SBR latex for paving with solid content 45% was prepared by the vacuum con centration process with viscosity depressant and outside circulation heating.
用减粘剂法釜式（卧式蒸发器）外循环加热真空浓缩工艺生产了固体物质量分数为45 %的道路胶乳。
The ideal additives for industrial gear oil in cold area should be comprised of improver of viscosity index, pour point depressant, S-P extreme pressure wear inhibitor and benzotriazole fatty amine.
寒区工业齿轮油理想添加剂应由粘度指数改进剂、降凝剂、S - P型极压抗磨剂、酚型抗氧剂及苯三唑脂肪胺盐等组成。
Add different for different crude oil pour point depressant, dispersant or viscosity reducer can improve low-temperature fluidity of crude oil.
针对不同原油加入不同降凝剂、分散剂或降粘剂可以改善原油的低温流动性。
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