Solvent-free genuine leather laminating adhesive and preparation method thereof

A solvent-free, laminating adhesive technology, applied in the direction of adhesive types, adhesives, polyurea/polyurethane adhesives, etc., can solve the problems of reduced use effect, impact of storage life, and overall quality of by-products, etc., to achieve Improved heat resistance, excellent solvent resistance, and improved flexibility

Active Publication Date: 2019-11-26
宿州鹏御源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the document whose publication number is CN108997739A, only the method of blending and heating and curing is used to obtain a collagen fiber-based solvent-free polyurethane composite material with solvent-free polyurethane as the skeleton and collagen fibers running through it, so that a large number of collagen fibers The solid waste is processed, which solves the pollution problem; and compared with the existing solvent-free leather lamination glue and its preparation method, it is still prone to the high reactivity of the NCO group, making its stor...

Method used

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  • Solvent-free genuine leather laminating adhesive and preparation method thereof
  • Solvent-free genuine leather laminating adhesive and preparation method thereof
  • Solvent-free genuine leather laminating adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A solvent-free leather lamination adhesive, which is composed of A component, B component and C component, and A component is composed of diethylene glycol, 1,2-propylene glycol and sebacic acid in a ratio of 3:3:4 The weight percentage composition; B component is made up of xylylene diisocyanate, diphenylmethane diisocyanate and polyether polyol by weight percentage of 3:3:4, and the hydroxyl value of polyether polyol is 112mgKOH / g; C component is composed of 2,6-di-tert-butyl-p-cresol and 3,5-dimethylpyrazole in a weight percentage of 1:1;

[0039] And the weight percentage among A component, B component and C component is 5:8:2.

[0040] A preparation method of solvent-free type leather laminating glue, comprising the steps of:

[0041] Preparation of component A: first add diethylene glycol, 1,2-propanediol and sebacic acid into the stirring tank according to the weight percentage of 3:3:4, and then continuously feed nitrogen into it, and set the temperature at 2 ...

Embodiment 2

[0052] A solvent-free leather laminating glue, the difference from Example 1 is that component A is composed of diethylene glycol, 1,2-propanediol and sebacic acid in a weight percentage of 1:1:2.

[0053] A kind of preparation method of solvent-free type dermis laminating glue, the difference with embodiment 1 is that, the preparation of A component: first add diethylene glycol, 1 , 2-propanediol and sebacic acid.

Embodiment 3

[0055] A solvent-free leather lamination adhesive, the difference from Example 1 is that component C is 2,6-di-tert-butyl-p-cresol.

[0056] A preparation method of a solvent-free leather laminating glue, the difference from Example 1 is that the mixing of component C: first introduce the component B in the dry bottle into the reaction kettle, and then add 2, 6-Di-tert-butyl-p-cresol, and continue to feed nitrogen, and at the same time, introduce and mix the component A in the dry thermostat at 30 degrees for 15 minutes, and finally place it in a dry dust-free tank, To obtain solvent-free leather laminating glue;

[0057] And the application method of the solvent-free leather laminating glue obtained by the preparation method is as follows: all the solvent-free leather laminating glue placed in a dry dust-free tank is applied to the scrubbed and dried leather, and Cover with another scrubbed and dried leather, heat and dry.

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Abstract

The invention discloses a solvent-free genuine leather laminating adhesive and a preparation method thereof. The solvent-free genuine leather laminating adhesive is formed by uniformly mixing a component A, a component B and a component C, and the component A is composed of diethylene glycol, 1,2-propylene glycol and sebacic acid according to a weight percentage ratio of 3:3:4; the component B iscomposed of xylylene diisocyanate, methylene diphenyl diisocyanate and polyether polyol according to a weight percentage ratio of 3:3:4, and the hydroxyl value of the polyether polyol is 112 mgKOH/g;the component C is composed of 2,6-di-tert-butyl-p-cresol and 3,5-dimethylpyrazole according to a weight percentage ratio of 1:1; and a weight percentage ratio of the component A to the component B tothe component C is 5:8:2. The service life of the solvent-free genuine leather laminating adhesive is greatly prolonged, so that the use effect is prevented from being greatly reduced as time goes on; an excellent adhesive effect can be achieved while ensuring the coating flexibility; and the evaporation efficiency of water is greatly improved while a mixed liquid is fully and uniformly mixed.

Description

technical field [0001] The invention relates to the technical field of leather lamination glue, in particular to a solvent-free leather lamination glue and a preparation method thereof. Background technique [0002] During the use of solvent-based leather laminating glue, it is easy to cause environmental and safety problems due to solvent volatilization. With the continuous strengthening of people's environmental protection awareness, solvent-free leather laminating glue has been widely used. [0003] However, in the document whose publication number is CN108997739A, only the method of blending and heating and curing is used to obtain a collagen fiber-based solvent-free polyurethane composite material with solvent-free polyurethane as the skeleton and collagen fibers running through it, so that a large number of collagen fibers The solid waste is processed, which solves the pollution problem; and compared with the existing solvent-free leather lamination glue and its prepar...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J175/08G01N33/00C08G63/672C08G63/78C08G18/42C08G18/48C08G18/80
CPCC08G18/4018C08G18/425C08G18/48C08G18/80C08G63/672C08G63/78C09J175/06C09J175/08G01N33/00
Inventor 徐亮军徐鹏
Owner 宿州鹏御源新材料科技有限公司
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