Patents by Inventor John Ta-Yuan Lai

John Ta-Yuan Lai 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: 20150376325
    Abstract: This invention relates to polymers made from low molecular weight polyamide oligomers and telechelic polyamides (including copolymers) containing N-alkylated amide groups in the backbone structure. The described telechelic polyamides are used as the soft segment in the described TPU. These telechelic polyamides are unique in that they have an unexpectedly low glass-transition (desirably 30 degrees C. or lower) which makes them suitable for further reaction and polymerization, allowing for the formation of the described TPU. The resulting TPU can provide improved hydrolytic, oxidative and/or thermal stability as well as improved adhesion to other materials, especially polar materials.
    Type: Application
    Filed: February 4, 2014
    Publication date: December 31, 2015
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Naser Pourahmady, Umit G. Makal, Gabor Erdodi, John Ta-Yuan Lai
  • Publication number: 20150203692
    Abstract: Non-halogenated monomers that can be polymerized into flame retardant polymers, and processes to produce the monomers and polymers is provided. In a simplest aspect, there is provided a monomer composition that can comprise a) a group derived from one of a (meth)acrylic acid, (meth)acrylamide, or vinylbenzene, b) a polyphosphate moiety, and c) an amine species. In the monomer composition, the ethylenically unsaturated monomer of (a) is covalently bonded directly or through a linking group to the moiety of b), forming a precursor monomer unit. The amine species of c) is in complex with the precursor monomer unit. The polymer can be a homopolymer of the monomer composition, or a copolymer of the monomer composition having varying a), b) and c). In one embodiment, the polymer can additionally comprise ethylenically unsaturated monomers not covalently bonded to a polyphosphate moiety.
    Type: Application
    Filed: October 31, 2012
    Publication date: July 23, 2015
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Ti Chou
  • Patent number: 8901223
    Abstract: This invention relates to polymers containing structural units derived from itaconic acid which are useful as binders for fiberglass.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: December 2, 2014
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Gary A. Anderle, Ti Chou
  • Publication number: 20140296463
    Abstract: This invention relates to polymers containing structural units derived from itaconic acid which are useful, including uses as binders for fiberglass.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Gary A. Anderle, Ti Chou
  • Publication number: 20140296396
    Abstract: Non-halogenated monomers that can be polymerized into flame retardant polymers, and processes to produce the monomers and polymers is provided. In a simplest aspect, there is provided a monomer composition that can comprise a) a group derived from one of a (meth)acrylic acid, (meth)acrylamide, or vinylbenzene, b) a polyphosphate moiety, and c) an amine species. In the monomer composition, the ethylenically unsaturated monomer of (a) is covalently bonded directly or through a linking group to the moiety of b), forming a precursor monomer unit. The amine species of c) is in complex with the precursor monomer unit. The polymer can be a homopolymer of the monomer composition, or a copolymer of the monomer composition having varying a), b) and c). In one embodiment, the polymer can additionally comprise ethylenically unsaturated monomers not covalently bonded to a polyphosphate moiety.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 2, 2014
    Inventors: John Ta-Yuan Lai, Ti Chou
  • Patent number: 8709543
    Abstract: Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: April 29, 2014
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Anthony D. Pajerski, Ronald P. Shea
  • Publication number: 20130248753
    Abstract: This invention relates to polymers containing structural units derived from itaconic acid which are useful as binders for fiberglass.
    Type: Application
    Filed: December 1, 2011
    Publication date: September 26, 2013
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: John Ta-Yuan Lai, Gary A. Anderle, Ti Chou
  • Patent number: 8492576
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 23, 2013
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Publication number: 20120171914
    Abstract: Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.
    Type: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: John Ta-Yuan Lai, Anthony D. Pajerski, Ronald P. Shea
  • Patent number: 8137754
    Abstract: Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: March 20, 2012
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Anthony D. Pajerski, Ronald P. Shea
  • Patent number: 7851582
    Abstract: Dithiocarbonate derivatives are disclosed, along with a process for preparing the same. The dithiocarbonate compounds can be utilized as initiators, chain transfer agents and/or terminators in controlled free radical polymerizations. The dithiocarbonates can be used to produce polymers having narrow molecular weight distribution. Advantageously, the compounds of the present invention can also introduce functional groups into the resulting polymers. The dithiocarbonate compounds have low odor and are substantially colorless.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: December 14, 2010
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: John Ta-Yuan Lai
  • Patent number: 7659345
    Abstract: A s,s?-bis-(?,??-disubstituted-??-acetic acid)-trithiocarbonate and derivatives thereof can be used as an initiator, chain transfer agent, or terminator for polymerization of monomers such as free radical polymerizable monomers. Homopolymers, copolymers, and the like as well as block copolymers can be made utilizing the trithio carbonate compound such as in a living free radical polymerization as well as to form telechelic polymers.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: February 9, 2010
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: John Ta-Yuan Lai
  • Publication number: 20090312496
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 17, 2009
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Patent number: 7557235
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: July 7, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Patent number: 7498456
    Abstract: Dithiocarbonate derivatives are disclosed, along with a process for preparing the same. The dithiocarbonate compounds can be utilized as initators, chain transfer agents and/or terminators in controlled free radical polymerizations. The dithiocarbonates can be used to produce polymers having narrow molecular weight distribution. Advantageously, the compounds of the present invention can also introduce functional groups into the resulting polymers. The dithiocarbonate compounds have low odor and are substantially colorless.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: March 3, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: John Ta-Yuan Lai
  • Patent number: 7495128
    Abstract: A s,s?-bis-(?, ??-disubstituted-??-acetic acid)-trithiocarbonate and derivatives thereof can be used as an initiator, chain transfer agent, or terminator for polymerization of monomers such as free radical polymerizable monomers. Homopolymers, copolymers, and the like as well as block copolymers can be made utilizing the trithiocarbonate compound such as in a living free radical polymerization as well as to form telechelic polymers.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: February 24, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: John Ta-Yuan Lai
  • Patent number: 7495050
    Abstract: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: February 24, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Shui-Jen Raymond Hsu
  • Patent number: 7423082
    Abstract: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: September 9, 2008
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Shui-Jen Raymond Hsu, Krishnan Tamareselvy
  • Publication number: 20080214773
    Abstract: Dithiocarbonate derivatives are disclosed, along with a process for preparing the same. The dithiocarbonate compounds can be utilized as initators, chain transfer agents and/or terminators in controlled free radical polymerizations. The dithiocarbonates can be used to produce polymers having narrow molecular weight distribution. Advantageously, the compounds of the present invention can also introduce functional groups into the resulting polymers. The dithiocarbonate compounds have low odor and are substantially colorless.
    Type: Application
    Filed: February 25, 2008
    Publication date: September 4, 2008
    Inventor: John Ta-Yuan Lai
  • Publication number: 20080153982
    Abstract: Block copolymers comprising polyols and/or siloxanes and vinyl-thiocarbonate blocks can be made by reacting a thiocarbonate compound such as a dithio- or trithiocarbonate with generally any hydroxyl-terminated polysiloxane via an esterification reaction. The polysiloxane can have a very wide number average molecular weight range and can be chain extended and/or crosslinked as by using a polyisocyanate or a polycarboxylic acid. Desirably, vinyl compounds are then reacted in situ into the thiocarbonate to increase molecular weight thereof. The block copolymers can be used in personal care applications.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 26, 2008
    Inventors: John Ta-Yuan Lai, William F. Masler