Modified rosin phenolic resin and preparation method thereof

• Main Authors: DENG MINGQUAN, LI YUEQING, LAN ZHIMING, YAO YIJIAN
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a preparation method of modified rosin phenolic resin, and belongs to the technical field of modified resin preparation, and the preparation method comprises the following steps: adding rosin with an aromatic nitroso compound and 2-nitroso pyrimidine in an ice-water bath under the catalytic conditions of propyl zinc bromide and diisopropyl zinc to prepare a rosin derivative, reacting the rosin derivative and alkyl phenolic resin slurry at high temperature to obtain a condensation product, and esterifying the condensation product and polyol to prepare the modified rosin phenolic resin. The resin prepared by the preparation method disclosed by the invention has the excellent performances of high accommodation degree, high softening point, low acid value, high viscosity and the like. 本发明提供一种改性松香酚醛树脂的制备方法，属于改性树脂制备技术领域，包括以下步骤：松香在丙基溴化锌和二异丙基锌的催化条件下，在冰水浴中与芳香亚硝基化合物和2-亚硝基嘧啶加成制得松香衍生物，松香衍生物再与烷基酚醛树脂浆在高温下得到缩合产物，缩合产物再与多元醇发生酯化后制得所述改性松香酚醛树脂；本发明所述制备方法制得的树脂具有容纳度大、软化点高、酸值低、粘度高等优异性能。