Fixative polymers
AssigneeISP Investments Inc.
InventorsJui-Chang Chuang, Jenn S. Shih, Russell B. Biss
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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.
Claims7
A suspension polymerization process of making the fixative 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 which said tetrapolymer has a molar ratio of 10:10:15:1 to 26:1:15:1, in the form of microspheres, which comprises polymerizing the monomer components in the presence of a dual initiator system which comprises a first low temperature initiator and a second, longer half-life, high temperature initiator.
Dependencies are inferred from the claim text.