Polybenzimidazole material with low metallic concentration and a

Details Polybenzimidazole material with low metallic concentration and a Polybenzimidazole material with low metallic concentration and a

1997-01-14

1999-08-03

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528171, 528183, 528185, 528186, 528188, 528219, 528220, 528228, 528229, 528310, 528331, 5283393, 528341, 528342, 528352, C08G 6900, C08G 7318

Patent

active

059326883

ABSTRACT:
An improved polybenzimidazole wherein the total concentration of metals other than alkali metal and alkaline earth metals is 10 ppm or less. The resulting polybenzimidazole is industrially useable in parts or components of apparatus for the manufacture of semiconductors and display devices.

REFERENCES:
patent: 4020142 (1977-04-01), Davis et al.
patent: 4800188 (1989-01-01), Shepherd
patent: 4898917 (1990-02-01), Sansone

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