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.
Type:
Grant
Filed:
February 7, 2002
Date of Patent:
September 16, 2003
Assignee:
ISP Investments Inc.
Inventors:
Edward G. Malawer, James P. Cullen, Chi-San Wu, Laurence Senak, William J. Drefko
Abstract: A tablet coating composition including a mixture of (a) sodium alginate and (b) a polyvinylpyrrolidone-vinyl acetate copolymer, and, optionally, (c) hydroxypropylmethyl cellulose, and/or hydroxypropyl cellulose.
Type:
Grant
Filed:
June 5, 2001
Date of Patent:
September 16, 2003
Assignee:
ISP Investments Inc.
Inventors:
Antonio Moroni, Nadhamuni G. Nerella, William Drefko
Abstract: What is described herein is a process for preparing a lightly-crosslinked copolymer of (a) vinyl pyrrolidone (VP) and (b) dimethylaminopropyl methacrylamide (DMAPMA) under more reproducible conditions. Suitably the weight ratio of (a):(b) is 50-95:50-5, preferably 80:20. The copolymer has a Brookfield viscosity of 5,000 to 45,000 cps; preferably 10,000 to 30,000 cps, and a haze of <100 NTU; it includes about 0.1 to 0.5 wt. %, preferably 0.2 to 0.4 wt. %, of a cross-linking agent based upon the total weight of the monomers in the copolymer.
Abstract: What is described is a polymeric hydrogel product of a stable, aqueous polymeric composition which composition forms a clear to translucent film upon application to a substrate, and includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water, made by irradiating the composition with high energy electron beam or gamma-radiation.
Abstract: Liquid compositions consisting essentially of by weight, 0.1-50% IPBC in 99.9-50% polyethylene glycol, polypropylene glycol or polypropylene glycol glyceryl ester, or mixtures thereof, which do not contribute to the VOC of paints and coatings and is stabilized effectively against discoloration even at elevated temperatures or direct sunlight.
Type:
Grant
Filed:
December 6, 2002
Date of Patent:
September 9, 2003
Assignee:
ISP Investments Inc.
Inventors:
Karen Winkowski, Xianbin Liu, Claudinei A. Fava, Daniel H. Brown
Abstract: A tablet of compacted particulate cleaning composition, wherein the tablet or a discrete region thereof contains surfactant and detergency builder, characterized by containing about 1-10% by wt. of a composite disintegrant blend comprising, by weight, (a) about 40-70% of a water soluble salt, (b) about 30-60% of a mixture of about 10-90% of cellulosic material and 90-10% of crosslinked polyvinylpyrrolidone, the tablet having a disintegration rate of at least 100 g/min.
Abstract: A laundry detergent composition which includes a standard detergent formulation and an effective soil releasing amount of vinyl caprolactam homopolymer having a K-value of at least 40, preferably 40-50.
Abstract: This invention relates to a roofing or siding membrane comprising a non-woven mat coated with an asphaltic composition containing, in addition to 35-75 wt. % bitumen, a mixture of isotactic and amorphous propylene polymers and between about 0.08 and about 15 wt. % of a functionalized, olefin polymer to provide a non-staining membrane of high tensile strength, low polyolefin content with respect to asphalt, improved compatibility between asphalt and non-functionalized polymers and reduced light end asphalt and polymer exudates. The invention also relates to a method for preparing the membrane.
Type:
Grant
Filed:
September 13, 2001
Date of Patent:
June 24, 2003
Assignee:
Building Materials Investment Corporation
Inventors:
Louis Lynn Grube, George Manuel Adao, Krishna Venkataswamy
Abstract: What is described is a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, particularly, —OH or —NH2, or both. The reaction product is a crosslinked polymeric ester or amide/imide, or both, suitably having a mole ratio of —OH, or —NH2, to —COOH, of 1:10 to 10:1, preferably 2:10 to 7:1. The hydrogel is particularly swellable in water, e.g. >100% in 1 hour in aqueous media; and forms a thin, tacky layer on a substrate, which property is useful in bioadhesive products.
Abstract: A process of making a vinyl caprolactam (VCL)-based polymer which comprises suspension polymerizing the monomers in aqueous medium in the absence of an added protective colloid, wherein polymer formed at an early stage of the polymerization functions as a dispersing agent to maintain polymer particles suspended in water throughout the polymerization.
Type:
Grant
Filed:
July 6, 2001
Date of Patent:
May 27, 2003
Assignee:
ISP Investments Inc.
Inventors:
Jui-Chang Chuang, Jenn S. Shih, Michael A. Drzewinski
Abstract: A non-aqueous, heterogeneous polymerization process comprises heating a reaction mixture of about 5-70%, preferably 10-50%, by weight, of a vinyl amide monomer in an oil as solvent, and a water-soluble cosolvent, and a free radical initiator, optionally in the presence of a crosslinking agent and/or a surfactant, wherein the oil solvent is present in an amount sufficient to keep the resultant polymer in a stirrable state throughout the polymerization. The polymer reaction product is capable of forming a uniform emulsion or gel upon addition of water thereto.
Abstract: What is described herein is a terpolymer of maleic acid (MAA)/maleic anhydride (MAN)/alkylvinylether (AVE), made by partial cyclization, e.g. 1-99%, of a maleic acid/alkylvinylether copolymer, preferably comprising, in mole %, 1-49% MAA/1-49% MAN/50% AVE, and derivatized terpolymers thereof.
Abstract: The invention relates to preservative compounds having the formula:
where:
X and Y are H or Br, with at least one of X and Y being Br;
R is H or CH3; and
n=1-8; and
mixtures thereof.
Type:
Grant
Filed:
May 10, 2002
Date of Patent:
May 13, 2003
Assignee:
ISP Investments Inc.
Inventors:
Steven H. Bertz, Samuel T. D'Arcangelis, Ilya Makarovskiy, John J. Merianos
Abstract: A stable, aqueous polymeric composition which forms a clear to translucent film upon application to a substrate includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water.
Type:
Grant
Filed:
February 15, 2001
Date of Patent:
April 15, 2003
Assignee:
ISP Investments Inc.
Inventors:
David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
Abstract: A single ply reinforced roofing membrane having advantageous tensile and seam strength comprising a reinforcement scrim sandwiched between polyolefin cap and base layers, characterized in that at least one of said layers includes a functional polyolefin as additive therein.
Type:
Grant
Filed:
June 9, 2000
Date of Patent:
April 8, 2003
Assignee:
Building Materials Investment Corporation
Inventors:
Krishna Venkataswamy, Krishna Srinivasan, Li-Ying Yang
Abstract: The invention relates to a coated fiber mat of improved tear strength upon dividing pieces of the coated mat and the coating which comprises a cured, non-woven, fiber glass mat containing a polysiloxane wherein the fibers are fixedly distributed in a formaldehyde type binder containing a binder modifier which is a crosslinked styrene/acrylic polymer, and to a process for the preparation of the mat.
Type:
Grant
Filed:
January 12, 2001
Date of Patent:
April 8, 2003
Assignee:
Building Materials Investment Corporation
Abstract: A system for delivering an active material includes (1) a stable, aqueous polymeric composition of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) water; and (2) an active material dispersed in said composition.
Type:
Grant
Filed:
June 15, 2001
Date of Patent:
April 1, 2003
Assignee:
ISP Investments Inc.
Inventors:
David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
Abstract: Clear, high load water miscible emulsions of pyrethroid insecticides or triazole fungicides, as a single phase, translocatable composition which is free of xylene and alkylphenol ethoxylate surfactants and concentrate matrix for the active agricultural component at between about 5 and about 25 wt. % active concentration.
Abstract: A synergistic filler composition for making pharmaceutical tablets of sufficient tablet hardness at low compression force, and low friability, to preclude damage to the tablet upon further processing, and without requiring a substantial increase in the size of the tablet, comprising (a) a PVP-VA copolymer and (b) a microcrystalline cellulose.
Type:
Grant
Filed:
July 25, 2001
Date of Patent:
February 25, 2003
Assignee:
ISP Investments Inc.
Inventors:
Antonio Moroni, Nadhamuni G. Nerella, Gregory Du Browny
Abstract: What is described herein is a clear white-appearance, water-resistant, color ink-receptive film having a copolymer of (a) vinyl caprolactam and (b) dimethylaminopropyl methacrylamide coated thereon; preferably the weight ratio of (a):(b) is 50-95:50-5; optimally about 80:20. The ink-receptive film of the invention is capable of being printed from a color inkjet printer to form color images thereon which exhibit excellent long-term color stability towards light. These advantageous results are achieved herein while retaining the desired properties of rapid ink dry time, good print quality, highly resolved circular dots, and high, uniform optical density, characteristic of other systems.