Production method of abietic maleic anhydride resin

A technology of rosin maleic anhydride and maleic anhydride, which is applied in the production field of rosin maleic anhydride resin, can solve the problem of inability to effectively control the molecular weight range, failure to meet customer needs, and failure to maintain high acid value, etc. problems, to achieve the effects of environmental protection and safety, control of molecular weight range, and good water solubility

Inactive Publication Date: 2011-04-13
上海华谊精细化工有限公司上海南大化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current foreign production methods, the product resin cannot effectively control its molecular weight range while maintaining a high acid value, and the softening point is high, that is, the molecular weight is large, and the product has poor water solubility.
In the domestic production method, while the softening point range of the product resin is controlled, it cannot maintain a high acid value and has poor water solubility, which cannot meet customer needs

Method used

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  • Production method of abietic maleic anhydride resin
  • Production method of abietic maleic anhydride resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Inhale 3,500 kg of molten rosin in a six-ton ​​reactor, add 540 kg of maleic anhydride at 144°C, heat up, and perform addition reaction at a temperature of 200-210°C for 1 hour. After the addition reaction is finished, add 240 kg of pentaerythritol and 3 kg of zinc oxide, and stir at 220-225° C. to fully dissolve the solid material. Then heat up, and the adduct and pentaerythritol undergo esterification reaction at 255-260° C. for 5.5 hours. Sampling in the control laboratory, acid value 161.3mg KOH / g, softening point 148 ℃ (see Table 1), the product meets the enterprise quality standards. Cool down to 255°C, pass through the 60-100 mesh filter installed in the discharge tray, filter to remove impurities, put the filter into the reaction tray and cool it into a transparent solid, the color is No. 9, and the product maleic anhydride resin is obtained , the total yield was 95.1%.

Embodiment 2

[0025] Inhale 3,500 kg of molten rosin in a six-ton ​​reactor, add 880 kg of maleic anhydride at 147°C, heat up, and perform addition reaction at a temperature of 205-212°C for 1.5 hours. After the addition reaction is finished, add 360 kg of pentaerythritol and 4.5 kg of zinc oxide, and stir at 220-228°C to fully dissolve the solid material. Then heat up, and the adduct and pentaerythritol undergo esterification reaction at 252-262° C. for 6 hours. Sampling for central control testing showed acid value 175.3mg KOH / g, softening point 135°C, continued esterification reaction at 252-262°C for 1 hour, and again central control test showed acid value 157mg KOH / g, softening point 152°C, the product In line with corporate quality standards. Cool down to 255°C, pass through the 60-100 mesh filter installed in the discharge tray, filter to remove impurities, put the filter into the reaction tray and cool it into a transparent solid, the color is No. 9, and the product maleic anhydrid...

Embodiment 3

[0027] Inhale 3,500 kg of molten rosin in a six-ton ​​reactor, add 990 kg of maleic anhydride at 148°C, heat up, and perform addition reaction at a temperature of 210-218°C for 2 hours. After the addition reaction is over, add 480 kg of pentaerythritol and 5.5 kg of zinc oxide, and stir at 222-230° C. to fully dissolve the solid material. Then heat up, and the adduct and pentaerythritol undergo esterification reaction at 255-265° C. for 6.5 hours. Sampling in the control laboratory, the acid value is 167mg KOH / g, the softening point is 154°C, and the product meets the enterprise quality standards. Cool down to 255°C, pass through the 60-100 mesh filter installed in the discharge tray, filter to remove impurities, put the filter into the reaction tray and cool it into a transparent solid, the color is No. 9, and the product maleic anhydride resin is obtained , the total yield was 96.1%.

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Abstract

The invention relates to a production method of abietic maleic anhydride resin, comprising the following two reaction steps of: 1, carrying out addition reaction on abietyl and maleic anhydride to generate an abietic maleic anhydride addition product; and 2, carrying out esterification reaction on the abietic maleic anhydride addition product and pentaerythritol to generate the abietic maleic anhydride resin. The production method is easy and convenient to operate, has the advantages of large temperature control range, high operability, small investment and stable product quality and is a method suitable for industrialized production; in the production method, appropriate process conditions including raw material proportion, reaction temperature, reaction time, catalysts, and the like, are adopted, thereby the acid value and the molecular weight range of a resin product can be effectively controlled; in addition, the resin product obtained with the production method has higher acid value of 150-170 mg KOH/g, reasonable softening point at 140-155 DEG C and good water solubility and is suitable for producing water-based ink, and a formed coating film has toughness and better after-tackiness resistance, water resistance and alkali resistance.

Description

technical field [0001] The present invention relates to a kind of production method of rosin maleic anhydride resin Background technique [0002] Rosin maleic anhydride resin is mainly used in paint, paper glazing, ink and other industries. The prepared paint film ink has the characteristics of fast drying, excellent hardness and gloss, and good water resistance. Today, as the concept of environmental protection continues to gain popularity, a wave of green is setting off around the world. While upgrading products in various industries, they pay more attention to the development of environmental protection technologies. For example, the ink industry has also developed from oil-soluble inks to water-soluble inks. In order to produce water-based ink, there is an urgent need for a water-soluble rosin resin as a raw material, and water-soluble rosin maleic anhydride resin is usually used as a raw material for producing water-based ink. This water-soluble rosin maleic anhydride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/553C09F1/04C09D11/10C09D11/02
Inventor 马翠萍严爱芳章瑞钢李永生
Owner 上海华谊精细化工有限公司上海南大化工厂
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