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Application of a Hyperbranched Dyeing Auxiliary in Improving the Dyeability of Superfine Fiber Polyurethane Synthetic Leather

A technology of hyperbranched polymer and ultrafine fiber, which is applied in the direction of dyeing, textile and paper making, etc., to achieve the effect of improving uneven dyeing, simple synthesis process and excellent performance

Inactive Publication Date: 2018-08-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems that microfiber synthetic leather is not easily dyed, uneven dyeing and poor color fastness, the invention provides a hyperbranched polymer for improving the dyeing of microfiber synthetic leather

Method used

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  • Application of a Hyperbranched Dyeing Auxiliary in Improving the Dyeability of Superfine Fiber Polyurethane Synthetic Leather
  • Application of a Hyperbranched Dyeing Auxiliary in Improving the Dyeability of Superfine Fiber Polyurethane Synthetic Leather
  • Application of a Hyperbranched Dyeing Auxiliary in Improving the Dyeability of Superfine Fiber Polyurethane Synthetic Leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add diethanolamine into a three-necked flask with a magnetic stirrer, then dissolve succinic anhydride with an appropriate amount of DMAc; then Slowly add it dropwise into the three-necked flask containing diethanolamine, stir while adding dropwise, finish adding dropwise in 1h-1.5h, then react at room temperature for 3h-5h, and the reaction product is AB 2 type monomer. Add 180 mL of toluene (toluene is a water-carrying agent) to the above system first, then add 20.126 g (0.15 mol) of trimethylolpropane as a nuclear molecule, and add 0.500 g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , there is reflux in the spherical condenser. Heat preservation reaction for 7 h-8 h to obtain a hyperbranched polymer solution with a hydroxyl group at the end.

[0033] (2) Weigh 90.063g (0.90mol) of succinic anhydride and 0.500g of p-toluenesulfonic acid, fir...

Embodiment approach 2

[0036] (1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add diethanolamine into a three-necked flask with a magnetic stirrer, then dissolve succinic anhydride with an appropriate amount of DMAc; then Slowly add it dropwise into the three-necked flask containing diethanolamine, stir while adding dropwise, finish adding dropwise in 1h-1.5h, then react at room temperature for 3h-5h, and the reaction product is AB 2 type monomer. Add 180 mL of toluene (toluene is a water-carrying agent) to the above system first, then add 6.709g (0.05mol) trimethylolpropane as a nuclear molecule, and add 0.500g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , there is reflux in the spherical condenser. Heat preservation reaction for 7 h-8 h to obtain a hyperbranched polymer solution with a hydroxyl group at the end.

[0037] (2) Weigh 60.042g (0.60mol) of succinic anhydride and 0.5g of p-toluenesulfonic acid, first add p-...

Embodiment approach 3

[0040] (1) Weigh 45.032g (0.45mol) of succinic anhydride and 47.313g (0.45mol) of diethanolamine, first add diethanolamine into a three-necked flask with a magnetic stirrer, then dissolve succinic anhydride with an appropriate amount of DMAc; then Slowly add it dropwise into the three-necked flask containing diethanolamine, stir while adding dropwise, finish adding dropwise in 1h-1.5h, then react at room temperature for 3h-5h, and the reaction product is AB 2 type monomer. In the above system, first add 180 mL of toluene (toluene is a water-carrying agent), then add 2.952 g (0.022 mol) of trimethylolpropane as a nuclear molecule, and add 0.500 g of p-toluenesulfonic acid as a catalyst; then start heating until boiling , there is reflux in the spherical condenser. Heat preservation reaction for 7 h-8 h to obtain a hyperbranched polymer solution with a hydroxyl group at the end.

[0041] (2) Weigh 53.037g (0.53mol) of succinic anhydride and 0.5g of p-toluenesulfonic acid, firs...

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Abstract

The invention relates to the field of superfine-fiber polyurethane synthetic leather, in particular to application of a hyperbranched dyeing assistant to the increasing of the dyeability of superfine-fiber polyurethane synthetic leather.Hyperbranched polymer with terminal hydroxyl is synthesized first, then succinic anhydride modification is used to introduce carboxyl to the terminal of the hyperbranched polymer so as to synthesize hyperbranched polymer with terminal carboxyl.The hyperbranched polymer with terminal carboxyl is applied to the field of polyurethane dyeing assistants and is good in dyeing assisting effect, good in stability and lasting in effect, the synthesizing process of the hyperbranched polymer with terminal carboxyl is simple, industrialized synthesizing of the hyperbranched polymer with terminal carboxyl can be achieved easily, and the hyperbranched polymer with terminal carboxyl is a good polyurethane synthetic leather dyeing assistant with excellent performance.

Description

[0001] The invention relates to the technical field of ultrafine fiber polyurethane synthetic leather, in particular to a hyperbranched dyeing auxiliary for improving the dyeability of ultrafine fiber polyurethane synthetic leather, and to a preparation method thereof. Background technique [0002] Natural leather products have the advantages of good water vapor permeability and strong moisture absorption, which meet the needs of people's clothing and have always been loved by people. However, due to its limited resources, it is necessary to develop synthetic leather with excellent performance. Research at home and abroad in recent years has shown that microfiber synthetic leather can be used as the most ideal material to replace natural leather. [0003] Microfiber synthetic leather is obtained by impregnating polyurethane with superfine fiber non-woven fabric with three-dimensional network structure as reinforcement material. Microfiber synthetic leather is comparable to na...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52D06P3/24C08G83/00
CPCC08G83/005D06P1/5264D06P3/246
Inventor 寿崇琦李培王德卫贾海燕王傅巍
Owner UNIV OF JINAN
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