Thermoplastic polyester low profile additives for vinyl ester re

Details Thermoplastic polyester low profile additives for vinyl ester re Thermoplastic polyester low profile additives for vinyl ester re

1990-12-11

1992-05-26

Bleutge, John C.

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

Synthetic resins

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

525438, 525445, 525 48, C08G 5917

Patent

active

051169177

ABSTRACT:
The present invention is directed to a thermosettable vinul ester resinous composition and low profile additive. The improvement comprises the low profile additive comprising a non-gelling, saturated polyester formed from dibasic acid and an ethylene oxide/propylene oxide polyether polyol having an EO/PO molar ratio ranging from about 0.1 to 0.9. The polyester has an acid value of greater than about 10 and preferably has a molecular weight of greater than about 6,000. The EO/PO polyether polyol can be built on a combination of diol, triol or other compound with active hydrogen groups, so long as the LPA product does not gel.

REFERENCES:
patent: 3994853 (1976-11-01), Hindersinn et al.
patent: 4172059 (1979-10-01), Atkins et al.
patent: 4251641 (1981-02-01), Arakawa et al.
patent: 4626570 (1986-12-01), Gardner

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