Preparation method of polyurethane modified organic silicon multipolymer fabric softening agent

A multi-component copolymer and polyurethane modification technology, which is applied in the direction of improved hand feeling fibers, textiles and papermaking, fiber treatment, etc., can solve the problems of fabric oil spots, amino silicone oil softener yellowing, etc., achieve good durability, improve affinity Water performance, the effect of improving the hygroscopicity of wearing

Active Publication Date: 2014-07-30
佛山市澳棉纺织有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of a polyurethane-modified organosilicon multi-polymer fabric softener, which solves the problem that the amino silicone oil softener is prone to yellowing, easy to break and form oil spots on the fabric

Method used

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  • Preparation method of polyurethane modified organic silicon multipolymer fabric softening agent

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preparation example Construction

[0025] A kind of preparation method of polyurethane modified organosilicon multiple copolymer fabric softener of the present invention, specifically comprises the following steps: specifically comprises the following steps:

[0026] Step 1: Prepare Polyurethane Prepolymer

[0027] Carry out vacuum drying of polyethylene glycol 2000 (PEG2000), the vacuum drying temperature is 110-120°C, the vacuum degree is 0.08-0.09MPa, and the time is 2-4h. After vacuum drying, the temperature is lowered to 45-50°C. Add the cooled PEG2000 into the flask, and add isophorone diisocyanate (IPDI) and catalyst dibutyltin dilaurate to the flask, the molar ratio of IPDI to PEG2000 is 1.2~1.8:1, dibutyl dilaurate The amount of acid tin used is 1 / 2000-1 / 1000 of the sum of the mass of PEG2000 and IPDI, and then the temperature is raised to 60-80°C and reacted for 1-4 hours to obtain a polyurethane prepolymer;

[0028] Step 2: Preparation of alkoxysilicone oil

[0029] Add di-n-butylamine and epoxy do...

Embodiment 1

[0038] Step 1: Prepare Polyurethane Prepolymer

[0039] Vacuum-dry PEG2000 at a temperature of 120°C, a vacuum degree of 0.08MPa, and a time of 2 hours. After vacuum drying, the temperature is lowered to 50°C. Take 50g of PEG2000 that has been vacuum-dried and cooled and put it into a flask, and add 10g of it to the flask IPDI (the molar ratio of IPDI to PEG2000 is 1.8:1) and 0.03g of catalyst dibutyltin dilaurate, then heated up to 70°C, reacted for 3h, and cooled after the reaction to obtain a polyurethane prepolymer;

[0040] Step 2: Preparation of alkoxysilicone oil

[0041] According to the molar ratio of 1:1, add 6.4g of di-n-butylamine and 9g of epoxy double head into the flask, raise the temperature to 80°C for 4h; then add 90g of D 4 (D 4 The mass ratio to the epoxy double head is 10:1) and 0.09g catalyst tetramethylammonium hydroxide, the temperature is raised to 120°C for 3 hours, and the temperature is lowered after the reaction to obtain alkoxysilicone oil;

[...

Embodiment 2

[0047] Step 1: Prepare Polyurethane Prepolymer

[0048]The PEG2000 was vacuum-dried at a temperature of 110°C and a vacuum degree of 0.09MPa for 4 hours. After vacuum drying, the temperature was lowered to 50°C. 50 g of PEG2000 that had been vacuum-dried and cooled was added to the flask, and 6.666 g IPDI (the molar ratio of IPDI to PEG2000 is 1.2:1) and 0.0453g catalyst dibutyltin dilaurate, then heated up to 60°C, reacted for 4h, and cooled after the reaction to obtain a polyurethane prepolymer;

[0049] Step 2: Preparation of alkoxysilicone oil

[0050] According to the molar ratio of 1:1, add 6.4g of di-n-butylamine and 9g of epoxy double head into the flask, raise the temperature to 60°C for 6h; then add 45g of D 4 (D 4 The mass ratio to the epoxy double head is 5:1) and 0.005g catalyst tetramethylammonium hydroxide, the temperature is raised to 110°C for 4 hours, and the temperature is lowered after the reaction to obtain the alkoxysilicone oil;

[0051] Step 3: Prepa...

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Abstract

The invention discloses a preparation method of a polyurethane modified organic silicon multipolymer fabric softening agent. The preparation method comprises the following steps: firstly preparing a polyurethane prepolymer by using polyethylene glycol 2000 and isophorone diisocyanate; then preparing alkylhydroxyl-containing silicone oil by using di-n-butyl amine, epoxy 1,3-bis(3-glycidoxypropyl)-1,1,3,3-tetramethyldisiloxane and octamethyl cyclotetrasiloxane; reacting the polyurethane prepolymer with the alkylhydroxyl-containing silicone oil so as to obtain a polyurethane organic silicon multipolymer; and finally adding deionized water, and emulsifying so as to obtain the polyurethane modified organic silicon multipolymer fabric softening agent. The preparation method of the polyurethane modified organic silicon multipolymer fabric softening agent has the beneficial effects that urethane groups and urethane are introduced into organic silicon and serve as hard chain segments for generation of physical crosslinking, meanwhile, polyether is introduced and serves as a hydrophilic chain segment, the problem that as an amino silicon oil softening agent is easy to yellow and demulsify, oil patches are formed on fabrics, is solved, the hydrophilic performance of the fabrics subjected to soft finish is improved, the wearing hygroscopicity of the fabrics is improved, and the durability of the fabrics is good.

Description

technical field [0001] The invention belongs to the technical field of preparation of textile auxiliary agents, and in particular relates to a preparation method of polyurethane-modified organosilicon multi-polymer copolymer fabric softener. Background technique [0002] Polydimethylsiloxane is a fabric softener with excellent performance. Due to its good molecular flexibility and rich methyl content, it can form a methyl covering layer on the fiber surface, thereby reducing the movement between fibers Friction coefficient, to achieve a very good soft effect. However, because it does not have a strong bond with the fiber, it only binds to the fiber through a limited number of van der Waals forces and hydrogen bonds. At the same time, because there are no cross-linkable groups in the molecule, it cannot form a film on the surface of the fiber alone, and its fastness is relatively low. Difference. In order to solve these problems, many improved silicone products have been de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/48C08G18/61C08G18/10D06M15/653
CPCC08G18/10C08G18/4833C08G18/755C08G77/16D06M15/653D06M2200/50C08G18/61
Inventor 贺江平闵欣崔妍蕾
Owner 佛山市澳棉纺织有限公司
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