Patents by Inventor Jui-Chang Chuang

Jui-Chang Chuang 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).

  • Publication number: 20170121466
    Abstract: Provided are multifunctional polymers comprising at least one anhydride repeating unit with at least one pseudo-cationic moiety graft and at least one hydrophobic graft. The grafting functionalizations can occur before, during, or after polymerizing the monomer(s). The anhydride employed may be partially or fully opened to provide amic acids, carboxylic acids, carboxylic acidic salts, imides, esters, and mixtures thereof. The polymers also may comprise other repeating units, including, but not limited to, alpha-olefins. In one embodiment the polymers exhibit antimicrobial activity, and can be employed in a wide variety of compositions, including those where antimicrobial activity is useful. A method of providing microbial activity also is provided.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 4, 2017
    Inventors: Osama M. Musa, Xuejun Liu, Jui-Chang Chuang, Karen Winkowski
  • Publication number: 20150353666
    Abstract: Family of non-homopolymers synthesized from N-vinyl lactam, (meth)acrylic acid, hydrophobic (meth)acrylic ester of a straightchain or branched-chain alkyl alcohol and monomer selected from the group consisting of functionalized and unfunctionalized: dialkyl maleates, dialkyl fumarates, and combinations thereof. The non-homopolymers may exhibit solubility in one or more lower molecular weight alcohols and/or a glass transition temperature greater than 80° C.
    Type: Application
    Filed: February 27, 2014
    Publication date: December 10, 2015
    Applicant: ISP INVESTMENTS INS.
    Inventors: Jui-Chang CHUANG, Xuejun LIU, Osama M. MUSA, David C. STREULI
  • Publication number: 20150051352
    Abstract: Provided are multifunctional polymers comprising at least one anhydride repeating unit with at least one pseudo-cationic moiety graft and at least one hydrophobic graft. The grafting functionalizations can occur before, during, or after polymerizing the monomer(s). The anhydride employed may be partially or fully opened to provide amic acids, carboxylic acids, carboxylic acidic salts, imides, esters, and mixtures thereof. The polymers also may comprise other repeating units, including, but not limited to, alpha-olefins. In one embodiment the polymers exhibit antimicrobial activity, and can be employed in a wide variety of compositions, including those where antimicrobial activity is useful. A method of providing microbial activity also is provided.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 19, 2015
    Inventors: Osama M. Musa, Xuejun Liu, Jui-Chang Chuang, Karen Winkowski
  • Publication number: 20150044161
    Abstract: Described herein are multifunctional polymers comprising a first repeating unit having at least one pseudo-cationic moiety, a second repeating unit having at least a hydrophobic moiety, and a third repeating unit, where the weight-average molecular weight is less than about 10,000 Da. In one embodiment the polymers exhibit antimicrobial activity. Also provided are compositions formulated with the multifunctional polymers, and a method of providing antimicrobial activity.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 12, 2015
    Applicant: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Xuejun Liu, Osama M. Musa, Karen Winkowski
  • Publication number: 20130261275
    Abstract: Polymers are provided that offer gas hydrate inhibition, salt tolerance, and high cloud point. The polymers are polymerized from at least (A) 50 mole percent or more of a monomer selected from the group consisting of: N-vinyl-2-caprolactam, one of its analogues, and combinations thereof, (B) an alkenyl sulfonic acid monomer, salt thereof, or combinations thereof, and (C) an TV-vinyl amide, a (meth)acrylamide or one of its analogues, or combinations thereof. In one embodiment, the (A) monomer is N-vinyl-2-caprolactam, the (B) monomer is 2-acrylamido-2-methylpropane sulfonic acid or salt thereof, and the (C) monomer is N-vinyl-2-pyrrolidone, acrylamide, methacrylamide, or combinations thereof.
    Type: Application
    Filed: October 19, 2011
    Publication date: October 3, 2013
    Applicant: ISP Investments Inc.
    Inventors: Osama M. Musa, Jui-Chang Chuang, Yi Zhang, Jun Zheng
  • Publication number: 20060083705
    Abstract: A copolymer of a vinyl lactam and vinyl carbazole useful in personal care compositions.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 20, 2006
    Inventors: Janusz Jachowicz, Jui-Chang Chuang, Roger Mc Mullen, Thomas Winkler
  • Publication number: 20050089490
    Abstract: What is described herein is a hair care composition including a water soluble or water dispersible styling polymer characterized by a glass transition temperature below room temperature, and a gel-forming polymer which has a glass transition temperature higher than or lower than room temperature.
    Type: Application
    Filed: September 27, 2004
    Publication date: April 28, 2005
    Inventors: Janusz Jachowicz, Jui-Chang Chuang, Roger McMullen, Susan Chen
  • Patent number: 6852815
    Abstract: What is described herein are conditioning/styling tetrapolymers of vinyl caprolactam (VCL), vinylpyrrolidone (VP), dimethylaminopropyl methacrylamide (DMAPMA) and C8-C24 alkyl quaternized dimethylaminopropyl (meth)acrylamide or methacrylic acid quaternized monomers (QDMAPMA), in a defined compositional range. Hair and skin care compositions which include these tetrapolymers exhibit advantageous low tackiness and high humidity resistance.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: February 8, 2005
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Janusz Jachowicz, Thomas Winkler, Allen J. Krauss
  • 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
  • Publication number: 20030008993
    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: Application
    Filed: July 6, 2001
    Publication date: January 9, 2003
    Applicant: ISP INVESTMENTS INC.
    Inventors: Jui-Chang Chuang, Jenn S. Shih, Michael A. Drzewinski
  • Patent number: 6432355
    Abstract: Described herein is a process of corrosion inhibition of a steel pipeline during transport of water and gas, or water and an oil, or mixtures thereof, therethrough, including introducing a copolymer of vinyl caprolactam and vinylpyridine into said pipeline.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 13, 2002
    Assignee: ISP Investments Inc.
    Inventors: Kirill N. Bakeev, Jui-Chang Chuang, Thomas Winkler, Michael A. Drzewinski, David E. Graham
  • Patent number: 6300442
    Abstract: A process of making a cosmetically or pharmaceutically-acceptable emulsion or gel composition which comprises: (a) heating a reaction mixture comprising, by weight, about 5-70% of a vinyl monomer in about 30-95% of an oil as solvent, wherein said oil is selected from the group consisting of a silicone oil, a mineral oil and a water-insoluble organic ester and a free radical initiator, optionally in the presence of a crosslinking agent and/or an oil soluble surfactant, with agitation, under an inert gas, at about 40-150° C., wherein the oil is present in an amount sufficient to keep the resultant vinyl polymer in a stirrable state until the end of the polymerization, (b) adding a surfactant, if a suitable surfactant was not present during polymerization, and, (c) then adding water to form an oil-in-water, a water-in-oil or a water-in-oil-in-water emulsion or gel, in a volume ratio of oil-in-water of 30:70 to 10:90, or water-in-oil of 90:10 to 30:70.
    Type: Grant
    Filed: March 13, 1999
    Date of Patent: October 9, 2001
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jui-Chang Chuang, Jenn S. Shih
  • Patent number: 6281274
    Abstract: A composition for preventing or retarding the formation of gas hydrates during the transport of a fluid comprising water and a hydrocarbon through a conduit. The composition is a copolymer of vinyl caprolactam and vinyl pyridine, and terpolymers thereof, with vinyl pyrrolidone, preferably including 70-97% by weight vinyl caprolactam. Suitably such polymers have a molecular weight in the range of 500 to 2500, and are made in a polymerization solvent, preferably a glycol ether, most preferably, 2-butoxyethanol; and also including a carrier solvent, preferably monoethylene glycol.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 28, 2001
    Assignee: ISP Investments Inc.
    Inventors: Kirill N. Bakeev, Jui-Chang Chuang, Thomas Winkler, Michael A. Drzewinski, David E. Graham
  • Patent number: 6255421
    Abstract: A non-aqueous, heterogeneous polymerization process comprises heating a reaction mixture of about 5-70%, preferably 10-30%, by weight, of a vinyl monomer in an oil as solvent, 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: December 10, 1997
    Date of Patent: July 3, 2001
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jui-Chang Chuang, Jenn S. Shih
  • Patent number: 6242518
    Abstract: A composition for preventing or retarding the formation of gas hydrates during the transport of a fluid comprising water and a hydrocarbon through a conduit. The composition is a homopolymer of vinyl caprolactam, or copolymers thereof, having a low molecular weight in the range of 500 to 4000, which is made by polymerization of the monomer or monomers in a polymerization solvent which is a mixture of a glycol ether and water, preferably 2-butoxyethanol and water, at a pH of about 8-12.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: June 5, 2001
    Assignee: ISP Investments Inc.
    Inventors: Kirill N. Bakeev, Randall Myers, Jui-Chang Chuang, Thomas Winkler, Allen Krauss
  • Patent number: 6225429
    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 1, 1999
    Date of Patent: May 1, 2001
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Michael A. Drzewinski
  • Patent number: 6177068
    Abstract: A cosmetically active oil-in-water (o/w) or water-in-oil (w/o) emulsion, for topical applications comprising (a) the reaction product of a non-aqueous, heterogeneous polymerization of a liquid reaction mixture containing between about 5 and about 70%, preferably 10-40%, by weight, of N-vinylamide monomer in an oil solvent, a free radical initiator, between about 0.1 and about 2.5% by weight of a crosslinking agent and optionally a surfactant, (b) water sufficient to form said emulsion, (c) a cosmetically active hair and/or skin treating chemical or chemical composition and optionally (d) a surfactant.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: January 23, 2001
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Jui-Chang Chuang, Krystyna Plochocka
  • Patent number: 6117929
    Abstract: A composition is provided herein for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit. The composition is a homopolymer of vinyl caprolactam having the low molecular weight in the range of 500 to 2500, or copolymers thereof, in a defined solvent. Such homopolymers and copolymers preferably are made and applied in the defined solvent, which, most preferably, is a glycol ether such as 2-butoxyethanol.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: September 12, 2000
    Assignee: ISP Investments Inc.
    Inventors: Kirill N. Bakeev, Jui-Chang Chuang, Michael A. Drzewinski, David E. Graham
  • Patent number: 6048522
    Abstract: A controlled-release, drug-delivery, emulsion composition for topical application comprising (a) the reaction product of the non-aqueous, heterogeneous polymerization of a reaction mixture of about 5-70%, preferably 10-30%, by weight, of a vinyl monomer in an oil as solvent, 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, (b) water, (c) a surfactant and (d) a pharmaceutical medicament.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: April 11, 2000
    Assignee: ISP Investments Inc.
    Inventors: Krystyna Plochocka, Jui-Chang Chuang, Jenn S. Shih, Anil Menon, Nadhamuni G. Nerella
  • Patent number: 5972329
    Abstract: An improved hydrocarbon tolerant, aerosol hair spray resin composition includes a fixative polymer which is a tetrapolymer consisting essentially of (1) vinyl acetate, (2) vinyl neodecanoate or vinyl neononanoate, (3) monoisobutyl maleate and (4) N-t-butyl acrylamide, N-t-octyl acrylamide, or isobornyl (meth)acrylate, in a molar ratio from 10:10:15:1 to 26:1:15:1, preferably in a molar ratio of 12.5:7.5:15:1, exhibits advantageous small spray particle size, short tack and drying times, and hydrolytic stability, which are the desired performance characteristics on hair.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: October 26, 1999
    Assignee: ISP Investments Inc.
    Inventors: Jui-Chang Chuang, Jenn S. Shih, Russell B. Biss