Cationic organosilicon-modified polyurethane emulsion and preparation method thereof

A polyurethane emulsion and cationic technology, which is applied in the field of cationic silicone modified polyurethane emulsion and its preparation, can solve the problems of poor anti-pilling performance, weakened slippage between fibers, loss of textile style, etc. Multi-functional, improved pilling resistance, and the effect of maintaining excellent performance

Inactive Publication Date: 2014-11-05
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the anti-pilling agent resin, by coating a layer of wear-resistant resin film on the surface of the fiber, the slippage between the fibers is weakened, and the fiber end is adhered to the yarn by using the resin, which can effectively improve the resistance of the knitted fabric. Pilling, but the disadvantage of these methods is that the anti-pilling performance of the fabric is poor in durability, and the fabric feels stiff after finishing and loses the original textile style

Method used

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  • Cationic organosilicon-modified polyurethane emulsion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] (1) Synthesis of amino silicone oil: 82.0g of octamethylcyclotetrasiloxane, 17.7g of N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (Nanjing Xuyang Chemical Co., Ltd. The company's commercially available product, the brand name is coupling agent KH-602), 0.6g end-capping agent hexamethyldisiloxane, 0.7g catalyst potassium hydroxide and 4.1g deionized water are added to the reaction vessel and heated to React at 105°C for 6 hours, and the viscous liquid obtained after cooling is the synthesized amino silicone oil.

[0029] (2) Preparation of quaternized modified amino silicone oil: Add 1.1g bromoethane into the reaction vessel, dissolve in ethanol, heat to 75°C, add 100.0g amino silicone oil dropwise while stirring, and continue the reaction for 5 hours , heated up to 80°C, and reacted for another 1.5 hours, and then vacuumed to remove water and ethanol to obtain quaternized modified amino silicone oil.

[0030](3) Synthesis of cationic silicone-modified polyuretha...

Embodiment 2

[0032] The ethyl bromide in the preparation of the quaternized modified amino silicone oil in Example 1 (2) was replaced with 1.0 g of epichlorohydrin, and the amount of other raw materials and operation steps were the same as in Example 1.

Embodiment 3

[0034] Change the amount of quaternized modified amino silicone oil in Example 1 (3) in the synthesis of cationic silicone-modified polyurethane emulsion to 135.0 g of quaternized modified amino silicone oil, and the amount of other raw materials and operating steps are the same as in Example 1 .

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Abstract

The invention relates to a cationic organosilicon-modified polyurethane emulsion and a preparation method. The method comprises the following steps: 1)synthesizing amino silicone oil, placing octamethylcyclotetrasiloxane, N-beta-(aminoethyl)-gamma- aminopropyl methyl dimethoxyl silane, hexamethyldisiloxane, potassium hydroxide and deionized water in a reaction container under the temperature of 100-110 DEG C to prepare the amino silicone oil; 2)adding haloalkane or epoxy alkyl halide, performing quaternization under 50-90 DEG C, removing micromolecule matter to obtained quaternized modified amino silicone oil; and 3)adding the quaternized modified amino silicone oil in the step 2) drop by drop in high molecular weight polyether polyalcohol, cationic glycol chain extender and isophorone diisocyanate prepolymer and reacting under 60-90 DEG C to obtain cationic organosilicon-modified, then adding deionized water to obtain the cationic organosilicon-modified polyurethane emulsion. The product can be used for textile arrangement, and is especially suitable for acrylic fibers fabric, and has good pilling resistance and hand feel.

Description

technical field [0001] The invention relates to a polyurethane emulsion and a preparation method thereof, in particular to a cationic organosilicon-modified polyurethane emulsion and a preparation method thereof. Background technique [0002] During the process of wearing and washing, the fabric is subjected to continuous external forces such as friction, rubbing and washing. Before obvious damage occurs, the fabric is prone to pilling. The problem of pilling on the surface of the fabric generally occurs on natural fiber and chemical fiber fabrics, but chemical fibers are more obvious and prominent, especially acrylic fabrics. The pilling of the fabric not only deteriorates the appearance of the fabric, but also affects the aesthetics of the garment, and also affects its fastness to wearing. [0003] In order to solve the problem of pilling of fabrics, people have carried out a lot of research and exploration work on polymerization modification, adjustment of spinning proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G18/75C08G18/66C08G18/48C08G18/32C08G77/38C08G77/26D06M15/643
CPCC08G81/00C08G18/10C08G18/4825C08G18/4833C08G18/6688C08G18/755C08G77/26C08G77/385D06M15/653C08G18/3275
Inventor 俞成丙陆丁荣杨丹董红霞胡季华李秦龙
Owner SHANGHAI UNIV
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