Thermally stable and high impact resistant structural polyuretha

Details Thermally stable and high impact resistant structural polyuretha Thermally stable and high impact resistant structural polyuretha

1986-04-23

1987-09-29

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521163, 521164, C08G 1800, C08G 1814

Patent

active

046969543

ABSTRACT:
Molded cellular polymers are disclosed which are derived from the reaction of organic polyisocyanates with novel active hydrogen compositions comprising (A) a polyester polyol mixture derived from (i) an aromatic polycarboxylic compound containing two or more carboxylic groups; and (ii) an excess of at least one polyol having from 2 to 8 hydroxyl groups and an equivalent weight of from about 30 to about 250; and (B) from about 5 to about 30 percent by weight of a primary or secondary amine terminated polyether of greater than 1500 molecular weight and amine functionality of from about 2 to about 8.
The molded products are characterized by a combination of excellent impact strength and resistance to high temperatures as well as good resistance to burning.

REFERENCES:
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patent: 3836424 (1974-09-01), Reymore et al.
patent: 4247677 (1981-01-01), Schmidt et al.
patent: 4263408 (1981-04-01), Meyborg et al.
patent: 4292411 (1981-09-01), Jourquin et al.
patent: 4474901 (1984-10-01), Dominguez
patent: 4495081 (1985-01-01), Vanderhider et al.
patent: 4530941 (1985-07-01), Turner et al.

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