Diisocyanates and their use for the preparation of polyurethanes

Details Diisocyanates and their use for the preparation of polyurethanes Diisocyanates and their use for the preparation of polyurethanes

1986-06-27

1989-05-30

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 45, 528 85, C08G 1800, C08G 1881

Patent

active

048352390

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 suitable for use as coatings.

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), Decot et al.
patent: 4505860 (1985-03-01), Klein et al.
Mark, J. E. and Odian, G., Polymer Chemistry, ACS Short Courses, by American Chemical Society, pp. 104-107.

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