Reinforced cellular or noncellular polyurethane molded parts

Details Reinforced cellular or noncellular polyurethane molded parts Reinforced cellular or noncellular polyurethane molded parts

1984-11-23

1986-06-24

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 76, 521 99, 521103, 521120, 521123, 521137, 521160, 521162, 524871, 524872, 528 44, 528 45, 528 48, 528 52, 528 53, 528 54, 528 55, 528 57, 528 67, C08G 1877, C08G 1814

Patent

active

045968357

ABSTRACT:
Reinforced cellular or noncellular molded polyurethane parts are prepared by heating a mixture of reinforcing materials and a heat-curable composition of polyisocyanates and polyols in an open or closed mold, said composition being storage-stable at room temperature and containing, optionally, auxiliaries and additives. In said composition, the polyisocyanate is dispersed in the form of discreet particles having particle diameters from 0.1 to 150 .mu.m in the polyol and the polyisocyanate particles are deactivated on their surfaces such that from 0.01 to 20 equivalent percent of the total available isocyanate groups are deactivated and such that the ratio of free isocyanate groups to hydroxyl groups is from 0.7:1 to 2.5:1.
The polyurethane molded parts are suitable for use as self-supporting trim parts, reinforcement parts, or molded parts for various applications.

REFERENCES:
patent: 4005035 (1977-01-01), Deaver
patent: 4251401 (1981-02-01), Reischl
patent: 4288563 (1981-09-01), Thorpe
patent: 4298556 (1981-11-01), Rutsch et al.
patent: 4327194 (1982-04-01), Chandalia et al.
patent: 4381352 (1983-04-01), McBrayer
patent: 4400497 (1983-08-01), Blum et al.
patent: 4459399 (1984-07-01), Ihrman et al.

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