Alcohol-soluble copolyamide and preparation method thereof

A copolyamide, alcohol-soluble technology, applied in the field of polymer material synthesis, can solve problems such as emissions, and achieve the effects of lowering melting point, simple preparation method and improving biomass conversion rate

Inactive Publication Date: 2013-05-22
苏州瀚海化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the main raw materials of the alcohol-soluble copolyamide prepared by the existing technology are all from petrochemical raw materials, and the production process will generate a large amount of carbon emissions. With the increasing depletion of petroleum resources

Method used

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  • Alcohol-soluble copolyamide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1 Preparation of alcohol-soluble copolyamide

[0024] Follow the steps below to prepare:

[0025] The reaction raw materials are fed in the following molar ratios: 20% adipic acid, 10% sebacic acid, 20% furandicarboxylic acid, 20% hexamethylene diamine and 30% decane diamine. Under a nitrogen system, heat up to 180°C and add Pressure to 1Mpa, heat preservation and pressure for 1 hour, then gradually raise the temperature to 250°C, after heat preservation and pressure for 1.5 hours, start to depressurize and drain, reduce the pressure to normal pressure within 1 hour, maintain for 0.5 hours and then depressurize for 0.5 hours. Then inert gas is filled to 0.5Mpa, and the melt is extruded and cooled to obtain an alcohol-soluble copolyamide product.

[0026] The product was analyzed by DSC, and the melting point (Tm) was measured to be 138~146°C; at 25°C, with sulfuric acid as the solvent, the relative viscosity was 1.8;

Example Embodiment

[0027] Example 2 Preparation of alcohol-soluble copolyamide

[0028] Follow the steps below to prepare:

[0029] The reaction raw materials are fed in the following molar ratios: adipic acid 10%, sebacic acid 15%, furandicarboxylic acid 25%, hexamethylene diamine 25%, and decane diamine 25%. Under a nitrogen system, the temperature is increased to 180°C while adding Pressure to 1Mpa, heat preservation and pressure for 1 hour, then gradually raise the temperature to 250°C, after heat preservation and pressure for 1.5 hours, start to depressurize and drain, reduce the pressure to normal pressure within 1 hour, maintain for 0.5 hours and then depressurize for 0.5 hours. Then inert gas is filled to 0.5Mpa, and the melt is extruded and cooled to obtain an alcohol-soluble copolyamide product.

[0030] The product was analyzed by DSC, and the melting point (Tm) was measured to be 142~147°C; at 25°C, with sulfuric acid as the solvent, the relative viscosity was 2.1;

Example Embodiment

[0031] Example 3 Preparation of alcohol-soluble copolyamide

[0032] Follow the steps below to prepare:

[0033] The reaction raw materials are fed in the following molar ratios: adipic acid 10%, sebacic acid 10%, furandicarboxylic acid 20%, caprolactam 20%, hexamethylene diamine 10% and decane diamine 30%, and the temperature is increased to 180 under a nitrogen system. ℃, pressurize to 1Mpa at the same time, gradually increase to 250℃ after heat preservation and pressure retention for 1.5 hours, then start depressurization and drainage after heat preservation and pressure retention for 1.5 hours, reduce the pressure to normal pressure within 1 hour, and then decompress after 0.5 hours. hour. Then inert gas is filled to 0.5Mpa, and the melt is extruded and cooled to obtain an alcohol-soluble copolyamide product.

[0034] The product was analyzed by DSC, and the melting point (Tm) was measured to be 123~130°C; at 25°C, with sulfuric acid as the solvent, the relative viscosity was 2...

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Abstract

The invention discloses alcohol-soluble copolyamide and a preparation method thereof. The alcohol-soluble copolyamide is characterized by being prepared by charging dicarboxylic acid, diamine, lactam and furan-2,5-dicarboxyic acid wchi are used as raw materials and carrying out fusion polycondensation to obtain the alcohol-soluble copolyamide, wherein the raw materials react in equivalent ratio of carboxyl to amino of 1:1. The novel alcohol-soluble copolyamide obtained by adopting the preparation method contains more than 60wt% of biomass-based raw material, has excellent alcohol solubility and can be applied to the fields of paints and binding agents.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis, in particular to an alcohol-soluble copolyamide mainly made of biomass raw materials. Background technique [0002] Dibasic acids and diamines (or lactams) undergo dehydration polycondensation to form polyamide resins, and copolyamide resins can be synthesized from various diamines and various diamines (or lactams). Copolyamide resins exhibit different properties according to the types and proportions of their monomers, and can be used in printing inks, coatings, adhesives and other fields. [0003] The low melting point and alcohol solubility of polyamide are generally obtained by destroying the regularity of polymer molecules through ternary or quaternary copolymerization. For example, US Pat. C. It is partially soluble in hot alcohol-water mixtures. Japanese Patent No. 50-35291 discloses a series of aliphatic quaternary copolyamides with lower melting point and better alcohol solubil...

Claims

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Application Information

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IPC IPC(8): C08G69/40
Inventor 宁珅叶同奇方筱
Owner 苏州瀚海化学有限公司
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