Title:
PRODUCTION OF POLYVINYL ALCOHOL-BASED YARN
Document Type and Number:
Japanese Patent JP3450905
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for producing polyvinyl alcohol (PVA)-based yarn having high tenacity and high hot water resistance suitable for industrial materials, especially belts.
CONSTITUTION: PVA is dissolved in an organic solvent to prepare a spinning dope, which is subjected to dry spinning in a coagulating bath to give coagulated yarn. The coagulated yarn is provided with a finishing oil mixed with a catalyst for promoting dehydration reaction and drawn in dry heat to produce PVA- based yarn having high tenacity and high hot water resistance. In the operation, an oil consisting essentially of three components A, B and C as shown below is used as the finishing oil. The component A is 5-30wt.% of an ester of an aliphatic alcohol and an aliphatic carboxylic acid or an adduct of it and ethylene oxide and/or propylene oxide. The component B is 20-80wt.% of an adduct of an aliphatic alcohol with ethylene oxide and/or propylene oxide. The component C is 10-50wt.% of an adduct of an aliphatic amine with ethylene oxide and/or propylene oxide.
Inventors:
Shiro Murakami
Takeshi Kitahara
Takeshi Kitahara
Application Number:
JP18950894A
Publication Date:
September 29, 2003
Filing Date:
August 11, 1994
Export Citation:
Assignee:
Unitika Ltd.
International Classes:
D01F6/14; D01D5/06; D01F11/06; D02G3/48; D06M13/02; D06M13/144; D06M13/17; D06M13/224; D06M13/322; D06M13/368; D06M13/372; D06M15/53; D06M101/00; D06M101/12; D06M101/16; D06M101/18; D06M101/24; (IPC1-7): D01F11/06; D01F6/14; D06M13/17; D06M13/224; D06M13/368; D06M15/53
Domestic Patent References:
| JP4163311A | ||||
| JP4126830A | ||||
| JP382815A | ||||
| JP5148767A | ||||
| JP475238B1 |
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