Cycloaliphatic diisocyanates, optionally in the form of isomeric

Details Cycloaliphatic diisocyanates, optionally in the form of isomeric Cycloaliphatic diisocyanates, optionally in the form of isomeric

1987-04-07

1989-11-07

Siegel, Alan

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

Organic compounds

Isocyanate esters

C07C 6900

Patent

active

048794090

ABSTRACT:
A diisocyanate corresponding to the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, m and n are as defined herein is prepared by phosgenating a diamine corresponding to the formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, m and n are as defined herein. The diisocyanate may contain C.sub.1 -C.sub.12 -monoalkyl-substituted methylene-bis-(cyclohexylisocyanate)isomers in an amount of up to 40 wt. %. These new diisocyanates which are liquid at room temperature and compatible with polyols are particularly useful in the production of polyurethanes.

REFERENCES:
patent: 3361814 (1968-01-01), Campbell
patent: 3565768 (1971-02-01), Grant
patent: 3870683 (1975-03-01), Freure

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