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Acrylate resin containing hyperbranched structure and preparation method thereof

An acrylate, branched structure technology, applied in polyester coatings, coatings, etc., can solve the problems of high cost and long reaction time, and achieve the effect of low viscosity characteristics

Inactive Publication Date: 2018-05-29
CHANGZHOU INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that the reaction time is too long and the cost is high

Method used

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  • Acrylate resin containing hyperbranched structure and preparation method thereof
  • Acrylate resin containing hyperbranched structure and preparation method thereof
  • Acrylate resin containing hyperbranched structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment one: the synthesis of polyester type hyperbranched monomer

[0043]Example 1 Using xylene as a solvent, add 92 grams of glycerin to the flask, add 296 grams of phthalic anhydride in batches at 100°C for 0.5 hours to make it react slowly, gradually raise the temperature to 140°C, keep at reflux for 10 minutes and then cool down. 98 grams of maleic anhydride was added at 100°C, and the temperature was gradually raised to reflux and kept for 10 minutes. Cool down and add 402 grams of trimethylolpropane, raise the temperature to reflux state, keep the esterification until the acid value is below 5 mgKOH / g, then add 244 grams of benzoic acid and 200 grams of lauric acid, and continue to reflux to esterify to the acid value below 5 mgKOH / g.

[0044] see figure 1 , is the molecular structure diagram of the polyester type hyperbranched monomer of the present embodiment, and the hydroxyl value and acid value analysis of the intermediate product in the synthesis proce...

Embodiment 2

[0051] Embodiment two: the synthesis of polyester type hyperbranched monomer

[0052] Using xylene as a solvent, add 92 grams of glycerin to the flask, add 292 grams of adipic acid in batches at 100°C for 0.5 hours to make it react slowly, gradually raise the temperature to 140-240°C and reflux until the acid value reaches the specified value, cool down, 100 98 g of maleic anhydride was added at ℃, and the temperature was gradually raised to reflux state and kept for 10 minutes. Cool down and add 402 grams of trimethylolpropane, raise the temperature to reflux state, keep the esterification until the acid value is below 5 mgKOH / g, then add 244 grams of benzoic acid and 200 grams of lauric acid, and continue to reflux to esterify to the acid value below 5 mgKOH / g.

Embodiment 3

[0053] Embodiment three: the synthesis of polyester type hyperbranched monomer

[0054] Using xylene as a solvent, add 92 grams of glycerin to the flask, add 296 grams of phthalic anhydride in batches at 100°C for 0.5 hours to make it slowly react, gradually increase the temperature at 140°C and keep it under reflux for 10 minutes, then cool down, add 98 grams at 100°C Maleic anhydride, gradually warming up to reflux state, keeping for 10 minutes. Cool down and add 402 grams of trimethylolpropane, raise the temperature to reflux state, keep the esterification until the acid value is below 5 mgKOH / g, then add 244 grams of benzoic acid and 284 grams of stearic acid, continue to reflux and esterify to the acid value below 5 mgKOH / g.

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Abstract

The invention discloses acrylate resin containing a hyperbranched structure and a preparation method thereof. Two kinds of hyperbranched macromonomers, namely a polyester type hyperbranched macromonomer and a poly(ester-amide) type hyperbranched macromonomer, with internal double bonds and external reactive functional groups such as hydroxyl groups and carboxyl groups are synthesized by a stepwiseexpansion method. The hyperbranched macromers and a synthesis process thereof are characterized by an infrared measurement method, a GPC measurement method, an acid value measurement method and a hydroxyl number measurement method and other methods. The synthesized two hyperbranched macromonomers are applied to synthesis of acrylic resin, and the acrylate resin with an ultra-high branching structure and lower viscosity is prepared. The resin can be used for preparing high-solid-content self-drying coatings, high-solid-content baking coatings and high-solid-content two-component room temperature curing coatings and used as adhesives. The organic solvent content of the acrylate resin during production and use can be effectively reduced, the pollution to the environment can be reduced, and the performance is excellent.

Description

technical field [0001] The invention relates to the preparation of vinyl-containing hyperbranched macromonomers, the copolymerization of hyperbranched macromonomers and acrylate monomers, and the application of the copolymerized products in high-solid coatings and adhesives. Background technique [0002] In the coating and adhesive industry, acrylate resin is widely used because of its many excellent properties (such as weather resistance, light transmittance, softness, chemical stability, etc.). Traditional acrylate resins are linear polymers obtained by chain polymerization of vinyl monomers. Therefore, at higher concentrations, the intermolecular entanglement is serious, and it has greater movement resistance, which is manifested as higher flow viscosity, thus Difficulties in its direct use. In addition, some active functional groups in the molecular structure are covered by long chains, resulting in reduced reactivity due to steric hindrance. Therefore, the acrylate re...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F283/04C08G63/52C08G83/00C08G69/44C09D167/06C09D161/32
Inventor 陈华林王红丹
Owner CHANGZHOU INST OF CHEM
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