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Automotive coating based on organic fluorine unsaturated polyester resin emulsion and preparation method of automotive coating

A polyester resin, unsaturated technology, applied in the direction of polyester coatings, coatings, anti-corrosion coatings, etc., can solve the problems of poor hydrophobicity, poor corrosion resistance, high baking temperature, etc., to achieve not easy to crack, strong corrosion resistance, Excellent anti-corrosion effect

Active Publication Date: 2018-05-15
日照德联化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the prior art has the disadvantages of poor corrosion resistance, poor hydrophobic durability, low hardness and high baking temperature.

Method used

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  • Automotive coating based on organic fluorine unsaturated polyester resin emulsion and preparation method of automotive coating
  • Automotive coating based on organic fluorine unsaturated polyester resin emulsion and preparation method of automotive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing an organic fluorine type unsaturated polyester resin emulsion X, characterized in that, in parts by weight, comprising the following steps:

[0025] (1) 20 parts of undecafluorotrimethylolpropane, 5 parts of decafluoroneopentyl glycol, 5 parts of octafluorobutanediol, 10 parts of tetrafluorophthalic anhydride, 25 parts of difluoromaleic anhydride 1. Put 5 parts of xylene into the reaction device, heat to 160°C for 6 hours under stirring; Continue to react at 180°C for 3 hours until the acid value is 55±5mgKOH / g, and then remove the solvent by distillation under reduced pressure to obtain a hydrophilic organic fluorine type unsaturated polyester resin;

[0026] (2) Emulsification: cool down the hydrophilic organic fluorine type unsaturated polyester resin to 60°C, add 5 parts of triethylamine for neutralization reaction, and then add 0.4 parts of allyl sulfoalkoxy succinic acid The diester sodium salt and 150 parts of deionized water were disperse...

Embodiment 2

[0028] A method for preparing an organic fluorine-type unsaturated polyester resin emulsion Y, characterized in that, in parts by weight, comprising the steps of:

[0029] (1) 10 parts of undecafluorotrimethylolpropane, 10 parts of decafluoroneopentyl glycol, 10 parts of octafluorobutanediol, 20 parts of tetrafluorophthalic anhydride, 15 parts of difluoromaleic anhydride 10 parts of xylene were put into the reaction device, and heated to 120°C for 8 hours under stirring; then the temperature was raised to 160°C, and 15 parts of polytetramethylene ether glycol was added to the reaction device to continue the reaction for 4 hours, at a temperature of 120°C Continue to react for 5h until the acid value is 45±5mgKOH / g, and remove the solvent by distillation under reduced pressure to obtain a hydrophilic organic fluorine type unsaturated polyester resin;

[0030] (2) Emulsification: cool down the hydrophilic organic fluorine type unsaturated polyester resin to 30°C, add 10 parts of...

Embodiment 3

[0032] A method for preparing an organic fluorine-type unsaturated polyester resin emulsion Z, characterized in that, in parts by weight, comprising the steps of:

[0033] (1) 13 parts of undecafluorotrimethylolpropane, 7 parts of decafluoroneopentyl glycol, 9 parts of octafluorobutanediol, 18 parts of tetrafluorophthalic anhydride, 21 parts of difluoromaleic anhydride , Put 6 parts of xylene into the reaction device, heat to 140°C for 6.5 hours under stirring; then raise the temperature to 175°C, add 11 parts of polytetrahydrofuran ether glycol into the reaction device to continue the reaction for 3 hours, and continue the reaction at a temperature of 140°C 3-5h until the acid value is 47±5mgKOH / g, and the solvent is removed by distillation under reduced pressure to obtain a hydrophilic organic fluorine type unsaturated polyester resin;

[0034] (2) Emulsification: cool down the hydrophilic organic fluorine type unsaturated polyester resin to the inverse emulsification transi...

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PUM

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Abstract

The invention relates to an automotive coating based on organic fluorine unsaturated polyester resin emulsion and a preparation method of the automotive coating. The automotive coating is composed ofthe following substances in parts by weight: a component A comprising 50-80 parts of organic fluorine unsaturated polyester resin emulsion, 10-15 parts of an active film-forming agent, 0.2-0.5 part ofa cationic surfactant, 0.6-1.2 parts of a dispersing agent, 0.2-0.5 part of a flatting agent, 1-2 parts of a thickening agent, 0.2-0.5 part of an antifoaming agent, 0-10 parts of water-based color paste, 10-35 parts of pigments and fillers, 0.5-0.8 part of an ultraviolet light absorber and 10-30 parts of deionized water; a component B of 5-10 parts of an initiator solution with the mass fractionof 10-20%; and a component C of 4-8 parts of a reducing agent with the mass fraction of 20-40%. The automotive coating disclosed by the invention has the advantages that (1) an unsaturated water-basedresin taking fluorine-carbon bonds as the base is disclosed first, and the automotive coating is excellent in hydrophobic effect, high in corrosion resistance and excellent in antiseptic property; (2) when cured by an oxidation-reduction initiator system, the automotive coating is high in cross-linking degree and hardness; and (3) due to the selected active film-forming agent, the automotive coating is high in film-forming property and difficult to crack.

Description

technical field [0001] The invention relates to a water-based automobile paint, in particular to an automobile paint based on an organic fluorine unsaturated polyester resin emulsion and a preparation method thereof, belonging to the technical field of water-based paint. technical background [0002] Strict environmental regulations have been enacted at home and abroad to limit the emission of volatile organic compounds (VOC) into the atmosphere. High performance and environmental protection have become the development direction of coatings. Car paint is a kind of protective film sprayed on the car. It is a kind of paint, which makes the car body not easy to be corroded, and gives people a beautiful evaluation; the main characteristics of the performance of car paint: good fullness of the paint film , high gloss, high hardness, good adhesion, the paint film has excellent mechanical properties, excellent gloss retention, weather resistance, abrasion resistance, good acid resi...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D7/61C09D7/63C09D7/65C09D5/08C08G63/682C08G63/78
CPCC08G63/6828C08G63/78C08K2003/2241C09D5/08C09D167/06C08L1/02C08L75/04C08L33/00C08K13/02C08K5/19C08K5/521C08K3/22C08K5/3475C08K3/34C08K5/3435C08K5/132
Inventor 朱佳媚
Owner 日照德联化工有限公司
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