Polyethylene terephthalate blends

Details Polyethylene terephthalate blends Polyethylene terephthalate blends

1983-08-22

1984-11-20

Griffin, Ronald W.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

260DIG35, 523500, 523522, 523523, 523526, 523527, 524504, 524505, 524513, 525176, C08L 6702

Patent

active

044839499

ABSTRACT:
Thermoplastic compositions comprising, in intimate admixture, polyethylene terephthalate, a rubber-free copolymer of or a rubber-modified graft copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, a fibrous modifier, and a nucleating agent are disclosed. These compositions display desirable properties, particularly elevated heat deflection temperatures and good surface appearance.
Also disclosed is a process for producing articles by injection molding the compositions at a hold pressure of about 5,000 to about 10,000 psi.

REFERENCES:
patent: 3644574 (1972-02-01), Jackson et al.
patent: 3919354 (1975-11-01), Moore et al.
patent: 4038342 (1977-07-01), Schwartz
patent: 4100229 (1978-07-01), Schwartz
patent: 4131594 (1978-12-01), Nakamura et al.
patent: 4280948 (1981-07-01), Dieck
patent: 4346195 (1982-08-01), Hornbaker et al.

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