Branched water-soluble polymer as a battery binder

Abstract

The present invention relates to a new branched water-soluble polymer, its preparation process, and its use, in particular, as a binder in the field of batteries.

Claims

characterized in that the polymerization process is reversible addition-fragmentation chain transfer polymerization.

11. Branched water-soluble polymer according to one of claims 1 to 10, characterized in that the polymerization process is sequenced into several successive castings of several fractions of monomer(s) constituting the branched water-soluble polymer.

12. Branched water-soluble polymer according to one of claims 1 to 9, characterized in that the branched water-soluble polymer has a gradient, block or micro-block structure.

13. Use of the branched water-soluble polymer according to one of claims 1 to 12, as a binder for an electrode.

14. Composition comprising: - a branched water-soluble polymer according to one of claims 1 to 12; - at least one active electrode material; - a solvent. EPO FORM 1503 12.99 (P04C14) FRENCH REPUBLIC will go ■■■■■ I NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY PRELIMINARY RESEARCH REPORT established on the basis of the latest claims filed before the start of the search DOCUMENTS CONSIDERED RELEVANT Category Citation of the document with indication, where necessary, of the relevant parts X US 2016 / 126551 Al (SASAKI TOMOKAZU [JP]) May 5, 2016 (2016-05-05) * column 2, lines 34-35 * * column 11, line 25 - column 12, line 12 * * example 1 * A US 7 884 056 B2 (RHODIA CHIMIE SA [FR]) February 8, 2011 (2011-02-08) * paragraph [0014]; example 1 * Claim(s) concerned CATEGORY OF CITED DOCUMENTS Date of completion of the research March 14, 2024 1-10 1-14 National registration number FA 922942 FR 2308930 Classification attributed to the invention by the INPI C08F 2 / 38 C08F 220 / 06 C08F 220 / 56 C08L 33 / 02 C08L 33 / 26 H01M 4 / 62 TECHNICAL AREAS WANTED (IPC) C08F H01M Examiner Plehiers, Mark X: particularly relevant on its own Y: particularly relevant in combination with another document of the same category A: technological background O: unwritten disclosure P: intermediate document T: theory or principle underlying the invention E: patent document with a date prior to the filing date and which was only published on that filing date or on a later date. D: cited in the application L: cited for other reasons &: member of the same family, corresponding document