1·ResultsSupercritical CO2 adding nonionic surfactant mixed system of the polyol could significantly enhance extraction rate of Salvianolic acid B.
结果超临界CO2萃取中加入非离子表面活性剂的多元醇混合体系可大大提高丹酚酸b的提取率。
2·Preparation of Polyether polyol and its applications in the production of leather finishing have been prescnted in this article.
叙述了用于皮革涂饰剂生产上的聚醚多元醇制备及在皮革涂剂生产上的应用。
3·The functionality of the polyether polyol is determined by the number of active hydroxyl groups per molecule.
功能聚醚多元醇，是由一些积极的羟基，每个团体分子。
4·The status of polyether polyol in domestic and abroad was introduced, including the supply in market, consumer demand, market price and the development trend.
介绍了国内外聚醚多元醇的市场供应、市场需求及市场价格状况及发展趋势。
5·The selection of raw materials such as iso- cyanate, polyol and silicone etc, and the ratio of isocyanate and hydroxy are the main factors affecting the properties of SPU sealant.
异氟酸酯、 多元醇、硅烷等原材料的选择以及异氰酸酯基与羟基的配比是影响S PU 密封胶性能的主要因素。