Methods for making blocked isocyanurates

Details Methods for making blocked isocyanurates Methods for making blocked isocyanurates

1985-08-13

1986-08-19

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25134

Patent

active

046071032

ABSTRACT:
There is provided a method for making blocked isocyanate trimers comprising (A) blocking at least one organic diisocyanate with at least one blocking compound, such as a monohydroxy compound and thereafter (B) heating the reaction product of step (A) in the presence of a catalyst having the general formula ##STR1## where each R is independently selected from hydrogen and lower alkyl radicals and R.sup.1 is an alkylene radical having up to about six carbon atoms; for an amount of time effective for forming blocked isocyanate trimers.

REFERENCES:
patent: 2952665 (1960-09-01), Bunge et al.
patent: 4246132 (1981-01-01), Gras et al.
patent: 4255569 (1981-03-01), Muller et al.
patent: 4306051 (1981-12-01), Gras et al.

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