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Modified styrene-acrylate resin capable of prolonging uncovering time of thermal foaming ink

An acrylate and styrene technology, which is applied in the field of modified styrene-acrylate resin and its preparation, can solve the problems that the printing process cannot be interrupted for a long time, the plug is blocked, and the contact of the substrate surface is not reliable.

Active Publication Date: 2020-10-23
九度(上海)化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, due to the non-toxic and harmless characteristics of water as a solvent, researchers have carried out extensive research on it, but the existing water-based thermal foaming inks generally have unreliable contact with the surface of the substrate, and there The adhesion is low, which makes the printed products easy to fall off and other problems. At the same time, the existing thermal foaming ink generally takes a short time to open the cover, and the printing process cannot be interrupted for a long time, otherwise plugging will easily occur

Method used

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  • Modified styrene-acrylate resin capable of prolonging uncovering time of thermal foaming ink
  • Modified styrene-acrylate resin capable of prolonging uncovering time of thermal foaming ink

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preparation example Construction

[0062] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0063] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples can be obtained from commercial sources unless otherwise specified.

preparation example 1

[0065] Add the water of 36.5% mass fraction, the styrene-acrylic ester resin CSE-1000 of 60% mass fraction, the surfactant SR-10 of 1% mass fraction of Aidike Company in the four-necked bottle, stir and pass into nitrogen For protection, the water bath is heated to 80°C. When the temperature reaches 80°C, 2% mass fraction of the silane coupling agent KBM-503 and 0.5% mass fraction of the 5% KPS aqueous solution are added dropwise at a constant speed. The temperature is controlled to maintain 80-85°C, and the dropwise addition time is 1 hour. After completion of the dropwise addition, the temperature was maintained at 80° C. for 2 hours, and the temperature was lowered to room temperature. The modified styrene-acrylate resin was obtained as a white viscous liquid.

Embodiment 1

[0067] In the mixture of ethanol and water, add sodium hydroxide to adjust the pH=8.5, keep the temperature at 55°C under heating, slowly add the modified styrene-acrylic resin prepared in Preparation Example 1 or Aurfon 5022 (solid form) or styrene - Acrylate resin CSE-1000 (in solid form) until it is fully dissolved. Cool to room temperature to form a resin solution. Mix in pigment, Megafac R-47, and other solvents in turn, mix well, rotate at 1000rpm, mix thoroughly for 30 minutes, add drier and mix for 5 minutes, see Table 1 for specific proportions.

[0068] The mixed ink was left overnight, filtered, and filled into HP ink cartridge packages. After 24 hours, print the test on the BOPP film, monitor the process, and after the writing is dry, slide your finger to evaluate the adhesion of the writing. The test scoring criteria and results are shown in Table 2. The result evaluation scores in Table 2 are between 1 and 10, where 1 is the worst and 10 is the best.

[0069] ...

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Abstract

The invention provides a modified styrene-acrylate resin capable of prolonging uncovering time of thermal foaming ink. The modified styrene-acrylate resin is obtained by a reaction or of a compositioncomprising the following components in percentage by mass or obtained by mixing of the following components: 30-90% of styrene-acrylate resin, 0.5-20% of a silane coupling agent and / or fluororesin, 0.01-2% of a surface active agent and 0.001%-2% of an initiator, with the balance being water. The modified styrene-acrylate resin is added into a mixed system with ethanol as a main solvent, so the uncovering time of the ink can be greatly prolonged, interruption time in printing process can reach 30 minutes or more, and the phenomenon of blocking cannot occur; meanwhile, the adhesive force of thesolvent type thermal foaming ink with ethanol as the main solvent to a base material can be improved, and particularly, excellent adhesive force is obtained on a low-surface-tension base material; printed handwriting is clear, good in adhesive force and resistant to wiping; and meanwhile, the ink has comprehensive printing performance required by thermal foaming ink.

Description

technical field [0001] The invention belongs to the technical field of printing ink, and in particular relates to a modified styrene-acrylic resin for prolonging the opening time of thermal foaming ink, its preparation method and application. Background technique [0002] Thermal foam printing technology is a printing technology invented by Hewlett-Packard Company in the United States. The main working principle is that the ink is heated instantly inside the nozzle, and bubbles are generated after heating. . The inks used in this printing process are collectively referred to as thermal foaming inks, which require printing fluency, intermittent printing performance, no plugging, and wipe resistance and durability after printing. It is generally divided into two types: solvent-based and water-based. Solvent-based thermal foaming inks generally use ethanol and ketones as the main solvent, while water-based thermal foaming inks use water as the main solvent. [0003] At prese...

Claims

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Application Information

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IPC IPC(8): C09D11/30C09D11/36
CPCC09D11/30C09D11/36
Inventor 谢海燕
Owner 九度(上海)化学有限公司
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