Polyurethane derived from both an aliphatic dicarboxylic acid an

Details Polyurethane derived from both an aliphatic dicarboxylic acid an Polyurethane derived from both an aliphatic dicarboxylic acid an

1979-08-17

1981-01-27

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C08G 1842

Patent

active

042476780

ABSTRACT:
A polyester urethane fuel cell having at least one layer of a reaction product of an organic polyisocyanate and a mixed polyester and a curative. In the preferred embodiment the fuel cell has a barrier layer composed of a polyester urethane formed from reacting bis(4-cyclohexyl isocyanate) with 10 to 90 mol percent of polyhexamethylene ortho phthalate and 90 to 10 mol percent of a polycaprolactane and curative. The mixed polyesters are either a blend or co-condensation product of a monomeric polyol of less than 5 carbon atoms with an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid.

REFERENCES:
patent: 2880192 (1959-03-01), Coffey et al.
patent: 3738860 (1973-06-01), Von Roda et al.
patent: 3804810 (1974-04-01), Fryd
patent: 3929732 (1975-12-01), Shah
patent: 3951919 (1976-04-01), Pinfold et al.
patent: 3998871 (1976-12-01), Carlson
patent: 4102868 (1978-06-01), Genetti et al.
patent: 4158649 (1979-06-01), Angres et al.

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