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A kind of photoinitiator, its crystal preparation method and ink composition

A technology of ink composition and photoinitiator, which is applied in the fields of coatings, adhesives and inks, can solve the problems of increasing the permeability of imprinting, unfavorable printing, deterioration of ink gloss and gloss stability, etc.

Active Publication Date: 2021-05-18
HUIZHOU HUAHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluidity of the ink is too small, the ink is not easy to transfer, which is not conducive to printing, and the gloss and gloss stability of the ink will deteriorate
Therefore, in order to obtain a better gloss, the fluidity of the ink should be controlled. To increase the viscosity or reduce the fluidity, other printing conditions must be considered. Otherwise, simply emphasizing the imprinted gloss will cause other quality problems.
[0007] 3) The fineness of the ink, the ink particles are rough, and faults such as stacking are prone to occur during printing. The printed product is also rough, with diffuse reflection and poor gloss. Rough ink particles are easy to absorb dust during subsequent use, which will also cause gloss The stability of the worsening
[0011] 7) The thickness of the ink layer. The total thickness of the ink layer of each color on the surface of the printed sheet has a great relationship with the gloss. Generally, monochrome printed matter rarely appears glossy. If it is overprinted on it, it will appear glossy, so the thickness of the ink layer of each color is correct Gloss is affected, but overprinting is likely to cause uneven thickness of each ink layer. In subsequent use, due to the different shrinkage rates between ink layers, it will affect the stability of gloss.
Another example is the addition of No. 6 thin varnish, which not only increases the fluidity, but also increases the permeability of the print on the paper, and also reduces the dryness, which is not good for the gloss of the print.

Method used

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  • A kind of photoinitiator, its crystal preparation method and ink composition
  • A kind of photoinitiator, its crystal preparation method and ink composition
  • A kind of photoinitiator, its crystal preparation method and ink composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 3-Methyl-4'-phenylbenzophenone was prepared by the following crystallization method,

[0061] 1) Add 1.5 parts by weight of ethanol to 1 part by weight of 3-methyl-4-phenylbenzophenone powder, heat up to 65°C to dissolve, and filter to remove insoluble matter;

[0062] 2) Cool down to 50°C at a rate of 8°C per hour and keep warm for 1 hour;

[0063] 3), then cool down to 10 degrees Celsius at a rate of 5 degrees Celsius per hour;

[0064] 4), filter to obtain the white needle crystals of 3-methyl-4'-phenylbenzophenone.

[0065] The angle of repose of the prepared 3-methyl-4'-phenylbenzophenone tested according to the method of standard GB11986-1989 is 52.9 °.

Embodiment 2

[0067] 3-Methyl-4'-phenylbenzophenone was prepared by the following crystallization method,

[0068] 1), put m-toluyl chloride and biphenyl in a molar ratio of 1:1 into a reaction vessel, add dichloroethane as a solvent, and aluminum trichloride as a catalyst, and the quality of dichloroethane used is m- 3-5 times that of toluoyl chloride, the quality of aluminum trichloride used is 0.3-0.5% of m-toluoyl chloride, and under the condition of reaction temperature 45-50°C, the reaction time is 4 hours to generate 3-methanol Base-4'-phenylbenzophenone powder;

[0069] Add 2 parts by weight of ethanol to the above 3-methyl-4-phenylbenzophenone powder, heat up to 65°C to dissolve, and filter to remove insoluble matter;

[0070] 2) Cool down to 40°C at a rate of 3°C per hour and keep warm for 3 hours;

[0071] 3), then cool down to 10 degrees Celsius at a rate of 5 degrees Celsius per hour;

[0072] 4), filter to obtain the white needle crystals of 3-methyl-4'-phenylbenzophenone. ...

Embodiment 3

[0075] 3-Methyl-4'-phenylbenzophenone was prepared by the following crystallization method,

[0076] 1) Add 1.8 parts by weight of ethanol to 1 part by weight of 3-methyl-4-phenylbenzophenone powder, heat up to 65°C to dissolve, and filter to remove insoluble matter;

[0077] 2) Cool down to 45°C at a rate of 5°C per hour and keep warm for 1.5 hours;

[0078] 3), then cool down to 10 degrees Celsius at a rate of 5 degrees Celsius per hour;

[0079] 4), filter to obtain the white needle crystals of 3-methyl-4'-phenylbenzophenone.

[0080] The angle of repose of the prepared 3-methyl-4'-phenylbenzophenone tested according to the method of standard GB11986-1989 is 55.1 °.

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Abstract

The invention discloses a photoinitiator, its crystallization preparation method and ink composition. The photoinitiator of the invention is 3-methyl-4'-phenylbenzophenone with an angle of repose range of 52.9°-63.8° , the present invention also provides an ink composition that is 52.9°-63.8° in the range of angle of repose 3-methyl-4'-phenylbenzophenone, resin, acrylate monomer, reactive amine to help initiate prepared. The ink composition has the following beneficial effects: the photocuring agent has good solubility in organic monomers, is applicable to various formulation systems, and is beneficial to processing and production. The ink composition prepared by the specific curing agent of the present invention has good glossiness, good anti-yellowing property, excellent weather resistance and high glossiness durability. The ink composition provided by the invention solves the long-standing urgent demand in the industry for an ink with good gloss that can withstand outdoor environments.

Description

technical field [0001] The invention relates to the technical fields of ink, paint, adhesive and the like, and in particular to a photoinitiator, a preparation method and a composition thereof. Background technique [0002] UV-curable ink refers to the ink that uses ultraviolet light of different wavelengths and energies to form a film and dry the ink under ultraviolet radiation. [0003] Photocuring technology is a process in which light (ultraviolet or visible light) or electron beams are used as energy sources to trigger rapid transformation of liquid substances with chemical reaction polarity into solid states. With the continuous development of science and technology and the increasing emphasis on environmental protection, light curing technology has developed rapidly. At present, this technology has been widely used in printing plate making, stereolithography, inks, coatings, adhesives, as well as dental, orthopedic repair materials, invisible Spectacles and other bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C49/784C07C45/81C09D11/101C08F2/48
CPCC07B2200/13C07C49/784C08F2/48C09D11/101
Inventor 林剑雄刘强魏学敏郑学飞
Owner HUIZHOU HUAHONG NEW MATERIAL