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:
May. 06, 2025
Filed:
Oct. 31, 2019
Applicant:
The University of Liverpool, Liverpool, GB;
Inventors:
Assignee:
THE UNIVERSITY OF LIVERPOOL, Liverpool, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 222/10 (2005.12); C08F 2/38 (2005.12); C08F 212/36 (2005.12); C08K 5/03 (2005.12); C08K 5/375 (2005.12); C08L 47/00 (2005.12);
U.S. Cl.
CPC ...
C08F 222/102 (2020.01); C08F 2/38 (2012.12); C08F 212/36 (2012.12); C08K 5/03 (2012.12); C08K 5/375 (2012.12); C08L 47/00 (2012.12); C08L 2201/06 (2012.12);
Abstract
Responsive or degradable branched polymers may be prepared by 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 multivinyl monomer may comprise a cleavable group, for example an ester, or a multiplicity of such groups, between two vinyl groups. Said monomer may be a macromonomer containing multiple cleavage sites.