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Novel copolyster hot melt adhesive and preparation method thereof

A technology of copolyester and hot melt adhesive, which is applied in the directions of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem that the dry cleaning resistance needs to be improved, and achieve the effect of improving the dry cleaning resistance.

Active Publication Date: 2016-02-24
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the different washing methods of clothing and clothes, more and more tests show that the dry cleaning resistance of conventional copolyester hot melt adhesive products still needs to be improved

Method used

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  • Novel copolyster hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] New copolyester hot melt adhesive, the raw material composition includes: bisphenol A56.544g, maleic acid 26.912g, terephthalic acid 166g, 1,6-adipic acid 29.2g, 1,4-butanediol 120.06 g, 35.416 g of 1,3-propanediol, 0.0996 g of monobutyl stannate, 0.0996 g of tetrabutyl titanate, and 0.0498 g of triphenyl phosphite.

[0025] The preparation method of novel copolyester hot-melt adhesive, the steps are as follows:

[0026] (1) Add 56.544g of bisphenol A, 26.912g of maleic acid, and 0.0996g of monobutylstannoic acid into a reaction kettle with a stirrer, and slowly raise the temperature to 160°C~170°C, at a pressure of -0.09 Reaction under reduced pressure for 3.0 hours at MPa~-0.1MPa to obtain prepolymer;

[0027] (2) The obtained prepolymer, 166g of terephthalic acid, 29.2g of 1,6-adipic acid, 120.06g of 1,4-butanediol, 35.416g of 1,3-propanediol, and tetrabutyl titanate 0.0996g, put it into the reaction kettle with agitator, raise the temperature to 190℃~200℃ under th...

Embodiment 2

[0031] New copolyester hot melt adhesive, the raw material composition includes: bisphenol A70.908g, maleic acid 34.394g, terephthalic acid 166g, 1,6-adipic acid 51.1g, 1,4-butanediol 151.875 g, 25.65 g of 1,3-propanediol, 0.083 g of monobutyl stannate, 0.083 g of tetrabutyl titanate, and 0.083 g of triphenyl phosphite.

[0032] The preparation method of novel copolyester hot-melt adhesive, the steps are as follows:

[0033] (1) Add 70.908g of bisphenol A, 34.394g of maleic acid, and 0.083g of monobutylstannic acid into a reaction kettle with a stirrer, and slowly raise the temperature to 160°C~170°C. 0.09MPa~-0.1MPa under reduced pressure for 3.0h to obtain prepolymer;

[0034] (2) The obtained prepolymer, 166g of terephthalic acid, 51.1g of 1,6-adipic acid, 151.875g of 1,4-butanediol, 25.65g of 1,3-propylene glycol, and tetrabutyl titanate 0.083g, put it into the reaction kettle with agitator, raise the temperature to 190℃~200℃ under the protection of nitrogen, when the sy...

Embodiment 3

[0038] New copolyester hot melt adhesive, the raw material composition includes: bisphenol A91.428g, maleic acid40.484g, terephthalic acid166g, 1,6-adipic acid73g, 1,4-butanediol168.75 g, 23.25 g of ethylene glycol, 0.0664 g of monobutyl stannate, 0.0664 g of tetrabutyl titanate, and 0.0996 g of triphenyl phosphite.

[0039] The preparation method of novel copolyester hot-melt adhesive, the steps are as follows:

[0040] (1) Add 1.428g of bisphenol A, 40.484g of maleic acid, and 0.0664g of monobutylstannoic acid into a reaction kettle with a stirrer, and slowly raise the temperature to 160°C~170°C. 0.09MPa~-0.1MPa under reduced pressure for 3.0h to obtain prepolymer;

[0041] (2) The obtained prepolymer, 166g of terephthalic acid, 73g of 1,6-adipic acid, 168.75g of 1,4-butanediol, 23.25g of ethylene glycol, and 0.0664g of tetrabutyl titanate, Add it into a reaction kettle with a stirrer, raise the temperature to 190°C~200°C under the protection of nitrogen, when the system h...

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Abstract

The invention discloses a novel copolyster hot melt adhesive and a preparation method thereof. The preparation method is mainly characterized by comprising the following steps: selecting raw materials (including bisphenol A, maleic acid, terephthalic acid, other binary acids, 1,4-butanediol, other dihydric alcohols, a catalyst and a stabilizer) at a preset ratio; performing negative-pressure generation of a prepolymer at the low-temperature section; then completing normal-pressure esterification at the low-temperature section; after that, completing negative-pressure polycondensation at the high-temperature section; finally, preparing the novel copolyster hot melt adhesive product. The prepared novel copolyster hot melt adhesive product is greatly improved in dry cleaning resistance and not inferior to the washing resistance of a polyamide hot melt adhesive, on the basis of maintaining the comprehensive performance of a conventional copolyster hot melt adhesive product, and the integral cost of the prepared novel copolyster hot melt adhesive product is lower than that of the conventional polyamide hot melt adhesive.

Description

technical field [0001] The invention relates to a novel hot-melt adhesive and a preparation method thereof, in particular to a novel copolyester hot-melt adhesive and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] Copolyester hot melt adhesive has the characteristics of good melting fluidity, fast curing speed and high bonding strength, and is one of the most widely used hot melt adhesive varieties. [0003] At present, when preparing copolyester hot-melt adhesive products, it is mainly obtained by adopting dibasic acid esters, dibasic acids and dibasic alcohols through transesterification and esterification in sequence, and then undergoing reduced-pressure compression polymerization. As US6255443 discloses a kind of preparation method of low-melting-point copolyester hot-melt adhesive, and CN1340585 discloses a kind of manufacture method of high-melting-point polyester hot-melt adhesive, CN101126006 proposes a kind...

Claims

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Application Information

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IPC IPC(8): C08G63/52C08G63/78C09J167/06
CPCC08G63/547C08G63/78C09J167/06C08G63/52C08G63/85C09J2301/304C08G63/183C08K5/13C09J11/06C09J167/02
Inventor 雷何记李哲龙
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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