公开(公告)号：US20220298336A1

公开(公告)日：2022-09-22

申请号：US17619271

申请日：2020-06-26

Applicant: Arkema France

Inventor： Alexandre VERMOGEN ,  Aline COUFFIN ,  Kevin Yocca

IPC: C08L9/10 ,  C08L51/04 ,  C08F283/01

Abstract: The present invention relates to a composition comprising a compound with two polymerizable groups, a multistage polymer and a thermoplastic polymer its process of preparation and its use. In particular the present invention relates to a composition comprising a compound with two polymerizable groups, a multistage polymer in form of polymeric particles made by a multistage process and a (meth)acrylic polymer. More particularly the present invention relates to polymer composition comprising a compound with two polymerizable groups, polymeric particles made by a multistage process comprising at least two stages and a (meth)acrylic polymer, its method of preparation, its use for making impact modified polymer compositions, comprising thermosetting resins and compositions and articles comprising it.

公开(公告)号：US20190233603A1

公开(公告)日：2019-08-01

申请号：US16311760

申请日：2017-06-29

Applicant: Arkema France

Inventor： Pierre Escale ,  Pierre GERARD ,  Aline COUFFIN ,  Raber INOUBLI ,  Philippe HAJJI

IPC: C08J5/24 ,  C08J5/04 ,  C08F265/06

CPC classification number: C08J5/24 ,  C08F265/06 ,  C08F285/00 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/21 ,  C08J5/04 ,  C08J2333/08 ,  C08J2333/10 ,  C08J2347/00 ,  C08L33/08 ,  C08L33/10

Abstract: The present invention relates to a liquid composition comprising a monomer, a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to a liquid composition comprising a monomer, a (meth)acrylic polymer and a multistage polymer that can be used as a syrup and especially as a syrup for impregnation and for the preparation of for reinforcing the impact strength of a thermoplastic material obtained after polymerization of the syrup. The invention also relates to a process for manufacturing such a syrup. The invention also relates to a process for impregnating a fibrous substrate of long fibers with said viscous liquid syrup. The invention also relates to a fibrous substrate preimpregnated with said syrup which is useful for manufacturing composite parts. More particularly the present invention relates also to a process for preparing a liquid composition comprising a (meth)acrylic monomer, a (meth)acrylic polymer and a multistage polymer.

公开(公告)号：US20180346643A1

公开(公告)日：2018-12-06

申请号：US15780897

申请日：2016-11-29

Applicant: ARKEMA FRANCE ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE PAUL SABATIER (TOULOUSE III)

Inventor： Christophe NAVARRO ,  Didier BOURISSOU ,  Blanca MARTIN-VACA ,  Aline COUFFIN ,  Franck KAYSER

IPC: C08G63/82 ,  C08G64/18 ,  C08G64/30 ,  C08G81/02 ,  C08K5/42 ,  C08K5/053

CPC classification number: C08G63/823 ,  C08G63/64 ,  C08G64/18 ,  C08G64/302 ,  C08G81/027 ,  C08K5/053 ,  C08K5/42

Abstract: The invention relates to a process for controlling the structure of a block copolymer by selective copolymerization, by ring opening, of cyclic carbonate and lactone monomers in the presence of a catalyst based on methanesulfonic acid, the said process comprising a sequence of stages carried out strictly in the following order: a) dissolving the cyclic carbonate monomer in a nonchlorinated aromatic solvent, b) adding, to the monomer solution, a bifunctional initiator chosen from diols or water, c) adding methanesulfonic acid (MSA) as catalyst of the polymerization reaction, d) when all the cyclic carbonate has been consumed, a telechelic polycarbonate capable of acting as macroinitiator of polymerization of the lactone is obtained, e) adding the lactone to the reaction medium in order to selectively obtain a block copolymer.