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:
Jun. 24, 2014
Filed:
Jun. 02, 2010
Martin Weber, Maikammer, DE;
Christian Schmidt, Ludwigshafen, DE;
Alexander Khvorost, Moskau, RU;
Cecile Gibon, Mannheim, DE;
Christian Maletzko, Altrip, DE;
Martin Weber, Maikammer, DE;
Christian Schmidt, Ludwigshafen, DE;
Alexander Khvorost, Moskau, RU;
Cecile Gibon, Mannheim, DE;
Christian Maletzko, Altrip, DE;
BASF SE, , DE;
Abstract
The present invention relates to a process for the production of polyarylene ether block copolymers comprising, in a first stage, the reaction of at least one aromatic dihydroxy compound comprising 4,4'-dihydroxybiphenyl in a molar excess and of at least one aromatic dihalogen compound, to form a polybiphenyl sulfone polymer, and then, in a second stage, the reaction of the polybiphenyl sulfone polymer with at least one aromatic dihydroxy compound and of at least one aromatic dihalogen compound. The invention further relates to the resultant polyarylene sulfone block copolymers and to the use of the polyarylene sulfone block copolymers for the production of moldings, fibers, films, or foams.