydrogen bonding between the drug and polymer. An excellent review by Breitenbach (102) provides an in-depth view of this process in the rapid release of drug. [Pg.421]

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