Invention Grant
US09574022B2 Controlled free-radical polymerization of N-vinyl lactams in an aqueous medium
有权
N-乙烯基内酰胺在水性介质中的受控自由基聚合
- Patent Title: Controlled free-radical polymerization of N-vinyl lactams in an aqueous medium
- Patent Title (中): N-乙烯基内酰胺在水性介质中的受控自由基聚合
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Application No.: US13876434Application Date: 2011-09-22
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Publication No.: US09574022B2Publication Date: 2017-02-21
- Inventor: Mathias Destarac , Aymeric Guinaudeau , Stéphane Mazieres , James Wilson
- Applicant: Mathias Destarac , Aymeric Guinaudeau , Stéphane Mazieres , James Wilson
- Applicant Address: FR Aubervilliers FR Paris
- Assignee: RHODIA OPERATIONS,CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)
- Current Assignee: RHODIA OPERATIONS,CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)
- Current Assignee Address: FR Aubervilliers FR Paris
- Agency: Stites & Harbison, PLLC
- Agent B. Aaron Schulman, Esq.
- Priority: FR1057770 20100927
- International Application: PCT/FR2011/052185 WO 20110922
- International Announcement: WO2012/045944 WO 20120412
- Main IPC: C08F2/38
- IPC: C08F2/38 ; C08F226/10 ; C08F293/00 ; C08F4/40 ; C08F126/10
Abstract:
The present invention relates to a method for preparing a polymer based on N-vinyl lactam monomer units, which comprises a step (E) for controlled radical polymerization of a composition comprising: monomers containing (and most often consisting of) N-vinyl lactam monomers, either identical or different (and generally identical); an agent for controlling the radical polymerization, for example comprising a thiocarbonylthio group —S(C═S)—; and a radical polymerization initiator which is a redox system comprising a reducing agent (Red) and an oxidizing agent (Ox).
Public/Granted literature
- US20130289214A1 CONTROLLED FREE-RADICAL POLYMERIZATION OF N-VINYL LACTAMS IN AN AQUEOUS MEDIUM Public/Granted day:2013-10-31
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