Vinyl ester resins containing mesogenic/rigid rodlike moieties
AssigneeThe Dow Chemical Company
InventorsRobert E. Hefner, Jr., Jimmy D. Earls, Paul M. Puckett
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Abstract
Thermosettable vinyl ester resin compositions are prepared from polyepoxide compounds, optionally, monoepoxide compounds, at least one of which contains a mesogenic or rigid rodlike moiety and a monounsaturated monocarboxylic acid. These vinyl ester resins can be mixed with polymerizable ethylenically unsaturated monomers which can, if desired, contain a mesogenic or rigid rodlike moiety.
Claims17
A thermosettable vinyl ester composition containing a rigid rodlike mesogenic moiety which results from reacting
- (A) one or more polyepoxide compounds other than the diglycidyl ether of 4,4'-dihydroxybiphenyl or the diglycidyl ether of 4,4'-dihydroxychalcone, at least one of which contains a rigid rodlike mesogenic moiety;
- with
- (B) one or more polymerizable monounsaturated monocarboxylic acids;
- wherein from about 1 to about 100 percent of the epoxide groups are derived from one or more polyepoxides containing a rigid rodlike mesogenic moiety and components (A) and (B) are employed in quantities which provide a ratio of carboxylic acid group per epoxide group of from about 0.9:1 to about 1.1:1.
A thermosettable vinyl ester composition containing a rigid rodlike mesogenic moiety which is prepared by reacting
- (A) a mixture of
- (1) one or more polyepoxide compounds;
- and
- (2) one or more monoepoxide compounds;
- wherein at least one of components (1) or (2) contains a rigid rodlike mesogenic moiety;
- with
- (B) one or more polymerizable monounsaturated monocarboxylic acids;
- and
- wherein from about 1 to about 100 percent of the molecules of the monoepoxide compound(s) contain a rigid rodlike mesogenic moiety and components (A) and (B) are employed in quantities which provide a ratio of carboxylic acid group per epoxide group of from about 0.9:1 to about 1.1:1.
Dependencies are inferred from the claim text.