Alkyl substituted difunctional cyclohexylisocyanates
AssigneeAir Products and Chemicals, Inc.
InventorsJeffrey R. Quay, Jeremiah P. Casey, Kenneth M. Kem
Life of this patent
Estimating the term…
Abstract
This invention pertains to alkyl substituted difunctional cyclohexylisocyanates having an isomer distribution. The isocyanates are represented by the formulas: ##STR1## wherein; R.sup.1 is C.sub.1-4 alkyl; R.sup.2 is C.sub.1-4 alkyl and n is 0 or 2. The invention also relates to polyurethane and polyurethane/urea resins prepared using the alkyl substituted difunctional cyclohexylisocyanates as at least a portion of the polyisocyanate used in forming the polyurethane.
Claims16
An isocyanate selected from the group consisting of bridged bi(cyclohexylisocyanates) and methylene bridged di(isocyanates) represented by the formulas:
- ##STR6## wherein;
- R.sup.1 is C.sub.1-4 alkyl;
- R.sup.2 is C.sub.1-4 alkyl and
- n is 0 or 2.
Dependencies are inferred from the claim text.