Polymers derived from poly(arylcyclobutenes)
AssigneeThe Dow Chemical Company
InventorRobert A. Kirchhoff
Life of this patent
Estimating the term…
Abstract
The invention is a polymeric composition which comprises the reaction product prepared by exposing one or more poly(arylcyclobutenes) which comprise aryl moieties with one or more cyclobutene rings fused to each aryl moiety, wherein the aryl moieties are directly bonded to one another or are connected by a bridging member wherein the bridging member is (1) a polyvalent inorganic radical or (2) a polyvalent organic radical, to temperatures at which the poly(arylcyclobutenes) undergo polymerization.
Claims32
A polymeric composition which comprises the reaction product prepared by exposing one or more poly(arylcyclobutenes) which comprise two or more aryl moieties with one or more cyclobutane rings fused to each aryl moiety, wherein the aryl moieties are directly bonded to one another or are connected by a bridging member wherein the bridging member is (1) a polyvalent inorganic radical or (2) a polyvalent organic radical, to temperatures at which the poly(arylcyclobutenes) undergo polymerization.
A polymeric composition which comprises the reaction product prepared by exposing one or more compounds which correspond to the formula ##STR39## wherein B is a direct bond between the aryl moieties or bridging member which comprises (1) a polyvalent inorganic radical, or (2) a polyvalent organic radical;
- R is separately in each occurrence hydrogen, an electron-withdrawing substituent or an electron-donating substituent;
- Ar is an aromatic radical which may be substituted with an electron-withdrawing substituent;
- m is an integer of 1 or greater;
- and
- n is an integer of 2 or greater,
- with the proviso that B can be a direct bond only when n is equal to 2;
- to temperatures at which the compound undergoes polymerization.
A polymeric composition which comprises units of the formulas ##STR47## wherein B is a direct bond or bridging member which comprises (1) a polyvalent inorganic radical, or (2) a polyvalent organic radical;
- Ar is an aromatic radical which may be substituted;
- R is separately in each occurrence hydrogen or an electron-withdrawing or electron-donating substituent;
- m is an integer of 1 or more;
- and
- n is an integer of 2 or more,
- with the proviso that B can only be a direct bond wherein n is 2.
Dependencies are inferred from the claim text.