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Epoxy-group-containing solid resin, and preparation method and application thereof

A solid resin and epoxy-based technology, applied in coatings, powder coatings, etc., can solve problems such as hazards, sodium chloride production, and environmental pollution, and achieve environmental friendliness, low curing temperature, and good mechanical properties.

Active Publication Date: 2015-04-29
姚林生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the harm to the human body in contact with food, the production process produces sodium chloride, and the environmental pollution caused by water washing, etc.

Method used

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  • Epoxy-group-containing solid resin, and preparation method and application thereof
  • Epoxy-group-containing solid resin, and preparation method and application thereof
  • Epoxy-group-containing solid resin, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Toluene (260 g) and epoxidized soybean oil (10.7 g) were added to a 1000 mL glass multi-necked reaction flask equipped with a stirrer, thermometer, distillation column and two dropping funnels. Methyl methacrylate (218.4 g), n-butyl acrylate (68.9 g), glycidyl methacrylate (72.8 g), styrene (20.0 g) and chain regulator dodecyl were then added to a funnel. Mixture I of mercaptans (2.0 g). A mixture II of toluene (160.0 g) and the initiator dibenzoyl peroxide (14.0 g) was added to another funnel. Heat up the temperature and stir, open the distillation column to cool the water, add the mixed solution I and the mixed solution II dropwise at 100-105°C at the same time, and drop them completely within 1 hour. Then keep warm at 110-125°C for 3 hours. After the double bond is not reduced by infrared or chemical method, the temperature is raised to 170°C, and the vacuum is gradually evacuated. 30 minutes. In addition to the negative pressure, the material is discharged into a...

Embodiment 2

[0033] Toluene (300 g) and epoxidized soybean oil (150 g) were added to a 1000 mL glass multi-necked reaction flask with stirring, thermometer, distillation column and two dropping funnels. A mixture I of styrene (150 g), methyl methacrylate (156 g) and chain regulator tert-hexadecyl mercaptan (5.0 g) was then added to a funnel. Mixture II of toluene (160.0 g) and initiator azobisisobutyronitrile (14.0 g) was added to another funnel. Heat up the temperature and stir, open the distillation column to cool the water, add the mixed solution I and the mixed solution II dropwise at 80-95°C at the same time, and drop them completely within 1 hour. Then keep it warm at 115-125°C for 3 hours. After the double bond is not reduced by infrared or chemical method, heat up to 170°C, gradually vacuumize, change negative pressure to remove solvent, until 170°C / -0.09Mp above, keep 30 minutes. In addition to the negative pressure, the material is discharged into a stainless steel plate while ...

Embodiment 3

[0036] In a 1000 mL glass multi-necked reaction flask with stirring, thermometer, distillation column and two dropping funnels, add xylene (280 g) and epoxy linseed oil (70 g). Next, a mixture I of methyl methacrylate (280 g), n-butyl acrylate (70 g) and chain regulator n-dodecyl mercaptan (3.0 g) was added to a funnel. A mixture II of xylene (160.0 g) and initiator dibenzoyl peroxide (21 g) was added to another funnel. Heat up and stir, turn on the distillation column to cool water, add the mixed solution I and the mixed solution II dropwise at 105-120°C at the same time, the two are dropped simultaneously within 1 hour, and the temperature at the top of the distillation column does not exceed 30°C. Then keep warm at 125-130°C for 3 hours. After the double bond is not reduced by infrared or chemical method, the temperature is raised to 170°C, and the vacuum is gradually pumped, and the negative pressure is used to remove the solvent until it is above 170°C / -0.09Mp. 30 minute...

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Abstract

The invention discloses an epoxy-group-containing solid resin which is prepared by carrying out solution polymerization on the following three monomers in percentage by weight: 6-92% of monomer A, 0-86% of monomer B and 2-40% of monomer C. The monomer A is acrylate and / or methacrylate; the monomer B is a vinyl monomer; and the monomer C is epoxy unsaturated polyfunctional group ester and / or epoxy unsaturated polyfunctional group ether. The epoxy-group-containing solid resin product and production process are environment-friendly, are free from the restrictions of the use region, and are low in cost. The solid resin can be matched with the existing material formula by an existing device technique to manufacture a thermosetting powder paint, and the prepared powder paint has high performance.

Description

(1) Technical field [0001] The invention relates to an epoxy group-containing solid resin, its preparation method, and its application as a film former in thermosetting powder coatings. (2) Background technology [0002] At present, the epoxy resin used in powder coatings is basically an E-type epoxy resin synthesized by bisphenol A and epichlorohydrin, and bisphenol A epoxy resin with a degree of polymerization n=3-4 is also commonly used abroad. Because the molecular structure contains bisphenol A, although it has certain excellent performance, it also brings many doubts. Such as the harm to the human body in contact with food, the production process produces sodium chloride, and the environmental pollution caused by washing with water and so on. The present invention avoids the above-mentioned problems and is environmentally friendly. The epoxy-containing solid resin of the present invention has a suitable epoxy equivalent range and a good softening point range, and is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/32C08F212/08C08F2/38C09D133/12C09D125/14C09D5/03
Inventor 姚林生吴侃姚雨嘉
Owner 姚林生
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