Invention Application
US20120029142A1 Heterogeneous Vinyl Acetate Based Copolymers as Binder for Paints
有权
非均相乙酸乙烯基共聚物作为涂料的粘合剂
- Patent Title: Heterogeneous Vinyl Acetate Based Copolymers as Binder for Paints
- Patent Title (中): 非均相乙酸乙烯基共聚物作为涂料的粘合剂
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Application No.: US12845072Application Date: 2010-07-28
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Publication No.: US20120029142A1Publication Date: 2012-02-02
- Inventor: Lizandra Belmonte Rodrigues de Castro , Kerstin Gohr
- Applicant: Lizandra Belmonte Rodrigues de Castro , Kerstin Gohr
- Applicant Address: DE Frankfurt
- Assignee: CELANESE EMULSIONS GMBH
- Current Assignee: CELANESE EMULSIONS GMBH
- Current Assignee Address: DE Frankfurt
- Main IPC: C08L31/04
- IPC: C08L31/04 ; C08F2/00

Abstract:
The present invention describes a method for the manufacturing of a multi-stage polymer by the following steps: a) polymerizing monomer mixture (A) comprising a-i) vinyl acetate and a-ii) at least one vinyl ester of an aromatic carboxylic acid via free radical emulsion polymerization to obtain copolymer (A); and b) polymerizing monomer mixture (B) comprising b-i) vinyl acetate and b-ii) at least one vinyl ester of aliphatic branched or unbranched carboxylic acids having at least 3 carbon atoms, via free radical emulsion polymerization in the presence of copolymer (A) to obtain the multi-stage polymer with the proviso that said monomer mixture (B) can also be polymerized first to obtain a copolymer (B) and subsequently monomer mixture (A) is polymerized in the presence copolymer (B) to obtain the multi-stage polymer.
Public/Granted literature
- US08440766B2 Heterogeneous vinyl acetate based copolymers as binder for paints Public/Granted day:2013-05-14
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