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Novel accelerant and curing agent, preparation method and application thereof

A technology of accelerator and curing agent, used in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., can solve problems such as unhelpful curing time

Inactive Publication Date: 2013-05-15
林登科 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US Patent No. 6,229,054 discloses a method for the production of cardanol by hydroxyalkylation to improve the color stability of cardanol, but it does not help the curing time

Method used

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  • Novel accelerant and curing agent, preparation method and application thereof
  • Novel accelerant and curing agent, preparation method and application thereof
  • Novel accelerant and curing agent, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Example 1: Mannich condensation reaction of cardanol, para-formaldehyde and dimethylamine to synthesize dimethylaminomethyl cardanol

[0071] Prepare a 1-liter four-pot equipped with a thermometer, a Teflon stirrer, and a Dean-Stark h-shaped water trap. A 4-necked round bottom flask; wherein the Dean-Stark H-type water separator is connected to a condenser and a nitrogen gas supplying valve is connected to the 4-necked round bottom flask . The four-neck round bottom flask was filled with 300 grams of cardanol (about 1 mole) and 115 grams of dimethylamine (about 1 mole) at a concentration of 40% by weight, and was placed in a fume hood (ventilation hood) with Stirring is carried out under the environment of dry nitrogen, and the temperature of this four-neck round bottom flask is controlled at 50 ℃ for about 1 hour, then 75 grams of formalin (formalin) with a concentration of 40% by weight (about 1.0 mole) is added slowly into a four-neck round bottom flask. The afore...

Embodiment 2

[0073] Example 2: Mannich condensation reaction of cardanol, p-formaldehyde and diethylamine to synthesize bis(diethylaminomethyl)cardanol

[0074] Prepare a four-neck round bottom flask with a capacity of 1 liter equipped with a thermometer, a Teflon stirrer, a Dean-Stark h-type water separator; where the Dean-Stark h A water separator was connected to a condenser and a nitrogen supply valve was connected to a four-neck round bottom flask. The four-neck round bottom flask is filled with 300 grams of cardanol (about 1.0 moles) and 148 grams of diethylamine (about 2.0 moles) with a concentration of 99% by weight, and has an environment of dry nitrogen in a fume hood Under stirring, the temperature of the four-necked round-bottomed flask was controlled at 65°C for about 30 minutes, and then 150 grams of formalin with a concentration of 40% by weight (about 2.0 moles) was slowly added to the four-necked round-bottomed flask . The aforementioned substances were slowly heated to ...

Embodiment 3

[0076] Embodiment 3: Cardanol, p-formaldehyde and diethylamine carry out Mannich condensation reaction to synthesize bis(diethylaminomethyl) cardol (bis(diethylaminomethyl)cardol)

[0077] Prepare a four-neck round bottom flask with a capacity of 1 liter equipped with a thermometer, a Teflon stirrer, a Dean-Stark h-type water separator; where the Dean-Stark h A water separator was connected to a condenser and a nitrogen supply valve was connected to a four-neck round bottom flask. The four-neck round bottom flask is filled with 316 grams of cardanol (about 1.0 moles) and 148 grams of diethylamine (about 2.0 moles) at a concentration of 99% by weight, and is placed in a fume hood with dry nitrogen. Stirring under ambient conditions, the temperature of the four-necked round-bottomed flask was controlled at 65°C for about 30 minutes, and then 150 grams of formalin with a concentration of 40% by weight (about 2.0 moles) was slowly added to the four-necked round-bottomed flask mid...

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Abstract

The invention relates to a novel accelerant and a novel curing agent, a preparation method and an application thereof. The preparation method of the novel accelerant comprises: providing at least natural cardanol or artificial cardanol compound which has a chemical structural formula as shown in a formula VIII, wherein R is C15H2X+1, X is an integer between 12 and 15, and Z is H or OH; providing an aldehydes compound; providing an alkyl amine compound which has secondary amine; mixing the cardanol compound, the aldehydes compound and the alkyl amine compound, heating, and performing a mannich condensation reaction to form the accelerant. The invention further relates to the novel accelerant and the novel curing agent.

Description

technical field [0001] The present invention relates to a kind of preparation method of curing agent or accelerator, especially a kind of method that utilizes Mannich condensation reaction and transamination reaction to prepare curing agent or accelerator, and the present invention also relates to using said method and extracting Curing agent and accelerator derived from cashew nut shell liquid, which is a curing agent and accelerator applied to epoxy resin, polyurethane resin, polyurea resin and other materials. Background technique [0002] Epoxy resin, polyurethane and polyurea are important materials for coating protection on the surface of industrial floors or decoration on commercial floors , especially as the most famous industrial anti-corrosion coating, and the coating needs to be carried out at room temperature. [0003] On the other hand, most epoxy resin coatings cured at room temperature use modified polyamine as a curing agent. However, in cold climates (such...

Claims

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Application Information

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IPC IPC(8): C08K5/17C08G59/62C08G73/02C08L75/04C08L75/02C07C213/02C07C215/50
Inventor 林登科林哲修
Owner 林登科
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