Phenolic foam modified with phosphorus-containing isocyanate-ter

Details Phenolic foam modified with phosphorus-containing isocyanate-ter Phenolic foam modified with phosphorus-containing isocyanate-ter

1977-03-25

1978-10-10

Cockeram, H.S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 18TN, 521132, 521136, 521159, C08G 1824, C08G 1850

Patent

active

041195841

ABSTRACT:
This invention provides a low density (<2 pcf.) modified phenolic foam produced by combining a resole resin with a phosphorus-containing isocyanate-terminated prepolymer in the presence of a minor amount of a surfactant, a catalytic amount of an organotin catalyst, and a halocarbon blowing agent. Foam products producted by the method of the invention have a good combination of low combustibility, friability resistance and compressive strength.

REFERENCES:
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patent: 3063964 (1962-11-01), Khawam
patent: 3099676 (1963-07-01), Lanham
patent: 3144419 (1964-08-01), Guttag
patent: 3271331 (1966-09-01), Ender
patent: 3298973 (1967-01-01), Quarles et al.
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patent: 3439067 (1969-04-01), Austin et al.
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patent: 3682845 (1972-08-01), Longley et al.
patent: 3732187 (1973-05-01), Cenker et al.
patent: 3770671 (1973-11-01), McFarling
patent: 3872034 (1975-03-01), Dickert
patent: 4013701 (1977-03-01), Jabs et al.

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