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Patent Searching and Data


Title:
METHOD FOR PRODUCING POWDERED N-VINYLCARBOXAMIDE POLYMER COMPOSITION AND POLYVINYLAMINE AQUEOUS SOLUTION
Document Type and Number:
WIPO Patent Application WO/2015/037554
Kind Code:
A1
Abstract:
 Provided is a precursor for producing polyvinylamine aqueous solution having high storage stability without any decrease in the viscosity of the precursor aqueous solution even with long-term storage when producing polyvinylamine aqueous solution. A powdered N-vinylcarboxamide polymer composition containing N-vinylcarboxamide polymer, the viscosity of an aqueous solution of polyvinylamine obtained by hydrolyzing the polymer being 1.0 × 106 mPa∙s (25°C) or lower and the content of azo initiator in the aqueous solution being from more than 0 parts by mass to 0.05 parts by mass per 100 parts by mass of polyvinylamine.

Inventors:
ISHII AKIHIRO (JP)
MORI YASUHARU (JP)
Application Number:
PCT/JP2014/073646
Publication Date:
March 19, 2015
Filing Date:
September 08, 2014
Export Citation:
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Assignee:
MITSUBISHI RAYON CO (JP)
International Classes:
C08F6/00; C08F8/12; C08F26/02
Foreign References:
JPH06239926A1994-08-30
JP2010059220A2010-03-18
JP2006257287A2006-09-28
JPH08512352A1996-12-24
JP2001253905A2001-09-18
JPH05125109A1993-05-21
US6797785B12004-09-28
JP2010059220A2010-03-18
JP2012059220A2012-03-22
JP2004075814A2004-03-11
Other References:
See also references of EP 3045479A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
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