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US 4,600,760 AGranted
Thermosettable resin composition containing alkenyl phenyl cyanate
AssigneeThe Dow Chemical Company
InventorRobert E. Hefner, Jr.
Life of this patent
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Abstract
Thermosettable compositions comprising an alkenyl phenyl cyanate and at least one of an aromatic polycyanate, a polymaleimide or a polymerizable ethylenically unsaturated aromatic monomer are disclosed.
Claims16
A thermosettable composition which comprises
- (A) at least one alkenyl phenyl cyanate containing at least 10 percent by weight of monomeric material represented by formula I ##STR25## wherein each R, R.sup.1 and R.sup.2 is independently hydrogen or a hydrocarbyl group having from 1 to about 3 carbon atoms;
- each X is independently hydrogen, a hydrocarbyl group or a hydrocarbyloxy having from 1 to about 10 carbon atoms, chlorine or bromine;
- each Y is independently hydrogen or a hydrocarbyl group having from 1 to about 10 carbon atoms;
- Y.sup.1 is a ##STR26## group and x and y are positive integers and the sum of x plus y has a value of 4;
- and
- (B) at least one of
- (1) at least one aromatic polycyanate,
- (2) at least one polymaleimide, or
- (3) at least one polymerizable ethylenically unsaturated aromatic compound;
- wherein component A comprises from about 1 to about 99 percent by weight of the combined weight of components A and B;
- with the proviso that component (B-3) is not used alone with component (A).
8 more elements
Dependencies are inferred from the claim text.