Structural resin for high-speed offset ink and preparation method thereof

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

Active Publication Date: 2016-02-17
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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  • Structural resin for high-speed offset ink and preparation method thereof

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Comparison scheme
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 , heat up 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 23mgKOH / 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 octylphenol, 1000kg paraformaldehyde and 0.3kg triethylamine into the reaction kettle, then raise the temperature to 95°C, keep warm and react until the Gardner viscosity of 80% isopropanol in the kettle is T-U. The reaction time is 2.5h, an...

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 , heat up 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 28mgKOH / 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, keep warm and react until the Gardner viscosity of 80% isopropanol in the kettle is T-U. The reaction time is 3h, and th...

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 , heat up 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 22mgKOH / 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] Step 2: Put 100kg of octylphenol, 110kg of 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 the temperature to ...

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Abstract

The invention discloses structural resin for high-speed offset ink and a preparation method thereof. The weight-average molecular weight of the structural resin for the high-speed offset ink is as high as 300 thousand or above, and the structural resin is high in softening point, low in acid value, high in viscosity, low in stickiness and suitable for the high-speed offset ink. The structural resin is prepared in the following steps that rosin is put in, fumaric acid is added at the temperature between 190 DEG C and 210 DEG C, and a reaction is performed at the same temperature; pentaerythritol is added at the temperature between 220 DEG C and 240 DEG C, and a reaction is performed at the temperature between 265 DEG C and 285 DEG C to obtain a rosin derivative; octylphenol, paraformaldehyde and triethylamine are subjected to a thermal reaction at the temperature between 90 DEG C and 95 DEG C to obtain phenolic resin, the temperature is kept between 240 DEG C and 255 DEG C, glycerinum and silicon dioxide are added, and a thermal reaction is performed at the temperature between 260 DEG C and 270 DEG C to obtain the structural resin. The method is simple, conditions are easy to control, and industrial production can be achieved.

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 Applications(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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