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Preparation method of conjugated copolymerized colloidal oil, colloidal oil and ink

A copolymerized, colloidal oil technology, used in inks, household appliances, applications, etc., can solve the problems of not being damaged, the viscosity of the ink being reduced, reducing the amount of ink, improving the excessive emulsification of the ink, and achieving good fat solubility. Effect

Active Publication Date: 2016-08-17
BAUHINIA VARIEGATA INK & CHEM (ZHONGSHAN) LTD
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Problems solved by technology

However, the essence of the gelling agent is that aluminum isooctanoate forms hydrogen bonds with the hydroxyl hydrogen in the resin to form a polymer compound to increase the viscosity of the binder, but the hydrogen bond energy is usually <42kJ / mol, and the bond energy is small. Compared with C-C Covalent bond, its bond energy is 398kJ / mol, and the hydrogen bond energy is only equivalent to one tenth of the covalent bond. Under high-speed shearing, the hydrogen bond is destroyed, resulting in a decrease in ink viscosity, excessive emulsification, flying Ink and other printing failures, but the covalent bonds will not be destroyed under high-speed shearing. How to replace the hydrogen bonds in the colloidal oil with covalent bonds to form high-viscosity and stable inks under high-speed shearing becomes high-speed offset printing The key to machine ink research and development

Method used

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  • Preparation method of conjugated copolymerized colloidal oil, colloidal oil and ink

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preparation example Construction

[0018] The invention provides a preparation method of conjugated colloidal colloidal oil, comprising the steps of:

[0019] 1) The following raw materials in parts by weight: 10-25 parts of rosin modified phenolic resin A, 10-25 parts of rosin modified phenolic resin B, 10-30 parts of dry vegetable oil, 10-30 parts of semi-dry vegetable oil, Stir and mix, and heat up to 180-200°C to melt the resin, and then keep it warm for 1-1.5h to carry out the conjugate copolymerization reaction.

[0020] Wherein the rosin modified phenolic resin has good fat solubility, high viscosity, fast drying and good water resistance, and is particularly suitable for printing ink; further, adopts octylphenol rosin modified phenolic resin and mixed phenol modified rosin in the present invention Modified phenolic resin, octylphenol rosin modified phenolic resin has high molecular weight and high viscosity; mixed phenol modified rosin modified phenolic resin has high molecular weight, high viscosity, h...

Embodiment 1

[0030] Take 10kg of octylphenol rosin modified phenolic resin (Mw=200000~220000, M w / M n =30~50), mixed phenol modified rosin modified phenolic resin 15kg (Mw=200000~230000, Mw=200000~230000, M w / M n =30~50), linseed oil 15g, soybean oil 10kg, stir and mix, and heat up to 180°C to melt the resin, and then keep it warm for 1h to carry out the conjugate copolymerization reaction. After the heat preservation is over, lower the temperature to 100°C, add 1kg of aluminum isooctanoate and 2kg of BHT, stir and mix evenly, then raise the temperature to 160-165°C, and keep the temperature for 1 hour to obtain a conjugated copolymerized gum oil sample.

Embodiment 2

[0032] Take 15kg of octylphenol rosin modified phenolic resin (Mw=200000~250000, M w / M n =30~100), mixed phenol modified rosin modified phenolic resin 25kg (Mw=200000~220000, Mw=200000~220000, M w / M n =30~100), linseed oil 10kg, soybean oil 15kg, stir and mix, and heat up to 200°C to melt the resin, and then keep it warm for 1.5h to carry out the conjugate copolymerization reaction. After the heat preservation is over, lower the temperature to 120°C, add 0.5kg of aluminum isooctanoate and 1kg of BHT, stir and mix evenly, then raise the temperature to 160-165°C, and keep the temperature for 1.5h to obtain a conjugated copolymerized gum oil sample.

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Abstract

The invention discloses a preparation method of colloidal oil. The colloidal oil is prepared by conjugated copolymerization reaction of rosin modified phenolic resin, semi-dry vegetable oil, dry vegetable oil, aluminum isooctanoate and auxiliary agents. The invention also provides a conjugated colloidal colloidal oil and ink with the colloidal oil. The viscosity of the conjugated copolymerized colloidal oil system of the present invention is greatly increased due to the conjugated copolymerized reaction, which can improve the high-speed shear stability of the ink, and improve the problems of excessive emulsification and ink flying caused by poor shear resistance; At the same time, it can reduce the amount of gelling agent such as aluminum isooctanoate and resin when producing colloidal oil, saving costs. The invention can be used for high-speed offset printing ink.

Description

technical field [0001] The invention relates to a conjugated copolymerized colloidal oil, in particular to a method for preparing a conjugated copolymerized colloidal oil used in inks of high-speed offset printing machines, the colloidal oil and ink. Background technique [0002] With the rapid development of printing technology, high-speed and green printing have gradually become the direction and trend of printing. The world's major offset printing machine manufacturers have launched their own high-speed offset printing machines. The maximum speed of the printing press is constantly being refreshed, from 15,000 sheets / hour to 18,000 sheets / hour, and the fastest has reached 20,000 sheets / hour. The requirements for printing ink are also higher, from the achievement of water-ink balance to the transfer stability under high-speed shearing, from the reproduction requirements of ink dots to the reasonable control of ink viscosity, how to develop and adapt to high-speed machines ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/103C09D11/06
Inventor 冯顺权
Owner BAUHINIA VARIEGATA INK & CHEM (ZHONGSHAN) LTD
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