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A kind of preparation method of adhesive coating

A technology for adhesives and coatings, applied in the direction of adhesives, adhesive additives, polyurea/polyurethane coatings, etc., can solve problems such as poor bonding performance, and achieve the effects of easy operation, wide sources, and convenient procurement

Active Publication Date: 2016-05-11
SHENZHEN SHENDA AURORA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect of poor bonding performance of the adhesive coating in the prior art, and provide a preparation method of the adhesive coating with excellent bonding performance

Method used

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  • A kind of preparation method of adhesive coating
  • A kind of preparation method of adhesive coating
  • A kind of preparation method of adhesive coating

Examples

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preparation example Construction

[0034] see figure 1 , figure 1 The step flow chart 100 of the preparation method of the adhesive coating provided by the embodiment of the present invention, from figure 1 Visible in, the preparation method of adhesive coating comprises the following steps:

[0035] Step S1: synthesizing polyurethane hard segment side chains;

[0036] see figure 2 , figure 2 The flow chart of steps for synthesizing polyurethane hard segment side chains provided by the embodiments of the present invention includes the following steps:

[0037] Step S11: dehydrating isophorone diisocyanate until the water content of isophorone diisocyanate is less than or equal to 0.05%;

[0038] Specifically, isophorone diisocyanate (isophoronediisocyanate; IPDI) was depressurized to 15 mmHg and then distilled and dehydrated at 120° C. for 2 hours until the water content was no more than 0.05% before use.

[0039] Step S12: mixing dehydrated isophorone diisocyanate and 36-carbon dihydric alcohol in a ma...

Embodiment 1

[0065] After the IPDI is decompressed to 15mmHg, it is distilled and dehydrated at 120°C for 2 hours until the water content is 0.01% for use; then the dehydrated IPDI and 36-carbon dihydric alcohol are mixed at a mass ratio of 3%:0.5%; the mixed The mixture is placed in a reaction kettle, and a polyurethane catalyst with a mass fraction of 0.01% is added, and the temperature is slowly raised to 65°C. After the temperature is kept at 65°C and the reaction is fully stirred for 3 hours, a composition composed of ethyl acetate and methyl ethyl ketone is added. dilute solvent, adjust the solid content of the components in the above reactants to 30%; continue to stir at 65°C for 0.5h, and then add an ethanol solution with a mass fraction of 0.015%. Under the above conditions, ethanol and the above reactants The isocyanate reacts, and the acid value of the above-mentioned mixed solution is tested after the reaction is complete. When the acid value is half of the IPDI acid value, cool...

Embodiment 2

[0069] After IPDI is decompressed to 15mmHg, it is distilled and dehydrated at 120°C for 2 hours until the water content is 0.05% for use; then the dehydrated IPDI is mixed with 36-carbon dihydric alcohol at a mass ratio of 10%: 3%; after mixing The mixture is placed in a reaction kettle, and a polyurethane catalyst with a mass fraction of 0.06% is added, and the temperature is slowly raised to 85°C. After the temperature is kept at 85°C and the reaction is fully stirred for 3 hours, a composition composed of ethyl acetate and butanone is added. dilute solvent, adjust the solid content of the components in the above reactant to 50%; continue to stir at 85°C for 0.5h, then add 0.06% ethanol, under the above conditions, ethanol and the isocyanate in the above reactant The reaction occurs, and the acid value of the above-mentioned mixed solution is tested after the reaction is complete. When the acid value is half of the IPDI acid value, it is cooled to crystallization to obtain t...

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Abstract

The invention provides a preparation method of an adhesive paint. The method comprises: taking a polyurethane hard segment as a side chain, taking an acrylic acid soft segment as a main chain, mixing the polyurethane hard segments and the acrylic acid soft segment according to a certain mass ratio, then adding various auxiliary-agent filling materials such as a plasticizer, a flexibilizer, a thixotropic agent and a light stabilizer, to finally obtain the adhesive paint for a plastic package gold-stamping film. By using the preparation method of the adhesive paint, the prepared adhesive pain has the advantages of being good in wetability, resistant in high temperature, resistant in rub, tolerant in acid and alkali, tolerant in alcohol, resistant in ultraviolet radiation aging, resistant in yellowing, and good in hot stamping and cutting performances.

Description

【Technical field】 [0001] The invention relates to the technical field of hot stamping, in particular to a method for preparing an adhesive coating. 【Background technique】 [0002] Now there are a variety of hot stamping processing methods on the market, which are commonly used in various commodities. The application range of hot stamping is very wide. In addition to embellishing the cover of books and periodicals, it is also widely used in calendars, annual calendars, greeting cards, product descriptions, etc., especially the surface finishing of packaging and decoration printed matter; hot stamping can not only be used on printed matter, paper It can be carried out on the surface, and can also be carried out on the surface of plastic, leather, cotton cloth, etc. [0003] Adhesive coatings commonly used in hot stamping are polar adhesives such as acrylic adhesives, epoxy adhesives, and polyurethane adhesives. Currently commonly used adhesive coatings have poor ethanol resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D175/04C09D7/12C09J133/12C09J175/04C09J11/04C09J11/06C09J11/08C08G18/75C08F220/14C08F220/06C08F220/32C08F220/18
Inventor 王笑冰梁厚慧王蕾蕾李建兵黄燕燕
Owner SHENZHEN SHENDA AURORA TECH
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