Title:
METHOD FOR PRODUCING (METH)ACRYLAMIDE-BASED POLYMER PAPERMAKING ADDITIVE AND (METH)ACRYLAMIDE-BASED POLYMER PAPERMAKING ADDITIVE
Document Type and Number:
WIPO Patent Application WO/2019/003625
Kind Code:
A1
Abstract:
In the method for producing a (meth)acrylamide-based polymer papermaking additive, a (meth)acrylamide-based polymer is obtained by carrying out the polymerization of a first polymerization component containing (meth)acrylamide to obtain a first polymer and by carrying out the polymerization, in the presence of the first polymer, of a second polymerization component that contains a tertiary amino-type monomer. In the method, the first polymerization component and/or the second polymerization component contains a (meth)allylsulfonate salt; tertiary amino-type monomer is present in the first polymerization component at not more than 0.1 mol per 100 mol of the (meth)acrylamide in the first polymerization component; and (meth)acrylamide is present in the second polymerization component at not more than 1.0 mol per 100 mol of tertiary amino-type monomer in the second polymerization component.
Inventors:
HORII TADAAKI (JP)
SATO HIROTAKA (JP)
KURIHARA TAKANORI (JP)
FUJIWARA TAKAHIRO (JP)
INAOKA KAZUSHIGE (JP)
SATO HIROTAKA (JP)
KURIHARA TAKANORI (JP)
FUJIWARA TAKAHIRO (JP)
INAOKA KAZUSHIGE (JP)
Application Number:
PCT/JP2018/017171
Publication Date:
January 03, 2019
Filing Date:
April 27, 2018
Export Citation:
Assignee:
HARIMA CHEMICALS INC (JP)
International Classes:
D21H17/37; C08F2/00; C08F220/56; D21H21/18
Domestic Patent References:
| WO2002053835A1 | 2002-07-11 | |||
| WO2016092965A1 | 2016-06-16 | |||
| WO2006118875A2 | 2006-11-09 |
Foreign References:
| JP2011246830A | 2011-12-08 | |||
| JP2004224998A | 2004-08-12 | |||
| JPH06199965A | 1994-07-19 | |||
| JP2015052194A | 2015-03-19 | |||
| JP2008179910A | 2008-08-07 |
Other References:
See also references of EP 3647492A4
Attorney, Agent or Firm:
OKAMOTO, Hiroyuki et al. (JP)
Download PDF: