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Constrictive-proof processing agent for keratin fabric and constrictive-proof processing method using the same

A technology of keratin fiber and processing agent, which is applied in fiber processing, animal fiber, textile and papermaking, etc., can solve the problems of insufficient resinization, harsh environment, and increased dissociation temperature of end-capping agent.

Inactive Publication Date: 2002-11-20
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with the chlorine-based shrink-resistant processing method is that organic substances such as proteins of keratin fibers combine with chlorine to form AOX (AbsorbableOrganic Halogens, absorbable organic halogen compounds), which are discharged from the waste liquid and have a bad impact on the environment.
Moreover, when using active hydrogen-containing end-capping agents other than sodium bisulfite, for example, in the case of polyurethane prepolymers terminated with alcohols and alkylphenols, due to the increased dissociation temperature of the end-capping agent, only drying operation The heating cannot be fully resinized, and cannot maintain sufficient anti-shrinkage resistance to washing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0044] Add 50.4 parts of hexamethylene diisocyanate to 300 parts of an alkylene oxide addition polymer (average molecular weight 3,000, ethylene oxide / propylene oxide (EO / PO) weight ratio 70 / 30) starting with glycerol, React at 100° C. for 2 hours to prepare a polyurethane prepolymer containing 4.0 wt % of free isocyanate groups.

[0045] Next, the system temperature was lowered to 70° C., 8.9 parts of N,N-dimethylethanolamine was added, and the reaction was carried out at 70° C. for 100 minutes. At this point the free isocyanate group content was 2.5%. Next, the temperature of the system was adjusted to 50° C., 29.5 parts of p-hydroxybenzoic acid were added, the internal temperature was raised to 70° C., and the reaction was carried out for 120 minutes.

[0046] After confirming that the reaction of free isocyanate groups disappears, add 12.6 parts of dimethyl sulfate, carry out quaternization reaction at 70°C for 180 minutes, and dilute with 1600 parts of water to obtain a ...

Synthetic example 2

[0048] Add 100 parts of hexanediol adipate (MW1000) to 300 parts of an alkylene oxide addition polymer (average molecular weight 3,000, EO / PO weight ratio 70 / 30) starting from glycerin, and then add hexamethylene 67.2 parts of diisocyanates were reacted at 100° C. for 2 hours to prepare a polyurethane prepolymer containing 3.0 wt % of free isocyanate groups.

[0049] Next, the system temperature was lowered to 70° C., 8.9 parts of N,N-dimethylethanolamine was added, and the reaction was carried out at 70° C. for 100 minutes. The free isocyanate group content at this time was 1.8%. Next, the system temperature was set at 50° C., 41.5 parts of butyl p-hydroxybenzoate were added, the internal temperature was raised to 70° C., and the reaction was carried out for 120 minutes.

[0050] After confirming that the reaction of free isocyanate groups disappears, add 15.4 parts of diethyl sulfate, carry out quaternization reaction at 70°C for 180 minutes, and dilute with 1860 parts of w...

Synthetic example 3

[0052] Add 50.4 parts of hexamethylene diisocyanate to 300 parts of alkylene oxide addition polymer (average molecular weight 3,000, EO / PO weight ratio 0 / 100) starting from trimethylolpropane, and react at 100°C for 2 hours, a polyurethane prepolymer containing 4.0 wt% of free isocyanate groups was prepared.

[0053] Next, the system temperature was lowered to 70° C., 8.9 parts of N,N-dimethylethanolamine was added, and the reaction was carried out at 70° C. for 100 minutes. The free isocyanate group content at this time was 1.2%. Next, the temperature of the system was adjusted to 50° C., 15 parts of p-hydroxybenzoic acid were added, the internal temperature was raised to 70° C., and the reaction was carried out for 120 minutes.

[0054] After confirming that the reaction of free isocyanate groups disappears, add 15.4 parts of diethyl sulfate, carry out quaternization reaction at 70°C for 180 minutes, and dilute with 1600 parts of water to obtain a transparent and viscous th...

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PUM

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Abstract

The present invention provides a keratin fiber in the form of wool tops, slubs, or filaments, which can be fully resinized by using a non-chlorine compound and only by heating in a drying operation, and has excellent washing durability. An anti-shrinkage processing agent capable of maintaining the unique feel and appearance of keratin fibers and a processing method thereof, the anti-shrinkage processing agent contains a part of the isocyanate group reacted with an active hydrogen compound to introduce a hydrophilic group, and the remaining free The isocyanate group is a water-soluble heat-reactive polyurethane prepolymer capped with a capping agent that can be regenerated by heating.

Description

technical field [0001] The present invention relates to a shrink-proof processing agent for keratin fibers and a shrink-proof processing method using the same. Background technique [0002] As a washing method for keratin fibers, if the water-based washing is not subjected to shrink-resistant processing, it will shrink and stick, so "dry cleaning" using chlorine-based solvents and petroleum-based solvents is the main method. However, due to environmental pollution problems such as air pollution caused by dry cleaning, water-based washing is developing in response to the strengthening of environmental issues. [0003] As the anti-shrinkage processing of keratin fibers in the state of tops, woolen yarns or filaments, the method of first treating with chlorine or chlorine-based compounds, followed by chlorine-based cationic resins (polyamide epichlorohydrin resins) has been widely used all over the world. with. However, the problem with the chlorine-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/80C08G18/08C08G18/10C08G18/48D06M15/564D06M15/568D06M15/572D06M101/12
CPCC08G18/0814C08G18/10C08G18/4837D06M15/564D06M15/568D06M15/572C08G18/286C08G18/284C08G18/287C08G18/3271C08G18/2815
Inventor 土居猛齐内直文胡内成浩宫村岳志
Owner DAI ICHI KOGYO SEIYAKU CO LTD