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Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge

一种光聚合性、组合物的技术，应用在油墨、涂层、印刷等方向，能够解决困难等问题，达到外观改善的效果

Active Publication Date: 2015-06-10
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the coating system, it is difficult to provide a coating film that has no problem of skin sensitization and has high strength and excellent appearance

Method used

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  • Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge
  • Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge
  • Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] The ink of Example 1 having a viscosity of 8 mPa·s at 25° C. was obtained by mixing the following materials (a) to (d) with the mixing ratio presented in Table 3-1.

[0129] a: (meth)acrylate

[0130] a1: Diethylene glycol dimethacrylate 95

[0131] (2G(1.1), manufactured by Shin-Nakamura Chemical Co., Ltd.)

[0132] a2: Dipentaerythritol hexaacrylate 5

[0133] (TMPT-3EO(3.1), manufactured by Shin-Nakamura Chemical Co., Ltd.)

[0134] a3: Ethylene oxide modified trimethylolpropane trimethacrylate 0

[0135] b: polymerization initiator

[0136] b1: 1-hydroxycyclohexyl phenyl ketone 20

[0137] c: polyether modified polysiloxane compound

[0138] c1: (CH 3 )Si-O-[Si(CH 3 ) 2 -O] a -[Si(CH 3 )(X)-O] b -Si(CH 3 ) 3 0.1

[0139] d: (meth)acrylate other than (a) 0

[0140] (a) (Meth)acrylates negative for skin sensitization

[0141] (b) Photoradical polymerization initiator

[0142] (c) Polyether-modified polysiloxane ...

Embodiment 2 to 8， comparative Embodiment 1 to 2

[0194] Each of the inks of Examples 2 to 8 and the inks of Comparative Examples 1 to 2 was similarly obtained by mixing the materials of (a) to (d) at the mixing ratios presented in Table 3-1.

[0195] Each of the obtained inks was subjected to measurement of viscosity (mPa·s) at 25°C, 45°C and 60°C, and its leveling degree indicating the smoothness of the coating film was evaluated in the same manner as in Example 1. The results are presented in Table 3-1.

Embodiment 9 to 16

[0196] [Examples 9 to 16, Comparative Examples 3 to 4]

[0197] Each of the inks of Examples 9 to 16 and the inks of Comparative Examples 3 to 4 was similarly prepared by mixing the materials of (a) to (d) at the mixing ratios presented in Table 3-2 (numerical unit: parts by mass ) to obtain by mixing.

[0198] Each of the obtained inks was subjected to measurement of viscosity (mPa·s) at 25°C, 45°C and 60°C, and its leveling degree indicating the smoothness of the coating film was evaluated in the same manner as in Example 1. The results are presented in Table 3-2.

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Abstract

To provide a non-aqueous photopolymerizable composition, which contains: a polymerizable monomer; a polymerization initiator; and a polyether-modified polysiloxane compound represented by the following general formula (1): <General Formula (1)> (CH3)3Si-O-[Si(CH3)2-O]a-[Si(CH3)(X)-O]b-Si(CH3)3 where X represents R(C2H4O)c(C3H6O)d-R', R is a single bond or an alkylene group, R' is a hydrogen atom or an alkyl group, and a to d each denote an average polymerization degree including a case where either c or d is 0.

Description

technical field [0001] The present invention relates to a photopolymerizable composition, a photopolymerizable inkjet ink, and an ink cartridge containing the ink. Background technique [0002] Photopolymerizable compositions and photopolymerizable inkjet inks using (meth)acrylates have been widely known (see PTL 1). [0003] However, many monomers used in conventional photopolymerizable inkjet inks are toxic. In particular, most (meth)acrylates that are readily available at low cost are highly toxic in terms of skin sensitization, which leads to allergic reactions of the skin after contact with them. Conventional techniques have not provided any solution to this problem. [0004] Based on the studies conducted so far, the present inventors have found some (meth)acrylates and (meth)acrylamides which do not have the problem of skin sensitization. For one of its examples, an inkjet ink containing methacrylate as a main component has been proposed because methacrylate is les...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44B41J2/01B41M5/00
CPCC08F2/44C08F2/48C09D11/101C09D11/322C09D133/14C08G77/46C08F222/102C08L83/04C08F222/103C08F222/106C08F222/1006C08L83/12C08K5/5419C09D11/107C09D11/38
Inventor 平冈孝朗
Owner RICOH KK
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