Long carbon chain nylon hot melt glue and its synthesis method

Abstract

The present invention provides a C 13 ~C 18 A polyamide hot-melt adhesive and a preparation method thereof, wherein the hot-melt adhesive is synthesized from a long carbon chain dibasic acid produced by a fermentation method. The synthesis method has rich sources of raw materials and a simple synthesis route. The obtained hot melt adhesive is superior to polyamide thermal adhesives containing nylon 12 and nylon 1212 in terms of bonding strength, softness, drapability, and dimensional stability, especially in washing resistance. Melt glue.

Description

technical field

[0001] The invention relates to a long carbon chain nylon hot-melt adhesive and a synthesis method thereof. In particular, it relates to a polyamide hot-melt adhesive for preparing clothing and a synthesis method thereof. Background technique

[0002] Polyamide hot-melt adhesive (PA) is a kind of hot-melt adhesive obtained by polycondensation of various fatty dicarboxylic acids and fatty diamines. It is mainly used in the production of clothing hot-melt interlinings. Reinforcement, shaping and other functions are indispensable accessories for garment production. Polyamide hot melt adhesive has the advantages of low melting temperature, narrow melting range, easy processing, wide application range, high bonding strength, good flexibility and wear resistance, excellent aging resistance, washing resistance, and dry cleaning resistance. Melt glue is currently the best material for hot-melt interlining and wireless sewing garments for high-end clothing. [0003...

Examples

Embodiment 1

[0045] Add 40kg of tridecanedioic acid produced by the fermentation method into a reactor with agitated distillation, heat at 130°C to melt the tridecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 10 hours of dehydration reaction, the temperature was raised to 350° C., kept for 4 hours, distilled under reduced pressure, and tridecanedinitrile was distilled off.

[0046] Add 30kg of tridecanedinitrile, 60kg of ethanol, 3.0kg of skeleton nickel, and 20g of liquid ammonia into the autoclave, decompress and extract the gas in the autoclave, feed hydrogen into the autoclave and keep the pressure at 3MPa, raise the temperature to make the temperature of the autoclave The temperature is controlled at 120°C, and the temperature is lowered to 40°C after 1 hour, and the pressure in the reactor is lowered to normal pressure, the catalyst is filtered out, ethanol and ammonia are distilled off to obtain tridecanediamine.

[0047] Add the refined tr...

Embodiment 2

[0050] Add 40kg of tetradecanedioic acid produced by fermentation into a reactor with agitated distillation, heat at 130°C to melt the tetradecanedioic acid, feed ammonia, control the flow rate of ammonia at 60m3 / hour, dehydration reaction 13 After one hour, the temperature was raised to 330°C and kept for 6 hours, and the tetradecanedinitrile was distilled off by distillation under reduced pressure.

[0051] Add 30kg of tetradecanedinitrile, 70kg of ethanol, 3.6kg of skeleton nickel, and 24g of liquid ammonia into the high-pressure reactor, extract the gas in the reactor under reduced pressure, and feed hydrogen into the reactor to keep the pressure at 2.5MPa. The temperature is controlled at 120°C, and after 1 hour, the temperature is lowered to 50°C, and the pressure in the reactor is lowered to normal pressure, the catalyst is filtered out, and ethanol and ammonia are distilled off to obtain tetradecanediamine.

[0052] Add the refined tetradecanedioic acid: ethanol in the...

Embodiment 3～7

[0055] Under the same process conditions as in Example 1, different formulations composed the synthesized polyamide hot-melt adhesives.

technical field

[0001] The invention relates to a long carbon chain nylon hot-melt adhesive and a synthesis method thereof. In particular, it relates to a polyamide hot-melt adhesive for preparing clothing and a synthesis method thereof. Background technique

[0002] Polyamide hot-melt adhesive (PA) is a kind of hot-melt adhesive obtained by polycondensation of various fatty dicarboxylic acids and fatty diamines. It is mainly used in the production of clothing hot-melt interlinings. Reinforcement, shaping and other functions are indispensable accessories for garment production. Polyamide hot melt adhesive has the advantages of low melting temperature, narrow melting range, easy processing, wide application range, high bonding strength, good flexibility and wear resistance, excellent aging resistance, washing resistance, and dry cleaning resistance. Melt glue is currently the best material for hot-melt interlining and wireless sewing garments for high-end clothing. [0003...

Examples

Embodiment 1

[0045] Add 40kg of tridecanedioic acid produced by the fermentation method into a reactor with agitated distillation, heat at 130°C to melt the tridecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 10 hours of dehydration reaction, the temperature was raised to 350° C., kept for 4 hours, distilled under reduced pressure, and tridecanedinitrile was distilled off.

[0046] Add 30kg of tridecanedinitrile, 60kg of ethanol, 3.0kg of skeleton nickel, and 20g of liquid ammonia into the autoclave, decompress and extract the gas in the autoclave, feed hydrogen into the autoclave and keep the pressure at 3MPa, raise the temperature to make the temperature of the autoclave The temperature is controlled at 120°C, and the temperature is lowered to 40°C after 1 hour, and the pressure in the reactor is lowered to normal pressure, the catalyst is filtered out, ethanol and ammonia are distilled off to obtain tridecanediamine.

[0047] Add the refined tr...

Embodiment 2

[0050] Add 40kg of tetradecanedioic acid produced by fermentation into a reactor with agitated distillation, heat at 130°C to melt the tetradecanedioic acid, feed ammonia, control the flow rate of ammonia at 60m3 / hour, dehydration reaction 13 After one hour, the temperature was raised to 330°C and kept for 6 hours, and the tetradecanedinitrile was distilled off by distillation under reduced pressure.

[0051] Add 30kg of tetradecanedinitrile, 70kg of ethanol, 3.6kg of skeleton nickel, and 24g of liquid ammonia into the high-pressure reactor, extract the gas in the reactor under reduced pressure, and feed hydrogen into the reactor to keep the pressure at 2.5MPa. The temperature is controlled at 120°C, and after 1 hour, the temperature is lowered to 50°C, and the pressure in the reactor is lowered to normal pressure, the catalyst is filtered out, and ethanol and ammonia are distilled off to obtain tetradecanediamine.

[0052] Add the refined tetradecanedioic acid: ethanol in the...

Embodiment 3～7

[0055] Under the same process conditions as in Example 1, different formulations composed the synthesized polyamide hot-melt adhesives.

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