Patent ID: 8653171
Filing Date: 2014-02-18
Classification: C08K,C08L,C09D,D06P,Y10T

Abstract:
1. A plastisol composition that is essentially free of polyvinyl halides and phthalate plasticizers, comprising: (a) methacrylate core/shell copolymer; (b) non-phthalate ester plasticizer comprising a blend of dibenzoate and di(isononyl)cyclohexane-1,2-dicarboxylate; (c) pigment; (d) filler; and (e) thixotropic agent; wherein the dibenzoate ester is selected from the group consisting of 2,2,4-trimethyl-1,3-pentanediyl dibenzoate, dipropylene glycol dibenzoate, and a blend of both, and wherein relative ratio of the dibenzoate to the di(isononyl)cyclohexane-1,2-dicarboxylate is determined by gelation temperature of the plastisol (G′/G″cross-over) in a parallel plate rheometer under conditions of a dynamic temperature ramp (3° C./min) occurring at a temperature between 79° C. and 89° C.