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Waterborne polyurethane extinction resin

A technology of water-based polyurethane and matting resin, which is applied in the field of water-based polyurethane matting resin, can solve the problems of uneven matting coating, affecting product performance, and shedding of matting coating, so as to achieve excellent matting performance and avoid the effect of uneven matting coating

Inactive Publication Date: 2017-08-11
佛山市尚峰高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the water-based polyurethane resin is subjected to matting treatment, problems such as uneven matting coating or shedding of the matting coating often occur, seriously affecting product performance

Method used

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  • Waterborne polyurethane extinction resin
  • Waterborne polyurethane extinction resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A water-based polyurethane matting resin, specifically prepared from the following components in parts by mass: 10 parts of polyisocyanate, 10 parts of polyester polyol, 0.3 part of DMPA, 0.8 part of sodium sulfonate, and 1.5 parts of hexamethylenediamine , 35 parts of glycol, 0.02 part of catalyst, 5 parts of dimethylethanolamine, 3 parts of N-methylpyrrolidone solvent, 200 parts of deionized water; its preparation method is specifically the following steps:

[0017] (1) Dry the polyester polyol and diol with hot air at 55°C for 15 minutes, then vacuum dehydrate at 80°C for 45 minutes, with a vacuum degree of 0.04MPa, so that the moisture content is less than 0.02%;

[0018] (2) Put the material obtained in step (1) into a reaction kettle, heat to 70°C, add the diisocyanate and 1 / 2 of the DMPA, keep warm for 15 minutes, then heat up to 85°C, and keep warm for 110 minutes , to make it fully react, during which the catalyst is added every 40 minutes, the first addition i...

Embodiment 2

[0023] A water-based polyurethane matting resin, specifically prepared by the following components in parts by mass: 18 parts of polyisocyanate, 30 parts of polyester polyol, 1.5 parts of DMPA, 2.4 parts of sodium sulfonate, and 2.5 parts of hexamethylenediamine , 60 parts of glycol, 0.05 part of catalyst, 7 parts of dimethylethanolamine, 9 parts of N-methylpyrrolidone solvent, 280 parts of deionized water; its preparation method is specifically the following steps:

[0024] (1) Dry the polyester polyol and diol with hot air at 65°C for 20 minutes, then vacuum dehydrate at 140°C for 60 minutes, with a vacuum degree of 0.07MPa, so that the moisture content is less than 0.02%;

[0025] (2) Put the material obtained in step (1) into the reaction kettle, heat it to 75°C, add the diisocyanate and 1 / 2 of the DMPA, keep it warm for 25 minutes, then raise the temperature to 90°C, and keep it warm for 130 minutes , to make it fully react, during which the catalyst is added every 40 min...

Embodiment 3

[0030] A water-based polyurethane matting resin, in parts by mass, specifically prepared from the following components: 15 parts of polyisocyanate, 20 parts of polyester polyol, 0.8 part of DMPA, 1.6 parts of sodium sulfonate, and 2.1 parts of hexamethylenediamine , 48 parts of glycol, 0.04 part of catalyst, 6 parts of dimethylethanolamine, 7 parts of N-methylpyrrolidone solvent, 250 parts of deionized water; its preparation method is specifically the following steps:

[0031] (1) Dry the polyester polyol and diol with hot air at 60°C for 18 minutes, then vacuum dehydrate at 120°C for 50 minutes, with a vacuum degree of 0.06MPa, so that the moisture content is less than 0.02%;

[0032] (2) Put the material obtained in step (1) into the reaction kettle, heat it to 73°C, add the diisocyanate and 1 / 2 of the DMPA, keep it warm for 20 minutes, then raise the temperature to 88°C, and keep it warm for 120 minutes , to make it fully react, during which the catalyst is added every 40 m...

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Abstract

The invention relates to a waterborne polyurethane extinction resin. The waterborne polyurethane extinction resin is prepared from, by mass, 10-18 parts of polyisocyanates, 10-30 parts of polyester polyol, 0.3-1.5 parts of DMPA, 0.8-2.4 parts of sodium sulfonate, 1.5-2.5 parts of hexamethylenediamine, 35-60 parts of dihydric alcohol, 0.02-0.05 part of catalyst, 5-7 parts of dimethylethanolamine, 3-9 parts of N-methyl pyrrolidone, and 200-280 parts of deionized water. Compared with a waterborne polyurethane resin coated with an extinction layer in the prior art, the waterborne polyurethane extinction resin has the same excellent extinction performance through experiment; meanwhile, problems of uneven or dropped extinction coating and others in the prior art are avoided; therefore, the waterborne polyurethane extinction resin is more competitive.

Description

technical field [0001] The invention belongs to the technical field of polymer compounds, and in particular relates to a water-based polyurethane matting resin. Background technique [0002] Polyurethane (PU) refers to the abbreviation of high polymer polyurethane containing a large number of carbamate groups on the main chain. Because of its excellent physical and chemical properties, it has been widely used in the synthetic leather and artificial leather industries. It is a multifunctional polymer material. Polyurethane resins for synthetic leather are divided into oily polyurethane resins and water-based polyurethane resins. Water-based polyurethane resins are made by dispersing high polymer polyurethane in water. Among the current synthetic leather enterprises, more than 95% still use oily polyurethane resin to make artificial leather and synthetic leather, and only less than 5% of enterprises use water-based polyurethane resin to manufacture synthetic leather on a smal...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/34C08G18/32C08G18/12
CPCC08G18/42C08G18/12C08G18/348C08G18/3228
Inventor 刘欢
Owner 佛山市尚峰高分子科技有限公司
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