公开(公告)号：US20170081447A1

公开(公告)日：2017-03-23

申请号：US15310749

申请日：2015-05-11

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Marco DOSSI ,  Giovanni COMINO ,  Laura PONTA

IPC: C08F214/22 ,  C08L27/16

CPC classification number: C08F214/22 ,  C08F2/22 ,  C08F2/38 ,  C08F14/22 ,  C08F14/26 ,  C08F214/222 ,  C08F214/225 ,  C08F214/262 ,  C08F214/265 ,  C08L27/16 ,  C08L2201/52

Abstract: The invention pertains to a method for emulsion polymerization of at least one fluoromonomer, said method comprising: (i) providing at least one aqueous emulsion comprising at least one surfactant and a monomer mixture [mixture (M)] comprising at least one fluoromonomer [monomer (F)] and optionally at least one additional monomer, and at least one RAFT/MADIX agent; (ii) initiating the polymerization of said monomer mixture in said aqueous emulsion adding at least one radical initiator; (iii) continuing the polymerization by adding additional amounts of said mixture (M) and said RAFT/MADIX agent, until converting the targeted amount of said mixture (M), and (iv) terminating the polymerization and recovering a latex of fluoropolymer [polymer (F)]; wherein the amount of RAFT/MADIX agent is comprised between 0.1 and 0.5% moles, with respect to the total amount of converted monomers of said monomer mixture, and wherein the amount of said RAFT/MADIX agent present in the aqueous emulsion when initiating the polymerization in step (ii) is of at most 50% with respect to the total amount of said RAFT/MADIX agent.

公开(公告)号：US20240287260A1

公开(公告)日：2024-08-29

申请号：US17280317

申请日：2019-10-01

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Mattia BASSI ,  Martina CORASANITI ,  Laura PONTA

IPC: C08J3/00 ,  C08L27/16

CPC classification number: C08J3/005 ,  C08L27/16 ,  C08J2327/16 ,  C08J2427/16 ,  C08L2201/52 ,  C08L2205/025 ,  C08L2207/04

Abstract: The present invention pertains to a method of making a latex-blended composition of a fluorinated thermoplastic elastomer and of a (per)fluoroelastomer, to the composition obtained therefrom, and to the use of the same for making shaped parts, said composition possessing an improved softness/mechanical properties compromise.

公开(公告)号：US20200247922A1

公开(公告)日：2020-08-06

申请号：US16757373

申请日：2018-10-16

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Fiorenza D'APRILE ,  Valeriy KAPELYUSHKO ,  Bradley Lane KENT ,  Giulio BRINATI ,  Laura PONTA

IPC: C08F14/22 ,  C08F214/22 ,  C08F228/02 ,  C08F2/00 ,  C08F2/22

Abstract: The present invention relates to a fluorosurfactant-free emulsion polymerization method for the synthesis of a fluoropolymer, more in particular of a VDF-based polymer.