Blend of polyalkylene terephthalate and wholly aromatic polyeste

Details Blend of polyalkylene terephthalate and wholly aromatic polyeste Blend of polyalkylene terephthalate and wholly aromatic polyeste

1981-12-15

1983-10-04

Ziegler, J.

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

Synthetic resins

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

C08L 6700

Patent

active

044080220

ABSTRACT:
A process is provided for forming a novel polymer blend which exhibits an anisotropic melt phase wherein there is chemical interaction between previously formed polymeric blend components to yield a product which is capable of forming shaped articles having highly satisfactory mechanical properties. The process comprises intimately mixing together approximately 50 to 75 percent by weight of polyalkylene terephthalate and 25 to 50 percent by weight of a melt processable polyester which is capable of forming an anisotropic melt phase. A post-polymerization subsequently is conducted in the solid phase in a non-oxidizing atmosphere at a temperature within the range of approximately 250.degree. to 300.degree. C. for a period of time in the range approximately 8 to 72 hours to yield the desired chemical interaction between the previously formed polymeric blend components.

REFERENCES:
patent: 4161470 (1979-07-01), Calundann
patent: 4184996 (1980-01-01), Calundann
patent: 4256624 (1981-03-01), Calundann

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