Composite articles

Details Composite articles Composite articles

1988-06-03

1989-09-19

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283193, 4283197, 4284242, 4284246, 521125, B32B 326

Patent

active

048680435

ABSTRACT:
A composite article comprising a body of semi-rigid polyurethane foam in contact with a layer of sheet of polymeric material, the foam having been prepared by reacting an organic polyisocyanate with a polymeric polyol having a hydroxyl number in the range from 20 to 80 and a crosslinking agent or chain extender having a hydroxyl number of at least 250 in the presence of water and a catalytically effective amount of an alkali metal or alkaline earth metal salt of an acid of the formula:

REFERENCES:
patent: 3047540 (1962-07-01), Merten
patent: 3817939 (1974-06-01), Allen et al.
patent: 4136240 (1979-01-01), Zimmerman et al.
patent: 4235811 (1980-11-01), Schulze et al.
patent: 4336341 (1982-06-01), Fujiwara et al.
patent: 4588754 (1986-05-01), Liu
patent: 4686240 (1987-08-01), Bailey, Jr. et al.
patent: 4760099 (1988-07-01), Canaday et al.

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