Pigmented thermoplastic resins

Details Pigmented thermoplastic resins Pigmented thermoplastic resins

1985-09-05

1986-10-14

Bleutge, John C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524504, 525 64, 525 67, C08L 6702, C08L 6900

Patent

active

046173293

ABSTRACT:
A polymer blend comprises from about 60 parts to about 99.9 parts by weight of a pigmented thermoplastic resin, which resin is a polyester or a polycarbonate or mixtures thereof, and from about 0.1 part to about 40 parts of a sequentially produced multi-stage polymer. The multi-stage polymer comprises a polymer core of at least about 10 parts, based on the weight of the multi-stage polymer. The core is polymerized from a styrenic monomer, or a mixture of styrenic monomers. The styrenic monomer of the core comprises at least about 50% by weight of said core. A second monomer may be present and a crosslinking monomer for styrene is present in said core. The second stage of the multi-stage polymer comprises a polymeric soft stage and the outer stage of the multi-stage polymer is a rigid thermoplastic.

REFERENCES:
patent: 3218372 (1965-11-01), Okamura
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patent: 3793402 (1974-02-01), Owens
patent: 3971835 (1976-07-01), Myers
patent: 4026970 (1977-05-01), Backdert
patent: 4145380 (1979-03-01), Myers
patent: 4180494 (1979-12-01), Fromuth
patent: 4264487 (1981-04-01), Fromuth
patent: 4393169 (1983-07-01), Moriwaki

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