Aliphatic-cycloaliphatic diisocyanates

Details Aliphatic-cycloaliphatic diisocyanates Aliphatic-cycloaliphatic diisocyanates

1985-01-14

1986-09-23

Torrence, Dolph H

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

Organic compounds

Isocyanate esters

C07C119045

Patent

active

046136851

ABSTRACT:
The present invention relates to diisocyanates having an isocyanate content of from about 20 to 50% by weight, optionally in the form of isomeric mixtures, characterized in that, in addition to containing a sterically unhindered isocyanate group attached to a primary aliphatic carbon atom, they contain a sterically hindered isocyanate group attached to a tertiary carbon atom which forms part of a cycloaliphatic ring system.
The invention also relates to the use of the new diisocyanates, optionally blocked with blocking agents for isocyanate groups, as isocyanate component for the preparation of polyurethanes.

REFERENCES:
patent: 2692275 (1954-10-01), Bortnick
patent: 3352830 (1967-11-01), Schmitt et al.
patent: 3799965 (1974-03-01), MacKay et al.
patent: 3904665 (1975-09-01), Decor et al.
patent: 4505860 (1985-03-01), Klein et al.

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