WET PAPER STRENGTHENING AGENT AND PAPER CONTAINING WET PAPER STRENGTHENING AGENT

Title:

WET PAPER STRENGTHENING AGENT AND PAPER CONTAINING WET PAPER STRENGTHENING AGENT

Document Type and Number:

WIPO Patent Application WO/2014/123119

Kind Code:

A1

Abstract:

Provided are a wet paper strengthening agent which has a high solid content, exhibits excellent storage stability and exhibits an excellent wet paper strength improvement effect, and a paper that contains this wet paper strengthening agent. This wet paper strengthening agent is characterized by containing (A) a polyamide-polyamine-epihalohydrin resin, which is obtained by reacting specified proportions of an epihalohydrin and a polyamide-polyamine obtained by reacting a polyalkylene polyamine with a dibasic carboxylic acid or (B) a polyamide-polyamine-polyurea-epihalohydrin resin, which is obtained by reacting specified proportions of an epihalohydrin and a polyamide-polyamine-polyurea obtained by reacting specified proportions of a polyalkylene polyamine, a dibasic carboxylic acid and a urea compound, and is also characterized by having a specified intrinsic viscosity, a specified Huggins constant, a specified degree of cationization, a specified weight average molecular weight, and a specified proportion of components having a weight average molecular weight of 5000 or higher.

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Inventors:

YOSHITANI KOJI (JP)
KOKUBO YOSHIAKI (JP)

Application Number:

PCT/JP2014/052563

Publication Date:

August 14, 2014

Filing Date:

February 04, 2014

Export Citation:

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Assignee:

SEIKO PMC CORP (JP)

International Classes:

D21H21/20; D21H17/52; D21H17/55; D21H21/18; D21H21/22

Foreign References:

JP2006522208A	2006-09-28
JP2001089562A	2001-04-03
JP2004175818A	2004-06-24
JP2002105197A	2002-04-10
JPS54159496A	1979-12-17
JP2002080592A	2002-03-19
JPH11106505A	1999-04-20
JP2003231751A	2003-08-19
JP2009235608A	2009-10-15

Attorney, Agent or Firm:

SAKAMOTO TOMOHIRO (JP)
Tomohiro Sakamoto (JP)

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