High-resilience polyurethane foams having improved resistance to

Details High-resilience polyurethane foams having improved resistance to High-resilience polyurethane foams having improved resistance to

1982-12-17

1984-03-13

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521904, 521914, C08G 1814

Patent

active

044368437

ABSTRACT:
High-resilience polyurethane foams made from polyols which are alkylene oxide adducts of alkylenediamines have been found to have surprisingly improved resistance to shrinkage. These foams have particular utility as seating support because they can be molded with good processing characteristics yet contain open cells and resist shrinkage. It is preferred that the polyols used be based on ethylenediamine.

REFERENCES:
patent: 3112281 (1963-11-01), Gromacki et al.
patent: 3535307 (1970-10-01), Moss et al.
patent: 4111865 (1978-09-01), Seefried et al.
patent: 4284728 (1981-08-01), Demou et al.
Buist (Ed.), Developments in Polyurethane, Allied, London, 1978, pp. 124 and 125.

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