Hyperbranched polyester hot-melt-type polyurethane adhesive for weaving and preparation method thereof

A technology of polyurethane adhesive and hyperbranched polyester, which is applied in the direction of polyurea/polyurethane adhesive, adhesive type, non-polymer adhesive additive, etc., can solve the problems of rare research and achieve improvement The degree of branching, good adhesion, and the effect of increasing adhesion performance

Inactive Publication Date: 2018-05-29
黄子昕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Known from above-mentioned prior art, utilize hyperbranched polyester to polyurethane modification and can significantly improve the mechanical property and the water resistance of polyurethane adhesive, but the research on the hot-melt polyurethane adhesive aspect of modification with hyperbranched polyether is not at present rare

Method used

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  • Hyperbranched polyester hot-melt-type polyurethane adhesive for weaving and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preheat the reactor to 50°C, after drying, put 39.7g of 4,4'-diphenylmethane diisocyanate and 22.9g of polyether GE-220A into it by vacuum, and then control the temperature at 60°C for 3h under vacuum. Rapidly lower the temperature to 55°C, put in 27.3g of polyether GE-204 and 6.7g of highly branched polyester polyol SOVERMOL1080 by vacuum, and then continue the reaction under vacuum for 2h. Adding 3.4g mass ratio after the completion of the reaction is a silane coupling agent and a light stabilizer of 1:1, stops stirring, and removes bubbles in a vacuum to obtain hyperbranched polyester hot-melt polyurethane adhesive for textiles.

Embodiment 2

[0028] The reactor was preheated to 50°C, and after drying, 38.3g of 4,4'-diphenylmethane diisocyanate and 25.6g of polyether GE-210 were put in by vacuum, and then the temperature was controlled at 80°C for 3 hours under vacuum. The temperature was rapidly lowered to 55°C, and 25.6g of polyether GE-204 and 7.8g of highly branched polyester polyol SOVERMOL760 were put in by vacuum, and then the reaction was continued for 3h under vacuum. After the reaction, add 2.7g of silane coupling agent and light stabilizer with a mass ratio of 1:0.7, stop stirring, and vacuum remove air bubbles to obtain hyperbranched polyester hot-melt polyurethane adhesive for textile.

Embodiment 3

[0030]Preheat the reactor to 50°C. After drying, put 29.8g of 4,4'-diphenylmethane diisocyanate and 30.7g of polyether GE-204 into it by vacuum, and then control the temperature at 70°C for 3h under vacuum. Rapidly lower the temperature to 55°C, put in 30.7g of polyether GE-210 and 5.7g of highly branched polyester polyol SOVERMOL1092 by vacuum, and then continue the reaction under vacuum for 2.5h. Adding 3.1g mass ratio after completion of the reaction is a silane coupling agent and a light stabilizer of 1:0.6, stops stirring, and removes air bubbles in a vacuum to obtain a hyperbranched polyester hot-melt polyurethane adhesive for textiles.

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Abstract

The invention discloses a hyperbranched polyester hot-melt-type polyurethane adhesive for weaving and a preparation method thereof. The hyperbranched polyester hot-melt-type polyurethane adhesive comprises polyether polyol, hyperbranched polyester polyol, MDI and an additive. The preparation method comprises preheating hyperbranched polyester polyol at 100-150 DEG C until melting to obtain hyperbranched polyester polyol pre-melt, checking the hermeticity of a reactor, removing water through replacing with nitrogen gas, carrying out preheating to 50 DEG C, orderly adding MDI and polyether polyol into the reactor, carrying out stirring in vacuum under control of a jacket temperature to 60-80 DEG C for a reaction for 1-3h, fast cooling the reaction system to 55 DEG C to obtain a polyurethaneprepolymer, orderly adding polyester polyol and the hyperbranched polyester polyol pre-melt into the polyurethane prepolymer in vacuum, heating the mixture to 60-80 DEG C, carrying out stirring for areaction for 1-3h, breaking vacuum after the reaction, and removing air bubbles to obtain the hyperbranched polyester hot-melt-type polyurethane adhesive for weaving.

Description

technical field [0001] The invention relates to the technical field of textile polyurethane adhesives, in particular to a hyperbranched polyester hot-melt polyurethane adhesive for textiles and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy, the textile industry is constantly innovating and reforming to meet people's growing pursuit of quality clothing. Adhesives are gradually replacing the role of needles and threads in textile and garment processing because of their strong adhesion. Water-based polyurethane is a binary colloidal system in which water is used as a dispersion medium. The emulsion contains a small amount or no organic solvent, and there are a large number of carbamate groups (-NHCOO-) on its main chain. Water-based polyurethane consists of flexible chain segments The rigid segment is composed of isocyanate and chain extender with strong polarity and high cohesive energy, and the soft segment i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06C09J11/06C08G18/76C08G18/48C08G18/10C08G18/42
CPCC08G18/10C08G18/4018C08G18/48C08G18/7671C08G2170/20C08L2201/08C08L2205/02C09J11/06C09J175/08C08L75/06C08K5/54C08G18/40C08G18/42
Inventor 黄子昕
Owner 黄子昕
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