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Emulsion binder, aqueous pigment ink for inkjet containing same, and method for producing emulsion binder

A manufacturing method and linking material technology, applied in the direction of copying/marking method, ink, application, etc., can solve the problem of poor ink redispersibility, etc., and achieve the effect of excellent ejection stability and low viscosity

Active Publication Date: 2015-06-17
DAINICHISEIKA COLOR & CHEM MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the polymer contained in these emulsions dries to form a film, it is difficult to dissolve in an aqueous medium, so the redispersibility of the ink tends to be poor.

Method used

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  • Emulsion binder, aqueous pigment ink for inkjet containing same, and method for producing emulsion binder
  • Emulsion binder, aqueous pigment ink for inkjet containing same, and method for producing emulsion binder
  • Emulsion binder, aqueous pigment ink for inkjet containing same, and method for producing emulsion binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] (Example 1: Preparation of emulsion vehicle (1))

[0100] 131.7 parts of diethylene glycol dimethyl ether (hereinafter referred to as "DMDG"), 1.0 parts of iodine, and 4.9 parts of 2,2' -Azobis(4-methoxy-2,4-dimethylvaleronitrile) (hereinafter referred to as "V-70"), 44 parts of benzyl methacrylate (hereinafter referred to as "BzMA"), 13 parts 2-Hydroxyethyl methacrylate (hereinafter referred to as "HEMA") and 0.11 parts of N-iodosuccinimide. The mixture was stirred and heated to 40°C to perform polymerization. After 3 hours, the iodine brown color disappeared. From this point of view, it was confirmed that iodine reacted with V-70, and an iodine compound (polymerization initiating compound) was generated in the reaction system. The temperature was kept constant and polymerization was further performed for 4 hours, followed by natural cooling to obtain a solution of the A polymer block.

[0101] When a part of the solution was sampled and the solid content concentra...

Embodiment 2

[0105] (Example 2: Preparation of emulsion vehicle (2))

[0106]In addition to using 362.3 parts of DMDG, 1.0 parts of iodine, 4.9 parts of V-70, 105 parts of MMA, 148.5 parts of 2-ethylhexyl methacrylate (hereinafter referred to as "2EHMA"), 45.5 parts of HEMA and 0.17 parts of diphenyl Except for methane, a solution of the A polymer block was obtained in the same manner as in Example 1 above. The polymerization rate was 80.5%. The Mn of the obtained A polymer block is 22000, the PDI is 1.56, the polymer composition is MMA / 2EHMA / HEMA≈35 / 50 / 15, the Tg calculated by theoretical calculation is 31.5°C, and the acid value is 0mgKOH / g. In addition, when a part of the sampled solution was added to water, a soft polymer was deposited. From this, it was confirmed that the obtained A polymer block was a substantially water-insoluble polymer.

[0107] Except adding a mixture of 40 parts of MMA, 17.2 parts of MAA and 0.6 parts of V-70 to the solution of the obtained A polymer block, t...

Embodiment 3

[0109] (Example 3: Preparation of emulsion vehicle (3))

[0110] In addition to using 197.1 parts of DMDG, 0.4 parts of iodine, 2.4 parts of V-70, 54 parts of MMA, 49 parts of butyl methacrylate (hereinafter referred to as "BMA"), 50 parts of dodecyl methacrylate (hereinafter referred to as "LMA"), 3 parts of MAA, and 0.1 part of di-tert-butylhydroxytoluene (hereinafter referred to as "BHT") were polymerized for 6 hours, and a solution of polymer block A was obtained in the same manner as in Example 1 above. . The polymerization rate was about 100%. The Mn of the obtained A polymer block is 30000, the PDI is 1.61, the polymer composition is MMA / BMA / LMA / MAA≈35 / 31 / 32 / 2, the Tg calculated by theoretical calculation is 7.7°C, and the acid value is 12.6mgKOH / g.

[0111] In addition, when a part of the sampled solution was added to water, a soft polymer was deposited. Since the A polymer block has a carboxyl group, it may be dissolved in alkaline water. Therefore, 0.2 g of the...

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Abstract

The present invention is an emulsion connecting material containing A-B block copolymer. The number average molecular weight of the A-B block copolymer is 5,000 to 100,000, and the molecular weight distribution (weight average molecular weight / number average molecular weight) is 1.7 or less, the acid value of the A polymer block is 0 to 30 mgKOH / g, and the glass transition temperature is below 60°C, the acid value of the B polymer block is 75 to 250 mgKOH / g, and the A-B block copolymer is neutralized by alkaline substances and self-emulsified in the aqueous medium, thus forming an average particle size of 30 to 300 nm. Lotion particles.

Description

technical field [0001] The present invention relates to an emulsion binder (emulsion binder) which is a film component suitable for inkjet printing, an inkjet water-based pigment ink containing the emulsion binder, and a method for producing the emulsion binder. Background technique [0002] With the recent increase in functionality, inkjet printers (printing machines) have been used in various ways. For example, the use of inkjet printers not only for personal use, business use, business use, recording use, color display use, and color photograph use but also industrial use has been further expanded. Among them, an inkjet printer for industrial use is particularly required to be able to cope with high-speed printing. In such water-based pigment inks used in inkjet printers, in order to improve brilliance, vividness of colors, color density, etc., miniaturization of pigment particles is progressing. On the other hand, miniaturization of ejected liquid droplets (ink droplet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/107C09D11/30B41J2/01B41M5/00C08F4/00C08F6/02C08F265/06C09D11/00C09D11/322
CPCC09D11/107C09D11/322C08F293/005Y10T428/2982C08F299/0414
Inventor 岛中博之村上贺一青柳真一郎后藤淳梶弘典
Owner DAINICHISEIKA COLOR & CHEM MFG CO LTD