Invention Grant
- Patent Title: Aqueous vinylidene fluoride-(meth)acrylic co-polymer latex, electrode and lithium ion secondary battery using the same
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Application No.: US14232894Application Date: 2012-07-13
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Publication No.: US10079388B2Publication Date: 2018-09-18
- Inventor: Milena Stanga , Riccardo Pieri , Anna Maria Bertasa , Bradley Lane Kent , Giulio Brinati
- Applicant: Milena Stanga , Riccardo Pieri , Anna Maria Bertasa , Bradley Lane Kent , Giulio Brinati
- Applicant Address: IT Bollate (Milan)
- Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
- Current Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
- Current Assignee Address: IT Bollate (Milan)
- International Application: PCT/EP2012/063778 WO 20120713
- International Announcement: WO2013/010936 WO 20130124
- Main IPC: H01M4/04
- IPC: H01M4/04 ; H01M4/1393 ; H01M4/62 ; H01M10/0525 ; C08L27/16 ; C09D127/16 ; H01M4/133

Abstract:
The present invention pertains to an aqueous composition comprising: (A) an aqueous latex comprising at least one vinylidene fluoride (VDF) polymer [polymer (F)] comprising recurring units derived from vinylidene fluoride (VDF) and at least one (meth)acrylic monomer (MA) having formula (I) here below: wherein: —R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and —ROH is a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, (B) at least one powdery electrode material, and (C) optionally, less than 10% by weight, based on the total weight of the aqueous composition, of at least one organic solvent (S), wherein the polymer (F) in the aqueous latex is under the form of primary particles having an average primary particle size of less than 1 μm, as measured according to ISO 13321. The present invention also pertains to a process for manufacturing an electrode using said aqueous composition, to an electrode comprising a metal substrate coated on at least one surface with said aqueous composition and to use of said electrode for manufacturing a non-aqueous-type electrochemical device.
Public/Granted literature
- US20140154573A1 AQUEOUS VINYLIDENE FLUORIDE POLYMER LATEX Public/Granted day:2014-06-05
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