Title:
POWDERY PAPER STRENGTHENING AGENT, METHOD FOR PRODUCING POWDERY PAPER STRENGTHENING AGENT, PAPER STRENGTHENING AGENT SOLUTION AND PAPER
Document Type and Number:
WIPO Patent Application WO/2020/189171
Kind Code:
A1
Abstract:
A powdery paper strengthening agent which contains a branched (meth)acrylamide polymer (A) that has a weight average molecular weight of from 1,000,000 to 8,000,000 and a molecular weight distribution of from 1.4 to 3.0, and which is configured such that: the branched (meth)acrylamide polymer (A) contains, as constituent monomers, a (meth)acrylamide (a1), a crosslinkable unsaturated monomer (a2), and at least one of a cationic unsaturated monomer (a3) and an anionic unsaturated monomer (a4); and the content of unreacted component (a1) is 1,000 ppm or less.
Inventors:
NISHIURA SHOGO (JP)
FUJIOKA DAISUKE (JP)
OKADA KEISUKE (JP)
FUJIOKA DAISUKE (JP)
OKADA KEISUKE (JP)
Application Number:
PCT/JP2020/006869
Publication Date:
September 24, 2020
Filing Date:
February 20, 2020
Export Citation:
Assignee:
ARAKAWA CHEM IND (JP)
International Classes:
C08F220/56; D21H17/37; D21H21/18
Domestic Patent References:
| WO2020059557A1 | 2020-03-26 |
Foreign References:
| JP2018012909A | 2018-01-25 | |||
| JPH1025691A | 1998-01-27 | |||
| JP2013060498A | 2013-04-04 |
Attorney, Agent or Firm:
ASAHINA & CO. (JP)
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