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Synthesis method of silicone fluoride-free water-proofing agent modified with polyurethane and acrylic acid and water-proofing agent

A technology of polyurethane acrylic and fluorine-free water repellent, which is applied in the direction of improved hand-feeling fibers, liquid-repelling fibers, textiles and papermaking, etc. It can solve problems such as hardening and inconspicuous improvement in durability, and achieve selectivity improvement, Excellent waterproof effect, good hand feeling effect

Active Publication Date: 2019-11-15
DYMATIC CHEM
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The functional monomer forms a short side chain with a reactive group on the main chain of the waterproofing agent, and the reaction of the reactive group forms a strong constraint on the main chain, forming a hard hand feeling; Resistance, many reactive groups are self-crosslinked, do not form a strong bond with the fabric, and the durability improvement is not obvious

Method used

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  • Synthesis method of silicone fluoride-free water-proofing agent modified with polyurethane and acrylic acid and water-proofing agent
  • Synthesis method of silicone fluoride-free water-proofing agent modified with polyurethane and acrylic acid and water-proofing agent
  • Synthesis method of silicone fluoride-free water-proofing agent modified with polyurethane and acrylic acid and water-proofing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Synthesis of single-ended aminoalkyl silicone: (1) 6.41 parts (parts by mass, the same below) of n-butyllithium and 70 parts of toluene are prepared into a solution; 289.2 parts of hexamethylcyclotrisiloxane are added and dissolved in an equal mass of toluene Then add 290 parts of tetrahydrofuran, and react for 6 hours at 30°C; then add 10 parts of dimethyl monochlorosilane, and react for 1 hour at 30°C; filter, and remove the low boilers under reduced pressure to obtain mono Hydrogen-terminated polydimethylsiloxane, yield 98%; (2) 500 parts of toluene, 9.2 parts of allyl chloride, 0.01 part of isopropanol solution of chloroplatinic acid (chloroplatinic acid concentration 2%), heat up 100 ℃, add 300.8 parts of single-ended hydrogen polydimethylsiloxane dropwise; after adding, react at 100℃ for 8 hours; remove low boilers and unreacted substances under reduced pressure to obtain chloropropyl-terminated polysiloxane with a yield of 96% (3) 308.6 parts of chloropropyl-term...

Embodiment 2

[0040] Embodiment 2 and embodiment 3 all are on the basis of embodiment 1 to make fine-tuning to formula or process, and the place that two embodiments differ from embodiment 1 are listed below in the form of attached table:

[0041]

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Abstract

The invention provides a synthesis method of a silicone fluoride-free water-proofing agent modified with polyurethane and acrylic acid. The silicone fluoride-free water-proofing agent modified with the polyurethane and the acrylic acid is obtained through the steps of synthesis of single-end aminoalkylsilicone and double-end hydroxyalkyl silicone, synthesis of a polyurethane-modified silicon macromonomer, free radical emulsion polymerization of the macromonomer, and the like, a special molecular structure is adopted, compared with the prior art, the silicone fluoride-free water-proofing agentmodified with the polyurethane and the acrylic acid has a better water-proof effect and a good hand feeling, and the laundering durability is more excellent.

Description

technical field [0001] The invention relates to the technical field of textile auxiliaries, more specifically, relates to a method for synthesizing a polyurethane acrylic acid modified organic silicon fluorine-free waterproofing agent and the waterproofing agent produced according to the method. Background technique [0002] Water repellants can impart hydrophobic properties to the surface of textiles. Fluorine-containing waterproofing agents are currently the most used on the market. Fluorine-containing water repellents are expensive, and the fluorine-containing raw materials used in the production consume high energy consumption and heavy pollution, and the fluorine-containing substances contained in them are difficult to degrade and have bioaccumulation toxicity. The use of fluorine-free additives is a development trend. [0003] In recent years, with the improvement of living standards and the upgrading of the country's industries, the textile printing and dyeing indus...

Claims

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Application Information

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IPC IPC(8): C08G18/79C08G18/67C08G18/73C08G18/61D06M15/564D06M15/653
CPCC08G18/61C08G18/672C08G18/73C08G18/792D06M15/564D06M15/653D06M2200/12D06M2200/50
Inventor 刘军黄尚东陈祖芬
Owner DYMATIC CHEM
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