Oxidatively stable modified polyphenylquinoxaline resin

Claim 2

AN OXIDATIVELY STABLE RESIN CONSISTING ESSENTIALLY OF THE CYLICIZED REACTION PRODUCT OF POLYPHENYLQUINOXALINE POLYMER AND POLYQUINOXALINE POLYMER CONTAINING 1-10%, BY WEIGHT, OF A DISPERSED FINELY DIVVIDED PARTICULATE FILLER SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA AND GRAPHITE, THE WEIGHT RATIO OF POLYPHENLQUINOXALINE POLYMER TO POLYQUINOXALINE POLYMER RANGING FROM APPROXIMATELY 1.9 TO 19.

Claim 3

The invention of claim 1 wherein said filler has a surface area of approximately 100-350 m2/gm (BET) and a particle size of 2-20 m Mu .

Claim 4

The invention of claim 1 wherein said filler is 3-7%, by weight, fume silica and the weight ratio of polyphenylquinoxaline polymer to polyquinoxaline polymer ranges from approximately 4 to 9.

Claim 5

The invention of claim 3 wherein a plurality of high strength filaments are embedded in said resin.

Claim 6

The invention of claim 4 wherein said silica has a surface area of approximately 225-250 m2/gm (BET) and a particle size of 7-12 m Mu .

Claim 7

A polymer suitable for conversion to an oXidatively stable resin consisting essentially of the reaction product of (a) at least one aromatic bis o-diamine selected from the group consisting of 2,3,7,8-tetra aminophenazine, 3,3''-diaminobenzidine, 3,3'',4,4''-tetra aminobenzophenone, 3,3'',4,4''-tetra aminodiphenylsulfone, 3,3'',4,4''-tetra aminodiphenylmethane, 3,3'',4,4''-tetra aminodiphenyl ether, 2,3,5,6-tetra aminobenzene and 2,3,7,8-tetra aminobenzofuran, (b) at least one aromatic bis glyoxal selected from the group consisting of p,p''-oxybis phenyleneglyoxal, p,p''-phenylene diglyoxal, p,p''-diphenyletherdiglyoxal, p,p''-diphenylsulfidediglyoxal and p,p''-diphenylsulfonediglyoxal, (c) at least one bis phenyl- Alpha -dicarbonyl selected from the group consisting of 1,4-bisphenylglyoxalyl benzene, 1,3-bisphenylglyoxalyl benzene, 4,4''-oxydibenzil, 4,4''-dibenzilsulfide and 4,4''-dibenzilsulfone and (d) 1-10%, by weight, of a dispersed, finely divided filler selected from the group consisting of silica, alumina and graphite, the amount of aromatic bis o-diamine being essentially equimolar with respect to the total amount of aromatic bis glyoxal and bis phenyl- Alpha -dicarbonyl.

Claim 8

A polymer suitable for conversion to an oXidatively stable resin consisting essentially of the reaction product of (a) at least one aromatic bis o-diamine selected from the group consisting of 2,3,7,8-tetra aminophenazine, 3,3''-diaminobenzidine, 3,3'',4,4''-tetra aminobenzophenone, 3,3'',4,4''-tetra aminodiphenylsulfone, 3,3'',4,4''-tetra aminodiphenylmethane, 3,3'',4,4''-tetra aminodiphenyl ether, 2,3,5,6-tetra aminobenzene and 2,3,7,8-tetra aminobenzofuran, (b) at least one aromatic bis glyoxal selected from the group consisting of p,p''-oxybis phenyleneglyoxal, p,p''-phenylene diglyoxal, p,p''-diphenyletherdiglyoxal, p,p''-diphenylsulfidediglyoxal and p,p''-diphenylsulfonediglyoxal, (c) at least one bis phenyl- Alpha -dicarbonyl selected from the group consisting of 1,4-bisphenylglyoxalyl benzene, 1,3-bisphenylglyoxalyl benzene, 4,4''-oxydibenzil, 4,4''-dibenzilsulfide and 4,4''-dibenzilsulfone and (d) 1-10%, by weight, of a dispersed, finely divided filler selected from the group consisting of silica, alumina and graphite, the amount of aromatic bis o-diamine being essentially equimolar with respect to the total amount of aromatic bis glyoxal and bis phenyl- Alpha -dicarbonyl.

Claim 9

The invention of claim 6 wherein said filler has a surface area of approximately 100-350 m2/gm (BET) and a particle size of 2-20 m Mu .

Claim 10

The invention of claim 6 wherein said reaction product contains 3-7%, by weight, fume silica.

Claim 11

The invention of claim 8 wherein a plurality of high strength filaments are embedded in said polymer.

Claim 12

The invention of claim 9 wherein said silica has a surface area of approximately 225-250 m2/gm (BET) and a particle size of 7-12 m Mu .