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:
Mar. 19, 2024
Filed:
Dec. 23, 2019
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventor:
Yusaku Kohinata, Tokyo, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/23 (2006.01); C08G 59/50 (2006.01); C08J 5/24 (2006.01); C08L 63/04 (2006.01);
U.S. Cl.
CPC ...
C08G 75/23 (2013.01); C08G 59/50 (2013.01); C08J 5/243 (2021.05); C08L 63/04 (2013.01);
Abstract
An aromatic polysulfone resin produced by the polycondensation of 4,4′-dihydroxydiphenylsulfone represented by chemical formula (S1) shown below and 2-(4-(4-hydroxyphenylsuIfonyl)phenoxy)-5-(4-hydroxyphenylsulfonyl)phenol represented by chemical formula (S2) shown below with 4,4′-dichlorodiphenylsulfone represented by chemical formula (S3) shown below. wherein hydrogen atoms in phenylene groups in formula (S1), formula (S2) and formula (S3) may be each independently substituted with an alkyl group, an aryl group or a halogen atom.