Process for the preparation of polyurethanes containing uretdion

Details Process for the preparation of polyurethanes containing uretdion Process for the preparation of polyurethanes containing uretdion

1988-08-26

1990-01-16

Kight, John

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 55, C08G 1800

Patent

active

048944297

ABSTRACT:
Polyurethanes containing uretdione rings are produced by reacting a polyisocyanate containing a uretdione ring with a relatively high molecular weight dihydroxyl compound in the presence of a bismuth salt of an organic carboxylic acid and a low molecular weight aromatic diamine. The low molecular weight aromatic diamine is used in a quantity which is 5 to 10 times the quantity of bismuth salt used. These solid polyurethanes are formed in relatively short reaction times and possess outstanding mechanical properties.

REFERENCES:
patent: 3248370 (1966-04-01), Reischl et al.
patent: 3794621 (1974-02-01), Meckel et al.
patent: 3903052 (1975-09-01), Wagner et al.
patent: 3998794 (1976-12-01), Muller et al.
patent: 4284751 (1981-08-01), Hutt et al.
patent: 4292411 (1981-09-01), Jourquin et al.
patent: 4442280 (1984-04-01), Grogler et al.
patent: 4483974 (1984-11-01), Grogler et al.
patent: 4520186 (1985-05-01), Hess et al.
patent: 4546165 (1985-10-01), Grogler et al.
patent: 4584362 (1986-04-01), Leckart et al.
patent: 4667008 (1987-05-01), Grogler et al.
patent: 4742090 (1988-05-01), Hunter et al.
Hofmann Berichte 3 (1870), 765-766 (not translated).

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