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...
Patent
1984-02-27
1985-11-26
Cockeram, Herbert S.
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...
521108, 521168, 528 60, 528127, C08G 1838
Patent
active
045555621
ABSTRACT:
A polyurethane elastomer product formed by curing a mixture of an NCO terminated urethane prepolymer and a polyhydroxyalkylphosphine oxide. The polyhydroxyalkyl phosphine curative is a compound of the class having the formula: ##STR1## 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. Exemplary polyhydroxyalkyl phosphine curatives are (HOCH.sub.2 CH.sub.2 CH.sub.2).sub.2 P(O)--C.sub.4 H.sub.9 --sec. and (HOCH.sub.2 CH.sub.2 CH.sub.2).sub.3 P(O).
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Green Joseph
Lee Fui-Tseng H.
Cockeram Herbert S.
FMC Corporation
Horsky Eugene G.
Jackson Robert D.
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