Polyester plasticizer

Details Polyester plasticizer Polyester plasticizer

1984-04-25

1985-03-12

Welsh, Maurice J.

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

Synthetic resins

Treating polymer containing material or treating a solid...

525437, 525438, 525440, 5263443, 528274, 528288, 528297, 528486, 528492, 528493, 560 2, C08G 6370

Patent

active

045046522

ABSTRACT:
Disclosed is a method for reducing the odor and/or improving the performance of polyester plasticizers of the type made from a dibasic acid, a polyol, and a chain terminator wherein a molar excess of alcohol ingredients is used. Such improved polyester plasticizer is made by subjecting the polyester plasticizer to a second stage reaction with a treating agent reactive with hydroxyl groups to reduce the hydroxyl value to no more than about 4. Preferably, the low acid number of the initial polyester plasticizer is maintained. The treating agent can be monofunctional or poly-functional, though preferably a difunctional isocyanate is used. Conventional thermoplastic substrates, typified by polyvinyl chloride, can be plasticized with the novel polyester plasticizers of the present invention.

REFERENCES:
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patent: 3390170 (1968-06-01), Sears
patent: 3954716 (1976-05-01), Muller et al.
patent: 4016142 (1977-04-01), Alexander et al.
patent: 4264751 (1981-04-01), Scheibelhoffer
patent: 4316832 (1982-02-01), Walkden
Chem. Abstr., vol. 70, 96174d (1969).
Chem. Abstr., vol. 69, 36764r (1968).
Chem. Abstr., vol. 77, 6358j (1972).

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