Process for forming plasticized polyvinyl butyral interlayers

Details Process for forming plasticized polyvinyl butyral interlayers Process for forming plasticized polyvinyl butyral interlayers

1985-02-27

1986-08-05

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264158, 264171, 264176R, 264349, B29B 1110, B29B 1102

Patent

active

046042539

ABSTRACT:
In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 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 C.sub.16 to C.sub.20 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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The Baker Castor Oil Company, "Castor Oil and Chemical Derivatives", Technical Bulletin 123, pp. 1, 2, 3, 12 and 13.

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