Title:
【発明の名称】長い貯蔵寿命を有する、ビニルアミン単位含有ポリマー水溶液の製造方法およびその用途
Document Type and Number:
Japanese Patent JPH10501561
Kind Code:
A
Abstract:
PCT No. PCT/EP95/01030 Sec. 371 Date Sep. 30, 1996 Sec. 102(e) Date Sep. 30, 1996 PCT Filed Mar. 20, 1995 PCT Pub. No. WO95/26989 PCT Pub. Date Oct. 12, 1995Solutions of polymers containing vinylamine units, which solutions have a long shelf life, are prepared by hydrolyzing polymers containing N-vinylcarboxamide units with acids in an aqueous medium and removing the carboxylic acids eliminated from the polymers as esters from the aqueous polymer solution after the hydrolysis by adding at least stoichiometric amounts of at least one C1-C6-alcohol and distilling off the esters from the reaction mixture, and said aqueous solutions are used as dry and wet strength agents in papermaking.
Inventors:
Niruz, Claudia
Winter, manfred
Clener, Michael
Andreas, Stenge
Schumacher, Rudolph
Winter, manfred
Clener, Michael
Andreas, Stenge
Schumacher, Rudolph
Application Number:
JP52537995A
Publication Date:
February 10, 1998
Filing Date:
March 20, 1995
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C08F8/12; D21H17/34; D21H21/18; D21H21/20; (IPC1-7): C08F8/12; D21H17/34
Attorney, Agent or Firm:
Tajiro Taiji (1 person outside)