Polyester composition

Details Polyester composition Polyester composition

1979-05-09

1980-07-29

Nielsen, Earl A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

525 1, 525437, 525438, C08L 6702

Patent

active

042150329

ABSTRACT:
The present application provides a polyester composition composed of polyethylene terephthalate or a polyester containing at least 80 mol % of ethylene terephthalate repeating units and 0.1 to 15 weight %, based on the polyester, of an organic crystallization promoting agent having a polyoxyalkylene chain and at least one epoxy group. The latter promoting agents are represented by such materials as a glycidyl ether of a polyalkylene glycol having a molecular weight less than 5000. Such crystallization promoting agents serve to prevent streaks and pock marks on the surface of articles molded from such polyester compositions.

REFERENCES:
patent: 3560605 (1971-02-01), Siggel et al.
patent: 3886104 (1975-05-01), Borman et al.
patent: 4016142 (1977-04-01), Alexander et al.
patent: 4065438 (1977-12-01), Verborgt
patent: 4076767 (1978-02-01), Sam ejima
patent: 4147737 (1979-04-01), Sein et al.

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