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Polyester modified hydroxyl type fluorinated acrylate resin and preparation method thereof

A technology for modification of fluorinated acrylate and polyester, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problem of mechanical properties, surface gloss and fullness not reaching high decoration, complex synthesis process, high cost, etc. problems, to achieve the effect of low production technology requirements, excellent performance and high solid content

Inactive Publication Date: 2014-01-01
JIANGSU BLUESTAR GREEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional fluororesins use tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, and perfluoropropylene as fluoromonomers. The synthesis process is complicated, and the synthesis requires high pressure, which has high requirements on equipment, operation process, and safety. requirements, so the cost is also higher
At the same time, the traditional fluororesin cannot meet the high decorative requirements in terms of mechanical properties, surface gloss and fullness, which also limits the application of traditional fluororesin coatings in the fields of automobiles and furniture.

Method used

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  • Polyester modified hydroxyl type fluorinated acrylate resin and preparation method thereof
  • Polyester modified hydroxyl type fluorinated acrylate resin and preparation method thereof
  • Polyester modified hydroxyl type fluorinated acrylate resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]In the first step, under nitrogen protection, 100g 1,4-cyclohexanedicarboxylic acid, 100g phthalic anhydride, 100g neopentyl glycol, 50g 2-ethyl-2-butyl-1,3-propanediol, 36g trimethylol Add propane monoallyl ether, 20g xylene, and 0.077g dibutyltin oxide into a four-port reactor equipped with stirring, thermometer, nitrogen gas guide pipe, condenser pipe and water separator, raise the temperature to 140°C, and put the When reflux begins and drops of water begin to appear in the water separator, slowly raise the temperature to 200°C (heating time is 4 hours), and keep warm at 200°C for 1 hour. Start to measure the acid value. When the acid value drops to 5mgKOH / g resin, cool down to 80°C, dilute with xylene to a solid content of 80%, filter with a 400-mesh nylon mesh, and obtain double-terminal hydroxyl-containing polyester-1. Its hydroxyl value is 71mgKOH / g (resin);

[0030] In the second step, add 100g of the above-mentioned unsaturated hydroxyl-terminated polyester-1 ...

Embodiment 2

[0041] (1) Under nitrogen protection, mix 76g of adipic acid, 20g of maleic anhydride, 100g of phthalic anhydride, 101.6g of neopentyl glycol, 60g of 1,4-cyclohexanedimethanol, and 32g of trimethylolpropane monoallyl ether , 20g xylene and 0.085g dibutyltin oxide were added to a four-port reactor equipped with stirring, thermometer, nitrogen gas guide pipe, condenser pipe and water separator, and the temperature was raised to 140°C until reflux began in the condenser pipe, and When there are drops of water in the water separator, slowly raise the temperature to 200°C (the heating time is 5 hours), and after keeping the temperature at 200°C for 1 hour, start to measure the acid value, and when the acid value drops to 5mgKOH / g resin, cool down to 80 ℃, diluted with xylene to a solid content of 80%, and filtered through a 400-mesh nylon mesh to obtain double-terminal hydroxyl-containing polyester-2, with a hydroxyl value of 56 mg KOH / g (resin);

[0042] (2) Put 100g of the above-...

Embodiment 3

[0046] (1) Under nitrogen protection, 106g 1,4 cyclohexanedicarboxylic acid, 20g maleic anhydride, 86g phthalic anhydride, 101.6g neopentyl glycol, 38.2g 2-ethyl-2-butyl-1,3-propanediol, 32g trimethylolpropane monoallyl ether, 20g dimethylbenzene, 0.085g dibutyltin dilaurate add in the four-port reactor that has stirring, thermometer, nitrogen air guide pipe, condenser pipe and water separator, heat up When the temperature reaches 140°C, there is reflux in the condensation pipe, and there are drops of water in the water separator, slowly raise the temperature to 200°C (heating time is 5 hours), and start to measure the acid value after holding at 200°C for 1 hour. When the acid value drops to 5mgKOH / g resin, lower the temperature to 80°C, dilute with xylene to a solid content of 80%, and filter through a 400-mesh nylon mesh to obtain double-terminal hydroxyl-containing polyester-3. Its hydroxyl value is 105mg KOH / g (resin);

[0047] (2) Put 100g of the above-mentioned double-...

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Abstract

The invention discloses polyester modified hydroxyl type fluorinated acrylate resin and a preparation method thereof. On the basis of double-bond hydroxyl type polyester, (methyl) acrylics, (methyl) fluorinated acrylics, (methyl) acrylic acid and hydroxyl (methyl) acrylate monomers are subjected to graft copolymerization through solution polymerization, and hybridization of fluorinated acrylate resin and polyester resin is realized; and during preparation of fluorine resin, the polyester resin is introduced creatively to perform hybridizing modification on the fluorine resin, features of the fluorine resin are kept while the cost of the fluorine resin is reduced, meanwhile, the solid content is higher, and the resin has the better environmental protection performance. Used synthetic raw materials are common raw materials, the requirements for a production technology are not high, the synthesis cost of the fluorine resin is low, the performance of 2KPU (two-component polyurethane) varnish prepared with the fluorine resin is excellent, and prepared coatings are applicable to various base materials such as wood products, metals, plastics, concrete and the like.

Description

Technical field: [0001] The invention relates to a polyester-modified hydroxyl type fluorinated acrylate resin used for substrates such as cement, wood and metal, and a preparation method thereof. The invention synthesizes a new type of fluororesin with wide application and high cost performance by introducing unsaturated double bonds into the polyester macromolecular chain and copolymerizing it with fluorine-containing acrylate monomers. Background technique: [0002] Although foreign fluorine coatings have been developed for more than 20 years, the variety is still relatively single, and the performance of coatings needs to be improved. Although my country has made some progress, compared with foreign countries, there is still a big gap in the performance of coatings. Due to the low polarity of the F-C bond in the fluorocarbon resin, the fluorocarbon polymer has low surface energy. Compared with other resins, the fluorocarbon resin has excellent water resistance, oil repe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F220/22C08F220/14C08F220/18C08F220/06C08F220/28C08G63/676C09D175/04
Inventor 闫福安张伟华陈建海谈良
Owner JIANGSU BLUESTAR GREEN TECH
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