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:
Dec. 07, 2021
Filed:
Nov. 28, 2017
Applicant:
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Inventors:
Roopali Rai, Geleen, NL;
Stephen D. Pask, Geleen, NL;
Susanta Mitra, Bangalore, IN;
Abdulsattar Dawood, Geleen, NL;
Assignee:
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 120/44 (2006.01); D01F 6/18 (2006.01); C08F 220/44 (2006.01);
U.S. Cl.
CPC ...
C08F 120/44 (2013.01); C08F 220/44 (2013.01); D01F 6/18 (2013.01);
Abstract
The present invention relates to a process for the production of polyacrylonitrile by polymerisation of a reaction mixture comprising acrylonitrile in a solution where the solvent is a eutectic system comprising a quaternary ammonium compound and a hydrogen donor. Such process allows for the production of a polyacrylonitrile having a desirably high molecular weight, whilst polymerisation time is reduced, and where the solvents are environmentally benign, biodegradable and may be reused in the polymerisation process.