A kind of wool anti-felt shrinkage finishing agent and preparation method and application thereof

A wool anti-felting and anti-shrinkage technology, which is applied in fiber treatment, textiles, papermaking, animal fibers, etc., can solve the problems of poor durability, high cost, fiber damage, etc., achieve mild process conditions and reduce felting shrinkage The effect of short reaction time

Active Publication Date: 2019-09-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing wool anti-felting finishing process has serious damage to the fiber, poor durability and may produce organic chlorides to pollute the environment during the finishing process, the cost is expensive, and the process conditions are difficult to control The problem

Method used

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  • A kind of wool anti-felt shrinkage finishing agent and preparation method and application thereof
  • A kind of wool anti-felt shrinkage finishing agent and preparation method and application thereof
  • A kind of wool anti-felt shrinkage finishing agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A finishing method for making wool fabrics have an anti-felting function, the specific steps are as follows:

[0026] (1) Synthesis of polyurethane prepolymer

[0027] a. Dry polytetramethylene glycol, 2,2-(bis)methylol, and molecular sieves in a vacuum oven at 60°C for 12 hours;

[0028] b. In a 250mL three-necked bottle, add 4.8769g of isophorone diisocyanate, 10g of polytetramethylene glycol, and then add dibutyltin dilaurate in an amount of 0.1wt% of polytetramethylene glycol, at 85°C Oil bath reaction 3.5h;

[0029] c. After the above reaction is completed, lower the temperature of the oil bath to 70°C, add 0.8116g of 2,2-(bis)methylolpropionic acid to the reaction system, and continue the reaction for 3h;

[0030] d. After the above reaction is completed, add 10 mL of butanone treated with molecular sieves to the reaction system.

[0031] (2) Pretreatment of wool fabric

[0032] e. Take 12×16cm wool fabric;

[0033] f. Ultrasonic cleaning of the woolen fabric...

Embodiment 2

[0039] A finishing method for making wool fabrics have an anti-felting function, the specific steps are as follows:

[0040] (1) Synthesis of polyurethane prepolymer

[0041] a. Dry polytetramethylene glycol, 2,2-(bis)methylol, and molecular sieves in a vacuum oven at 60°C for 12 hours;

[0042] b. In a 250mL three-necked bottle, add 4.8769g of isophorone diisocyanate, 10g of polytetramethylene glycol, and then add dibutyltin dilaurate, the amount of which is 0.1wt% of the amount of polytetramethylene glycol. Bath reaction 3.5h;

[0043] c. After the above reaction is completed, lower the temperature of the oil bath to 70°C, add 0.8116g of 2,2-(bis)methylolpropionic acid to the reaction system, and continue the reaction for 3h;

[0044] d. After the above reaction is completed, add 10 mL of butanone treated with molecular sieves to the reaction system.

[0045] (2) Pretreatment of wool fabric

[0046] e. Take 12×16cm wool fabric;

[0047] f. Ultrasonic cleaning of the woole...

Embodiment 3

[0053] A finishing method for making wool fabrics have an anti-felting function, the specific steps are as follows:

[0054] (1) Synthesis of polyurethane prepolymer

[0055] a. Dry polytetramethylene glycol, 2,2-(bis)methylol, and molecular sieves in a vacuum oven at 60°C for 12 hours;

[0056] b. In a 250mL three-necked bottle, add 4.8769g of isophorone diisocyanate, 10g of polytetramethylene glycol, and then add dibutyltin dilaurate, the amount of which is 0.1wt% of the amount of polytetramethylene glycol. Bath reaction 3.5h;

[0057] c. After the above reaction is completed, lower the temperature of the oil bath to 70°C, add 0.8116g of 2,2-(bis)methylolpropionic acid to the reaction system, and continue the reaction for 3h;

[0058] d. After the above reaction is completed, add 10 mL of butanone treated with molecular sieves to the reaction system.

[0059] (2) Pretreatment of wool fabric

[0060] e. Take 12×16cm wool fabric;

[0061] f. Ultrasonic cleaning of the woo...

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Abstract

The invention discloses a wool anti-felting arrangement agent and a preparation method and application thereof. The preparation method comprises the following steps of mixing polytetramethylene glycol and isophorone diisocyanate under the catalyzing action of dibutyltin dilaurate to react, and cooling after the reaction time is reached; adding 2,2-dimethylolpropionic acid into a reaction liquid at the temperature, and stirring to react; after reaction is finished, adding butanone filtered by a molecular sieve into a product, and dissolving polyurethane prepolymer. The preparation method has the advantages that a wool fabric is treated by the tri(2-carboxyethyl)phosphor and the polyurethane prepolymer; the clicking reaction of sulfydryl and isocyanate is used as the anti-felting mechanism; by adopting the anti-felting treatment type of combining subtraction treatment and addition treatment, the felting rate of the wool fabric is reduced; the organic chloride is not produced in the process, the treated fabric has good durability, the technology condition is mild, and the reaction time is short.

Description

technical field [0001] The invention relates to a wool anti-felting finishing agent and its preparation method and application, in particular to a click reaction between a polyurethane prepolymer with an isocyanate group at the end and a mercapto group on wool, so that the polyurethane prepolymer is grafted onto the wool The invention relates to a method for endowing wool with excellent anti-felting ability, and belongs to the application technical field of dyeing and finishing processing of wool fabrics in the wool textile industry. Background technique [0002] As a natural fiber, wool has many excellent properties, such as good thermal performance, soft feel and soft luster. Due to consumers' pursuit of softness, comfort and easy care in recent years, easy-care wool textiles are very popular in the market . The most important aspect of easy care wool textiles is the ability to prevent felting during machine washing. The outer layer of wool is covered by the scale layer,...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/568D06M13/282C08G18/75C08G18/66C08G18/48C08G18/34D06M101/12
Inventor 俞丹飞中琳王炜
Owner DONGHUA UNIV
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