raw rosin

英 [rɔː ˈrɒzɪn]

美 [rɔː ˈrɑːzn]

【化】松脂

So it is an important raw material for the production of paper, coatings, inks, rubber, soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.
是造纸、涂料、油墨、橡胶、肥皂、电子、食用酯胶、松香酯树脂等工业的重要原料。
Research on Raw Rosin Decolorization& Depuration Process
粗松香脱色提纯的工艺研究
Test research shows that quality requirement for the raw material of rosin foaming agent may be relaxed and alkali suitable for use is Na2CO3;
试验研究表明：松香胶泡沫剂的原材料质量要求可以放宽，碱以采用Na2CO3为好；
With rosin produced in Northeast China as a raw material, the disproportionated rosin is prepared under quite high temperature and with Pd-C used as catalyst.
以东北产松香为原料，在较高温度下用铝炭催化剂进行歧化反应，制取歧化松香。
The influence of the kind of catalysts and their dosage, the ratio of raw materials on synthesis of rosin modified nonyl phenol-aldehyde epoxy resin ( for short RNPAE) were studied.
考察催化剂种类、催化剂用量、原料配比等因素对合成松香改性壬基酚醛环氧树脂的影响，并在得到的最佳实验条件下，合成出松香改性壬基酚醛环氧树脂（简称RNPAE）。