A light colour 422 resin with high softening point and reasonable acid value was synthesized directly from pineoleoresin.
以松脂为原料直接合成一种色泽浅、软化点高、酸值合格的4 2 2树脂。
2
The primary biomass used for surfactant production usually is as follows: cellulose, lignin, starch, chitin, oil and fat and pineoleoresin(an exudate of pine trees) and so on.
开发表面活性剂的生物质资源有纤维素、木质素、淀粉、甲壳素、油脂和松脂等。
3
Significant difference exists between attacked trees and control trees in oleoresin flow in mason pine but not in exotic pines.