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:
Oct. 21, 2025
Filed:
Apr. 26, 2018
Applicant:
The University of Liverpool, Liverpool, GB;
Inventors:
Assignee:
THE UNIVERSITY OF LIVERPOOL, Liverpool, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/38 (2006.01); C08F 2/40 (2006.01); C08F 2/42 (2006.01); C08F 12/36 (2006.01); C08F 122/10 (2006.01); C08F 222/10 (2006.01); C08F 222/38 (2006.01); C08G 83/00 (2006.01); C08F 32/06 (2006.01); C08F 36/20 (2006.01); C08F 112/36 (2006.01); C08F 132/06 (2006.01); C08F 136/20 (2006.01); C08F 212/36 (2006.01); C08F 232/06 (2006.01); C08F 236/20 (2006.01);
U.S. Cl.
CPC ...
C08F 2/38 (2013.01); C08F 12/36 (2013.01); C08F 122/1006 (2020.02); C08F 222/102 (2020.02); C08F 222/1063 (2020.02); C08F 222/1067 (2020.02); C08F 222/385 (2013.01); C08G 83/005 (2013.01); C08F 2/40 (2013.01); C08F 2/42 (2013.01); C08F 32/06 (2013.01); C08F 36/20 (2013.01); C08F 112/36 (2013.01); C08F 132/06 (2013.01); C08F 136/20 (2013.01); C08F 212/36 (2013.01); C08F 222/1025 (2020.02); C08F 222/103 (2020.02); C08F 222/1035 (2020.02); C08F 222/104 (2020.02); C08F 222/1045 (2020.02); C08F 222/1055 (2020.02); C08F 232/06 (2013.01); C08F 236/20 (2013.01); C08F 2438/00 (2013.01);
Abstract
A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.