N-Substituted arylcyclo butenyl-maleimides
AssigneeThe Dow Chemical Company
InventorRobert A. Kirchhoff
Life of this patent
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Abstract
The invention is a compound which comprises an unsaturated cyclic imide moiety and an aryl cyclobutene moiety, wherein the cyclobutene moiety is fused to the aryl radical, and wherein the imide nitrogen is connected to the aryl radical by a direct bond or a bridging member. Another aspect of this invention is a polyimide polymeric composition which results from the polymerization of the above-described compounds.
Claims13
A compound which corresponds to the formula ##STR49## wherein R.sup.1 is separately in each occurrence a hydrocarbyl, hydrocarbylthio, hydrocarbyloxy, electron-withdrawing or electron-donating group;
- R.sup.2 is separately in each occurrence hydrogen, cyano, halo or an electron donating group;
- R.sup.3 is separately in each occurrence hydrogen, hydrocarbyl, hydrocarbyloxy or hydrocarbylthio;
- Y is a direct bond or a divalent organic radical;
- and
- b is an integer of from 0 to 3, inclusive;
- with the proviso that at least two of R.sup.2 are hydrogen and the further proviso that the moieties R.sup.1, R.sup.2 and R.sup.3 do not interfere with polymerization of the compound.
A compound which corresponds to the formula ##STR50## wherein Ar is a carbocyclic aromatic radical;
- R.sup.1 is separately in each occurrence a hydrocarbyl, hydrocarbyloxy, hydrocarbylthio, an electron-donating or electron-withdrawing group;
- R.sup.2 is separately in each occurrence hydrogen, cyano, halo, or electron-donating group;
- R.sup.3 is separately in each occurrence hydrogen, a hydrocarbyl, hydrocarbyloxy or hydrocarbylthio group;
- Y is a direct bond or a divalent organic radical;
- and
- a is an integer of from 0 to 3;
- with the proviso that the two carbon atoms of the (C(R.sup.2).sub.2).sub.2 moiety which are bound to Ar are bound to adjacent carbon atoms on the same aromatic ring of Ar;
- with the further proviso that at least two of R.sup.2 are hydrogen;
- and the further proviso that the moieties R.sup.1, R.sup.2 and R.sup.3 do not interfere with polymerization of the compound.
A monomer which corresponds to the formula ##STR51## wherein R.sup.1 is separately in each occurrence an electron-withdrawing or electron-donating group;
- R.sup.2 is separately in each occurrence hydrogen, a cyano, an alkoxy, a halo, or an alkyl group;
- R.sup.3 is separately in each occurence hydrogen, hydrocarbyl, hydrocarbyloxy or hydrocarbylthio;
- Y is a direct bond;
- and
- b is an integer of from 0 to 3, inclusive with the proviso that at least two of R.sup.2 are hydrogen with the further proviso that R.sup.1, R.sup.2 and R.sup.3 do not interfere with polymerization of the monomer.
Dependencies are inferred from the claim text.