Title:
紙の製造方法
Document Type and Number:
Japanese Patent JP7234667
Kind Code:
B2
Abstract:
To provide a method for producing a paper by which a sufficient sizing effect can be obtained even when a premix liquid of a rosin-based sizing agent composition and an aluminum compound is added to pulp.SOLUTION: In a method for producing paper comprising (A) a rosin-based substance and (B) a (meth)acrylamide-based polymer having a hydrophobic group and an ionic group, the component (A) is dispersed in water with the component (B), and the stabilized sizing composition (C) and a polyvalent metal salt (D) are added to a pulp slurry while continuously mixing them, wherein the component (A) contains 1-15 mass% dihydro agathic acid, and the component (B) is a polymer obtained by using a monomer of a specific composition containing (b-1) an anionic monomer, and the sulfonic acid-based monomer: the carboxylic acid-based monomer in (b-1) is 0-0.5: 1 (molar ratio).SELECTED DRAWING: None
Inventors:
Makoto Shiraishi
Fumiya Hirakawa
Yui Takagi
Kazuya Miyamoto
Fumiya Hirakawa
Yui Takagi
Kazuya Miyamoto
Application Number:
JP2019019504A
Publication Date:
March 08, 2023
Filing Date:
February 06, 2019
Export Citation:
Assignee:
Star light pmc corporation
International Classes:
D21H21/16; D21H17/37; D21H17/62; D21H23/10
Domestic Patent References:
| JP2015105452A | ||||
| JP2017040021A | ||||
| JP2013185288A | ||||
| JP2003055891A | ||||
| JP8337997A | ||||
| JP2017066579A |
Attorney, Agent or Firm:
Yasuhiro Tsuta
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