Fireproof laminates

Details Fireproof laminates Fireproof laminates

1980-03-06

1981-10-20

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4284228, 428920, 428921, B32B 520

Patent

active

042961700

ABSTRACT:
A fireproof laminate passing Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test is disclosed. The laminate comprises a urethane modified polyisocyanurate foam as a core material and an aluminum foil with a thickness of not less than 0.015 mm as a front surface material piled on the foam through self-adhesion of the foam. When the foam is produced by reacting an organic polyisocyanate with polyols as a modifier in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, a combination of particular low molecular weight diols with particular high molecular weight polyols is used as the polyol in a special weight ratio and a special total amount per 100 parts by weight of the organic polyisocyanate.

REFERENCES:
patent: 2226589 (1940-12-01), Smyers
patent: 2728702 (1955-12-01), Simon et al.
patent: 3814659 (1974-06-01), Nadeau
patent: 3940517 (1976-02-01), De Leon
patent: 4118533 (1978-10-01), Hipchen
patent: 4121958 (1978-10-01), Koonts
patent: 4131518 (1978-12-01), Fromson
patent: 4148980 (1979-04-01), Narayan
patent: 4165414 (1979-08-01), Narayan et al.
patent: 4166164 (1979-08-01), Cenker et al.
patent: 4205136 (1980-05-01), Ohashi et al.
UK Patent Application, GB 2,007,590 A, published May 23, 1979.

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