Patents by Inventor Lien Phan

Lien Phan 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: 6541566
    Abstract: A pressure sensitive adhesive which is prepared by emulsion polymerizing an ethylenically unsaturated monomer and 0.01 to 2 pphm of a sterically hindered alkoxylated silane monomer. The silane crosslinks during film formation to provide the adhesive with increased shear strength without the disadvantage of decreased loop tack. The sterically hindered alkoxylated silane monomer has the structure R1—Si—(OR2)n(R3)3−n wherein R1 is selected from the group consisting of an alkylene, arylene, and aralkylene group; R2 is independently a sterically hindered alkyl group having 3 to 10 carbon atoms in a straight or branched chain configuration; R3 is a monovalent alkyl group having 1 to 10 carbon atoms; and n is an integer of from 1 to 3.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: April 1, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Douglas N. Boutillier, Lien Phan, Patrick J. Hayes, Arnold S. Baird
  • Patent number: 6258460
    Abstract: A coating composition having increased block resistance comprising a polymer prepared by emulsion polymerizing at least one ethylenically unsaturated non-carboxy functional monomer, from 0.01 to 2 pphm of a sterically hindered alkoxylated silane monomer, and at least one anionic surfactant, wherein the polymer is crosslinked during film formation. The sterically hindered alkoxylated silane monomer has the structure R′—Si—(OR2)n(R3)3-n wherein R1 is selected from the group consisting of an alkylene, arylene, and aralkylene group; R2 is independently a sterically hindered alkyl group having 3 to 10 carbon atoms in a straight or branched chain configuration; R3 is a monovalent alkyl group having 1 to 10 carbon atoms; and n is an integer of from 1 to 3.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: July 10, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Lien Phan, Rajeev Farwaha, Judie Mae Tiinamisan
  • Patent number: 6174960
    Abstract: A non-aqueous—organic-solvent-free coating composition having increased block resistance comprising an acrylic modified ethylene-vinyl acetate (EVA) polymer blend, wherein the acrylic polymer is prepared by emulsion polymerizing at least one ethylenically unsaturated non-carboxy functional monomer, from 0.01 to 2 pphm of a sterically hindered alkoxylated silane monomer, and at least one anionic surfactant, and the ethylene-vinyl acetate polymer is prepared by emulsion polymerizing ethylene and vinyl acetate.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: January 16, 2001
    Assignee: National Starch and Chemical Investmnent Holding Corporation
    Inventors: Lien Phan, Rajeev Farwaha
  • Patent number: 6096824
    Abstract: A paper saturant composition comprising an aqueous emulsion polymer prepared by reacting at least one ethylenically unsaturated monomer and from about 0.1 to about 5 weight percent, based on the total weight of ethylenically unsaturated monomer, of a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety. Paper saturated with the emulsion is especially useful in the production of core sheets used to prepare decorative laminates.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: August 1, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Lien Phan, Rajeev Farwaha, Steven P. Pauls, Sr., Alan J. Blackie
  • Patent number: 6001927
    Abstract: Latex paint compositions containing water, pigment and a latex wherein the latex is prepared by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of 0.1 to 0.2 pphm of at least one hydrophobically modified starch having the structure ##STR1## In the above structure, St is a starch base material, R.sup.1 is a dimethylene or trimethylene group, R.sup.2 is selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl groups having 2 to 20 carbon atoms, and Y is selected from the group consisting of hydrogen, alkali metal, alkaline earth metal and ammonium. The hydrophobically modified starch is the reaction product of starch and an anhydride moiety and provides the latex paint with improved rheological properties and allows for easier spreading and less dripping of paint.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: December 14, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Robert L. Billmers, Rajeev Farwaha, Godric S. Yearwood, Lien Phan
  • Patent number: 5969032
    Abstract: The invention relates to an emulsion polymerization process for preparing a latex binder for use in paint. The process involves reacting a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety with at least one ethylenically unsaturated monomer and ionic monomer at a pH from about 2 to about 7. Significantly lower levels of the polymerizable surfactants are required to control the latex particle size and to stabilize the latex particles at high solids content as compared to the amount of conventional anionic surfactants used to stabilize a latex.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: October 19, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Lien Phan, Rajeev Farwaha
  • Patent number: 5959024
    Abstract: The present invention is directed to the use of nonpolymerizable, hydrophobically-modified saccharides as emulsion stabilizers during the synthesis of acrylic latexes, and coating compositions prepared with the acrylic latexes which has been prepared using the saccharide stabilizers.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: September 28, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Lien Phan, John S. Thomaides, Judie Mae Tinamisan
  • Patent number: 5928783
    Abstract: The invention relates to a pressure sensitive adhesive prepared from an aqueous emulsion polymer. The polymer is prepared by reacting at least one ethylenically unsaturated monomer and from about 0.1 to about 5 weight percent, based on the total weight of ethylenically unsaturated monomer, of a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety. The pressure sensitive adhesives may be used in all types of tapes, labels, decals, packaging, electrical insulation, and surgical bandaging.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: July 27, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Lien Phan, Rajeev Farwaha, Patrick J. Hayes
  • Patent number: 5610225
    Abstract: Freeze-thaw stable latex binders and latex paint compositions are prepared without the use of volatile freeze-thaw additives. The latex binder contains a polymer which is the emulsion polymerization product of a polymerizable polyethylene glycol (PPEG) monomer, wherein the molecular weight of the ethylene oxide moiety in the PPEG monomer is from about 175 to 1,100, at least one acrylic monomer and, optionally, one or more styrenic, ionic or wet adhesion monomers. Methods for preparing the freeze-thaw stable latex compositions are also disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: March 11, 1997
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Lien Phan, William Currie
  • Patent number: 5530056
    Abstract: Freeze-thaw stable latex binders and latex paint compositions are prepared without the use of volatile freeze-thaw additives. The latex binder contains a polymer which is the emulsion polymerization product of a polymerizable polyethylene glycol (PPEG) monomer, wherein the molecular weight of the ethylene oxide moiety in the PPEG monomer is from about 175 to 1,100, at least one acrylic monomer and, optionally, one or more styrenic, ionic or wet adhesion monomers. Methods for preparing the freeze-thaw stable latex compositions are also disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: June 25, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Lien Phan, William Currie
  • Patent number: 5455298
    Abstract: The invention relates to an acrylic polymer latex comprising the polymerization product of an acetoacetate moiety of the structure ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of C.sub.1 -C.sub.22 alkyl groups and X is a halogen, in amounts effective to improve the water resistance of the acrylic latex; and at least one monomer(s) selected from the group consisting of C.sub.3 -C.sub.6 monocarboxylic acids, C.sub.4 -C.sub.6 dicarboxylic acids and their C.sub.1 -C.sub.4 half esters, C.sub.1 -C.sub.10 alkyl esters of acrylic acid, C.sub.1 C.sub.10 alkyl esters of methacrylic acid, styrene, halogenated styrene and substituted styrene and latex compositions containing the novel latexes.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: October 3, 1995
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Lien Phan, William Currie