Plasticized polyvinyl butyral interlayers process for...

Details Plasticized polyvinyl butyral interlayers process for... Plasticized polyvinyl butyral interlayers process for...

C - Chemistry, Metallurgy

08

K

6/223, 400/9262

C08K 5/10 (2006.01) B32B 17/10 (2006.01) B32B 27/06 (2006.01) B32B 27/22 (2006.01) B32B 27/30 (2006.01) C08J 5/18 (2006.01) C08L 29/04 (2006.01) C08L 29/14 (2006.01)

Patent

CA 1258941

PLASTICIZED POLYVINYL BUTYRAL INTERLAYERS PROCESS FOR FORMING SAME AND PLASTICIZER BLEND THEREFOR ABSTRACT In a polyvinyl butyral (PVB) sheet plasti- cized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C16 to C20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C16 to C20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

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