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Noncrystalline high-melting-point polyester hot melt adhesive and preparation method thereof

A polyester hot-melt adhesive, non-crystalline technology, used in adhesives, polymer adhesive additives, adhesive additives, etc., can solve the problems of easy breakage, production difficulties, low production efficiency, etc., and achieve the effect of high melting point

Inactive Publication Date: 2015-03-25
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyester hot-melt adhesive products generally have two situations. One situation is that the melting point is designed to be low, such as the final melting point of DSC is lower than 100°C. If there is a sticky block, it will bring difficulties to production and lower production efficiency; another kind of situation is that the melting point design is higher, such as the final melting point of DSC is higher than 110 ℃, this kind of hot melt adhesive is easy to crystallize, but the feel of hot melt adhesive and Hard texture, brittle and easy to break

Method used

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  • Noncrystalline high-melting-point polyester hot melt adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A non-crystalline high melting point polyester hot melt adhesive, including: terephthalic acid 166g, isophthalic acid 16.6g, 1,6-adipic acid 29.29g, ethylene glycol 89.595g, diethylene glycol 15.3g , 1,5-pentanediol 37.5g, tetra-n-butyl titanate 0.0996g, trimethyl phosphate 0.0166g, antioxidant 0.415g, ethylene-n-butyl acrylate-carbonyl terpolymer 1.66g.

[0022] A preparation method of non-crystalline high melting point polyester hot melt adhesive, the steps are as follows:

[0023] (1) The above-mentioned terephthalic acid, isophthalic acid, 1,6-adipic acid, ethylene glycol, diethylene glycol and 1,5-pentanediol under the action of the catalyst tetra-n-butyl titanate Carry out the esterification reaction, the reaction temperature is 150 ~ 250 ℃, when the distilled amount of water is 90 ~ 95% of the theory, the esterification reaction ends;

[0024] (2) Add stabilizer trimethyl phosphate and antioxidant, carry out reduced compression polymerization reaction at 250-260℃, 100-...

Embodiment 2

[0032] A non-crystalline high melting point polyester hot melt adhesive, including: terephthalic acid 166g, isophthalic acid 19.92g, 1,10-sebacic acid 18.25g, ethylene glycol 93g, diethylene glycol 39.75g , 1,5-pentanediol 15.62g, tetraisopropyl titanate 0.332g, triphenyl phosphite 0.083g, antioxidant 0.498g, ethylene-vinyl acetate-carbonyl terpolymer 8.3g.

[0033] A preparation method of non-crystalline high melting point polyester hot melt adhesive, the steps are as follows:

[0034] (1) The above-mentioned terephthalic acid, isophthalic acid, 1,10-sebacic acid, ethylene glycol, diethylene glycol and 1,5-pentanediol under the action of the catalyst tetraisopropyl titanate Carry out the esterification reaction, the reaction temperature is 150 ~ 250 ℃, when the distilled amount of water is 90 ~ 95% of the theory, the esterification reaction ends;

[0035] (2) Add stabilizer triphenyl phosphite and antioxidant, and carry out reduced compression polyreaction at 250-260°C and 100-133 ...

Embodiment 3

[0043] A non-crystalline high melting point polyester hot melt adhesive, including: terephthalic acid 166g, isophthalic acid 18.26g, 1,12-dodecanedioic acid 21.9g, ethylene glycol 94.1g, diethylene glycol 32.178g, 1,5-pentanediol 31.6g, tetraethyl titanate 0.166g, trimethyl phosphate 0.0498g, antioxidant 0.4648g, ethylene-n-butyl acrylate-glycidyl ester terpolymer 4.98g .

[0044] A preparation method of non-crystalline high melting point polyester hot melt adhesive, the steps are as follows:

[0045] (1) The role of the above terephthalic acid, isophthalic acid, 1,12-dodecanedioic acid, ethylene glycol, diethylene glycol and 1,5-pentanediol in the catalyst tetraethyl titanate The esterification reaction is carried out under the temperature of 150 ~ 250 ℃, when the distilled amount of water is 90 ~ 95% of the theory, the esterification reaction ends;

[0046] (2) Add stabilizer trimethyl phosphate and antioxidant, carry out reduced compression polymerization reaction at 250-260℃, 1...

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Abstract

The invention discloses a noncrystalline high-melting-point polyester hot melt adhesive and a preparation method thereof. Because a specific formula proportion and a specific ethylene terpolymer are adopted to modify polyester, the comprehensive performance of the polyester hot melt adhesive prepared according to the invention is improved, and has a relatively high melting point and a relatively soft handfeel, and therefore, the polyester hot melt adhesive and a preparation method thereof disclosed by the invention are extremely applicable to the field of textile adhesion.

Description

technical field [0001] The invention relates to an amorphous high-melting point polyester hot-melt adhesive and a preparation method thereof. Background technique [0002] Most of the currently known polyester hot melt adhesives use aromatic dibasic acids such as terephthalic acid (or dimethyl dibasic acid) and long-chain aliphatic dibasic acids (or dimethyl dibasic acid), binary Alcohol is obtained after esterification (or transesterification) and polycondensation. Polyester hot-melt adhesive products generally have two situations. One situation is that the melting point is designed to be low, such as the final melting point of DSC is lower than 100°C. If there is a sticky block, it will bring difficulties to production and lower production efficiency; another kind of situation is that the melting point design is higher, such as the final melting point of DSC is higher than 110 ℃, this kind of hot melt adhesive is easy to crystallize, but the feel of hot melt adhesive and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J11/08C08G63/672
CPCC08G63/672C09J11/08C09J167/02
Inventor 李哲龙朱万育马洪伟曾作祥
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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