- Patent Title: Method for producing aqueous polymer dispersions in a tube reactor
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Application No.: US17264671Application Date: 2019-04-30
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Publication No.: US11591423B2Publication Date: 2023-02-28
- Inventor: Hans-Peter Weitzel , Robert Braunsperger
- Applicant: WACKER CHEMIE AG
- Applicant Address: DE Munich
- Assignee: WACKER CHEMIE AG
- Current Assignee: WACKER CHEMIE AG
- Current Assignee Address: DE Munich
- Agency: Brooks Kushman P.C.
- International Application: PCT/EP2019/061017 WO 20190430
- International Announcement: WO2020/221435 WO 20201105
- Main IPC: C08F218/08
- IPC: C08F218/08 ; C08L29/04
Abstract:
Aqueous polymer dispersions are produced by radically initiated emulsion polymerization of ethylenically unsaturated monomers in the presence of protective colloids and/or emulsifiers in a continuously operated tubular reactor, characterized in that the direction of flow of the reactor contents is reversed along the longitudinal axis of the reactor over the course of polymerization.
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