Process for reacting isocyanates in the presence of quaternary a

Details Process for reacting isocyanates in the presence of quaternary a Process for reacting isocyanates in the presence of quaternary a

1981-04-06

1982-06-15

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

528 52, 544193, 560 24, 560 25, 560 26, 560 27, 560115, 560157, 560158, 564 47, C08G 1818

Patent

active

043352197

ABSTRACT:
The reaction of an isocyanate such as toluene diisocyanate with itself to form an isocyanurate or with an active hydrogen compound such as diethylene glycol to form a urethane is catalyzed by the presence of an ar-ammonium areneoxide such as 4-dodecyl-2-trimethylammonium phenoxide.

REFERENCES:
patent: 3487080 (1969-12-01), Matsui et al.
patent: 3809646 (1974-05-01), Spence
patent: 3892687 (1975-07-01), Bechara et al.
patent: 4111914 (1978-09-01), Kresta et al.

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