Patents by Inventor Jenn S. Shih

Jenn S. Shih has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5869442
    Abstract: A fabric softening composition capable of reducing the transfer of dyes during subsequent wash cycles comprising:I. an effective amount of fabric softening agent; andII. an effective amount of water-soluble polymeric dye transfer inhibitor which is a poly(vinylpyridine betainecontaining a quaternary nitrogen and a carboxylate salt having dye transfer inhibitor properties having the formula: ##STR1## where m defines a repeating unit; X is an anion;R and R.sub.2 are independently hydrogen, alkyl or aryl;n is 1-5; andM is a cation; and copolymers thereof.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: February 9, 1999
    Assignee: ISP Investments Inc.
    Inventors: Bala Srinivas, Jenn S. Shih, John C. Hornby
  • Patent number: 5863662
    Abstract: A terpolymer for ink jet recording comprises by weight, 1-99% of a vinyl lactam, preferably vinyl pyrrolidone, 1-99% of a polymerizable carboxylic acid, preferably acrylic acid and 1-99% of 2-carboxyethyl (meth)acrylate, preferably crosslinked with a polyfunctional aziridine, This terpolymer forms water-insoluble coatings on a support such as paper or polyester which are particularly receptive to water-based ink jet printing inks.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: January 26, 1999
    Assignee: ISP Investments Inc.
    Inventors: John C. Hornby, Domingo I. Jon, Jenn S. Shih
  • Patent number: 5863880
    Abstract: A laundry detergent composition suitable for washing colored fabrics includes a water soluble poly(4-vinylpyridine betaine) polymer containing a quaternary nitrogen and a carboxylate salt as a dye transfer inhibitor therein.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: January 26, 1999
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Bala Srinivas, John C. Hornby
  • Patent number: 5776879
    Abstract: This invention relates to dye complexing polymers, and, more particularly, to water soluble poly(vinylpyridine betaines) containing a quaternary nitrogen and a carboxylate salt. The polymers herein have effective dye transfer inhibitor (DTI) properties for use, for example, laundry detergent and fabric softener compositions.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: July 7, 1998
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Bala Srinivas, John C. Hornby
  • Patent number: 5686067
    Abstract: A low VOC (volatile organic compounds) hair spray composition having a combination of desirable user performance characteristics is described herein. The hair fixative resin in the composition is a terpolymer of 40-75% by weight of a vinyl lactam, preferably vinyl pyrrolidone, 15-40% of a polymerizable carboxylic acid, preferably acrylic acid or methacrylic acid, and 5-25% of a hydrophobic monomer, preferably a long chain alkyl (C.sub.8 -C.sub.24) acrylate, methacrylate, acrylamide or methacrylamide. The terpolymer has a K-value of 30-55, preferably 40-50, which provides compositions having good sprayability in both pump and aerosol form, and small, fine spray particles.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: November 11, 1997
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Colleen M. Rocafort, Robert B. Login
  • Patent number: 5608024
    Abstract: What is described herein is a process for making polymers of a vinyl lactam and a polymerizable carboxylic acid, optionally including a hydrophobic monomer, as a stable composition in an alcohol-water solvent system having a residual vinyl lactam content of less than 500 ppm.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: March 4, 1997
    Assignee: ISP Investments Inc.
    Inventor: Jenn S. Shih
  • Patent number: 5362830
    Abstract: Crosslinkable copolymers of (a) 80-99% by wt. vinylpyrrolidone (VP) and 1-20% by wt. of a tertiary-amine-containing polymerizable monomer, e.g. vinylimidazole (VI) or 4-vinylpyridine (VPy), and (b) 80-99% by wt. VP and 1-20% by wt. of an epoxide-containing polymerizable monomer, e.g. allyl glycidyl ether (AGE) or glycidyl acrylate (GA), are reacted in solution, e.g. water, alcohol, or mixtures thereof, at a predetermined temperature, e.g. 50.degree.-70.degree. C., in a wt. ratio (solids basis) of (a):(b) of about 2:1 to 1:2, preferably about 1:1, in a solution concentration of about 10-30% of each, to provide a crosslinked PVP product, in gel form, suitable for use as an electrolead on a conductive foilbacking, or for bandages and wound dressings, and as a controlled release media for pharmaceuticals.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: November 8, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Jenn S. Shih, Robert B. Login
  • Patent number: 5362815
    Abstract: A process for making a solution of PVP K-90 polymer having a weight average molecular weight, Mw, of about 630,000 to 750,000 and a molecular weight distribution, Mw/Mn, where Mn is the number average molecular weight of the polymer, of 5 or less, which comprises free radical polymerizing about 5-30% by weight vinylpyrrolidone, preferably 10-20%, at about 40.degree.-100.degree. C., preferably 60.degree.-75.degree. C., in an aqueous-alcohol solvent selected from the group consisting of about (a) 5% isopropanol-95% water, (b) 10% ethanol-90% water and (c) 20% methanol-80% water.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: November 8, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Jui-Chang Chuang, Robert B. Login
  • Patent number: 5322898
    Abstract: The invention relates to polymers containing units of the structure ##STR1## or mixtures of A with more than one of B, B-1 and B-2; wherein R and R.sup.1 are each independently C.sub.1 to C.sub.18 alkyl;R.sup.2 is oxygen, sulfur or --NR.sup.5 --;R.sup.5 is hydrogen or lower alkyl;R.sup.3 is alkylene having from 3 to 6 carbon atoms, optionally mono- or di- substituted with lower alkyl;W is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal;Y is alkylene;Z is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal or mixtures thereof;X is lower alkyl, a hydroxy phenyl radical or mixtures thereof;t has a value of from 2 to 8 andm, m', m" and n independently have a value of from 30 to 3,500 and n represents at least 5 mole percent of the polymeric product. The invention is also releated to the synthesis of the above polymers and to their use as superior adhesives which have significantly improved bond strength.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: June 21, 1994
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, Jenn S. Shih
  • Patent number: 5321110
    Abstract: What is provided herein are cationic polymer compositions comprising a cationic polymer of strongly swellable, moderately crosslinked vinyl lactam, e.g. vinylpyrrolidone, and a quaternized amino alkyl acrylamido or acrylate, e.g. quaternized dimethylaminopropyl methacrylamide or dimethylaminoethyl methacrylate, optionally including a polymerizable carboxylic acid, e.g. acrylic acid or methacrylic acid, which includes about 0.1-0.8% of a crosslinking agent therein. These polymer compositions, in a concentration of 1-10% by weight in aqueous and non-aqueous medium, provide effective thickener action while imparting cationic characteristics to the resulting solution.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: June 14, 1994
    Assignee: ISP Investments Inc.
    Inventor: Jenn S. Shih
  • Patent number: 5312619
    Abstract: A free-flowing, fine white powder of a substantially aqueous stable complex of a strongly swellable, moderately crosslinked polyvinylpyrrolidone (PVP) having an aqueous gel volume of about 15 to 150 ml/g of PVP and a Brookfield viscosity in 5% aqueous solution of at least about 10,000 cps, and H.sub.2 O.sub.2, in substantially a 1:1 molar ratio of said constituents.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: May 17, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, John J. Merianos, Terry E. Smith, Jui-Chang Chuang
  • Patent number: 5306795
    Abstract: What is provided herein is a process for making homopolymers of polyvinylpyrrolidone polymer in the form of fine powders at a polymer solids level of at least about 17%, preferably 30% or more, and in a yield of at least about 95%, which comprises precharging a reactor with a predetermined amount of a solvent selected from a C.sub.3 -C.sub.20 alkane, preferably heptane, or a C.sub.3 -C.sub.20 cycloalkane, preferably cyclohexane, and a free radical polymerization initiator, and feeding vinylpyrrolidone monomer into the precharged reactor at a selected rate, preferably about 0.1 to 1.8 g vinylpyrrolidone/min/1000 g of solvent, and most preferably, about 1 g/min/1000 g of cyclohexane and 0.5 g/min/1000 g of heptane, which rates preclude build-up of monomer during the polymerization, and for a feed period which provides the desired level of polymer solids in the reaction product, preferably at least about 200 minutes.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: April 26, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Terry E. Smith
  • Patent number: 5286826
    Abstract: A process for making highly crosslinked polyvinylpyrrolidone (PVP) polymer which has a low swell volume and is white in appearance comprising:(a) heating a reaction mixture comprising vinylpyrrolidone (VP) monomer at a VP concentration of about 70-95%, preferably 75-85%, by weight, in an aqueous basic solution containing about a 0.3-1.5%, preferably a 0.4-0.8% basic content, at a reaction temperature of about 130.degree.-170.degree. C., preferably 135.degree.-145.degree. C., and under an inert gas atmosphere, for a period of time sufficient to generate a crosslinker in situ,(b) diluting the basic reaction solution with water to reduce the VP concentration to about 5-30%, preferably 15-25%, and(c) polymerizing the diluted reaction solution at a polymerization temperature of about 100.degree. C. to provide a crosslinked PVP polymer having a swell volume of <45 ml/10 g.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: February 15, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Susan Y. Tseng
  • Patent number: 5286779
    Abstract: An emulsion polymerization composition comprises: (a) 1-45% by weight of an emulsion polymerizable monomer, (b) 0.1-5% by weight of an emulsifier and stabilizer which is a copolymer of a vinyl lactam and a polymerizable carboxylic acid, in a 99/1 to 1/99 weight ratio, (c) 1-10% of a surfactant based on monomer, preferably 2-6%, (d) 0.1-2%, preferably 0.2-1%, by weight of a polymerization initiator, and (e) the rest being water, in the form of an aqueous dispersion.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: February 15, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Jenn S. Shih, Domingo I. Jon, John C. Hornby
  • Patent number: 5283305
    Abstract: Crosslinkable copolymers of (a) 80-99% by wt. vinylpyrrolidone (VP) and 1-20% by wt. of a tertiary-amine-containing polymerizable monomer, e.g. vinylimidazole (VI) or 4-vinylpyridine (VPy), and (b) 80-99% by wt. VP and 1-20% by wt. of an epoxide-containing polymerizable monomer, e.g. allyl glycidyl ether (AGE) or glycidyl acrylate (GA), are reacted in solution, e.g. water, alcohol, or mixtures thereof, at a predetermined temperature, e.g. 50.degree.-70.degree. C., in a wt. ratio (solids basis) of (a):(b) of about 2:1 to 1:2, preferably about 1:1, in a solution concentration of about 10-30% of each, to provide a crosslinked PVP product, in gel form, suitable for use as an electrolead on a conductive foilbacking, or for bandages and wound dressings, and as a controlled release media for pharmaceuticals.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: February 1, 1994
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Jenn S. Shih, Robert B. Login
  • Patent number: 5252611
    Abstract: What is described herein is a controlled release, drug-delivery composition which comprises a strongly swellable, moderately crosslinked polyvinylpyrrolidone polymer in the form of fine white powders having a defined aqueous gel volume and Brookfield viscosity which is prepared by precipitation polymerization in the presence of a prescribed amount of crosslinking agent, and an effective amount of a pharmaceutical medicament.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: October 12, 1993
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Jui-Chang Chuang, Rama K. Haldar
  • Patent number: 5244974
    Abstract: The invention relates to polymers containing units of the structure ##STR1## or mixtures of A with more than one of B, B-1 and B-2; wherein R and R.sup.1 are each independently C.sub.1 to C.sub.18 alkyl;R.sup.2 is oxygen, sulfur or --NR.sup.5 --;R.sup.5 is hydrogen or lower alkyl;R.sup.3 is alkylene having from 3 to 6 carbon atoms, optionally mono- or di- substituted with lower alkyl;W is hydrogen --NH.sub.4, an alkali metal or an alkaline earth metal;Y is alkylene;Z is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal or mixtures thereof;X is lower alkyl, a hydroxy phenyl radical or mixtures thereof;t has a value of from 2 to 8 andm, m', m" and n independently have a value of from 30 to 3,500 and n represents at least 5 mole percent of the polymeric product. The invention is also related to the synthesis of the above polymers and to their use as superior adhesives which have significantly improved bond strength.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: September 14, 1993
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, Jenn S. Shih
  • Patent number: 5242985
    Abstract: What is described herein is a PVP-I.sub.2 composition comprising strongly swellable, lightly crosslinked PVP complex to iodine, wherein said composition is capable of releasing free iodine slowly with time in the presence of water. Preferably the complex has about 10-15% by weight available iodine and about 4-8 weight % iodide, and is a free-flowing, fine, lightly yellow powder.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: September 7, 1993
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, John J. Merianos
  • Patent number: 5236993
    Abstract: A method of crosslinking polyvinylpyrrolidone (PVP) at a predetermined pH which comprises (a) providing a tertiary amino-functional PVP as a starting material, (b) condensing said starting material with a predetermined amount of epichlorohydrin to form an epichlorohydrin-functional PVP copolymer, and, if less than an equivalent of epichlorohydrin in use, unreacted starting material, (c) acidifying the resultant copolymer to form a solution of a storage stable glycidyl quat intermediate, and (d) increasing the pH of the solution to above 7 to convert the glycidyl quat into a glycidyl epoxide, and (e) crosslinking the glycidyl epoxide with free amine group on the copolymer or as added amine functional PVP copolymer to form a crosslinked PVP polymer.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: August 17, 1993
    Assignee: ISP Investments Inc.
    Inventors: Robert B. Login, Jenn S. Shih, Jui-Chang Chuang
  • Patent number: 5225524
    Abstract: A process is described for rendering amino-group polymer solutions substantially odorless. In one embodiment, a solution of the terpolymer of vinyl pyrrolidone, vinyl caprolactam and dimethylaminoethyl methacrylate is treated with 0.1-10% by weight of an acidic compound or an acidic ion-exchange resin to render the solution substantially odorless. Other vinyl pyrrolidone polymer solutions in water and alcohol are treated similarly with equally effective results.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: July 6, 1993
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jenn S. Shih, Jui-Chang Chuang