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Long carbon chain nylon and its synthesis method

A synthesis method and long carbon chain technology, applied in the field of polyamide engineering plastics and its synthesis, can solve problems such as ineffectiveness, deterioration of heat resistance and rigidity of polyamide materials, and change of materials

Inactive Publication Date: 2004-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 88104294.3 reports the use of polyethylene graft copolymers with polar branched chains to be blended with PA1010 to improve its low-temperature performance: low-temperature impact strength, elongation at break, but resulting in heat resistance and rigidity of polyamide materials deterioration of
Japanese patent Zhao 61-36340 adopts a surface coating agent greater than 1w%, such as silane compounds, fluorocarbons, etc. to coat glass beads to control or inhibit the reduction of its impact strength or tensile elongation, but the effect is not obvious and other Performance suffers
Practice has proved that it is difficult to keep other properties unchanged while changing one or several properties of the material by adding one or several additives

Method used

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  • Long carbon chain nylon and its synthesis method
  • Long carbon chain nylon and its synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 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.

[0047] Add 30kg of tridecanedinitrile, 60kg of ethanol (95%), 3.0kg of skeleton nickel, and 20kg of liquefied ammonia into the autoclave, extract the gas in the autoclave under reduced pressure, feed hydrogen into the autoclave and keep the pressure at 2Mpa, and heat up The temperature of the reaction kettle was controlled at 120° C., and the temperature was lowered to 60° C. after 1 hour. The inside of the reaction kettle was lowered to normal pressure, the catalyst was filtered out, ethanol and ammonia were distilled off to obtain tridecanediamine.

[0048] Add the refined t...

Embodiment 2

[0051] Add 40kg of tetradecanedioic acid produced by fermentation into a reactor with agitated distillation, heat at 140°C to melt the tetradecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 12 hours of dehydration reaction, the temperature was raised to 350° C., kept for 4 hours, and distilled under reduced pressure to distill tetradecanedinitrile.

[0052] Add 30kg of tetradecanedinitrile, 60kg of ethanol (95%), 3.6kg of skeleton nickel, and 24kg of liquefied ammonia into the autoclave, extract the gas in the autoclave under reduced pressure, and feed hydrogen into the autoclave to keep the pressure at 2.5MPa. Raise the temperature so that the temperature of the reactor is controlled at 120° C. After 60 minutes, the temperature is lowered to 60° C., the inside of the reactor is reduced to normal pressure, the catalyst is filtered out, ethanol and ammonia are distilled off to obtain tetradecanediamine.

[0053] Add the refined tetradec...

Embodiment 3

[0056] Add 40kg of pentadecanedioic acid produced by the fermentation method into a reactor with agitated distillation, heat at 150°C to melt pentadecanedioic acid, feed ammonia gas, and control the flow rate of ammonia gas at 60m 3 After 12 hours of dehydration reaction, the temperature was raised to 350° C., kept for 4 hours, and distilled under reduced pressure to distill pentadecanedinitrile.

[0057] Add 30kg of pentadecanedinitrile, 60kg of ethanol, 4.5kg of skeleton nickel, and 18kg 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 1.5MPa. The temperature is controlled at 120°C, and after 60 minutes, the temperature is lowered to 60°C, the pressure in the reactor is lowered to normal pressure, the catalyst is filtered out, and ethanol and ammonia are distilled off to obtain pentadecanediamine.

[0058] Add the refined pentadecanedioic acid: ethanol in the ra...

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Abstract

A C13-C18 nylon with long carbon chain is prepared from the dibasic acid with long carbon chain and prepared by fermentation method through synthesizing. Its advantages are low hydroscopicity, high size stability and toughness, and high resistance to low temp.

Description

technical field [0001] The invention relates to polyamide engineering plastics (nylon) and a synthesis method thereof. Background technique [0002] Polyamide Engineering Plastics (PA), also known as nylon, refers to a linear thermoplastic polymer with repeating structural units of amide groups (-CONH) on the main chain. It is obtained by polycondensation of dibasic acid and diamine or amino acid. The amide group of nylon is polar, and hydrogen bonds are formed between molecules, so nylon has strong wear resistance, impact resistance, fatigue resistance, corrosion resistance, oil resistance, solvent resistance, non-toxicity, good self-extinguishing property, good electronic insulation, etc. Excellent characteristics. Mainly used in mechanical instruments, automobiles, textiles, etc. to make bearings, gears, turbines, auto parts, oil pipes, fuel tanks, etc. It is currently one of the most widely used, fastest growing and most researched varieties. [0003] In 1934, Americ...

Claims

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Application Information

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IPC IPC(8): C08G69/26
Inventor 张艳丽宋喜军高大成
Owner CHINA PETROLEUM & CHEM CORP
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