Title:
METHOD OF STABILIZING HYGRAL EXPANSION OF PROTEIN FIBER PRODUCT
Document Type and Number:
WIPO Patent Application WO/1994/002675
Kind Code:
A1
Abstract:
A method of stabilizing a hygral expansion of a protein fiber product which comprises the steps of preparing a water-soluble solution by dissolving a polyoxirane derivative of PEGDE or PPGDE having a water solubility of 95 wt.% or above in a solvent which has a solubility parameter of 13.0-10.1 (cal/cm3)1/2 and a boiling point of 101-190 �C and is freely miscible with water, preparing a treatment solution by adding to the obtained solution an aqueous solution containing at least two catalysts for oxirane compounds selected from the group consisting of dicyanodiamide, hydroxy carboxylic acid salts, thiocyanic acid salts and L-cysteines, dipping a protein fiber product in the treatment solution followed by dehydration, cross-linking the dehydrated fiber product with the polyoxirane derivative by heat treating the fiber product, and removing by-products from the heat-treated fiber product. This method serves to stabilize a hygral expansion of a protein fiber product with more certainty and remove difficultly water-soluble by-products formed by the heat treatment.
Inventors:
KOIKE SACHIZUMI (JP)
Application Number:
PCT/JP1993/001005
Publication Date:
February 03, 1994
Filing Date:
July 19, 1993
Export Citation:
Assignee:
TUYAKU CO LTD (JP)
KOIKE SACHIZUMI (JP)
KOIKE SACHIZUMI (JP)
International Classes:
D06M11/00; D06M13/02; D06M13/10; D06M13/11; D06M13/244; D06M13/248; D06M13/268; D06M13/322; D06M13/342; D06M13/345; D06M13/402; D06M13/432; D06M15/53; D06M15/55; D06M23/00; D06M101/00; D06M101/02; D06M101/10; D06M101/12; (IPC1-7): D06M13/11
Foreign References:
| JPH01266276A | 1989-10-24 | |||
| JPS52987A | 1977-01-06 | |||
| JPS5031194A | 1975-03-27 | |||
| JPH0345780A | 1991-02-27 | |||
| JPS469426B1 | 1971-03-10 |
Other References:
See also references of EP 0617158A4
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