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Method for preparing resin for UV photocuring ink

A light-curing ink and resin technology, used in inks, applications, household appliances, etc., can solve the problems of poor adhesion fastness and high viscosity, achieve moderate viscosity, improve adhesion fastness and temperature resistance.

Inactive Publication Date: 2010-04-28
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for preparing a resin for UV light-curable ink. The prepared resin for UV light-curable ink overcomes the high viscosity of the traditional UV ink resin and requires the addition of a more toxic multifunctional reactive diluent for dilution, and Disadvantages of poor adhesion after curing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a method for preparing a new type of resin for UV light-curable ink, which is specifically carried out in the following steps:

[0026] (1) Preparation of polyester polyol:

[0027] a. One-time esterification:

[0028] Add 10-20 parts by mass of azelaic acid and 15-25 parts by mass of 1,6 hexanediol into the polyester synthesis kettle, raise the temperature to 210-230°C, react for 2 to 3 hours, and distill out 2 to 4 masses of water Copies

[0029] b. Secondary esterification:

[0030] Add 5-15 parts by mass of triphthalic acid, 5-10 parts by mass of isophthalic acid, 5-15 parts by mass of sebacic acid, and 30-40 parts by mass to the polyester synthesis kettle that has completed the primary esterification reaction. Parts by mass of neopentyl glycol, heated to 210~230℃, reacted for 5~6 hours, during the reaction, pay attention to the water effluent of the polyester synthesis kettle, keep the water output stable at 2kg / hour, wait for the second esterifica...

Embodiment 2

[0041] This embodiment provides a method for preparing a resin for UV light-curable ink, which is specifically carried out in the following steps:

[0042] (1) Preparation of polyester polyol:

[0043] Take the raw materials according to the following ratio,

[0044] Raw material ratio% (weight percentage)

[0045] Azelaic acid 18

[0046] 1,6 hexanediol 15

[0047] Prophthalic acid 10

[0048] Isophthalic acid 8

[0049] Sebacic acid 10

[0050] Neopentyl glycol 39

[0051] According to the above formula, take the raw materials: 18Kg of azelaic acid, 15Kg of 1,6-hexanediol, 10Kg of phthalic acid, 8Kg of isophthalic acid, 10Kg of sebacic acid, and 39Kg of neopentyl glycol;

[0052] Preparation:

[0053] a. One-time esterification:

[0054] Add 18 parts by mass of azelaic acid and 15Kg of 1,6 hexanediol into the polyester synthesis kettle, raise the temperature to 210-230°C, react for 2 to 3 hours, and distill out 3.2kg of water;

[0055] b. Secondary esterification:

[0056] Add 10Kg of phthalic ...

Embodiment 3

[0079] This embodiment provides a method for preparing a resin for UV light-curable ink, which is specifically carried out in the following steps:

[0080] (1) The preparation of polyester polyol is the same as the raw material formula and preparation process of the preparation of polyester polyol in Example 2. For details, please refer to the preparation of polyester polyol in Example 2, which will not be repeated here;

[0081] (2) Preparation of epoxy modified polyurethane prepolymer:

[0082] Raw material ratio% (weight percentage)

[0083] E-type bisphenol A epoxy resin E20 12

[0084] The polyester polyol obtained in the above step (1) 58

[0085] Paraxylylene diisocyanate (XDI) 30

[0086] Specifically take: E-type bisphenol A epoxy resin E20 12Kg, polyester polyol 58Kg, p-xylylene diisocyanate (XDI) 30Kg;

[0087] Preparation:

[0088] After mixing 12Kg of E-type bisphenol A epoxy resin, 58Kg of polyester polyol, and 30Kg of p-xylylene diisocyanate (XDI), react at 65°C for 3 hours t...

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Abstract

The embodiment of the invention provides a method for preparing a resin for UV photocuring ink, comprising the following steps of preparing polyester polyol by adding phthalandione, isophthalicacid, sebacylicacid and dineopentyl alcohol into anchoic acid and 1,6-hexanediol after primary lipidation, performing secondary lipidation and polycondensation reaction to obtain the polycondensation product polyester polyol; mixing epoxy resin containing hydroxyl, isocyanate and the obtained polyester polyol for mixed reaction to prepare epoxy modified polyurethane prepolymers; mixing the obtained epoxy modified polyurethane prepolymers with acrylate monomer containing hydroxyl for reaction, adding UV initiator and inhibitor for reaction to prepare epoxy modified urethane acrylate with the molecular weight of 5000-10000 and viscosity of 4000-6000mpa.s, namely the resin for UV photocuring ink. The resin prepared by the method has good performance, and the adhesion and heat resistance of the ink products are improved. The step that the traditional photocuring resin needs to be added with polyfunctional reactive diluent with more toxicity is omitted, thus being more environment-friendly.

Description

Technical field [0001] The invention relates to a preparation technology of resin for ink, in particular to a preparation method of resin for UV curing ink. Background technique [0002] At present, the ink manufacturing industry and the printing industry often use a large amount of organic solvents, including the more toxic benzene solvents and ketone solvents. The use of this ink will cause environmental pollution and cause very serious harm to production workers. Therefore, in order to reduce the harm caused by the ink in the environmental pollution of the printing industry, the existing research and development ink should first ensure its environmental protection performance. The so-called environmentally friendly ink means that the VOC emission of the ink is low or zero. Specifically, it is the ink with water as the solvent or called water-based ink. There are also vegetable oil-based inks including soy ink and radiation curing ink. The radiation curing ink mainly It is UV...

Claims

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Application Information

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IPC IPC(8): C08G18/83C08G18/58C09D11/10C09D11/00C09D11/101
Inventor 赫长生沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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