Title:
コポリマーを製造するための半連続処理方法
Document Type and Number:
Japanese Patent JP2011526305
Kind Code:
A
Abstract:
A process for the preparation of a copolymer in a semicontinuous mode of operation in a polymerization apparatus containing a polymerization reactor connected to a metering device, in each case acid monomer being initially introduced into the metering device and polyether macromonomer and water into the polymerization reactor, acid monomer being metered from the metering device into the polymerization reactor, the metering of the acid monomer into the polymerization reactor being effected in such a way that first a polymerization pH is established in the aqueous medium and then, until the conversion of 70 mol % of the polyether macromonomer initially introduced into the polymerization reactor, acid monomer is passed into the polymerization reactor in an amount per unit time such that the pH in the aqueous medium deviates by not more than ±0.3 from the initially established polymerization pH.
Inventors:
Gerhard albrecht
Claus Lorenz
Christian Scholz
Petra Wagner
Claus Lorenz
Christian Scholz
Petra Wagner
Application Number:
JP2011500137A
Publication Date:
October 06, 2011
Filing Date:
February 10, 2009
Export Citation:
Assignee:
Construction Research & Technology GmbH
International Classes:
C08F283/06
Domestic Patent References:
| JP2006248889A | 2006-09-21 | |||
| JP2007326776A | 2007-12-20 | |||
| JP2007523235A | 2007-08-16 | |||
| JP2003002907A | 2003-01-08 |
Attorney, Agent or Firm:
Takuya Kuno
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard