Method for stabilizing the hygral expansion behavior of protein

Details Method for stabilizing the hygral expansion behavior of protein Method for stabilizing the hygral expansion behavior of protein

1994-03-07

1996-02-27

Willis, Jr., Prince

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Proteinaceous fibers

81281, 81283, 81275, 252 88, 252 89, D06M 1311, D06M10112

Patent

active

054944872

ABSTRACT:
Disclosed is a method comprising: a step in which a polyoxirane derivative of PEGDE or PPGDE having a water-dissolving rate of not less than 95 % by weight is dissolved in a solvent which has a solubility parameter of 13.0-10.1 (cal/cm.sup.3).sup.1/2, has a boiling point in a range of 101.degree.-190.degree. C. and is freely soluble in water, so as to provide a water-soluble solution; a step in which the water-soluble solution is added with an aqueous solution containing at least two or more species of catalysts for oxirane compounds selected from the group consisting of dicyandiamide, hydroxy carboxylic acid salts, thiocyanate and L-cysteines so as to prepare a treatment solution; a step in which a protein fiber product is immersed in the treatment solution followed by dehydration; a step in which the dehydrated protein fiber product is subjected to a heat treatment so as to make a cross-linking reaction of the polyoxirane derivative with the protein fiber product; and a step in which by-products are removed from the heat-treated protein fiber product. The hygral expansion behavior of the protein fiber product is stabilized more surely without deteriorating its feeling, and the scarcely water-soluble by-products generated by the heat treatment are removed.

REFERENCES:
patent: 2829071 (1958-04-01), Schroeder

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