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Alkylphenol modified phenolic amide curing agent and preparation method thereof

A technology of phenalkamide and alkylphenol, which is applied in the field of alkylphenol-modified phenalkamide curing agent and its preparation, can solve the problems of easy yellowing and poor impact resistance, and achieve the solution of brittleness, easy yellowing, and operation long-term effect of improving construction performance

Active Publication Date: 2012-08-15
CARDOLITE CHEM ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paint film has good flexibility and excellent water resistance, and is most suitable for heavy-duty anti-corrosion products in marine environments. The biggest disadvantage is that it is easy to yellow and has poor impact resistance.

Method used

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  • Alkylphenol modified phenolic amide curing agent and preparation method thereof
  • Alkylphenol modified phenolic amide curing agent and preparation method thereof
  • Alkylphenol modified phenolic amide curing agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] An alkylphenol-modified phenalkamide curing agent, the raw materials of which are 150.0 g of cardanol, 20.6 g of paraformaldehyde, 94.7 g of triethylenetetramine, and 66.4 g of tall oleic acid.

[0041] The preparation method of above-mentioned alkylphenol modified phenolic amide solidifying agent, comprises the steps:

[0042] Take tall oleic acid and triethylenetetramine, stir evenly, heat up to 200°C, keep warm for 3 hours, after the reaction, cool down to 50°C, add cardanol and paraformaldehyde, heat up to 120°C, keep warm for 3 hours , and then heated up to 150°C for dehydration for 30 minutes, and steamed out without water to obtain a curing agent product, also known as cardanol modified phenalkamide curing agent.

Embodiment 2

[0044] An alkylphenol-modified phenalkamide curing agent, the raw materials of which are 165.0 g of cardanol, 20.6 g of paraformaldehyde, 75.7 g of triethylenetetramine, 7.4 g of m-xylylenediamine, and 59.0 g of tall oleic acid.

[0045] The preparation method of above-mentioned alkylphenol modified phenolic amide solidifying agent, comprises the steps:

[0046] Take tall oleic acid, triethylenetetramine, m-xylylenediamine, stir evenly, heat up to 200°C, keep warm for 3 hours, after the reaction, cool down to 50°C, add cardanol, paraformaldehyde, heat up to 110°C ℃, keep warm for 3 hours, then raise the temperature to 150℃ for dehydration for 30 minutes, cool down to 60℃, add 6.2 g of DMP-30, stir evenly, and obtain the curing agent product, also known as cardanol modified phenalkamide curing agent.

Embodiment 3

[0048] An alkylphenol-modified phenalkamide curing agent, the raw materials of which are 172.5 g of cardanol, 19.8 g of paraformaldehyde, 89.4 g of polyethylene polyamine, 17.0 g of m-xylylenediamine, and 73.8 g of tall oil.

[0049] The preparation method of above-mentioned alkylphenol modified phenolic amide solidifying agent, comprises the steps:

[0050]Take tall oleic acid, polyvinylpolyamine, m-xylylenediamine, stir evenly, heat up to 200°C, keep warm for 3 hours, after the reaction, cool down to 50°C, add cardanol, paraformaldehyde, heat up to 110°C ℃, heat preservation reaction for 3 hours, then lower the temperature to 73℃, vacuum dehydrate until no water is evaporated, lower the temperature to 60℃, add 6.5 g of DMP-30, stir well, and obtain the curing agent product, also known as cardanol modified phenalkamide curing agent .

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Abstract

The invention discloses an alkylphenol modified phenolic amide curing agent and a preparation method thereof. The alkylphenol modified phenolic amide curing agent comprises the raw components including phenol or phenol derivatives, methanal or paraformaldehyde, polyamine and fatty acid or fatty acid polymer. The preparation method comprises the following steps of: uniformly mixing the fatty acid or the fatty acid polymer and the polyamine, heating the mixture, cooling the mixture, adding the phenol or the phenol derivatives in the mixture, uniformly mixing the methanal or the paraformaldehyde with the mixture, heating the new mixture, and performing dehydration on the new mixture to obtain the product; or the preparation method comprises the following steps of: uniformly mixing the phenol or the phenol derivatives, the polyamine and the methanal or the paraformaldehyde, heating the mixture, adding the fatty acid or the fatty acid polymer into the mixture, heating the new mixture, and performing the dehydration on the new mixture to obtain the product. The curing agent disclosed by the invention is very strong in salt spray corrosion resistance, is superior to polyamide curing agent and curing agent products of modified phenolic aldehyde amide resin and mixtures of the modified phenolic aldehyde amide resin, and has good impact strength and flexibility as well as excellent water tolerance.

Description

technical field [0001] The invention belongs to the field of synthetic resins, and relates to an alkylphenol-modified phenolic amide curing agent and a preparation method thereof. Background technique [0002] Epoxy resin is a widely used synthetic resin, especially in coatings and adhesives. After cross-linking and curing with curing agent, epoxy resin has excellent adhesion, mechanical properties, electrical properties and chemical corrosion resistance. It has been widely used in the field of steel structure anticorrosion. Curing agent is an indispensable and important component in the application field of epoxy resin, which, like epoxy resin, can determine the physical and mechanical properties of the cured product. At present, the commonly used room temperature curing agents are mainly amines and modified amine products, including aliphatic amines, alicyclic amines, aromatic amines, acid anhydrides, polyamides, etc. Due to its high volatility and strong toxicity, small...

Claims

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Application Information

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IPC IPC(8): C08G59/62C08G14/12C07C231/14C07C233/36C07C233/38
Inventor 戴志晟张凯傅绍军
Owner CARDOLITE CHEM ZHUHAI
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