Preparation method for modified aluminium oxide rosin
A technology of alumina and rosin, which is applied in the field of deep processing of rosin, can solve the problems of no major progress in product types, preparation methods, slow reaction, and no discovery, and achieves the effects of high softening point, fast and moderate reaction speed, and good quality.
Inactive Publication Date: 2015-06-24
张健
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Problems solved by technology
In recent decades, in terms of deep processing of rosin, there has been no major progress in its product types and preparation methods; the preparation methods of existing technology products have shortcomings such as slow reaction and long time consumption.
[0003] Through the search of China's public patents, 527 related invention patents were found, but no solution identical to this patent application was found
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[0009] The preparation method of the modified alumina rosin of the present invention can make the reaction stable, moderate and easy to control through the optimization of material ratio, appropriate catalyst and reaction time control, so as to obtain a light-colored and high-quality product with luster It is shallow and has high softening point. It is used in paints, inks, synthetic resins, adhesives, electronics, chemicals and other industrial sectors. It can be reacted with phenolic and alcohols to produce light-colored phenolic resins and various rosin resins.
[0010] The preparation method of modified alumina rosin of the present invention is characterized in that: material ratio is, rosin: acrylic acid: maleic anhydride: the molar ratio of aluminum oxide is 1:0.3:0.3:0.5; Its technology comprises the following steps, will The rosin is heated and melted under an inert gas, the temperature is raised to 180-200°C, maleic anhydride and alumina are added, and the temperature ...
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Abstract
The invention discloses a preparation method for modified aluminium oxide rosin. The method is characterized in that the ratio among materials is that the molar ratio of rosin to acrylic acid to maleic anhydride to aluminium oxide is 1:0.3:0.3:0.5. The technology of the preparation method comprises the following steps: heating and melting rosin under inert gas, heating to the temperature of 180-200 DEG C, adding the maleic anhydride and the aluminium oxide, heating to the temperature of 250-260 DEG C, reacting for 80-90 minutes, then, dropwise adding the acrylic acid with the controlled speed that all the acrylic acid can be added within 45-50 minutes, sampling, dripping on a glass plate for cooling until the transparent color appears, cooling and placing in a cold storage, so as to obtain the final product. The preparation method has the advantages that the design is scientific and reasonable, the reaction is high in speed and moderate, the control is easy, the product has light color and excellent quality, and the softening point of the product reaches up to 185 DEG C above, and the production cost is reduced.
Description
technical field [0001] The invention belongs to a rosin deep processing method. Background technique [0002] Rosin is a rich renewable resource in my country, with an annual output of more than 600,000 tons, ranking first in the world. It is composed of a series of resin acids, with a unique chemical structure and multiple chiral centers. The carboxyl group and phenanthrene ring skeleton in the structure can undergo a series of chemical modifications, and it is a natural chiral source material. Rosin can be chemically modified to obtain a series of deep-processing products, which are widely used in various fields in daily life and play a pivotal role in the development of the national economy. The value of these deep-processed products is 2-10 times or even dozens of times higher than that of raw material rosin. At present, my country mainly earns foreign exchange by exporting gum rosin. my country is the country with the largest export volume of gum rosin, accounting for...
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IPC IPC(8): C09F1/04
Inventor 张健吴润秀王晶张雅静
Owner 张健