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UV-curable colored paint composition

A technology of colored coatings and compositions, applied in the field of UV curable colored coating compositions, which can solve the problems of energy consumption, time-consuming, semi-drying, etc., and achieve the effects of high production efficiency, low cost, and low energy consumption

Active Publication Date: 2010-02-24
JIANGSU KUANGSHUN PHOTOSENSITIVITY NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The coating method of the above-mentioned two-coat or three-coat type not only consumes energy, is time-consuming, requires a large production space, and has disadvantages such as high cost
Therefore, the industry hopes to develop a coating composition that can achieve both aesthetics and performance by one-time coating. For example, Taiwan Patent No. I290566 discloses a pearl paint ultraviolet coating composition for one-time spraying. A beautiful appearance can be obtained by one-time construction, but it is limited to the use of translucent pearlescent paint. If it is changed to non-transparent solid-color pigments, UV light cannot penetrate the coating due to the light-blocking properties of the pigments. Therefore, during the curing process, it is easy to cause the problem that the coating film is not dry or semi-dry
[0010] If the coating composition is to be applied to a construction, it is often because the color paint resin system and the UV resin are not compatible, so the color is not easy to control, and it is easy to cause poor adhesion, and the color material has the property of shielding light, resulting in UV light cannot be used. Smooth penetration, making UV resin difficult to cure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Table 1

[0079]

[0080] Add the diluent (butyl acetate / toluene / ethylene glycol monobutyl ether = 2 / 2 / 1 (volume ratio)) to the Iwata cup of the composition obtained above for about 10 seconds, and spray it on the plastic substrate with an air spray gun. Then pre-bake in an oven at 60°C for 5 to 10 minutes, and then pass through a medium-pressure mercury lamp (800mJ / cm 2 ) for exposure. Then, the substrate with the coating film after exposure is subjected to a physical property test.

[0081] The physical test results are as follows:

[0082] The coating film forms a coating film of 12-20μm

[0083] Adhesion between coating film and substrate: 100 / 100

[0084] Coating film hardness: ≥H

[0085] Coating film gloss: 65

[0086] Coating film heat resistance: pass (appearance without cracks, peeling off)

[0087] Appearance: flat, with a black semi-matte effect.

Embodiment 2

[0089] Table 2

[0090]

[0091] Add the diluent (butyl acetate / toluene / ethylene glycol monobutyl ether = 2 / 2 / 1 (volume ratio)) to the Iwata cup of the composition obtained above for about 10 seconds, and spray it on the plastic substrate with an air spray gun. Then pre-bake in an oven at 60°C for 5 to 10 minutes, and then pass through a medium-pressure mercury lamp (800mJ / cm 2 ) for exposure. Then, the substrate with the coating film after exposure is subjected to a physical property test.

[0092] The results of the physical property test are as follows:

[0093] The coating film forms a coating film of 10-15 μm

[0094] Adhesion between coating film and substrate: 100 / 100

[0095] Coating film hardness: ≥H

[0096] Coating gloss: 85

[0097] Coating film heat resistance: pass (appearance without cracks, peeling off)

[0098] Appearance: Flat with a pearly semi-gloss effect.

Embodiment 3

[0100] table 3

[0101]

[0102] Add the diluent (butyl acetate / toluene / ethylene glycol monobutyl ether = 2 / 2 / 1 (volume ratio)) to the Iwata cup of the composition obtained above for about 10 seconds, and spray it on the plastic substrate with an air spray gun. Then pre-bake in an oven at 60°C for 5 to 10 minutes, and then pass through a medium-pressure mercury lamp (800mJ / cm 2 ) for exposure. Then, the substrate with the coating film after exposure is subjected to a physical property test.

[0103] The results of the physical property test are as follows:

[0104] The coating film forms a coating film of 20-25μm

[0105] Adhesion between coating film and substrate: 100 / 100

[0106] Coating film hardness: ≥HB

[0107] Coating film gloss: 90

[0108] Coating film heat resistance: pass (appearance without cracks, peeling off)

[0109] Appearance: flat, with blue full light effect.

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PUM

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Abstract

The invention relates to a UV-curable colored paint composition which comprises (a) a low polymer containing at least one unsaturated double bond; (b) a diluted monomer; (c) a light initiator; (d) thermoplastic acrylic resin; and (e) a pigment. The paint composition of the invention can be applied in a one-time construction mode to obtain high-performance coatings with rich colors. Compared with the traditional two-layer or three-layer application mode, the invention can provide high production efficiency, low energy consumption, low manufacturing cost and low possibility of generation of wastes.

Description

technical field [0001] The invention relates to a UV (ultraviolet) curable colored paint composition, in particular to a UV curable colored paint composition for one-time spraying. Background technique [0002] At present, various electronic or electrical products, such as digital cameras, notebook computers, mobile phones, auto parts, etc., and cosmetics, have been widely used in people's lives. The casings of such products are mostly made of plastic, which has the advantages of easy molding, low cost, light weight, and non-corrosion, but has disadvantages such as unsightly, easy to age, poor mechanical properties, poor heat resistance, and high water absorption. After the casing is processed and formed, it is often necessary to coat the surface with protective and / or decorative coatings. [0003] In the past, most of the coating methods for plastic substrates required two-coating and two-baking or three-coating and three-baking procedures, that is, the primer was sprayed ...

Claims

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Application Information

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IPC IPC(8): C09D4/06
Inventor 黄鸿文曾俊杰张爱春王维理
Owner JIANGSU KUANGSHUN PHOTOSENSITIVITY NEW MATERIAL
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