Patents by Inventor Serkan Unal

Serkan Unal 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).

  • Polyurethane dispersions for use in personal care products
    Patent number: 7445770
    Abstract: The invention relates to an aqueous polyurethane dispersion suitable for use in personal care products, the dispersed polyurethane comprising the reaction products of: A) a prepolymer according to the formula: wherein R1 represents a bivalent radical of a dihydroxyl functional compound, R2 represents a hydrocarbon radical of an aliphatic or cycloaliphatic polyisocyanate, R3 represents a radical of a low molecular weight diol, optionally substituted with ionic groups, n is from 0 to 5, and m is >1; B) at least one chain extender according to the formula: H2N—R4—NH2 wherein R4 represents an alkylene or alkylene oxide radical not substituted with ionic or potentially ionic groups; and C) at least one chain extender according to the formula: H2N—R5—NH2 wherein R5 represents an alkylene radical substituted with ionic or potentially ionic groups.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: November 4, 2008
    Assignee: Bayer MaterialScience LLC
    Inventors: Yuliya Berezkin, Peter D. Schmitt, Serkan Unal
  • Polyurethane dispersions for use in personal care products
    Publication number: 20080226569
    Abstract: The invention relates to an aqueous polyurethane dispersion suitable for use in personal care products, the dispersed polyurethane comprising the reaction products of: A) a prepolymer according to the formula: wherein R1 represents a bivalent radical of a dihydroxyl functional compound, R2 represents a hydrocarbon radical of an aliphatic or cycloaliphatic polyisocyanate, R3 represents a radical of a low molecular weight diol, optionally substituted with ionic groups, n is from 0 to 5, and m is >1; B) at least one chain extender according to the formula: H2N—R4—NH2 wherein R4 represents an alkylene or alkylene oxide radical not substituted with ionic or potentially ionic groups; and C) at least one chain extender according to the formula: H2N—R5—NH2 wherein R5 represents an alkylene radical substituted with ionic or potentially ionic groups.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 18, 2008
    Inventors: Yuliya Berezkin, Peter D. Schmitt, Serkan Unal