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Preparation method for silver drop-proof thermoplastic acrylic resin

A technology of thermoplastic acrylic and resin, applied in metal-free paints, coatings, etc., can solve the problems of thickening, incompatibility, delamination, etc., and achieve the effect of excellent comprehensive performance

Inactive Publication Date: 2009-02-18
广东同步化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resin is severely incompatible with thermoplastic acrylic resins with low polarity and acid value, which leads to serious delamination, thickening and blackening quality problems in the production and storage of this type of silver paint

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Get 28 kilograms of xylenes, 8.5 kilograms of butanols and 7.5 kilograms of butyl acetate, mix and form A material;

[0032] Take 50 kg of methyl methacrylate, 10 kg of hydroxypropyl methacrylate, 8 kg of butyl methacrylate, 7 kg of ethyl methacrylate and the functional monomer 2-acrylamide-2-methylpropanesulfonate sodium 3 kg, mixed to make material B;

[0033] Get 1.5 kilograms of esterification catalyst dibutyltin dilaurate, as C material.

[0034] 1. Put A into the reaction kettle and stir evenly;

[0035] 2. Add material B dropwise, the reaction temperature in the reactor is controlled at 120±10°C, and the time for adding material B dropwise is controlled at 4.0 hours;

[0036] 3. After the dropwise addition, keep warm at 120±10°C for 5 hours;

[0037] 4. Add material C, keep warm at 120±10°C, and esterify for 3 hours;

[0038] 5. Cool down to less than 75°C and filter to obtain the silver-off-preventing thermoplastic acrylic resin of the present invention.

Embodiment 2

[0040] Get 25 kilograms of xylenes, 10 kilograms of butanols and 5 kilograms of butyl acetate, mix and form A material;

[0041] Take 45 kg of methyl methacrylate, 5 kg of hydroxypropyl methacrylate, 10 kg of butyl methacrylate, 5 kg of ethyl methacrylate and the functional monomer 2-acrylamide-2-methylpropanesulfonate sodium 2 kg, mixed into material B;

[0042] Get 1.0 kg of esterification catalyst dibutyltin dilaurate as material C.

[0043] 1. Put A into the reaction kettle and stir evenly;

[0044] 2. Add material B dropwise, the reaction temperature in the reactor is controlled at 120±10°C, and the time for adding material B dropwise is controlled at 3.5 hours;

[0045] 3. After the dropwise addition, keep warm at 120±10°C for 5 hours;

[0046] 4. Add material C, keep warm at 120±10°C, and esterify for 3 hours;

[0047] 5. Cool down to less than 75°C and filter to obtain the silver-off-preventing thermoplastic acrylic resin of the present invention.

Embodiment 3

[0049] Get 30 kilograms of dimethylbenzene, 7 kilograms of butanols and 10 kilograms of butyl acetate, mix and form A material;

[0050] Take 55 kg of methyl methacrylate, 15 kg of hydroxypropyl methacrylate, 5 kg of butyl methacrylate, 10 kg of ethyl methacrylate and the functional monomer 2-acrylamide-2-methylpropanesulfonate sodium 4 kg, mixed into B material;

[0051] Get 2.0 kilograms of esterification catalyst dibutyltin dilaurate, as C material.

[0052] 1. Put A into the reaction kettle and stir evenly;

[0053] 2. Add material B dropwise, the reaction temperature in the reactor is controlled at 120±10°C, and the time for adding material B dropwise is controlled at 4.5 hours;

[0054] 3. After the dropwise addition, keep warm at 120±10°C for 5 hours;

[0055] 4. Add material C, keep warm at 120±10°C, and esterify for 3 hours;

[0056] 5. Cool down to less than 75°C and filter to obtain the silver-off-preventing thermoplastic acrylic resin of the present invention. ...

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Abstract

The invention discloses a preparation method of sliver-dropping proof thermoplastic acrylic resin, comprising 1. feeding an A material into a reaction kettle and uniformly stirring; 2. dripping B material, controlling the reaction temperature in the reaction kettle between 110 DEG C and 130 DEG C and controlling the time of dripping the B material between 3.5 to 4.5 hours; 3. after dripping, keeping the temperature between 110 DEG C and 130 DEG C for 5 hours; 4. adding C material, insulating and esterifying for 5 hours; 5. cooling to below 75 DEG C and filtering; then the sliver-dropping proof thermoplastic acrylic resin is obtained. The sliver-dropping proof thermoplastic acrylic resin of the invention has the advantages that the sliver-dropping proofing effect is realized without adding sliver-dropping proof accessory ingredient. The invention also solves the problems of lay separation and pig skin during resin storing and constructing process, paint film blackening and bad compatibility with other resins.

Description

technical field [0001] The present invention relates to a kind of preparation method of acrylic resin, in particular, the present invention is a kind of preparation method of anti-silver thermoplastic acrylic resin. The characteristic of this acrylic resin is that the paint made of it and aluminum silver powder has anti-silver property on the ABS plastic base. Background technique [0002] ABS plastics are widely used in home appliances, decoration, daily necessities and other fields at home and abroad. This type of plastic has the advantages of being cheap, light, durable, and recyclable, but it also has some disadvantages, such as unsightly appearance, poor scratch resistance, and easy discoloration for external use. In order to overcome these defects, the method of surface spray painting is generally adopted in the market to overcome the shortcomings of its appearance. The main technical requirements of the paint film on the surface of these household appliances are hig...

Claims

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Application Information

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IPC IPC(8): C08F220/14C09D133/12C09D5/38
Inventor 米绍毅周治才刘志群郑业梅邹长源雷挺
Owner 广东同步化工股份有限公司
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