Water-soluble polymer and application thereof in composite spinning

A water-soluble polymer and polymer technology, applied in the direction of conjugated synthetic polymer artificial filament, chemical post-treatment of synthetic polymer artificial filament, single-component polyamide artificial filament, etc., can solve flocculation, insufficient and other problems, to achieve the effect of accurate introduction, low water quality dependence, and excellent solubility

Active Publication Date: 2022-01-04
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on all-water-based microfiber synthetic leather is still in its infancy, especially the research on water-soluble polymer materials used in superfiber leather sea-island fibers is not enough. Using conventional water-soluble / alkali-soluble polymers such as sulfonate When salt-type water-soluble polyester is used as the sea component of sea-island fibers to prepare water-reducing superfibers, the problem of water solubility is still a technical bottleneck to be solved in this field.
[0004] The main problems of the prior art are: the existing sulfonate water-soluble polyester is basically alkali-soluble or needs high-purity water to dissolve, otherwise it will problems such as flocculation

Method used

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  • Water-soluble polymer and application thereof in composite spinning
  • Water-soluble polymer and application thereof in composite spinning
  • Water-soluble polymer and application thereof in composite spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A preparation method of a water-soluble polymer, the steps are as follows:

[0059] (1) put the aliphatic dibasic acid (succinic acid) and the aliphatic dibasic amine (hexamethylene diamine) in the molar ratio of 2.2:1 into the reactor, add deionized water as the solvent simultaneously, at a temperature of 85° C. and Under the condition of pressure of 0.1MPa, react until the pH value of the solution no longer rises, and the reaction generates a V-structure amide compound containing double-end carboxyl groups. After the reaction is completed, the excess unreacted aliphatic dibasic acid is removed, and the product is purified;

[0060] (2) put the aliphatic dibasic acid (succinic acid) and bishydroxy salt (bis(2-hydroxyethyl) dimethyl ammonium chloride) of mol ratio 2.2:1 into another reactor, add The tetra-n-butyl titanate of total feeding amount 300ppm is reacted to no distillate in the system under the condition that temperature is 160 ℃ and pressure is 60kPa, reaction...

Embodiment 2

[0076] A preparation method of a water-soluble polymer, the steps are as follows:

[0077] (1) put the aliphatic dibasic acid (oxalic acid) and aliphatic dibasic amine (butanediamine) in the molar ratio of 2.3:1 into the reactor, add deionized water as the solvent simultaneously, at a temperature of 90° C. and Under the condition of pressure of 0.1MPa, react until the pH value of the solution no longer rises, and the reaction generates a V-structure amide compound containing double-end carboxyl groups. After the reaction is completed, the excess unreacted aliphatic dibasic acid is removed, and the product is purified;

[0078] (2) put the aliphatic dibasic acid (oxalic acid) and bishydroxy salt (bis (2-hydroxyethyl) methyl ethyl ammonium chloride) of mol ratio 2.3:1 into another reactor, add simultaneously The tetra-n-butyl titanate that accounts for 350ppm of the total feeding amount is reacted to no distillate in the system under the condition that the temperature is 168 ° C...

Embodiment 3

[0086] A preparation method of a water-soluble polymer, the steps are as follows:

[0087] (1) put the aliphatic dibasic acid (glutaric acid) and the aliphatic dibasic amine (ethylenediamine) in the molar ratio of 2.4:1 into the reactor, add deionized water as the solvent simultaneously, at a temperature of 95°C and Under the condition of pressure of 0.1MPa, react until the pH value of the solution no longer rises, and the reaction generates a V-structure amide compound containing double-end carboxyl groups. After the reaction is completed, the excess unreacted aliphatic dibasic acid is removed, and the product is purified;

[0088] (2) put the aliphatic dibasic acid (malonic acid) and bishydroxy salt (bis(2-hydroxyethyl) methylethylammonium bromide) of mol ratio 2.4:1 into another reactor, add simultaneously The tetra-n-butyl titanate that accounts for 400ppm of the total feeding amount is reacted to no distillate in the system under the condition that the temperature is 170 ...

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Abstract

The invention relates to a water-soluble polymer and application thereof in composite spinning. The water-soluble polymer is a polyesteramide polymer, and the molecular chain of the water-soluble polymer comprises a polyester structural unit and a polyamide structural unit. The polyester structural unit comprises a structural unit I composed of aromatic dibasic acid residues and aliphatic dihydric alcohol residues, a structural unit II composed of aliphatic dibasic acid residues and aliphatic dihydric alcohol residues, a structural unit III composed of aliphatic dibasic acid residues and dihydroxy salt residues, and a structural unit IV composed of aromatic dibasic acid residues and dihydroxy salt residues. The polyamide structural unit comprises a structural unit V composed of aliphatic dibasic acid residues and aliphatic diamine residues in a molar ratio of 2: 1. According to the application, a sea-island fiber is prepared by taking the water-soluble polymer as a sea component and a water-resistant meltable polymer as an island component. The water-soluble polymer disclosed by the invention is easily soluble in water and has low requirements on the quality of water for dissolving, so that the problems in the prior art are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of water-soluble polymers, and relates to a water-soluble polyester amide and its application in composite spinning. Background technique [0002] The conventional process for preparing polyurethane microfiber leather often uses solvent-based polyurethane, nylon / polyethylene sea-island fiber non-woven fabrics as raw materials, and obtains polyurethane microfiber leather through steps such as impregnation, coagulation, water washing, and fiber opening. During the coagulation process, it is necessary to use DMF solvent is used for polyurethane curing. During the fiber opening process, toluene needs to be used to dissolve the polyethylene sea phase. Due to the large amount of solvent used in the conventional process, there are problems such as poor environmental protection, complicated solvent extraction, complicated processing flow of polyurethane microfiber leather, high production cost, and low production ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/44C08G63/685D01F8/12D01F8/14D01F11/08D01F6/60
CPCC08G69/44C08G63/6856D01F8/12D01F8/14D01F11/08D01F6/60Y02P70/62
Inventor 徐秋舒陈文生崔燕军唐劲松段伟东
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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