Patent ID: 7812080

Claim:
A foam prepared from a plastisol by a process comprising: forming a plastisol blowing agent precursor blend, the plastisol including a dispersed phase comprising particles of an organic polymer, wherein the organic polymer is selected from the group consisting of homopolymers and copolymers of vinyl chloride, and a liquid phase comprising a plasticizer for said polymer, the plasticizer having a hydroxyl number of 30 or greater, and an acidity of not more than about 0.1% as benzoic acid; and heating the plastisol blowing agent precursor blend to a temperature effective for gelling the plastisol and fusing and blowing the plastisol to form the foam; wherein the plasticizer is at least one member selected from the group consisting of diesters and monoesters of benzoic acid and diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, M P Diol , neopentyl glycol and 1,3-butanediol and the combination thereof, and wherein the plasticizer is effective for providing the foam with a color of less than 28YI.