Crystallization-resistant rosin and preparation method thereof
An anti-crystallization and rosin technology, which is applied in the chemical modification of rosin adhesives, adhesives, and natural resins, can solve problems such as reducing the crystallization tendency of rosin, and achieve simple preparation methods, good anti-crystallization performance, and excellent anti-crystallization performance. Effect
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Embodiment 1
[0027] An embodiment of the anti-crystallization rosin of the present invention is prepared by the following method:
[0028] (1) get 600 grams of masson pine rosin, index is: softening point 78.2 ℃ (recording by ring and ball method), acid value 177.8mg KOH / g, color 5.5 (iron-cobalt look); It is pulverized and packed in the reaction bottle, Simultaneously add 0.9 g of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, vacuumize, heat, the temperature is controlled at 280°C, and the vacuum degree is maintained at 0.065MPa. Reaction for 3 hours;
[0029] (2) After the reaction, the vacuum is released under the protection of nitrogen, the temperature is lowered to 150° C., and the material is discharged to obtain the anti-crystallization rosin.
[0030] The crystallization-resistant rosin resin anhydride and other related indicators prepared in this implementation were detected.
[0031] (1) Detection of resin anhydride content
[0032] Resin ...
Embodiment 2
[0044] An embodiment of the anti-crystallization rosin of the present invention is prepared by the following method:
[0045] (1) get 600 grams of masson pine rosin, index is: softening point 78.2 ℃ (recording by ring and ball method), acid value 177.8mg KOH / g, color 5.5 (iron-cobalt look); It is pulverized and packed in the reaction bottle, At the same time, add 0.9 grams of n-octadecyl alcohol ester of β-(4-hydroxyphenyl-3,5-di-tert-butyl)propionate, vacuumize and heat, the temperature is controlled at 250°C, and the vacuum degree is kept at 0.09MPa. Down reaction 6 hours;
[0046] (2) After the reaction, the vacuum is released under the protection of nitrogen, the temperature is lowered to 150° C., and the material is discharged to obtain the anti-crystallization rosin.
[0047] The crystallization-resistant rosin resin anhydride and other related indicators prepared in this implementation were detected, and the detection method was the same as that in Example 1.
[0048]...
Embodiment 3
[0050] An embodiment of the anti-crystallization rosin of the present invention is prepared by the following method:
[0051] (1) get 600 grams of pine rosin, the index is: 78.2 ℃ of softening points (recording by ring and ball method), acid value 177.8mg KOH / g, color 5.5 (iron-cobalt color); Simultaneously add 0.9 g of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, vacuumize, heat, the temperature is controlled at 285°C, and the vacuum is maintained at 0.045MPa React for 1.5 hours;
[0052] (2) After the reaction, the vacuum is released under the protection of nitrogen, the temperature is lowered to 150° C., and the material is discharged to obtain the anti-crystallization rosin.
[0053] The crystallization-resistant rosin resin anhydride and other related indicators prepared in this implementation were detected, and the detection method was the same as that in Example 1.
[0054]The test results show that the anti-crystallization rosin...
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Abstract
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