Long-term stable color-changing oil pastel stick and preparation method thereof

An oil pastel and stable technology, applied in the field of long-term stable color-changing oil pastels and its preparation, can solve the problems of light resistance, heat resistance, aging resistance, etc. smooth effect

Active Publication Date: 2021-03-26
SHANGHAI M&G STATIONERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reversible thermochromic pigment itself is an unstable system, because it is difficult to change when it is stable, so its light resistance, heat resistance, aging resistance and other properties are far inferior to ordinary pigments, so you need to pay attention when using it

Method used

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  • Long-term stable color-changing oil pastel stick and preparation method thereof

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preparation example Construction

[0083] The preparation method of the long-term stable discoloration oil pastel of the present invention comprises:

[0084] Step (a): mixing and melting wax, hardening oil, white mineral oil and antioxidant, the melting temperature is 80-110°C, and the melting time is 60-120 minutes, and then the mixed wax liquid is obtained;

[0085] Step (b): Add temperature-sensitive discoloration material, ultraviolet light inhibitor and optional ordinary pigment to the mixed wax liquid obtained in step (a) and stir evenly, and heat while stirring, and the heating temperature is 70-90°C, stir for 30-60 minutes to obtain a homogeneous mixture;

[0086] Step (c): processing the homogeneous mixture obtained in step (b) into a fine granular semi-solid with a three-roll mill;

[0087] Step (d): heating the fine granular semi-solid obtained in step (c) to 70-90°C to completely melt it, adding fillers, and stirring for 30-60 minutes to obtain a uniform liquid slurry;

[0088] Step (e): The liqu...

Embodiment 1

[0097] The formula of the long-term stable discoloration oil pastel is as follows: 10 parts by weight of paraffin wax; 2 parts by weight of beeswax; 1 part by weight of Fischer-Tropsch wax; 9 parts by weight of hardened oil; 21.5 parts by weight of white mineral oil; 6 parts by weight of warm violet toner (T=31°C, t=28°C); 0.1 part by weight of 2,6-di-tert-butyl-4-methylphenol; and 0.05 part by weight of 4-methoxyphenol.

[0098] According to the above ratio, add paraffin wax, beeswax, Fischer-Tropsch wax, hardened oil, white mineral oil, 2,6-di-tert-butyl-4-methylphenol into the mixing tank for mixing and melting. The melting temperature is 80-110°C. The time is 60-120 minutes, and then the mixed wax liquid is obtained;

[0099] Add the temperature-sensitive violet toner and 4-methoxyphenol in the above ratio to the above mixed wax liquid and stir evenly, heat while stirring, the heating temperature is 70-90°C, stir for 30-60 minutes to obtain a uniform mixture ;

[0100] T...

Embodiment 2

[0107] The formula of the long-term stable discoloration oil pastel is as follows: 10 parts by weight of paraffin wax; 1 part by weight of microcrystalline wax; 9 parts by weight of hardened oil; 20 parts by weight of white mineral oil; 2.5 parts by weight of fast yellow 10G pigment; 49.35 parts by weight of calcium; 7 parts by weight of Turkish blue powder in the middle range of 30°C (T=30°C, t=8°C); 0.1 part by weight of 2,6-di-tert-butyl-4-methylphenol; and 4 - 0.05 parts by weight of methoxyphenol.

[0108] According to the above ratio, add paraffin wax, microcrystalline wax, hardened oil, white mineral oil, and 2,6-di-tert-butyl-4-methylphenol into the mixing tank for mixing and melting. The melting temperature is 80-110°C and the melting time is 60-120 minutes, then get mixed wax liquid;

[0109] Add the above-mentioned ratio of Fast Yellow 10G pigment, titanium dioxide, temperature-sensitive Turkish blue powder, and 4-methoxyphenol to the above-mentioned mixed wax liqu...

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Abstract

The invention provides a long-term stable color-changing oil painting stick and a preparation method thereof. The long-term stable color-changing oil painting stick comprises the following componentsin parts by weight: 10 to 20 parts of wax; 5 to 15 parts of hardened oil; 15 to 25 parts of white mineral oil; 0 to 15 parts of ordinary pigments; 40 to 55 parts of filler; 0.1 to 30 parts of temperature sensitive color-changing material; 0.01 to 1.5 parts of antioxidants; and 0.01 to 1 part of ultraviolet light inhibitor. The long-term stable color-changing oil painting stick of the invention hasthe outstanding advantages that the color can be changed along with the temperature, the long-term color-changing performance is stable, and the long-term stable color-changing oil painting stick isenvironment-friendly, nontoxic, bright in color and smooth in painting.

Description

technical field [0001] The invention relates to a painting tool material, in particular to a long-term stable discoloration oil pastel stick and a preparation method thereof. Background technique [0002] At present, temperature-sensitive color-changing materials have been widely used in daily necessities, such as temperature-sensitive color-changing cups, mobile phone cases, feeding bottles, lipsticks, clothing, pillows, towels, paper, paints, and various toys and decorations. The product is beautiful, interesting and has a special function of displaying temperature changes. In cultural and educational supplies, temperature-sensitive color-changing materials also have certain applications, such as the development of color-changing inks. However, in art supplies, the application of temperature-sensitive color-changing materials is still relatively rare, especially for painting tools such as oil pastels and crayons, and there has been no research and application of related t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/06C09D5/26C09D7/48C09D191/06C09D7/61
CPCC08K2003/265C08L2201/08C08L2205/025C08L2205/035C09D5/06C09D5/26C09D191/06C09D7/48C09D7/61C08L91/06C08L91/00C08K5/13C08K3/26
Inventor 郭亨长张超颖李学东姚鸿俊
Owner SHANGHAI M&G STATIONERY INC
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