Title: Process for the production of polyurethane resin
Application Number: 85109549 Application Date: 1985.12.12
Publication Number: 1002877 Publication Date: 1986.09.03
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08G18/08;C08K5/52
Applicant(s) Name: Kao Corporation Address:
Inventor(s) Name: Yoshihiro Yamazaki
Attorney & Agent: QUAN JING WU DAJIAN
Abstract:
    A polyurethane with good stability against heat and light is obtained by using: a) an ultraviolet absorber; and b) a tertiary phosphite represented by general formula (I) wherein R1, R2 and R3 may be the same or different, and each represents an alkyl group, a cycloalkyl group, an aryl group, an alkylaryl group, or an arylalkyl group) and containing 4.0 to 14.0 wt. % phosphorus. An antioxidant or a nitrogen-containing compound may be optionally added to further improve the stability of the polyurethane.
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