Cationic waterborne polyurethane resin for wallpaper glue

A water-based polyurethane and cationic technology, applied in the field of compositions, can solve problems such as being unsuitable for large-scale industrial production, complex production processes, and great human injury, and achieve the effects of excellent physical and chemical properties, simple construction process, and reduced construction procedures.

Inactive Publication Date: 2016-02-17
LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Every 400 grams of transparent glue needs to add 6 grams of formaldehyde. Even in the case of good air circulation, it needs to be released for more than 12 months. The released formaldehyde is harmful to the human body.
The second type is mainly glutinous rice glue. Because the main component of glutinous rice glue is starch, the initial adhesion is not strong, and there are problems of mold and resistance to hydrolysis.
Although this product has high cohesiveness, strong adaptability, good stability, non-toxic and tasteless, its production process is complicated and it is not suitable for large-scale industrial production.

Method used

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  • Cationic waterborne polyurethane resin for wallpaper glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 A cationic water-based polyurethane resin for wallpaper glue, the water-based polyurethane resin includes the following raw materials in parts by weight: polyol 70g; polyisocyanate 50g; first chain extender 10g; second chain extender 3g; salt forming Dose 2.5g.

[0027] Among them: polyol refers to polycaprolactone polyol with a molecular weight of 1000~3000. The polyisocyanate is toluene diisocyanate. The first chain extender refers to ethylene glycol. The second chain extender refers to diethanolamine. The salt forming agent refers to lactic acid.

[0028] The preparation method of the cationic water-based polyurethane resin for wallpaper glue, comprises the following steps:

[0029] (1) Weighing according to the proportion;

[0030] ⑵Heat the polyol to 100℃~110℃ for dehydration for 0.5~1.5h, then cool down to 45~55℃, then add polyisocyanate, raise the temperature to 85~95℃, and keep it warm at this temperature for 1.5~2.5h; after that Cool down to ...

Embodiment 2

[0033] Embodiment 2 A cationic water-based polyurethane resin for wallpaper glue, the water-based polyurethane resin includes the following raw materials in parts by weight: polyol 100g; polyisocyanate 90g; first chain extender 30g; second chain extender 18g; salt forming Dose 7.26g.

[0034] Among them: polyol refers to polycarbonate polyol with a molecular weight of 1000~3000. Polyisocyanate refers to isophorone diisocyanate. The first chain extender refers to diethylene glycol. The second chain extender refers to triethanolamine. The salt-forming agent refers to glacial acetic acid.

[0035] The preparation method of the cationic water-based polyurethane resin for wallpaper glue is the same as in Example 1.

Embodiment 3

[0036] Embodiment 3 A cationic water-based polyurethane resin for wallpaper glue, the water-based polyurethane resin includes the following raw materials in parts by weight: polyol 85g; polyisocyanate 70g; first chain extender 15g; second chain extender 10.5g; Salt 6.5g.

[0037] Among them: polyol refers to polytetrahydrofuran ether polyol with a molecular weight of 1000~3000. Polyisocyanate refers to diphenylmethane diisocyanate. The first chain extender refers to 1,4-butanediol. The second chain extender refers to N-methyldiethanolamine. The salt forming agent refers to glycolic acid.

[0038] The preparation method of the cationic water-based polyurethane resin for wallpaper glue is the same as in Example 1.

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Abstract

The invention relates to cationic waterborne polyurethane resin for wallpaper glue. The waterborne polyurethane resin is prepared from, by weight, 70-100 parts of polyhydric alcohols, 50-90 parts of polyisocyanates, 3-30 parts of first chain extender, 3-18 parts of second chain extender and 2.5-8 parts of salt-forming agent. The invention further discloses a preparation method of the cationic waterborne polyurethane resin. The cationic waterborne polyurethane resin is non-toxic, good in performance and simple in preparation method and construction process.

Description

technical field [0001] The invention relates to the field of compositions, in particular to a cationic waterborne polyurethane resin used for wallpaper adhesives. Background technique [0002] There are two types of traditional wallpaper adhesives. The first is glue + glue powder, which is a polyvinyl acetal technology born in the 1980s. The main components are water, polyvinyl alcohol and formaldehyde. Every 400 grams of transparent glue needs to add 6 grams of formaldehyde. Even in the case of good air circulation, it needs to be released for more than 12 months. The released formaldehyde is more harmful to the human body. The second type is mainly glutinous rice glue. Since the main component of glutinous rice glue is starch, the initial adhesion is not strong, and there are problems of mold and resistance to hydrolysis. For example, the invention patent with the domestic application number 201210528813.9 discloses a sulfoethyl-carboxymethyl-crosslinked starch-based wall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/08C09J175/04C09J175/14C08G18/66C08G18/48C08G18/44C08G18/42C08G18/69
Inventor 汪飞戴家兵李维虎朱有奎赵曦
Owner LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD
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