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Polyester amide resin based on 2, 3-butylene glycol and preparation method of polyester amide resin

A polyester amide and butanediol technology is applied in the field of polyester amide resin based on 2,3-butanediol and its preparation, which can solve the problems of large friction coefficient, large internal stress, stress cracking and the like, and achieve vitrification. The effect of high transition temperature and better mechanical properties of products

Inactive Publication Date: 2018-07-10
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its biggest disadvantage is that the internal stress of the product is large, it is easy to stress cracking, the friction coefficient is large, and there is no self-lubricating property.
It can only be used as a component with little force and small load, which limits its application range

Method used

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  • Polyester amide resin based on 2, 3-butylene glycol and preparation method of polyester amide resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) 41 parts of terephthalic acid, 49 parts of 2,3-butanediol, and 0.02 parts of the first catalyst zinc acetate are sequentially added to a high-pressure reactor with a condensation and vacuum device;

[0057] (2) Vacuumize the autoclave and fill it with nitrogen three times, replace the air in the autoclave to ensure that the esterification reaction is carried out under nitrogen, and heat up to 210°C for 2 hours under stirring and condensation until the condensate The amount of water reaches 92% of the theoretically calculated amount (the theoretically calculated amount of condensate water reaches twice the molar amount of terephthalic acid);

[0058] (3) Add 0.02 part of the second catalyst tetra-n-butyl titanate, 0.02 part of triphenyl phosphite, vacuumize to 50 Pa at 250 ° C, and react for 1.5 hours;

[0059] (4) Add 10 parts of caprolactam, fill the reactor with nitrogen until the pressure reaches 20kPa, and react at a constant temperature of 230°C for 1 hour; the...

Embodiment 2

[0062] (1) 47 parts of dimethyl naphthalate, 38 parts of 2,3-butanediol, and 0.01 part of the first catalyst dibutyltin oxide are sequentially added to a high-pressure reactor with a condensation and vacuum device;

[0063] (2) Vacuumize the autoclave and fill it with nitrogen three times, replace the air in the autoclave to ensure that the transesterification reaction is carried out under nitrogen, and heat up to 230°C for 3 hours under stirring and condensation until the condensate The amount of methanol reaches 92% of the theoretically calculated amount (the theoretically calculated amount of the condensate methanol reaches twice the molar amount of dimethyl naphthalate);

[0064] (3) Add 0.01 part of the second catalyst antimony trioxide, 0.01 part of trimethyl phosphate, vacuumize to 300 Pa at 320 ° C, and react for 3 hours;

[0065] (4) Add 15 parts of caprolactam, fill the reactor with nitrogen until the pressure reaches 50kPa, and react at a constant temperature of 300...

Embodiment 3

[0068] (1) Add 43 parts of isophthalic acid, 52 parts of 2,3-butanediol, and 0.06 parts of the first catalyst tetraethyl titanate to a high-pressure reactor with a condensation and vacuum device;

[0069] (2) Vacuumize the autoclave and fill it with nitrogen three times, replace the air in the autoclave to ensure that the esterification reaction is carried out under nitrogen, and heat up to 230°C for 1 hour under stirring and condensation until the condensate The amount of water reaches 92% of the theoretically calculated amount (the theoretically calculated amount of condensate water reaches twice the molar amount of isophthalic acid);

[0070] (3) Add 0.06 part of the second catalyst dibutyltin dilaurate, 0.06 part of triphenyl phosphate, vacuumize to 450Pa at 240°C, and react for 1 hour;

[0071] (4) Add 5 parts of lauryl lactam, fill the reactor with nitrogen until the pressure reaches 10kPa, and react at a constant temperature of 200°C for 0.5 hours; then raise the temper...

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Abstract

The invention belongs to the technical field of high-molecular materials, and relates to polyester amide resin based on 2, 3-butylene glycol and a preparation method of the polyester amide resin. Thepolyester amide resin comprises, by weight, 20-65 parts of aromatic dibasic acid and / or aromatic dibasic ester, 20-70 parts of 2, 3-butylene glycol, 5-50 parts of cyclic lactam, 0.01-0.06 part of first catalysts, 0.01-0.06 part of second catalysts and 0.01-0.06 part of heat stabilizers. The prepared high-molecular-weight polyester amide resin based on the 2, 3-butylene glycol improves reaction activity of 2, 3-butylene glycol polyester molecular chains and solves the problem that the 2, 3-butylene glycol is difficult to be polymerized to obtain high-molecular-weight products, the 2, 3-butyleneglycol can achieve high molecular weight and has excellent mechanical property, heat resistance is enhanced, and heat stability can be improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a polyester amide resin based on 2,3-butanediol and a preparation method thereof. Background technique [0002] Polyester refers to a high molecular linear polymer prepared by polycondensation reaction of dibasic acid and diol. According to different kinds of diacids and diols, many kinds of polyesters can be synthesized. Since polyethylene terephthalate (PET) was successfully obtained by using terephthalic acid and ethylene glycol in 1941, polyester, as an engineering plastic, has gradually entered people's daily work and life, and has played an increasingly important role. important role. The current commercial polyester products mainly include polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene terephthalate - 1,4-cyclohexanedimethylester (PCT), polyethylene naphthalate (PEN), polybutylene naphthalat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/44
CPCC08G69/44
Inventor 杨桂生赵冬云严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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