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A kind of polyester hot melt adhesive composition and preparation method thereof

A technology of polyester hot-melt adhesives and compositions, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of increasing procedures and costs, affecting production efficiency, etc., and achieve low manufacturing cost and good quality. Melt stability, adhesive strength, and ease of coating

Active Publication Date: 2015-08-12
SHANGHAI LIGHT IND RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For polyester production enterprises, screw blending increases the process and cost, and affects production efficiency

Method used

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  • A kind of polyester hot melt adhesive composition and preparation method thereof
  • A kind of polyester hot melt adhesive composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation method of the polyester hot-melt adhesive composition of the present invention can be directly blended in a reaction kettle, and has the advantages of high production efficiency and low production cost.

[0039] The polyester hot-melt adhesive composition prepared by the above-mentioned method has low melt viscosity and low specific viscosity decrease rate, and this high-fluidity polyester hot-melt adhesive composition can replace solvent-based adhesives and be directly used in coating process.

Embodiment 1

[0049] Add 234 grams of 1,4-butanediol in a 1L reactor with a thermometer, a mechanical stirrer, a fractionation column and a condenser, then add 232.4 grams of terephthalic acid and 33.2 grams of isophthalic acid under stirring, 58.4 grams of adipic acid, and 0.23 grams of n-ethyl phthalate. Heat up the temperature. When the temperature rises to about 170°C, water droplets will start to distill. The distillation temperature is 90-100°C. Continue to heat up until the temperature in the kettle reaches about 220°C. When the amount of water distilled reaches the theoretical amount, the esterification is completed and low molecular weight oligomers. Continue to raise the temperature to about 240-250°C, and increase the vacuum of the system until the vacuum of the system is less than 133Pa. When the power of the polycondensation reaction reaches the predetermined value, fill in nitrogen to release the vacuum to normal pressure, add 3.4 grams of strontium stearate (purchased from S...

Embodiment 2、3 and 4

[0052] The above three embodiments are carried out by the same steps and conditions as in Example 1, except that the raw materials used and their proportioning ratio are shown in Table 1 below. The analytical results of the obtained product are also listed in Table 1.

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Abstract

The invention relates to a polyester hot melt adhesive composition and a preparation method thereof. The polyester hot melt adhesive composition comprises: (a) polyester diol which is a condensation polymerization product of a dicarboxylic acid component and a dihydric alcohol component with 2-6 carbon atoms, and (b) fatty acid strontium with 16-20 carbon atoms, wherein the dicarboxylic acid component comprises terephthalic acid, unnecessary isophthalic acid and an aliphatic dicarboxylic acid unit with 4-12 carbon atoms, and the weight-average molecular weight of the dicarboxylic acid component is 10,000-100,000. The polyester hot melt adhesive composition has very high fluidity and fusing stability.

Description

technical field [0001] The invention relates to a polyester hot-melt adhesive composition and a preparation method thereof, in particular to a polyester hot-melt adhesive composition with high fluidity and melting stability and a preparation method thereof. Background technique [0002] Polyester hot melt adhesive is an environmentally friendly and pollution-free green adhesive, which is obtained by esterification (or transesterification) and polycondensation of one or more dibasic acids (or esters) and diols. The coating method of polyester hot melt adhesive is generally melt coating, so the fluidity of the glue at a certain temperature has a great influence on the quality and efficiency of coating. If the fluidity of the glue is good, the coating or molding processing temperature is low, the energy consumption is low, and the coating speed and quality are good; the fluidity of the glue is poor, and the permeability and spreadability during coating are also poor, which not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/02C09J11/06C08G63/181C08G63/183
Inventor 祝爱兰
Owner SHANGHAI LIGHT IND RES INST