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Pigment composition for laser marking, resin composition containing same, and preparation method thereof

A technology of pigment composition and resin composition, which is applied in the direction of pigment slurry, etc., can solve the problems of highly toxic chemical substances or other by-products, unclear white marks, pollution of the environment, etc., and achieve reduced production procedures, easy operation, and preparation The effect of simple method

Inactive Publication Date: 2011-12-28
深圳市佳宇源油漆颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Japanese Patent Publication No. 2001-302922 discloses a resin combination for laser marking comprising ABS resin, maleimide-based copolymer, cyanide vinyl copolymer, iron oxide as a black pigment, and other coloring agents However, when the resin composition is used for laser marking, the white mark of the marked product is not clear, which is due to the deposition of carbon residues on the surface of the marked product, resulting in yellowing
[0006] In addition, in order to achieve the ideal clarity of marking, most of the pigment molecular structures used in laser marking contain halogen elements, so when these printed and colored materials are burned, highly toxic chemicals or other by-products may be produced, thereby polluting surroundings

Method used

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  • Pigment composition for laser marking, resin composition containing same, and preparation method thereof
  • Pigment composition for laser marking, resin composition containing same, and preparation method thereof
  • Pigment composition for laser marking, resin composition containing same, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1, preparing the pigment composition for laser marking

[0034] First weigh 650kg of black pigment without halogen elements, 100kg of anti-yellowing agent, 50kg of wear-resistant powder, 1kg of anti-sensitizer, 50kg of dispersant, 10kg of pigment purple and 10kg of pigment blue, and heat the mixture in the reaction kettle to make it Mix evenly, control the temperature at 90° C., heat for 5 hours, and then dry the mixture by spray drying method to remove moisture to obtain block, and then grind the block into powder.

[0035] Step 2, preparing a resin composition with laser marking properties

[0036] First weigh 750kg of ABS resin, 4kg of pigment composition for laser marking prepared in step 1, 30kg of oily dispersant and 40kg of powdery dispersant, put the mixture into a high-speed mixing tank and mix for 20 minutes; The mixture is put into a dryer, the temperature of the dryer is controlled at 70°C, and the drying time is 3 hours. After drying, the material is ...

Embodiment 2

[0042] Step 1, preparing the pigment composition for laser marking

[0043] First weigh 900kg of black pigment without halogen elements, 50kg of anti-yellow agent, 10kg of wear-resistant powder, 2kg of anti-sensitizer, 10kg of dispersant, 5kg of pigment purple and 5kg of pigment blue, and heat the mixture in the reaction kettle to make it Mix evenly, control the temperature at 80° C., heat for 4 hours, and then dry the mixture by spray drying method to remove moisture to obtain block, and then grind the block into powder.

[0044] Step 2, preparing a resin composition with laser marking properties

[0045] First weigh 700kg of transparent ABS resin, 240kg of transparent PMMA resin, 5kg of pigment composition for laser marking prepared in step 1, 30kg of oily dispersant and 40kg of powdery dispersant, and put the mixture into a high-speed mixing tank for mixing 20 minutes; put the well-stirred mixture into a dryer, the temperature of the dryer is controlled at 80°C, and the dr...

Embodiment 3

[0051] Step 1, preparing the pigment composition for laser marking

[0052] First weigh 700kg of black pigment without halogen elements, 100kg of anti-yellow agent, 50kg of wear-resistant powder, 1kg of anti-sensitizer, 50kg of dispersant, 1kg of pigment purple and 1kg of pigment blue, and heat the mixture in the reaction kettle to make it Mix evenly, control the temperature at 80° C., heat for 4 hours, and then dry the mixture by spray drying method to remove moisture to obtain block, and then grind the block into powder.

[0053] Step 2, preparing a resin composition with laser marking properties

[0054] First weigh 700kg of transparent ABS resin, 240kg of transparent PMMA resin, 4kg of pigment composition for laser marking prepared in step 1, 20kg of oily dispersant, 50kg of powdery dispersant, put the mixture into a high-speed mixing tank and mix and stir 20 minutes;

[0055] Put the well-stirred and well-mixed mixture into a dryer. The temperature of the dryer is contr...

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Abstract

The invention provides a pigment for laser marking, a resin composition containing the pigment and a preparation method thereof. The pigment composition is composed of the following components in percentage by weight: 65% to 95% of black pigment, 3% to 15% of anti-yellowing agent %, 1% to 10% of wear-resistant powder, 0.05% to 0.5% of anti-sensitizer and 1% to 10% of dispersant, and the molded products made of resin composition containing the pigment have wear-resistant effect after laser marking Good, soft to the touch, beautiful and generous fonts; and the whiteness of the fonts is whiter than that of printing and plating, without yellowing, anti-allergic, anti-bacterial, anti-acid and alkali, retort-resistant, non-fading, and widely used.

Description

technical field [0001] The invention relates to the field of laser marking, in particular to a pigment for laser marking, a resin composition containing the pigment and a preparation method thereof. Background technique [0002] When preparing plastic parts for card machines, telephones, computer keyboards, keycaps, air conditioners, DVDs, electric fans, aviation plastic parts, computers, various keys in automobiles and fax machines, it is necessary to form characters on the surface of these plastic products or pattern. In the prior art, printing and printing or ink printing are mostly used. This traditional mimeograph method is not only complicated to operate, but also has low work efficiency, high cost, easy to pollute the environment, and is not suitable for large-scale production and processing; and, this traditional method The mimeograph method cannot work on irregular platforms, especially it cannot form characters or patterns in hidden places such as slits or opening...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00C08L55/02
Inventor 唐光明
Owner 深圳市佳宇源油漆颜料有限公司
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