Preparation method of environment-friendly thermoplastic elastomer hot melt adhesive

A technology of thermoplastic elastomers and hot melt adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of affecting performance and poor effect, and achieve low solvent resistance and low energy consumption. Production cost, the effect of low production cost

A technology of thermoplastic elastomers and hot melt adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of affecting performance and poor effect, and achieve low solvent resistance and low energy consumption. Production cost, the effect of low production cost

CN111334239AInactive Publication Date: 2020-06-26含山县金中环装饰材料有限公司
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  • Preparation method of environment-friendly thermoplastic elastomer hot melt adhesive

Examples

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Effect test

Embodiment 1

[0021] (1) Preparation of rice bran oil methyl ester: In a reaction kettle equipped with an electric stirrer, a reflux condenser and a thermometer, add 47 parts of rice bran oil that has been pre-dehydrated to a water content of 0.1% and heated to 35°C in a constant temperature water bath , add 53 parts of methanol solution containing 5% mass fraction of sodium hydroxide, stir and react for 2 hours, add 5% mass fraction of hydrochloric acid to neutralize to pH 4, pour the reaction solution into a separatory funnel, and let it stand for stratification. Remove the lower liquid, wash the upper liquid with deionized water 3 times until neutral, and distill off the water under reduced pressure to obtain clear and transparent rice bran oil methyl ester; (2) Synthesis of rice bran oleic acid-based polyester polyol: Add 61 parts of rice bran oil methyl ester, 41 parts of adipic acid, and 35 parts of ethylene glycol prepared in step (1) to the reaction kettle of the reactor, thermometer...

Embodiment 2

[0024] (1) Preparation of rice bran oil methyl ester: In a reaction kettle equipped with an electric stirrer, a reflux condenser and a thermometer, add 47 parts of rice bran oil that has been pre-dehydrated to a water content of 0.1% and heated to 35°C in a constant temperature water bath , add 51 parts of methanol solution containing 5% sodium hydroxide by mass fraction, stir and react for 1 h, add hydrochloric acid with 5% mass fraction to neutralize to pH 4, pour the reaction solution into a separatory funnel, and let it stand for stratification. Remove the lower layer liquid, wash the upper layer liquid with deionized water for 3 times until neutral, and distill off the water under reduced pressure to obtain clear and transparent rice bran oil methyl ester;

[0025] (2) Synthesis of rice bran oleic acid-based polyester polyol: 55 parts of rice bran oil methyl ester prepared in step (1), Add 33 parts of adipic acid and 35 parts of ethylene glycol into it, blow nitrogen for ...

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Abstract

The invention, which belongs to the technical field of adhesives, relates to a preparation method of an environment-friendly thermoplastic elastomer hot melt adhesive. According to the preparation method of an environment-friendly thermoplastic elastomer hot melt adhesive, the prepared environment-friendly thermoplastic elastomer hot melt adhesive has no bubbles; no edge warping exists; the high aging resistance, temperature resistant, and corrosion resistant are realized; meanwhile, the adhesive is used in the form of solid powder, no volatile matter is discharged in the coating and bonding processes, renewable green and environment-friendly raw materials are used, environmental pollution is completely avoided; the powdery adhesive is used, and the adhesive has the advantages of being stable in performance, free of environmental pollution and the like, and is simple and convenient in preparation method, low in equipment requirement, low in cost and good in dispersion effect.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to a preparation method of an environment-friendly thermoplastic elastomer hot melt adhesive. Background technique [0002] Polyurethane hot melt adhesives can usually be divided into two categories: one is thermoplastic polyurethane elastomer hot melt adhesives, commonly known as polyurethane hot melt adhesives; the other is reactive polyurethane hot melt adhesives, usually referring to moisture-curing polyurethane hot melt adhesives Melt, the two are different. Although thermoplastic polyurethane hot melt adhesives can be used repeatedly, they often have low bonding strength, poor high temperature resistance, and poor solvent resistance. Therefore, in order to overcome these shortcomings, people have developed reactive polyurethane hot melt adhesives. However, the reactive polyurethane hot melt adhesive has poor heat resistance due to its reactivity. When the temperature is hig...

Claims

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Application Information

Patent Timeline
26 Jun 2020
Publication
CN111334239A
IPC
C09J175/06; C09J127/06; C08G18/12; C08G18/34; C08G18/40; C08G18/42; C08G18/62; C08G18/66; C08G18/32
CPC
C08G18/12; C08G18/348; C08G18/4063; C08G18/4288; C08G18/6204; C08G18/6225; C08G18/6659; C08L2201/08
Inventors
郭坤