Paint slag regenerating process

A paint waste and solvent technology, applied in the removal of solid waste, coating and other directions, can solve the problems of unsatisfactory effect of recycled products, unrecycled resources, and too simple recycling methods.

Inactive Publication Date: 2007-03-21
山东建筑大学材料科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are reports that special equipment is used for pyrolysis and burning of paint waste residues. Although this technology handles waste residues, the resources cannot be reused, and it may cause secondary pollution such as the atmosphere; the current recycling method is too simple. The utilization rate is not high, the effect of recycled products is not ideal, and it is difficult to realize industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put the alkyd resin paint residue into the reaction kettle, add 1:2 solvent according to the mass ratio, the solvent is 200# solvent gasoline, after mechanical stirring for 30 minutes, vacuum distillation for 30 minutes, the distillation range is controlled below 60 °C. Then use solvent to dilute to the construction viscosity.

[0021] Adhesion / circle method

Embodiment 2

[0023] Put amino alkyd resin paint waste residue into the reaction kettle, add 1:2 solvent according to the mass ratio, the solvent is a mixture of isopropanol and isobutanol with a volume ratio of 4:1, stir for 30 minutes, then distill under reduced pressure for 30 minutes , the distillation range is controlled below 90°C, and then diluted with a solvent to the construction viscosity.

[0024] Adhesion / circle method

Embodiment 3

[0026] Put the waste residue of acrylic resin paint into the reaction kettle, add a solvent of 1:2 according to the mass ratio, the solvent is a mixture of butyl acetate, ethanol, and xylene with a volume ratio of 6:2:2, stir for 30 minutes, and distill under reduced pressure 30 minutes, the thermoplastic resin is controlled below 60°C, the thermosetting resin is controlled below 100°C, and then diluted with a solvent to the construction viscosity.

[0027] Adhesion / circle method

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PUM

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Abstract

The present invention is paint slag regenerating process and belongs to the field of waste utilizing technology. The paint slag regenerating process includes the following steps: mixing paint slag with organic solvent, homogenizing and dispersing, vacuum distilling, crushing and filtering, regulating viscosity, and packing the product. The present invention can regenerate paint slag produced during painting to produce paint reach the quality standard of the paint so as to realize the reuse of waste.

Description

technical field [0001] The invention relates to the field of waste slag utilization, in particular to a method for regenerating paint waste slag. Background technique [0002] Solvent-based paint usually adopts high-pressure air spraying, high-pressure airless spraying, electrostatic spraying and other construction methods. The primary utilization rate of paint is generally between 50% and 85%. Especially when high-pressure air spraying is used, the utilization rate of paint varies with the shape of the workpiece. There are some differences, but generally not more than 60%. Therefore, during the construction process, a large amount of paint is wasted, a large amount of organic waste residue is produced, and the environment is polluted. Paint waste has become a major burden and problem for manufacturers of automobiles, agricultural vehicles, motorcycles, and household appliances. [0003] At present, there are reports that special equipment is used for pyrolysis and burning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00B09B3/00
Inventor 冯立明郑培学
Owner 山东建筑大学材料科学研究所
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