High solid content two-liquid type adhesive layer polyurethane resin and preparation method thereof

A polyurethane resin, high solids technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve the effect of reducing usage, fine creases, and reducing negative effects

Inactive Publication Date: 2017-05-31
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of high solid content two-component adhesive layer polyurethane resin and preparation method thereof, to solve the technical deficiencies existing in the existing two-component adhesive layer polyurethane resin

Method used

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  • High solid content two-liquid type adhesive layer polyurethane resin and preparation method thereof
  • High solid content two-liquid type adhesive layer polyurethane resin and preparation method thereof
  • High solid content two-liquid type adhesive layer polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials used in this embodiment and their weight are shown in Table 1.

[0027] Table 1

[0028] raw material name Weight: kg kmol Polyethylene adipate glycol butanediol copolyester diol (number average molecular weight 1000) 100 0.1 Poly(Neopentyl Glycol Adipate) Diol (Number Average Molecular Weight 1000) 200 0.2 Toluene diisocyanate 60.09 0.345 blocking agent butanone oxime 7.84 0.09 Solvent DMF 40.88 / Total 408.81 /

[0029] The preparation steps of the high-solid two-component adhesive layer polyurethane resin of the present embodiment are as follows:

[0030] 1), put 100kg polyethylene adipate butanediol copolyester diol, 200kg polyneopentyl adipate diol, 40.88kg dimethylformamide into the reaction kettle, stir evenly at 50°C ;

[0031] 2), put 60.09kg of toluene diisocyanate into the reaction kettle at one time, control the reaction temperature at 65°C, react under normal pressure, use di-n-b...

Embodiment 2

[0034] The raw materials used in this embodiment and their weight are shown in Table 2.

[0035] Table 2

[0036] raw material name Weight: kg kmol Diethylene glycol adipate copolyester diol (number average molecular weight 3000) 210 0.07 Polypropylene oxide ether glycol (number average molecular weight 3000) 105 0.035 Isophorone diisocyanate 33.84 0.1522 Blocking agent 3,5-dimethylpyrazole 9.07 0.0944 Solvent dimethylacetamide 89.48 / Total 447.39 /

[0037] The preparation steps of the high-solid two-component adhesive layer polyurethane resin of the present embodiment are as follows:

[0038] 1), put 210kg polyethylene adipate diethylene glycol copolyester diol, 105kg polypropylene oxide ether diol, 89.48kg dimethylacetamide into the reaction kettle, stir evenly at 60°C;

[0039] 2) Put 33.84kg of isophorone diisocyanate into the reactor at one time, control the reaction temperature at 105°C, react under normal pre...

Embodiment 3

[0042] The raw materials used in this embodiment and their weight are shown in Table 3.

[0043] table 3

[0044]

[0045]

[0046] The preparation steps of the high-solid two-component adhesive layer polyurethane resin of the present embodiment are as follows:

[0047] 1), put 200kg polytetrahydrofuran ether diol, 450kg polymethylpentanediol adipate diol, 100kg dimethylformamide, 39.26kg dimethylacetamide into the reaction kettle, stir evenly at 55°C;

[0048] 2) Put 119.37kg of 4,4'-dicyclohexylmethane diisocyanate into the reactor at one time, control the reaction temperature at 95°C, react under normal pressure, use di-n-butylamine titration to track and detect the content of isocyanate groups, and keep warm until When the content of isocyanate group is constant, lower the temperature to 63°C;

[0049] 3) Add 19.76 kg of phenol into the reaction kettle and react at 82° C. under normal pressure for 30 minutes to obtain the high solid content two-component adhesive l...

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Abstract

The invention discloses high solid content two-liquid type adhesive layer polyurethane resin and a preparation method thereof. The high solid content two-liquid type adhesive layer polyurethane resin is prepared from the following raw materials: polyhydric alcohols, diisocyanate, a sealing agent and a solvent, wherein the polyhydric alcohols comprise a polyhydric alcohol A and a polyhydric alcohol B; the polyhydric alcohol A is selected from polyadipic acid ethylene glycol and butanediol copolyester diol, polyadipic acid diglycol ethylene glycol copolyester diol and polytetrahydrofuranether diol or polytetrahydrofuran ethylene oxide copolyether diol; the polyhydric alcohol B is a polyhydric alcohol which contains a side group and is liquid at 20 DEG C. By using part of polyhydric alcohols which are liquid at normal temperature, polyurethane resin with the solid content of 80-90% is obtained, and the use amount of the solvent is reduced; when synthetic leather is prepared, by adding a marketed polyfunctionality compound which can be reacted with a isocyanate group as a crosslinking agent (such as triethylene tetramine) into the resin, smooth kink marks of the synthesized leather can be realized without changing the existing process.

Description

technical field [0001] The invention relates to a polyurethane resin and a preparation method thereof, in particular to a high solid content two-component adhesive layer polyurethane resin and a preparation method thereof. Background technique [0002] After years of development, microfiber synthetic leather products have reached or even surpassed genuine leather materials in terms of durability, diversity, and air permeability. Therefore, microfiber synthetic leather is considered one of the ideal substitutes for genuine leather. [0003] At present, a large amount of solvents such as dimethylformamide (DMF), toluene, methyl ethyl ketone, and ethyl acetate are used in the production process of microfiber synthetic leather. Although most of these solvents can be recycled, they still have a certain negative impact on the environment. . [0004] In view of this, domestic counterparts have been committed to developing products that can reduce negative environmental impacts. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/48C09J175/08C09J175/06
CPCC08G18/4018C08G18/4202C08G18/4238C08G18/4247C08G18/4825C08G18/4854C09J175/06C09J175/08
Inventor 杨银龙张其斌段伟东赵鸿凯孙向浩杜明兵
Owner HUAFON MICROFIBER SHANGHAI
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