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Silicone composition for printing plates, lithographic printing plate master, lithographic printing plate and method of producing printed matter

A technology of silicone composition and lithographic printing plate, applied in lithographic printing equipment, printing, printing plates, etc., can solve the problems of ink repellency decline, etc., and achieve the effect of excellent adhesion and excellent damage resistance

Inactive Publication Date: 2017-11-28
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is also a problem that an excessive amount of crosslinking agent needs to be added in order to suppress the gelation caused by the incorporation of moisture into the coating solution, resulting in a decrease in ink repellency.

Method used

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  • Silicone composition for printing plates, lithographic printing plate master, lithographic printing plate and method of producing printed matter
  • Silicone composition for printing plates, lithographic printing plate master, lithographic printing plate and method of producing printed matter
  • Silicone composition for printing plates, lithographic printing plate master, lithographic printing plate and method of producing printed matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0246] On a degreased aluminum substrate (manufactured by Mitsubishi Almi Co., Ltd.) with a thickness of 0.24mm, apply the following dilution of the heat-insulating layer composition, and dry it at 200°C for 90 seconds, and set the film mass to 10g / m 2 insulation layer.

[0247]

[0248] Put the following component (a) into the container, while stirring with THREE-ONE MOTOR (スリーワンmotor), slowly add the components (b), (c), (d), and (e) in order, and stir and mix until the components become even. Components (f) and (g) were added to the obtained mixed liquid, and stirred and mixed for 10 minutes, thereby obtaining a heat insulating layer composition diluted liquid.

[0249] (a) Titanium oxide dispersion liquid: "タイペーク" (registered trademark) CR-50 (manufactured by Ishihara Sangyo Co., Ltd.) N,N-dimethylformamide dispersion liquid (titanium oxide 50% by mass): 60 parts by mass

[0250] (b) Epoxy resin: "JER" (registered trademark) 1010 (manufactured by Mitsubishi Chemical Co...

Embodiment 2

[0279] A lithographic printing plate precursor was prepared in the same manner as in Example 1, except that the diluted silicone composition for printing plates-1 was changed to the following diluted silicone composition for printing plates-2. , plate making, evaluation.

[0280]

[0281] (a) "アイソパー" (registered trademark) E: 894.05 parts by mass

[0282] (b) "DMS"-V35: 93.39 parts by mass

[0283] (c) "HMS"-301: 2.56 parts by mass

[0284] (d) Vinyltriacetoxysilane: 0.74 parts by mass

[0285] (e) Compound represented by general formula (II): ethyltriacetoxysilane: 3.26 parts by mass

[0286] (f) γ-picoline: 1.00 parts by mass

[0287] (g) XC94-C4326: 5.00 parts by mass

[0288] The ratio of the number of SiH groups to the number of vinyl groups (number of SiH groups / number of vinyl groups) of the silicone rubber layer was 1.5.

Embodiment 3

[0290] A lithographic printing plate precursor was prepared in the same manner as in Example 1 except that the diluted silicone composition for printing plates-1 was changed to the following diluted silicone composition for printing plates-3. , plate making, evaluation.

[0291]

[0292] (a) "アイソパー" (registered trademark) E: 894.05 parts by mass

[0293] (b) "DMS"-V35: 93.39 parts by mass

[0294] (c) "HMS"-301: 2.56 parts by mass

[0295] (d) Vinyltriacetoxysilane: 0.74 parts by mass

[0296] (e) Compound represented by general formula (II): phenyltriacetoxysilane: 3.26 parts by mass

[0297] (f) γ-picoline: 1.00 parts by mass

[0298] (g) XC94-C4326: 5.00 parts by mass

[0299] The ratio of the number of SiH groups to the number of vinyl groups (number of SiH groups / number of vinyl groups) of the silicone rubber layer was 1.5.

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Abstract

Provided is a silicone composition for printing plates, the composition including at least a SiH group-containing compound, a compound represented by the following general formula (I), a compound represented by the following general formula (II) and / or a compound represented by the following general formula (III), wherein D in the compound represented by general formula (I), G in the compound represented by general formula (II) and J in the compound represented by general formula (III) are acetoxy groups and / or dialkyloxyimino groups. A-Si-(D)3 (I) (In general formula (I), A represents a non-hydrolysable functional group that undergoes a hydrosilylation reaction with a SiH group.) E-Si-(G)3 (II) (In general formula (II), E represents a non-hydrolysable functional group that does not undergo a hydrosilylation reaction with a SiH group.) Si-(J)4 (III) Provided is a silicone composition for printing plates that is for producing lithographic printing plate masters or lithographic printing plates, that is a rapidly curing silicone rubber layer and also has excellent adhesion with an underlayer, and that has excellent ink-repelling properties and scratch resistance.

Description

technical field [0001] The present invention relates to a silicone composition for a printing plate, a lithographic printing plate precursor, a lithographic printing plate, and a method for producing a printed matter. Background technique [0002] Printing includes various methods such as letterpress printing, gravure printing, stencil (screen) printing, and lithography, and printing is performed by making full use of the characteristics of each method. [0003] Among them, lithographic printing is more advantageous than other printing methods in terms of obtaining high-definition printed matter and low total cost including running costs. [0004] Lithographic printing is a printing method in which an ink-accepting graphic portion and an ink-repellent non-graphical portion exist on approximately the same plane of the printing plate, and ink is adhered to only the graphic portion by utilizing the difference in ink adhesion. , and then transfer the ink to the printed medium s...

Claims

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Application Information

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IPC IPC(8): G03F7/11G03F7/00
CPCG03F7/00G03F7/11B41M1/08B41N1/003B41C2210/02B41C2210/04B41C2210/16C08G77/12C08G77/20C08L83/04B41C1/1016C08L83/00C08K5/5465C08K5/3432C08K5/56C08K5/5425C08K5/5419C08K5/5415G03F7/0755C09D11/101B41F1/38B41C2210/24
Inventor 饭原明宏久世康典村濑清一郎
Owner TORAY IND INC
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