Dysprosium oxide rosin acrylic resin preparation method
A technology of rosin acrylic acid and dysprosium oxide, which is applied in the field of rosin deep processing, can solve the problems of product types, preparation methods, slow reaction, and long time consumption, etc., and achieve the effect of light color, fast reaction speed and good quality of the product
Active Publication Date: 2015-09-30
桐乡宏晨工业设计有限公司
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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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[0008] In the preparation method of dysprosium oxide rosin acrylic resin of the present invention, the reaction becomes stable, moderate and easy to control through optimization of material ratio, appropriate catalyst and reaction time control, thereby obtaining light-colored and high-quality products 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.
[0009] The preparation method of dysprosium oxide rosin acrylic resin of the present invention is characterized in that: material ratio is, rosin: acrylic acid: the molar ratio of dysprosium oxide is 1:0.5:0.2; Its technology comprises the following steps, rosin is heated and melted under inert gas, Raise the temperature to 180-200°C, add dysprosium oxide, raise the temperature to 250-260°C and react for 8...
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Abstract
The invention discloses a preparation method for a dysprosium oxide rosin acrylic resin. The dysprosium oxide rosin acrylic resin is characterized in that the molar ratio of rosin to acrylic acid to dysprosium oxide is 1:0.5:0.2; a technology comprises the following steps: heating and smelting the rosin under the inert gas, increasing the temperature to 180-200 DEG C, adding the dysprosium oxide, increasing the temperature to 250-260 DEG C, and reacting for 80-90 min, dropwise adding the acrylic acid within 45-50 min, taking a sample and dripping on a glass plate for cooling until the solution is transparent, and cooling, so that the dysprosium oxide rosin acrylic resin is obtained. The preparation method has the advantages that the design is scientific and reasonable, the reaction speed is high, moderate and easy to control, the product color is light, the softening point is as high as 185 DEG C above, the quality is good, and the manufacturing 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 张雅静张健
Owner 桐乡宏晨工业设计有限公司