久久久久久久做爰片无码_久久精品国产精品亚洲精品_97精品尹人久久大香线蕉_2019精品国自产拍在线不卡_国产亚洲精品aa片在线观看网站_久久99热只有频精品8_国产欧美日韩在线在线播放_97国产露脸精品国产麻豆_国产亚洲无日韩乱码_麻豆成人av久久无码精品

佛山市寶林化工實業有限公司

Foshan Baolin Chemical Industry Co., Ltd.

新聞
訂閱我們,以獲得最新的產品和折扣信息。

Preparation Of Terpene Phenolic Resin

Under the action of acid catalyst, the phenol and formaldehyde are condensed by heating and then alkylated with terpene. The reaction temperature is 95-210 ℃. When the reaction temperature of 160 ~ 210 ° C, adding the appropriate amount of bleaching agent. And the low-boiling components are distilled off. The  produced by this method has the advantages of light color, high softening point and good oil solubility. Can replace the expensive tert-butyl phenolic resin and can be applied to paint, ink, cable, printing, rubber, plastics, adhesives and other industries.

Skype
E-Mail
TOP