Process for the preparation of carbodiimide-isocyanurate foams e

Details Process for the preparation of carbodiimide-isocyanurate foams e Process for the preparation of carbodiimide-isocyanurate foams e

1977-09-16

1979-04-24

Welsh, M. J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521901, 521902, C08G 1814

Patent

active

041513347

ABSTRACT:
Rigid foams characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of certain quaternary boron salts.

REFERENCES:
patent: 3635848 (1972-01-01), Rambosek
patent: 3697485 (1972-10-01), Rambosek
patent: 3853818 (1974-12-01), Bechara
patent: 3880782 (1975-04-01), Rambosek

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