Endcapped polyesters

Details Endcapped polyesters Endcapped polyesters

1979-02-01

1980-04-29

Phynes, Lucille M.

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

Synthetic resins

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

528288, 528289, C08G 6320

Patent

active

042007313

ABSTRACT:
The polyesters are endcapped by reacting them generally with substituted benzoyl-lactams or substituted benzoyl-phthalimides at a temperature usually above the melting point of the polyester to form a benzoyl end group. Such endcapped polymers have improved properties such as thermal-oxidative aging, molecular weight retention, tensile strength retention, and improved stability.

REFERENCES:
patent: 3769366 (1973-10-01), Fessler et al.
patent: 3959215 (1976-05-01), Schneider
patent: 3968015 (1976-07-01), Nyberg
patent: 4022752 (1977-05-01), Horn et al.
patent: 4081428 (1978-03-01), Thompson

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