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Method for preparing maleic rosin hydroxyethyl methacrylate polymer from rosin

A technology of hydroxyethyl methacrylate and polymer of rosin is applied in the field of preparing malerosin hydroxyethyl methacrylate polymer from rosin, which can solve the problem of not conforming to the industrialized large-scale production application, affecting the stability of the polymer, the reaction of Low activity, etc., to achieve the effects of environmentally friendly, easy-to-get and renewable raw materials, conducive to subsequent processing, and high reactivity

Inactive Publication Date: 2020-02-04
广东省邦得利新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Available from the above published patents, there are many methods for preparing rosin polymers using rosin in the prior art, but they all use the double bond structure of rosin itself to carry out polymerization reactions, and due to the conjugated double bond structure of rosin itself Can not react completely, affect the stability of polymer, and the side reaction that polymerization produces is more, can influence follow-up processing, utilize the double bond on the modified rosin ring to carry out polymerization reaction at the same time, its reactivity is low, and productive rate is relatively low. Low, does not meet the needs of industrial mass production applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The method that present embodiment provides prepares maleic rosin hydroxyethyl methacrylate polymer from rosin, it comprises the following steps:

[0027] 1) Add rosin to the reaction kettle, raise the temperature to 180°C until the rosin is completely melted, turn on the motor, add maleic anhydride and catalyst while stirring, raise the temperature of the maleic acid and rosin to 225°C, react for 9 hours, then Lower the temperature to 75°C to obtain maleic rosin; in this example, the molar ratio of maleic acid to rosin is 1:1, and the catalyst used is AlCl 3 , its addition is 2.0% of rosin weight;

[0028] 2) Add butyl acetate and the maleic rosin prepared in step 1) to the reaction kettle, heat up to 80°C under the state of sealing, reflux condensation and stirring, and add hydroxyethyl methacrylate, catalyst and polymerization inhibitor , heated up to 110°C, reacted for 6h, and separated the water through an oil-water separator to obtain the butyl acetate solution o...

Embodiment 2

[0031] The method that present embodiment provides prepares maleic rosin hydroxyethyl methacrylate polymer from rosin, it comprises the following steps:

[0032] 1) Add rosin to the reaction kettle, raise the temperature to 175°C until the rosin is completely melted, turn on the motor, add maleic anhydride and catalyst while stirring, raise the temperature of the maleic acid and rosin to 200°C, react for 7 hours, then Lower the temperature to 80°C to obtain maleic rosin; in this example, the molar ratio of maleic acid to rosin is 1:1, and the catalyst used is TiCl 3 , its addition amount is 0.1% of rosin weight;

[0033]2) Add butyl acetate and maleic rosin prepared in step 1) to the reaction kettle, heat up to 70°C under sealing, reflux condensation and stirring state, add hydroxyethyl methacrylate, catalyst and polymerization inhibitor , heated up to 105°C, reacted for 4h, separated the water through an oil-water separator to obtain the butyl acetate solution of maleic rosi...

Embodiment 3

[0036] The method that present embodiment provides prepares maleic rosin hydroxyethyl methacrylate polymer from rosin, it comprises the following steps:

[0037] 1) Add rosin to the reaction kettle, raise the temperature to 178°C until the rosin is completely melted, turn on the motor, add maleic anhydride and catalyst while stirring, raise the temperature of the maleic acid and rosin to 220°C, react for 8 hours, then Lower the temperature to 78°C to obtain maleic rosin; in this example, the molar ratio of maleic acid to rosin is 1:1, and the catalyst used is ZnCl 2 and BF 3 ·Et 2 O, its addition is 1.5% of rosin weight;

[0038] 2) Add butyl acetate and the maleic rosin prepared in step 1) to the reaction kettle, heat up to 75°C under sealing, reflux condensation and stirring, and add hydroxyethyl methacrylate, catalyst and polymerization inhibitor , heated up to 107°C, reacted for 4.5h, and separated the water through an oil-water separator to obtain the butyl acetate sol...

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Abstract

The invention relates to a method for preparing a maleic rosin hydroxyethyl methacrylate polymer from rosin. The method comprises the following operation steps: 1) adding rosin into a reaction kettle,performing heating to complete melting of rosin, adding maleic acid and a catalyst, and carrying out a thermal reaction to generate maleic rosin; 2) carrying out a reaction of maleic rosin with hydroxyethyl methacrylate in butyl acetate to prepare maleic rosin hydroxyethyl methacrylate; and 3) carrying out a polymerization reaction of the maleic rosin hydroxyethyl methacrylate to prepare the maleic rosin hydroxyethyl methacrylate polymer. The method provided by the invention can eliminate a conjugate double bond to form a relatively stable six-membered ring internal double bond structure by using a D-A reaction under the premise of not destroying a structure of rosin, at the same time the occurrence of side reactions is effectively reduced, the subsequent processing is facilitated, a double bond structure of hydroxyethyl methacrylate is used for polymerization, the reactivity is high, the yield is effectively improved, and the needs of industrial large-scale production applications are met.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing maleic rosin hydroxyethyl methacrylate polymer from rosin. Background technique [0002] Rosin is a rich and cheap renewable resource. China's gum rosin production ranks first in the world. How to use rosin as a renewable natural resource to replace petroleum and other disposable resources has become an increasingly important research topic. Due to the characteristics of easy oxidation, high acid value and poor thermal stability of rosin, its direct application is limited to some extent. It has become a research hotspot at home and abroad to modify it by using the two active centers of carboxyl group and double bond contained in rosin. . The common one is to use rosin to prepare rosin polymers, which are mainly used in the preparation of high-grade printing inks, coatings and adhesives. [0003] The method that utilizes rosin to prepare polymer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/28C09F1/04
CPCC08F120/28C09F1/04
Inventor 朱冰舒航张佳阳王平赵扬余记乐
Owner 广东省邦得利新材料技术有限公司
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