Polyol(allyl carbonate) composition

Details Polyol(allyl carbonate) composition Polyol(allyl carbonate) composition

1989-05-04

1992-01-28

Carrillo, Ana L.

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

Synthetic resins

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

525920, C08L 7504

Patent

active

050845292

ABSTRACT:
Polyol(allyl carbonate) compositions and polymerizates thereof that have an enhanced resistance to yellowing on exposure to external heating are described. In particular, a polyol(allyl carbonate) composition comprising (a) from about 55 to about 90 weight percent of a polyol(allyl carbonate), e.g., diethylene glycol bis(allyl carbonate), from about 10 to about 40 weight percent of aliphatic polyurethan having terminal ethylenic unsaturation, e.g., an aliphatic polyesterurethan diacrylate, and from about 0 to about 5 weight percent of a difunctional monomer selected from the group consisting of allyl methacrylate and allyl acrylate and (b) from about 0.01 to about 0.5 weight percent of a dialkyl pyrocarbonate, e.g., diethyl pyrocarbonate, based on the weight of the polymerizable reactants is described. Polymerizates of such polyol(allyl carbonate) compositions have an enhanced resistance to yellowing when heated at elevated temperatures, e.g., 130.degree. C.

REFERENCES:
patent: 4054162 (1987-10-01), Kriog et al.
patent: 4360653 (1982-11-01), Stevens et al.
patent: 4565648 (1986-01-01), Kopp et al.

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