Pressurized, blowing-agent-containing isocyanate semiprepolymer

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

1995-11-29

1997-05-20

Niland, Patrick

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

521 87, 521 88, 521137, 521155, 521159, 521158, 521170, 521172, 521173, 521174, 521914, C08J 900, C08K 320, C08L 7500, C08G 1800

Patent

active

056313195

ABSTRACT:
The invention relates to pressurized, blowing-agent-containing isocyanate semiprepolymer mixtures, advantageously having an isocyanate content of from 5 to 25% by weight, based on organic polyisocyanates and polyhydroxyl compounds which are used in combination with a linear, branched or cyclic, saturated or olefinically unsaturated monoalcohol having 1 to 25 carbon atoms and/or hydroxyketones, preferably .beta.-hydroxyketones, the use thereof for the production of one-component polyurethane foams by allowing the isocyanate semiprepolymer mixtures to depressurize, and a process therefor.

REFERENCES:
patent: Re33748 (1991-11-01), Meyborg et al.
patent: 4263412 (1981-04-01), Pauls
patent: 5162387 (1992-11-01), Abel et al.

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