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Polyester hot melt adhesive for film preparation and preparation method of polyester hot melt adhesive

A technology for polyester hot-melt adhesives and films, applied in adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problems of low tensile strength, long curing time, affecting production efficiency, etc. Transverse and longitudinal tensile strength improvement, meeting market demand, the effect of Shore hardness reduction

Active Publication Date: 2017-01-11
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

[0003] However, the curing time of polyester currently used to produce omentum-shaped hot melt adhesives is generally 120-180s, and the curing time is longer, which makes the speed of omentum production slower and affects production efficiency; at the same time, the current polyester hot-melt adhesive The Shore hardness itself is relatively high, generally above 45HD, which makes the softness of the omentum-shaped hot-melt adhesive products prepared relatively low; The transverse and longitudinal tensile strength is low, generally lower than 6N / cm, easy to tear, affecting the bonding effect of omentum hot melt adhesive products in practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Polyester hot melt adhesive for film-making, its raw material composition includes: adipic acid 146.0000g (1.0000mol), succinic acid 35.4000g (0.3000mol), tridecanedioic acid 61.0000g (0.2500mol), dodecanoic acid 23.0000 g (0.1000mol), 1,4-butanediol 135.0000g (1.5000mol), 1,4-cyclohexanedimethanol 164.1600g (1.1400mol), tetrabutyl titanate 0.1592g, 1,2,4- 0.0260 g of trimellitic anhydride, 0.1592 g of tris[2.4-di-tert-butylphenyl] phosphite.

[0028] The preparation method of above-mentioned film-making polyester hot-melt adhesive, the steps are as follows:

[0029] (1) Add dibasic acid, diol, tetrabutyl titanate and 1,2,4-trimesic acid anhydride into a 1L reactor, gradually raise the temperature to 100°C and start stirring. When the temperature is close to 135°C, start There is water distilling out, the distilling temperature is 98-102°C, and the temperature continues to rise to about 230°C. When the water output reaches more than 97% of the theoretical value, the es...

Embodiment 2

[0033] Polyester hot melt adhesive for film-making, its raw material composition includes: adipic acid 146.0000g (1.0000mol), succinic acid 41.3000g (0.3500mol), tridecanedioic acid 48.8000g (0.2000mol), dodecanoic acid 69.0000 g (0.3000mol), 144.0000g (1.6000mol) of butanediol, 195.8400g (1.3600mol) of 1,4-cyclohexanedimethanol, 0.2136g of tetrabutyl titanate, 0.0920 of trimellitic anhydride g, 0.1526 g of tris[2.4-di-tert-butylphenyl] phosphite.

[0034] The preparation method of above-mentioned film-making polyester hot-melt adhesive, the steps are as follows:

[0035] (1) Add dibasic acid, diol, tetrabutyl titanate and 1,2,4-trimesic acid anhydride into a 1L reactor, gradually raise the temperature to 100°C and start stirring. When the temperature is close to 135°C, start There is water distilling out, the distilling temperature is 98-102°C, and the temperature continues to rise to about 230°C. When the water output reaches more than 97% of the theoretical value, the este...

Embodiment 3

[0039] Polyester hot melt adhesive for film-making, its raw material composition includes: adipic acid 146.0000g (1.0000mol), succinic acid 47.2000g (0.4000mol), tridecanedioic acid 73.2000g (0.3000mol), dodecanoic acid 46.0000 g (0.2000mol), 153.0000g (1.7000mol) of butanediol, 192.9600g (1.3400mol) of 1,4-cyclohexanedimethanol, 0.2450g of tetrabutyl titanate, 0.1562 of trimellitic anhydride g, 0.2343 g of tris [2.4-di-tert-butylphenyl] phosphite.

[0040] The preparation method of above-mentioned film-making polyester hot-melt adhesive, the steps are as follows:

[0041] (1) Add dibasic acid, diol, tetrabutyl titanate and 1,2,4-trimesic acid anhydride into a 1L reactor, gradually raise the temperature to 100°C and start stirring. When the temperature is close to 135°C, start There is water distilling out, the distilling temperature is 98-102°C, and the temperature continues to rise to about 230°C. When the water output reaches more than 97% of the theoretical value, the est...

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Abstract

The invention provides a polyester hot melt adhesive for film preparation and a preparation method of the polyester hot melt adhesive. The polyester hot melt adhesive for film preparation is characterized by being prepared from raw materials as follows: binary acid consisting of a mixture of adipic acid, succinic acid, dodecandioic acid and tridecandioic acid, diatomic alcohol consisting of a mixture of 1,4-butanediol and 1,4-cyclohexanedimethanol, 1,2,4-benzenetricarboxylic anhydride, a catalyst and an antioxidant. The binary acid adopted in the adhesive is all aliphatic acid, and the polyester hot melt adhesive applicable to film preparation is finally synthesized by setting the ratio of the raw materials and adding a specific amount of 1,2,4-benzenetricarboxylic anhydride. By means of a prepared polyester hot melt adhesive product, the curing time is remarkably shortened, the shore hardness is remarkably reduced, the transverse and longitudinal tension strength of a net film after the net film is prepared are significantly improved, and market requirements are met.

Description

technical field [0001] The invention relates to a polyester hot-melt adhesive and a preparation method thereof, in particular to a polyester hot-melt adhesive for film making and a preparation method thereof. Background technique [0002] Due to its unique grid shape, low volatility and excellent bonding performance, mesh-like hot melt adhesives are favored by the automotive industry for hot-melt lamination. [0003] However, the curing time of polyester currently used to produce omentum-shaped hot melt adhesives is generally 120-180s, and the curing time is longer, which makes the speed of omentum production slower and affects production efficiency; at the same time, the current polyester hot-melt adhesive The Shore hardness itself is relatively high, generally above 45HD, which makes the softness of the omentum-shaped hot-melt adhesive products prepared relatively low; The transverse and longitudinal tensile strengths are low, generally lower than 6N / cm, which is easy to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J11/06C09J7/00C08G63/20
CPCC08G63/20C08K5/526C09J7/00C09J11/06C09J167/02
Inventor 雷何记
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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