Abstract: What is described herein is an excipient for a pharmaceutical tablet which is a proliferous copolymer of vinyl pyrrolidone and vinyl acetate, to provide the tablet with rapid dissolution and disintegration properties, and, also reduced hygroscopicity.

Abstract: What is described herein is an excipient for a pharmaceutical tablet which is a proliferous copolymer of vinyl pyrrolidone and vinyl acetate, to provide the tablet with rapid dissolution and disintegration properties, and, also reduced hygroscopicity.

Abstract: What is described herein is a pharmaceutical excipient which is a proliferous copolymer of vinyl pyrrolidone and vinyl acetate, having advantageous dissolution and disintegration properties.

Abstract: What is described herein is a pharmaceutical excipient which is a proliferous copolymer of vinyl pyrrolidone and vinyl acetate, having advantageous dissolution and disintegration properties.

Abstract: What is described herein is a crosslinked polyvinylpyrrolidone (PVPP) copolymer of vinyl pyrrolidone (VP) and monomer derived from 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP).

Abstract: What is described herein is a crosslinked polyvinylpyrrolidone (PVPP) copolymer of vinyl pyrrolidone (VP) and monomer derived from 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP).

Abstract: Homogeneous copolymers of 60-99 mole % of vinyl pyrrolidone (VP) and 1-40 mole % 2-methylene-1,3-dioxepane (MDO), preferably 85-95 mole % VP and 5-10 mole % MDO, having a K-value of about 30-50, and a Tg of about 124-138.degree. C., are described herein. The copolymers are hydrolytically degradable in aqueous acid or basic solutions and biodegradable.

Abstract: A prefilter bag for insertion into a standard filtration bag apparatus, having a filtration assembly comprising a seamless filter membrane having uniform pore openings preselected within the range of between about 2 and about 50 microns (.mu.) and a linearly channeled, non-deformable, semi-rigid liquid transport thermoplastic sheet in the form of a molded webbing or netting in contact with the upper surface of the filter membrane; said webbing having marginal edges which are coextensive with those of the membrane; said assembly adapted to be shaped by continuous winding of the assembly upon itself for 2 to 5 complete convolutions around a tubular mandrel so as to form a cylindrical tube or cone; the bottom of said cylinder being sealed to prevent liquid leakage and the top of said cylinder, forming a liquid inlet opening, being sealed to a retaining ring adapted to be inserted in, attached to or sealed to an outer, retaining ring of a non-wrapped filter bag.

Abstract: Stable, water-based formulations containing high levels of water insoluble UV protectants/insecticides are provided herein as sprayable microemulsions containing a film-forming polymer, e.g. Agrimer.RTM. VEMA ES 425 [poly(methyl vinyl ether-maleic acid monobutyl ester)]. The polymers are solubilized either by partial neutralization with a base, or by emulsification with appropriate emulsifiers. These formulations produce single phase, micro- or mini-emulsions (particle size<1 micron) on dilution with water. The formulations are useful as UV protectants in veterinary use, for protection of UV-labile insecticides, and for "pour on" applications.

Abstract: A low volatile organic compounds hair spray microemulsion in the form of a stable, clear, single phase system in which the particles therein have a diameter of less than 1 micron, consisting essentially of, by weight,(a) an ethyl half-ester of a copolymer of maleic anhydride and an alkyl vinyl ether in an amount of less than 20%, optionally neutralized up to 20 mole %,(b) an ethoxylated glycerol fatty acid ester as the surfactant having a hydrophobic-lipophilic balance of 10-18, in an amount of at least 0.1%,(c) ethanol in an amount of 55% or less, and(d) water to 100%.

Abstract: A low volatile organic compound hair spray composition in the form of a stable, clear, single phase microemulsion in which the particles therein have a diameter of less than 1 micron, consisting essentially of by weight,(a) a butyl half-ester of a copolymer of maleic anhydride and ethyl vinyl ether in an amount of about 2-10%, optionally neutralized up to 20 mole %,(b) poly(methyl vinyl ether) as a surface active polymer in an amount of at least 0.75 to 1 part of (a);(c) a secondary surfactant that is a polyethoxylated glyceryl fatty acid ester in an amount of at least 0.1%, and which has a hydrophilic-hydrophobic balance of greater than 10,(d) ethanol in an amount of 20 to 50%, and(e) water to 100%.

Abstract: A 0% VOC, single phase hair spray composition of a water-insoluble polymer wherein substantially all the particles therein have a diameter of less than 1 micron, i.e. a microemulsion.