Glass heat insulation paint of water-based hydroxyl polyurethane resin and preparation method thereof

A technology of hydroxyl polyurethane and thermal insulation coatings, applied in the direction of polyurea/polyurethane coatings, coatings, etc., to achieve the effect of broad application prospects

Active Publication Date: 2010-01-27
武汉双虎涂料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is aimed at the defects of existing glass heat-insulating coatings

Method used

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  • Glass heat insulation paint of water-based hydroxyl polyurethane resin and preparation method thereof
  • Glass heat insulation paint of water-based hydroxyl polyurethane resin and preparation method thereof
  • Glass heat insulation paint of water-based hydroxyl polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Under the protection of nitrogen, combine 10.600g isophthalic acid-5-sodium sulfonate, 35.157g adipic acid, 29.274g neopentyl glycol, 11.844g 2-ethyl-2-butyl 1,3- Propylene glycol was put into a four-neck reactor with stirring, nitrogen gas pipe, thermometer, condenser and water separator, heated to 140°C, stirred, slowly heated to 200°C, and kept at 200°C for 1 hour. Start to measure the acid value. When the acid value drops to 5mgKOH / g resin, the xylene is removed under vacuum at 100℃, the vacuum degree is ≥0.040Kpa, the temperature is 50-80℃, and the vacuum is dried under reduced pressure for 1-2 hours to obtain the hydrophilic type. Hydroxy-terminated polyester (A).

[0041] (2) Add 20.12g of the above hydrophilic hydroxyl-terminated polyester (A), 5.248g of 1,4-cyclohexanedimethanol, and 2.844g of trimethylolpropane to a stirrer, thermometer, nitrogen gas pipe, and condenser. In the four-neck reactor under 110℃, first vacuum pump for 1 hour, and the vacuum degree...

Embodiment 2

[0057] (1) Under the protection of nitrogen, put 12.630g isophthalic acid-5-sodium sulfonate, 48.147g isophthalic acid, 29.247g 1,4-butanediol, 11.634g hexanediol into a stirring, In a four-neck reactor consisting of a thermometer, a nitrogen gas pipe, a condenser tube and a water separator, the temperature was raised to 140°C, stirred, and slowly raised to 200°C, and kept at 200°C for 1 hour. Start to measure the acid value. When the acid value drops to 5mgKOH / g resin, the xylene is removed under vacuum at 100℃, the vacuum degree is ≥0.040Kpa, the temperature is 50-80℃, and the vacuum is dried under reduced pressure for 1-2 hours to obtain the hydrophilic type. Hydroxy-terminated polyester (A).

[0058] (2) Add 21.150g of the above hydrophilic hydroxyl-terminated polyester (A), 8.247g of 2-ethyl-2-butyl 1,3-propanediol, and 3.244g of trimethylolpropane to a stirrer, thermometer, In a four-port reactor with nitrogen gas duct and condenser, at 110°C, vacuum pump water for 1 hour ...

Embodiment 3

[0073] (1) Under the protection of nitrogen, put 13.250g of hydroxymethylpropionic acid, 28.157g of isophthalic acid, 29.247g of adipic acid, 25.634g of hexanediol, 24.300g of 1,4 cyclohexanedimethanol and stirring , Thermometer, nitrogen gas pipe, condenser and water separator in a four-port reactor, heat up to 140°C, stir, slowly heat up to 190°C, and keep it at 190°C for 1 hour. Start to measure the acid value. When the acid value drops to 46mgKOH / g resin, the xylene is removed in vacuum at about 100℃. After the reaction is completed, vacuum drying is carried out for 1-2 hours, the vacuum degree is ≥0.040Kpa, and the temperature is 50-80℃. , Namely the hydrophilic hydroxyl-terminated polyester (A).

[0074] (2) Add 28.356g of the above hydrophilic hydroxyl-terminated polyester (A), 4.258g 1,4 cyclohexanedimethanol, and 3.944g trimethylolpropane to the one equipped with a stirrer, thermometer, nitrogen gas pipe and condenser In a four-port reactor, vacuum pump water for 1 hour...

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Abstract

The invention discloses a glass heat insulation paint of water-based hydroxyl polyurethane resin and a preparation method thereof. The glass heat insulation paint is prepared by mixing the raw materials by weight percent: 15-76% of water-based hydroxyl polyurethane, 20-60% of nano sizing agent, 0.5-4.0% of water-based auxiliary agent, 0.50-3.0% of silane coupling agent and 3-18% of water-based curing agent; wherein the structural formula of the water-based hydroxyl polyurethane is shown above, A section is hydrophile type end hydroxyl polyester with the molecular number of 1-5; J section is polyisocyanate with the molecular number of 5-15; and the G section is dibastic alcohol with the molecular number of 5-10. The invention has the advantages of high transmission of light and thermal insulation, good water resistance, strong adhesive force when being coated on glass, and being not easy to fall off.

Description

Technical field: [0001] The invention relates to a water-based nano thermal insulation functional paint used on a glass substrate. Specifically, it is a water-based hydroxy polyurethane resin glass heat insulation coating and a preparation method. The invention creatively synthesizes water-based hydroxy polyurethane resin by introducing hydrophilic monomers into polyester polyols, and uses this resin to be compounded with nano-size slurry, silane coupling agent, functional additives, and water-based curing agent to prepare a A high-performance water-based two-component glass insulation coating. Background technique: [0002] With the continuous intensification of the greenhouse effect, energy and environmental crises have become increasingly apparent. In order to solve the heat insulation problems in the fields of buildings and automobiles, a lot of research work has been carried out at home and abroad. Currently, the energy-saving glass on the market mainly includes heat-refle...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D5/00C09D7/12
Inventor 文风陈俊廖笠王兰玲
Owner 武汉双虎涂料股份有限公司
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