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Special low temperature adhesion promoter for PVC plastisol and preparation thereof

An adhesion promoter, low temperature technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of aging, reduce the protection effect, the electrophoretic paint board is easily corroded, and achieve a low curing temperature. , the effect of high adhesion

Inactive Publication Date: 2008-12-24
匡建钢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PVC plastisol is widely used in the protection of automobile body steel plates. Adhesion is a main characteristic index of PVC plastisol. When PVC plastisol is sprayed on the surface of electrophoretic paint board, if the adhesion is poor, its protective effect will be greatly reduced, resulting in electrophoresis. The paint board is easy to be corroded, and an adhesion promoter is usually added in the preparation process of PVC plastisol to improve the adhesion of PVC plastisol. The curing conditions of common adhesion promoter are: 140℃~150℃ / 30min, The temperature is high, and it is easy to cause the reaction between other components in the accelerator during curing, resulting in aging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add fatty acid into the reactor, raise the temperature to 220°C and keep it warm for 4 hours, add N-aminoethylpiperazine and diethylenetriamine, then continue to react for 1.5 hours under vacuum conditions, cool down to 140°C after the reaction, add diluent agent, stir evenly and cool to room temperature to obtain the adhesion promoter. The percentages of the amounts of the above-mentioned components to the mass of the synthetic product are 30% for fatty acid, 50% for N-aminoethylpiperazine, 20% for tetraethylenepentamine and 35% for diluent.

Embodiment 2

[0014] Add fatty acid into the reactor, raise the temperature to 235°C and keep it warm for 5.5 hours, add N-aminoethylpiperazine and triethylenetetramine, then continue to react for 2.5 hours under vacuum conditions, cool down to 155°C after the reaction, add diluent agent, stir evenly and cool to room temperature to obtain the adhesion promoter. The percentages of the amounts of the above components to the mass of the synthetic product are respectively 20% for fatty acid, 40% for N-aminoethylpiperazine, 40% for diethylenetriamine and 45% for diluent.

Embodiment 3

[0016] Add fatty acid into the reactor, raise the temperature to 245°C and keep it warm for 3 hours, add N-aminoethylpiperazine and tetraethylenepentamine, then continue to react for 1 hour under vacuum conditions, cool down to 180°C after the reaction, add diluent agent, stir evenly and cool to room temperature to obtain the adhesion promoter. The percentages of the amounts of the above-mentioned components to the mass of the synthetic product are 45% for fatty acid, 35% for N-aminoethylpiperazine, 55% for triethylenetetramine and 25% for diluent.

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Abstract

The invention relates to a low temperature type adhesive force promoter exclusively for PVC plastisol. As the promoter has a relatively lower curing temperature, the promoter can improve the adhesive force of the PVC plastisol without affecting the reaction of other compositions of the plastisol. Therefore, the invention also provides a preparation method thereof. The promoter comprising polyamide polyamine is characterized in that: the polyamide polyamine has 60 to 75 percent of imidazoline content and has an amine value of between 290 and 310 mg KOH / g; the polyamide polyamine is prepared from fatty acid, ethyleneamine and N-aminoethyl piperazine; the fatty acid is made by the self polymerization of unsaturated fatty acid containing 10 to 24 carbon atoms; and the structural formula of ethyleneamine is H2N(CH2CH2NH)nCH2CH2NH2. The preparation method comprises the following steps of: adding fatty acid into a reactor, heating the fatty acid up to between 220 and 260 DEG C, and keeping the temperature for 3 to 7 hours; adding ethyleneamine and N-aminoethyl piperazine into the reactor for continuing to react for 1 to 3 hours under the condition of vacuum pumping; cooling down the reacted solution to between 140 and 180 DEG C after the reaction is finished; and adding a diluent into the reacted solution for stirring evenly, and cooling down the solution to room temperature to obtain the adhesive force promoter.

Description

technical field [0001] The invention relates to the technical field of production of PVC plastisol ingredients, in particular to a special low-temperature adhesion promoter for PVC plastisol and a preparation method thereof. Background technique [0002] PVC plastisol is widely used in the protection of automobile body steel plates. Adhesion is a main characteristic index of PVC plastisol. When PVC plastisol is sprayed on the surface of electrophoretic paint board, if the adhesion is poor, its protective effect will be greatly reduced, resulting in electrophoresis. The paint board is easy to be corroded, and an adhesion promoter is usually added in the preparation process of PVC plastisol to improve the adhesion of PVC plastisol. The curing conditions of common adhesion promoter are: 140℃~150℃ / 30min, The temperature is high, and it is easy to cause the reaction between other components in the accelerator during curing, resulting in aging. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): C09J11/08C09J127/06
Inventor 匡建钢
Owner 匡建钢
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