Claims
- 1. A polyurethane elastomer product of an NCO terminated elastomer prepolymer formed from a polyol selected from the class consisting of dihydroxy functional polyethers and polyesters cured with a mixture of polyhydroxyalkyl phosphine oxides of the formula: ##STR8## wherein R is alkylene of 3 to 6 carbon atoms, R.sub.1 is alkyl of 2 to 10 carbon atoms, cycloalkyl of 6 to 12 carbon atoms and n is an integer of 2 to 3, it being provided that the said mixture contains a minor amount of the phosphine oxide wherein n is 3 and a major amount of the phosphine oxide wherein n is 2.
- 2. The elastomer product of claim 1 wherein the NCO terminated prepolymer is formed by reacting the polyol with toluene diisocyanate.
- 3. The elastomer product of claim 1 wherein the NCO terminated prepolymer is formed by reacting the polyol with 4,4'-diphenylmethanediisocyanate.
- 4. The elastomer product of claim 1 wherein the curative is a mixture of a major amount of: ##STR9## and a minor amount of: ##STR10##
- 5. The elastomer of claim 1 wherein the curative is the compound: ##STR11##
Parent Case Info
This is a continuation-in-part of application Ser. No. 476,163, filed Mar. 17, 1983.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
476163 |
Mar 1983 |
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