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A kind of alkylphenol modified phenolic amide curing agent and preparation method thereof

A technology of phenolic amide and curing agent, which is applied in the field of alkylphenol-modified phenolic amide curing agent and its preparation, can solve the problems of easy yellowing, poor impact resistance, etc. Long, excellent water resistance effect

Active Publication Date: 2016-08-24
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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  • A kind of alkylphenol modified phenolic amide curing agent and preparation method thereof
  • A kind of alkylphenol modified phenolic amide curing agent and preparation method thereof
  • A kind of 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 ℃, heat preservation reaction for 3 h, then heated up to 150°C for dehydration for 30 min, cooled to 60°C, added 6.2 g of DMP-30, and stirred evenly to obtain a 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 raw material components contain phenol or phenol derivatives, formaldehyde or paraformaldehyde, polyamines, fatty acids or fatty acid polymers. The preparation method includes: Mix fatty acid or fatty acid polymer, polyamine, heat up reaction, cool down, add phenol or phenol derivative, formaldehyde or paraformaldehyde, mix, heat up reaction, dehydrate to obtain product; or mix phenol or phenol derivative, polyamine, Formaldehyde or paraformaldehyde is mixed evenly, the reaction is heated up, fatty acid or fatty acid polymer is added, the reaction is heated up and dehydrated to obtain the product. The curing agent of the invention has strong resistance to salt spray corrosion, and its performance is better than that of polyamide curing agents, modified phenalkamine resins and their mixtures. The curing agent of the invention has good impact strength, flexibility and excellent performance. water resistance.

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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Patent Type & Authority Patents(China)
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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