Molding compositions of polyvinylbutyral blend

Details Molding compositions of polyvinylbutyral blend Molding compositions of polyvinylbutyral blend

1991-11-21

1992-07-14

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 61, 524443, 524504, 524507, C08L 2914

Patent

active

051303701

ABSTRACT:
A melt blended thermoplastic molding composition consisting essentially of, on a weight basis: (A) 40 to 70 parts plasticized polyvinyl butyral; (B) 60 to 30 parts poly(methylmethacrylate); (C) 0 to 15 parts filler; (D) 0 to 30 parts elastomeric graft polymer; and 0 to 30 parts thermoplastic polyurethane; provided that at least 10 parts of (D) or (E) or mixtures of (D) and (E) is present; and the sum of (A)+(B)+(C)+(D)+(E) is always 100.

REFERENCES:
patent: 4065428 (1977-12-01), Deets
patent: 4537830 (1985-08-01), Hermann et al.
patent: 4552915 (1985-11-01), Fujita et al.
patent: 4902464 (1990-02-01), Cartier et al.

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