Composition for preparing waterless offset printing plate silica gel layer and preparation method thereof

A technology of silica gel layer and composition, applied in coating, protein coating, conductive coating, etc., can solve the problems of silica gel layer being easy to wear, difficult to clean, and easy to absorb ink skin.

Inactive Publication Date: 2020-10-30
柳州市盛杰彩印有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a composition for preparing the silica gel layer of an anhydrous offset printing plate in view of the problems that the ink skin is easy to absorb but difficult to clean, and the silica gel layer is easy to wear and cause low printing resistance in the waterless offset printing plate and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A composition for preparing the silica gel layer of an anhydrous offset printing plate, comprising the following raw materials in parts by weight: 35 parts of Sapphire fruit, 150 parts of petroleum ether, 10 parts of peach gum, 40 parts of hydrochloric acid solution, and 100 parts of absolute ethanol , 5 parts of cicada slough, 35 parts of ozone water, 0.2 part of hydrogen peroxide, 30 parts of guanidine salt ionic liquid, 6 parts of octyl polymethicone, 1 part of graphene oxide, 0.5 part of coconut shell extract and di-tert-butyl 0.06 parts of peroxide; the molar concentration of hydrochloric acid solution is 0.1mol / L, the concentration of ozone water is 0.2mg / L, and the mass fraction of hydrogen peroxide is 2%.

[0035] Wherein, the preparation method of guanidinium salt ionic liquid is: according to the ratio by weight, get 25 parts of 1-ethyl-3-guanidinothiourea hydrochloride, after adding 50 parts of ethanol aqueous solution to dissolve, then add 4 parts of oxalic a...

Embodiment 2

[0045] A composition for preparing the silica gel layer of an anhydrous offset printing plate, comprising the following raw materials in parts by weight: 55 parts of Sapphire fruit, 350 parts of petroleum ether, 20 parts of peach gum, 60 parts of hydrochloric acid solution, and 200 parts of absolute ethanol , 15 parts of cicada slough, 53 parts of ozone water, 0.8 parts of hydrogen peroxide, 50 parts of guanidine salt ionic liquid, 16 parts of octyl polymethicone, 3 parts of graphene oxide, 1.5 parts of coconut shell extract and di-tert-butyl 0.4 parts of peroxide; the molar concentration of hydrochloric acid solution is 0.5mol / L, the concentration of ozone water is 1mg / L, and the mass fraction of hydrogen peroxide is 10%.

[0046] Wherein, the preparation method of guanidinium salt ionic liquid is: according to weight ratio, get 35 parts of 1-ethyl-3-guanidinothiourea hydrochloride, after adding 70 parts of ethanol aqueous solution, add 12 parts of oxalic acid and 9 parts of ...

Embodiment 3

[0056] A composition for preparing the silica gel layer of an anhydrous offset printing plate, comprising the following raw materials in parts by weight: 40 parts of Sapphire fruit, 200 parts of petroleum ether, 13 parts of peach gum, 45 parts of hydrochloric acid solution, and 125 parts of absolute ethanol , 7 parts of cicada slough, 39 parts of ozone water, 0.3 parts of hydrogen peroxide, 35 parts of guanidine salt ionic liquid, 8.5 parts of octyl polymethicone, 1.5 parts of graphene oxide, 0.8 parts of coconut shell extract and di-tert-butyl 0.14 parts of peroxide; the molar concentration of hydrochloric acid solution is 0.2mol / L, the concentration of ozone water is 0.4mg / L, and the mass fraction of hydrogen peroxide is 4%.

[0057] Wherein, the preparation method of guanidinium salt ionic liquid is: according to the ratio by weight, get 27 parts of 1-ethyl-3-guanidinothiourea hydrochloride, after adding 55 parts of ethanol aqueous solution to dissolve, then add 6 parts of o...

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Abstract

The invention provides a composition for preparing a waterless offset printing plate silica gel layer and a preparation method thereof, and particularly relates to the technical field of printing plates. A colloidal extract is extracted from ficus pumila fruits and peach gum, the colloidal extract, purified cicada slough and octyl polymethylsiloxane are subjected to a gamma-ray irradiation reaction in guanidine salt ionic liquid, and then graphene oxide, a coconut shell extract and di-tert-butyl peroxide are added to prepare the anhydrous offset printing plate silica gel layer composition. Thecomposition is used for preparing a gel layer of the waterless offset printing plate, so that the waterless offset printing plate is good in insulativity, tough, wear-resistant, not easy to adsorb ink skin and particles, and not easy to damage during printing friction, printed matters are not easy to get dirty and fall off from a screen, and the printing endurance of the waterless offset printingplate is effectively improved to more than 140000 prints. The method is stable and controllable in process, easy to implement and suitable for large-scale production.

Description

【Technical field】 [0001] The invention relates to the technical field of printing plates, in particular to a composition for preparing a silica gel layer of an anhydrous offset printing plate and a preparation method thereof. 【Background technique】 [0002] Waterless offset printing is a flat gravure printing technology. It does not use water or traditional fountain solution during printing, but uses a printing plate with a non-ink-friendly silicone rubber surface, special ink and a set of temperature control system. Because of the use of fountain solution in traditional offset printing, water is involved in the printing process. If the "water-ink balance" is not well grasped, it will bring many quality problems, and the fountain solution and developer used contain volatile organic compounds. It will be discharged into the air during the printing process, causing environmental pollution. Compared with traditional offset printing technology, waterless offset printing has the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D105/00C09D183/04C09D105/08C09D189/00C09D5/25C09D7/20C09D7/65C09D7/61C09D5/24C09D7/63
CPCC08L2201/04C08L2205/025C08L2205/035C09D5/00C09D5/24C09D105/00C09D7/20C09D7/61C09D7/63C09D7/65C08L83/04C08L5/08C08L89/00C08L1/02C08L97/005C08L91/06C08K13/04C08K7/26C08K3/042C08K5/14
Inventor 张志安胡荣根
Owner 柳州市盛杰彩印有限公司
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