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Glass paint based on lac resin, preparation and use thereof

A shellac resin and glass paint technology, applied in the field of coatings, can solve the problems that coatings cannot meet the mass production of assembly lines, poor glass adhesion, and high baking temperature, and achieve excellent gloss and toughness, strong adhesion, and uniform gloss. Effect

Inactive Publication Date: 2009-05-27
江苏柏鹤涂料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As disclosed in CN101050259, "Water-Soluble Acrylic Resin for Glass Paint and Its Preparation" uses epoxy-modified acrylic resin as a film-forming material, which improves the problems of poor boiling resistance, low hardness and poor glass adhesion of water-soluble acrylic resin to a certain extent. However, the resin is modified by epoxy, and the process is more complicated.
[0004] Although CN1031386A discloses " polyolefin type transparent colored glass coating " aspect adhesion force, hardness, water resistance are improved to some extent, but owing to a large amount of use methyl methacrylate, hard monomers such as styrene, paint film is more brittle, cutting abrasive The edge of the paint film is prone to peeling off
Two-component construction also complicates the process
[0005] CN1272517A discloses "Making of Colored Glass Coatings and Colored Filmed Glass" which can be solidified and formed into a film by baking at 180-220°C for 15-20 minutes. The baking temperature is not only high but also the baking time is long
Considering that the drying conditions of the stained glass production line are generally 3-5 minutes at 130-150°C, this coating cannot meet the requirements of mass production on the assembly line
[0006] CN1948200A disclosed "water-based color transparent glass coating and its preparation method and application" adopts water-based resin, the cost is higher, and still needs to add organic solvent butanol in the solvent
In addition, the product can only achieve 24 hours of water resistance, the performance is not enough

Method used

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  • Glass paint based on lac resin, preparation and use thereof
  • Glass paint based on lac resin, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation stage before glass paint preparation:

[0022] First weigh 50kg of flake shellac resin and 50kg of ethanol, pour it into a container and stir continuously until all is dissolved, then pour it out and store it in a corresponding container for later use;

[0023] Then weigh 75 kg of the 50% shellac resin, 11 kg of the 60% cross-linked resin high imino melamine resin, 5 kg of the coloring pigment iron red, 3 kg of the body pigment barium sulfate, 1 kg of talc, and 5 kg of solvent ethanol. stand-by.

[0024] Glass paint preparation stage

[0025] First, mix the shellac resin, solvent, coloring pigment and extender pigment uniformly and sand to a fineness of 25μm or less, then add 11 parts of cross-linked resin, stir for 10-15 minutes to form a uniform color coating, and obtain a glass paint after discharging. . The prepared glass paint has a total weight of 100 kg, a solid content of 53±1%, and a viscosity: 120-160s (coating-4 cups, 25°C).

[0026] Construction stag...

Embodiment 2

[0031] Preparation stage before glass paint preparation:

[0032] First, weigh 50 kg of flake shellac resin and 50 kg of ethanol, pour them into a container and stir continuously until all are dissolved, and store them in a corresponding container for later use.

[0033] Then weigh 50 kilograms of the above 50% shellac resin, 10 kilograms of 60% cross-linked resin butyl etherified melamine resin, 4 kilograms of coloring pigment (carbon black), 10 kilograms of barium sulfate, 10 kilograms of calcium carbonate, and solvent ethanol. 16 kilograms for use.

[0034] Glass paint preparation stage

[0035] Firstly, the shellac resin, solvent, coloring pigment and extender pigment are evenly mixed and sanded to a fineness of 25μm or less, then cross-linked resin is added, and the color coating is formed after the mixing is uniform, and the glass paint is obtained after the material is discharged. The total weight of the prepared glass paint is 100 kilograms. The solid content is 55±1%, and...

Embodiment 3

[0040] Preparation stage before glass paint preparation:

[0041] First, weigh 50 kg of flake shellac resin and 50 kg of ethanol, pour them into a container and stir continuously until all are dissolved, and store them in a corresponding container for later use.

[0042] Then weigh 80 kilograms of the 50% shellac resin, 5 kilograms of coloring pigment (carbon black), and 15 kilograms of solvent ethanol for use.

[0043] Glass paint preparation stage

[0044] Stir the shellac resin, solvent and coloring pigments evenly and sand to the fineness below 25μm to obtain the glass paint. The total weight of the prepared glass paint is 100 kilograms. Solid content 45±1%, viscosity: 120-160s (tu-4 cup, 25℃);

[0045] Construction stage of glass paint:

[0046]Dilute the obtained glass paint with ethanol solvent to a viscosity of 30-60s (coated -4 cups, 25°C), spread or spray on a clean glass plate, and bake at 150°C for 5 minutes to solidify into a film. A paint film with high gloss was obt...

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Abstract

The invention relates to a coating. A glass paint based on lac resin is a single-component paint, and a main film-forming substance is the lac resin or a composition of the lac resin and crosslinked resin which are mixed according to the weight ratio of not less than 1:1. The glass paint adopts the natural lac resin as the film-forming substance, improves the comprehensive utilization rate of renewable resources, and is an environment-friendly product. The glass paint can adopt ethanol as a solvent, so as to greatly reduce environmental pollution during construction and use. The glass paint has simple technique and simple and convenient operation due to adoption of single-component construction. When the glass paint is painted on the glass surface, the glass paint can be cured into a film after being roasted for 3 to 5 minutes at a temperature of between 130 and 150, and the generated paint film has strong adhesion, good water resistance, strong corrosion resistance and good flexibility and is hard.

Description

1. Technical Field: [0001] The present invention relates to paints, especially glass paints used for coating glass surfaces. 2. Background technology: [0002] At present, glass paint is mainly used for decorative glass. With the improvement of people's living standards, the pursuit of beauty becomes stronger. Colored glass paint meets the market demand with its unique colorful decorative effects. Glass paint products should have good Adhesion, corrosion resistance, high hardness, and flexibility. In addition, because decorative colored glass is mainly used for interior decoration, the glass paint is required to be environmentally friendly and less polluting the indoor environment. At present, the glass paints on the market mainly come from petrochemical products, and the solvents used are mainly xylene, butanol and other toxic solvents. These solvents emitted during the production process can cause environmental pollution, while remaining in the paint film can cause pollution to...

Claims

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Application Information

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IPC IPC(8): C03C17/32
Inventor 包柏青何建生杨二霞周加祥庄玉珍许继光
Owner 江苏柏鹤涂料有限公司
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