Long carbon chain nylon hot melt glue and its synthesis method

Abstract

A hot-fusible adhesive of C13-C18 polyamide with long carbon chain is prepared from the dibasic acid prepared by fermenting method through synthesizing. Its advantages are high adhesion, softness and size stability, and excellent resistance to water washing.

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 20kg of liquid ammonia into the high-pressure reactor, depressurize and extract the gas in the reactor, feed hydrogen into the reactor and keep the pressure at 3MPa, and raise the temperature to make the temperature of the reactor 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 t...

Embodiment 2

[0050] Add 40kg of tetradecanedioic acid produced by fermentation into a reaction kettle with agitated distillation, heat at 130°C to melt the tetradecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 13 hours of dehydration reaction, the temperature was raised to 330° C., kept for 6 hours, distilled under reduced pressure, and tetradecanedinitrile was distilled off.

[0051] Add 30kg of tetradecanedinitrile, 70kg of ethanol, 3.6kg of skeleton nickel, and 24kg of liquid ammonia into the high-pressure reactor, decompress and extract the gas in the reactor, feed hydrogen into the reactor and keep the pressure at 2.5MPa, and raise the temperature to make the reactor 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 refi...

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 20kg of liquid ammonia into the high-pressure reactor, depressurize and extract the gas in the reactor, feed hydrogen into the reactor and keep the pressure at 3MPa, and raise the temperature to make the temperature of the reactor 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 t...

Embodiment 2

[0050] Add 40kg of tetradecanedioic acid produced by fermentation into a reaction kettle with agitated distillation, heat at 130°C to melt the tetradecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 13 hours of dehydration reaction, the temperature was raised to 330° C., kept for 6 hours, distilled under reduced pressure, and tetradecanedinitrile was distilled off.

[0051] Add 30kg of tetradecanedinitrile, 70kg of ethanol, 3.6kg of skeleton nickel, and 24kg of liquid ammonia into the high-pressure reactor, decompress and extract the gas in the reactor, feed hydrogen into the reactor and keep the pressure at 2.5MPa, and raise the temperature to make the reactor 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 refi...

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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