Pressurized, blowing agent-containing isocyanate semiprepolymer

Details Pressurized, blowing agent-containing isocyanate semiprepolymer Pressurized, blowing agent-containing isocyanate semiprepolymer

1995-11-06

1998-11-10

Cooney, Jr., John M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 841, 5211091, 521174, 521175, C08G 1804

Patent

active

058345299

ABSTRACT:
Pressurized, blowing agent-containing isocyanate semiprepolymer mixtures advantageously having an isocyanate content of from 5 to 25% and based on organic polyisocyanates and alkoxylated lignin having a hydroxyl number of from 30 to 80, preferably in admixture with lignin-free polyhydroxyl compounds are used for producing single-component polyurethane foams.

REFERENCES:
patent: 3546199 (1970-12-01), Christian et al.
patent: 3654194 (1972-04-01), Christian et al.
patent: 4258140 (1981-03-01), Horacek et al.
patent: 4263412 (1981-04-01), Pauls
patent: 4489176 (1984-12-01), Kluth et al.
European Search Report Dated Mar. 27, 1996; Translation of EPO Search Report.

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