EP 0661392 A1 19950705 - Method for preparation of a polyvinyl alcohol-based spinning solution.
Title (en)
Method for preparation of a polyvinyl alcohol-based spinning solution.
Title (de)
Verfahren zur Herstellung einer Spinnlösung von Polyvinylalkohol.
Title (fr)
Procédé de préparation d'une solution de filage d'alcool polyvinylique.
Publication
Application
Priority
- JP 35314693 A 19931228
- JP 35315393 A 19931228
Abstract (en)
Methods for the preparation of a polyvinyl alcohol-based spinning solution. One method comprises dissolving polyvinyl alcohol in a solvent, and adding an alkaline ingredient to, and causing the same to be dissolved in the solvent and/or polyvinyl alcohol. Another method comprises dissolving polyvinyl alcohol under heating in a solvent, adding an alkaline ingredient to the solvent and/or polyvinyl alcohol to form a polyvinyl alcohol/ solvent/alkali mixture, thereby saponifying a residual acetyl group of the polyvinyl alcohol, then adding an acid ingredient to the mixture, and effecting heating. <IMAGE>
IPC 1-7
IPC 8 full level
D01F 6/14 (2006.01)
CPC (source: EP)
D01F 6/14 (2013.01)
Citation (search report)
- [A] EP 0496376 A2 19920729 - UNITIKA LTD [JP]
- [A] EP 0338534 A2 19891025 - KURARAY CO [JP]
- [A] EP 0146084 A2 19850626 - TORAY INDUSTRIES [JP] & US 4698194 A 19871006 - TANAKA HIROYOSHI [JP], et al & US 4603083 A 19860729 - TANAKA HIROYOSHI [JP], et al
- [A] EP 0105169 A2 19840411 - ALLIED CORP [US] & US 4599267 A 19860708 - KWON YOUNG D [US], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 173 (C - 0828) 2 May 1991 (1991-05-02)
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 173 (C - 0828) 2 May 1991 (1991-05-02)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94203761 A 19941227