The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1976
Filed:
Dec. 09, 1974
Applicant:
Inventors:
Hideaki Suzuki, Machida, JA;
Haruo Togawa, Koganei, JA;
Akira Omori, Sagamihara, JA;
Naoki Yamamoto, Hino, JA;
Assignee:
Teijin Limited, Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 81155 ; 260 / ; 260 / ;
Abstract
A solvent-resistant filamentary structure having superior ion-exchangeability which comprises at least 20% by weight of aromatic nuclear structural units derived from an aromatic monovinyl monomer, 2 to 40 out of 100 of said aromatic nuclear structural units being cross-linked by crosslinkages of the formula ##EQU1## said filamentary structure not containing a crosslinkage expressed by the formula ##EQU2## and the remainder of said aromatic nuclear structural units, either partly or wholly, having incorporated therein an ion-exchangeable group, and a method for producing the same.