A kind of structural resin for high-speed offset printing ink and its preparation method

An offset printing ink and structural technology, which is applied to the structural resin of high-speed offset printing ink and its preparation field, can solve the problems of complex preparation process, high softening point, low molecular weight, etc. quality effect

Active Publication Date: 2017-06-20
FENGKAI HAILAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bisphenol A rosin modified phenolic resin has high softening point, good viscosity and light color, but the molecular weight is relatively low, and the preparation process is complicated

Method used

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  • A kind of structural resin for high-speed offset printing ink and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0031] The steps of the preparation method of the structural resin used for high-speed offset printing ink in this embodiment are as follows:

[0032] The first step: put 100kg rosin into the reactor, feed N at 1500L / H 2 , raise the temperature to 200°C, add 20kg of fumaric acid, keep the temperature at 200°C for 30 minutes, then raise the temperature to 230°C, add 100kg of pentaerythritol, then raise the temperature to 275°C at a uniform speed, keep the temperature until the acid value of the material in the kettle is 23mg KOH / g , the softening point is 110°C, the reaction time used is 9h, the temperature is lowered to 230°C, and the rosin derivative is obtained by filtering with a 100-mesh filter, which is set aside;

[0033] The second step: put 100kg of octylphenol, 1000kg of paraformaldehyde and 0.3kg of triethylamine into the reaction kettle, then heat up to 95°C, and keep warm until the Gardner viscosity of 80% isopropanol in the kettle is T-U. The reaction time is 2.5...

Embodiment 2

[0036] The steps of the preparation method of the structural resin used for high-speed offset printing ink in this embodiment are as follows:

[0037] The first step: put 100kg rosin into the reactor, feed N at 1500L / H 2 , raise the temperature to 190°C, add 10kg of fumaric acid, keep the temperature at 190°C for 40 minutes, then raise the temperature to 220°C, add 80kg of pentaerythritol, then raise the temperature to 265°C at a uniform speed, keep the temperature until the acid value of the material in the kettle is 28mg KOH / g , the softening point is 100°C, the reaction time used is 10h, the temperature is lowered to 210°C, and the rosin derivative is obtained by filtering with a 100-mesh filter, which is set aside;

[0038] The second step: put 100kg octylphenol, 80kg paraformaldehyde and 0.2kg triethylamine into the reaction kettle, then raise the temperature to 90°C, and keep warm until the Gardner viscosity of 80% isopropanol in the kettle is T-U. The reaction time is ...

Embodiment 3

[0041] The steps of the preparation method of the structural resin used for high-speed offset printing ink in this embodiment are as follows:

[0042] The first step: put 100kg rosin into the reactor, feed N at 1500L / H 2 , raise the temperature to 210°C, add 30kg of fumaric acid, keep the temperature at 210°C for 20 minutes, then raise the temperature to 240°C, add 120kg of pentaerythritol, then raise the temperature to 285°C at a uniform speed, keep the temperature until the acid value of the material in the kettle is 22mg KOH / g , the softening point is 105°C, the reaction time used is 8h, the temperature is lowered to 230°C, and the rosin derivative is obtained by filtering with a 100-mesh filter, which is set aside;

[0043] The second step: put 100kg octylphenol, 110kg paraformaldehyde and 0.4kg into the reactor, then raise the temperature to 95°C, keep the heat until the Gardner viscosity of 80% isopropanol in the kettle is T-U, the reaction time used for 2 hours, lower ...

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Abstract

The invention discloses a structural resin for high-speed offset printing ink and a preparation method thereof. The structural resin for high-speed offset printing ink has a weight-average molecular weight of more than 300,000, a high softening point, a small acid value, and a high viscosity , Low viscosity, suitable for high-speed offset printing ink. The preparation of the structural resin is as follows: input rosin, add fumaric acid at 190-210°C, react at 190-210°C, add pentaerythritol at 220-240°C, and react at 265-285°C to obtain rosin derivatives; octylphenol , Paraformaldehyde and triethylamine are kept warm at 90-95°C to obtain phenolic resin; mix rosin and rosin derivatives and heat up to 240-255°C, add phenolic resin to react to obtain rosin phenolic condensate, keep the temperature at 240-255°C, Add glycerin and silicon dioxide, and keep warm at 260-270°C to react to obtain the structural resin. The method is simple, the conditions are easy to control, and it can be produced industrially.

Description

technical field [0001] The invention belongs to the technical field of ink, and in particular relates to a structural resin used for high-speed offset printing ink and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, the society's demand for printed matter is increasing. There are many types of inks with different performances. For offset printing inks, it is necessary to maintain colloidal properties under high-speed shearing conditions and have quick-drying characteristics. These key points require high-quality inks. link resin. Rosin modified phenolic resin is a high-grade ink binder component. The performance indicators that characterize the binder resin include softening point, viscosity, heptane value (solubility), molecular weight and distribution, and the latter is the most important performance indicator. Although it is not that the higher the molecular weight of the resin, the better the pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/34C08G81/00C09F1/04C09D11/103C09D11/08
Inventor 邓明泉郭超仁蒋标兵张陆春黎月清
Owner FENGKAI HAILAN CHEM CO LTD
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