Blocked isocyanate diols and preparation thereof

Details Blocked isocyanate diols and preparation thereof Blocked isocyanate diols and preparation thereof

1978-12-15

1981-08-18

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26032645, 260453R, 528 45, 528 65, 548361, 560 27, 560 28, 560 29, 560125, 560144, 560145, 560159, 564 50, 564 51, 564 59, C07D30716, C07C12719, C07C 6978

Patent

active

042845726

ABSTRACT:
Copolymerizable blocked isocyanate diols are prepared by reacting a blocking agent with an isocyanate group of an organic diisocyanate under controlled conditions, thereby forming a blocked isocyanate group, and reacting the second isocyanate group in a subsequent step with the amine portion of a selected amine diol under anhydrous conditions. The resultant products are used to prepare self-crosslinkable, linear polyurethanes of high molecular weight.

REFERENCES:
patent: 2568885 (1951-09-01), Dreyfus
patent: 2988538 (1961-06-01), Thoma et al.
patent: 3173896 (1965-03-01), Adams et al.
patent: 3682867 (1972-08-01), Shackelford et al.
patent: 3833525 (1974-09-01), Orlando et al.
patent: 4153775 (1979-05-01), Winkelmann et al.
patent: 4211699 (1980-07-01), Winkelmann et al.
Kawaguchi et al., CA 84: 32694e (1976).

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