Plasticizer blend for polyvinyl butyral

Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant

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428412, 428437, B32B 2736

Patent

active

045632960

ABSTRACT:
A plasticizer blend for polyvinyl butyral (PVB) comprising a monoester of a glycol and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule and a multiester of an alcohol having 2 to 4 hydroxyl groups and said unsaturated fatty acid, the monoester being present in the blend on a weight basis in an amount equal to or greater than the multiester. The low temperature penetration resistance and adhesion properties of PVB sheet plasticized with such blend is improved without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in contact therewith in a laminated glass assembly.

REFERENCES:
patent: 2433097 (1947-12-01), Debacher
patent: 2433098 (1947-12-01), Debacher
patent: 2453569 (1948-11-01), Debacher
patent: 2453570 (1948-11-01), Debacher
patent: 3388034 (1968-06-01), McCombie
patent: 3402139 (1968-09-01), Mont et al.
patent: 3671370 (1972-06-01), Littell, Jr.
patent: 4128694 (1978-12-01), Fabel et al.
The Baker Castor Oil Company, "Castor Oil and Chemical Derivatives", Technical Bulletin 123, Copyright 1970, pp. 1, 2, 3, 12 and 13.

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