Polyvinylbutyral films having improved optical properties

Details Polyvinylbutyral films having improved optical properties Polyvinylbutyral films having improved optical properties

1994-07-05

1996-11-12

Nakarani, D. S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

264175, 2641761, 428437, 524 95, 524100, 524503, B32B 1710, C08J 518

Patent

active

055738427

ABSTRACT:
A plasticized polyvinylbutyral film comprising a plasticizer, polyvinylbutyral, and an optical brightener in an amount effective to improve the optical properties and reduce the yellowing of the film. The resulting films are useful as intermediate films in multilayer laminated glass panes, including silicate-containing panes.

REFERENCES:
patent: 3823113 (1974-07-01), Reisman
patent: 4162254 (1979-07-01), Irick, Jr. et al.
patent: 5384346 (1995-01-01), Gutweiler et al.
Modern Plastics Encyclopedia, 1981-1982, pp. 710-719.

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