Patents Represented by Attorney, Agent or Law Firm Walter Katz
  • Patent number: 6706147
    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: December 9, 2002
    Date of Patent: March 16, 2004
    Assignee: Building Materials Investment Corporation
    Inventors: Qinyun Peng, Krishna Srinivasan
  • Patent number: 6706817
    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.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: March 16, 2004
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jeffrey A. Lynn
  • Patent number: 6682188
    Abstract: An inkjet printing composition for coating a substrate to receive dye images thereon includes: (a) a polymer for absorbing said dye images, and (b) a dye fixative therein to inhibit migration of dye images from one part of the substrate to other portions thereof.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: January 27, 2004
    Assignee: ISP Investments Inc.
    Inventors: Stephen L. Kopolow, John M C Kittrick, Michael Tallon
  • Patent number: 6667029
    Abstract: A stable, aqueous cationic hydrogel of, by weight, 1-50% of a crosslinked cationic copolymer of 5-95% vinylpyrrolidone (VP) and 5-95% 3-dimethylaminopropyl(meth)acrylamide (DMAPMA) monomers, a crosslinking agent in an amount of 0.05-1% of said monomers, and water is described. The hydrogel has a pH of about 10 and a Brookfield viscosity of about 650 (Model DV-II+, RV spindle #3, speed 10 rpm); it can increase its viscosity by up to 40× at a pH of 3-9 and absorb up to 200× its weight of water. The hydrogel also can effectively condition hair even in the presence of an anionic surfactant.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: December 23, 2003
    Assignee: ISP Investments Inc.
    Inventors: Yuanzhen Zhong, Janusz Jachowicz, Philip F. Wolf, Roger L. Mc Mullen, Jr.
  • Patent number: 6664356
    Abstract: This invention relates to a non-leachable, oil based carrier derived from the anhydrous free radical solution polymerization of a water insoluble acrylate and/or acrylamide monomer in an oil medium for use in long lasting skin lubricating formulations.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: December 16, 2003
    Assignee: ISP Investments Inc.
    Inventor: Jenn S. Shih
  • Patent number: 6641259
    Abstract: A method of color inkjet printing on a substrate coated with a substantially colorless, 90-10 to 30-70, wt/wt, copolymer of vinyl pyrrolidone and vinyl imidazole, by inkjet printing dye images on the thus-coated substrate, characterized in that the dye images obtained exhibit excellent light fastness.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 4, 2003
    Assignee: ISP Investments Inc.
    Inventors: Stephen L. Kopolow, Drupesh Patel, Yoon Tae Kwak, Michael Tallon, David K. Hood, Laurence Senak, John M C Kittrick
  • Patent number: 6624271
    Abstract: A process for making a solution of a copolymer of maleic anhydride (MA) and methyl vinyl ether (MVE) monomers the specific viscosity (SV) of the product being about 2.5-6, preferably 3-5, indicating a weight average molecular weight of substantially above one million, preferably above 1.5 million and a solids content of about 20-45%, preferably 30-40, in isopropyl acetate (IPAc), solvent includes the steps of (a) precharging part of MVE in IPAc into a reactor heated to about 50-90° C., and then (b) feeding (i) a solution of MA in IPAc, (ii) the rest of MVE, at a mole ratio of MA:MVE of 1:≧1.5 to 1:<3, preferably 1:2.4, and (iii) a free radical initiator dissolved in IPAc, in an amount of 0.02-0.3%, preferably 0.05-0.2%, based on total monomers, into the reactor over time. Powders of such MA/MVE copolymers are made by removing the solvent from the solution.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: September 23, 2003
    Assignee: ISP Investments Inc.
    Inventors: Yoon Tae Kwak, Stephen L. Kopolow, Alan J. Carlin
  • Patent number: 6624242
    Abstract: An aqueous dispersion of (a) 0.1-40% by wt. of a low molecular weight, low melting point, water-insoluble polymer in which the polymer particles have a size <10 microns, and (b) 0.001-30% by wt. of an anionic emulsifier.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: September 23, 2003
    Assignee: ISP Investments Inc.
    Inventors: James F. Curry, Kolazi S. Narayanan, Ronald H. Goehner, Jr., Domingo I. Jon, George B. Beestman
  • Patent number: 6620900
    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
  • Patent number: 6620521
    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.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 16, 2003
    Assignee: ISP Investments Inc.
    Inventors: Yoon Tae Kwak, Stephen L. Kopolow
  • Patent number: 6620426
    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
  • Patent number: 6616740
    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
  • Patent number: 6617372
    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.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: September 9, 2003
    Assignee: ISP Investments Inc.
    Inventor: Laurence Senak
  • Patent number: 6585988
    Abstract: A method of controlling the regulatory mechanism in humans that governs cell division in a damaged cell structure which comprises reactivating the proliferative phase regulated by DNA, to enable the damaged cell to redifferentiate itself according to its basic genetic code, by administering to the human the reaction product of arginine and p-aminobenzoic acid. A method in which said reactivation process suppresses sexual inflammations, enhances positive neural responses, precludes aggressive bacterial infections, promotes internal wound healing, and/or provides an infusible treatment for non-specific prostatitis.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: July 1, 2003
    Assignee: Epicare Ltd.
    Inventor: Steven R. Schutt
  • Patent number: 6586386
    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.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: July 1, 2003
    Assignee: ISP Investments Inc.
    Inventors: Bala Srinivas, Purvita Patel
  • Patent number: 6586387
    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.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: July 1, 2003
    Assignee: ISP Investments Inc.
    Inventors: Bala Srinivas, Jenn S. Shih
  • Patent number: 6583202
    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
  • Patent number: 6583225
    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.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: June 24, 2003
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jeffrey A. Lynn
  • Patent number: 6569973
    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
  • Patent number: 6566473
    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.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: May 20, 2003
    Assignee: ISP Investments Inc.
    Inventors: Donald I. Prettypaul, Jenn S. Shih