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Thermosetting water ultraviolet isolating paint and coating therefrom

A UV, thermosetting technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of low hardness of the coating film, easy to scratch, etc., to achieve the effect of excellent coating film hardness

Inactive Publication Date: 2007-05-09
JTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This acrylic coating liquid material for UV protection is excellent in transparency, UV absorption, water resistance, and adhesion to glass, but has the disadvantage of low hardness of the coating film and easy scratches

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] The preparation method of the coating of the present invention is to add and mix (B) ultraviolet absorber dissolved in a specific solvent in (A) water-based polyurethane resin, after dissolving ultraviolet absorber in polyurethane resin, mix additives such as leveling agent as required, First, an ultraviolet blocking coating is prepared. At this time, water or the like is added as appropriate to adjust to a predetermined solid content concentration. Then, (C) amino resin is added, it stirs, it mixes uniformly, and (D) adhesiveness improving agent is mixed and stirred, and the coating liquid of this invention is prepared. At this time, the addition order of (C) amino resin and (D) adhesive improvement agent may be reversed, and may be added simultaneously. Next, it is purified by filtration with, for example, a filter with a pore size of 1 μm. Furthermore, the solid content concentration of the coating material of the present invention can be appropriately adjusted by ...

Embodiment 1

[0054] (Selection of water-based polyurethane resin)

[0055] Coat various water-based polyurethane resins on a transparent glass plate, dry at room temperature, and heat at 100°C for 1 hour to form a coating film. From these coating films, select a coating film with a pencil hardness greater than or equal to H. Next, immerse the selected coating film in water, ethanol, toluene, 10% NaOH aqueous solution, and 10% acetic acid aqueous solution at room temperature for 5 days. Polyurethane resin I (Adeka Bontaita-HUX-232 manufactured by Asaden Chemical Industry Co., Ltd.).

[0056] (Preparation of Coating A)

[0057] With respect to 100 parts by weight of the solid content of the above-mentioned water-based polyurethane resin I, 30 parts by weight of benzotriazole-based ultraviolet absorber TINUVIN 1130 manufactured by Chiba Specialty Chemicals Co., Ltd. was mixed in the water-based polyurethane resin I. Water in which a polysiloxane-based leveling agent was dissolved was added ...

Embodiment 2

[0068] (Selection of water-based polyurethane resin)

[0069] According to the selection criteria of Example 1, HD-8261 manufactured by Hautaway Company was selected as the waterborne polyurethane resin II.

[0070] (Preparation of Coating C)

[0071] 50 parts by weight of benzotriazole-based ultraviolet absorber TINUVIN 1130 from Chiba Specialty Chemicals Co., Ltd. was mixed with water-based polyurethane resin II with respect to 100 parts by weight of solid content of water-based polyurethane resin II. Water in which a silicone-based leveling agent was dissolved was added and mixed therein to prepare a total solid content concentration of 25%, and then filtered through a filter with a pore diameter of 1 μm to prepare a paint C.

[0072] Coating the coating C on a transparent glass plate so that the film thickness after drying is 10 μm, the coating film dried at room temperature has a barrier of greater than or equal to 90% to ultraviolet rays less than or equal to 380nm, and...

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PUM

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Abstract

This invention discloses a thermosetting waterborne UV-obstructing paint and its coating film. The paint is dispersed in water, and composed of: solid polyurethane resin 100 parts, UV-absorbent 5-150 parts, amino resin 3-100 parts, and sealing improver 0.01-20 parts. The solid content is 5-60 wt. %. The coating film has excellent hardness, heat resistance, water resistance and drug resistance, and has no stimulation to human bodies or environment.

Description

technical field [0001] The present invention relates to an ultraviolet blocking coating suitable for applications requiring hardness, heat resistance, water resistance, and chemical resistance of the coating film. UV-blocking coatings and coating films obtained therefrom. Background technique [0002] In recent years, people have strongly recognized the harmfulness of ultraviolet rays to the human body, and strongly expect its protection. Furthermore, methods for effectively preventing deterioration, deterioration, and discoloration of beverages, foods, and the like due to ultraviolet rays have been extensively studied, including various parts and materials made of plastics. [0003] As an example of this preventive method, there is proposed a so-called blending method in which ultraviolet absorbers are mixed into plastic components, materials, and containers for food and beverages. This mixing method can prevent components, materials, and containers from deteriorating due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/00
Inventor 冈本孝士一宫正喜
Owner JTS CO LTD
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