Process for the production of polyurethanes using cyclic N-hydro

Details Process for the production of polyurethanes using cyclic N-hydro Process for the production of polyurethanes using cyclic N-hydro

1981-04-03

1983-01-11

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521118, 528 49, C08G 1814

Patent

active

043682782

ABSTRACT:
A polyurethane is made by reacting a polyisocyanate with a compound having at least two isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 10,000 in the presence of a catalyst. The catalyst employed is a cyclic N-hydroxyalkyl-substituted compound containing an amidine group. Polyurethanes made in accordance with this process are useful as shoe soles, upholstery material, sound insulating materials, coating compositions, packaging materials and mattresses.

REFERENCES:
patent: 3050475 (1962-08-01), Muller et al.
patent: 3448065 (1969-06-01), Green
patent: 3674721 (1972-07-01), Aufdermarsh et al.
patent: 3806475 (1974-04-01), Narayan et al.
patent: 4049931 (1977-09-01), Sandner et al.
patent: 4115320 (1978-09-01), Meyborg
patent: 4150212 (1978-09-01), Meyborg
Catalysis in Isocyanate Reactions by Frisch & Rennao J. Macromol Chem. Soc. C 5 (1) 103-150-1970.

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