发明授权
US4670130A The use of dialkyl fumarate-vinyl acetate copolymers as dewaxing aids
失效
使用富马酸二乙酯 - 乙酸乙烯酯共聚物作脱蜡助剂
- 专利标题： The use of dialkyl fumarate-vinyl acetate copolymers as dewaxing aids
- 专利标题（中）： 使用富马酸二乙酯 - 乙酸乙烯酯共聚物作脱蜡助剂
-
申请号： US589536申请日： 1984-03-14
-
公开(公告)号： US4670130A公开(公告)日： 1987-06-02
- 发明人: Abraham R. Dekraker , David J. Martella
- 申请人： Abraham R. Dekraker , David J. Martella
- 申请人地址： NJ Florham Park
- 专利权人： Exxon Research & Engineering Co.
- 当前专利权人： Exxon Research & Engineering Co.
- 当前专利权人地址： NJ Florham Park
- 主分类号： C08F218/00
- IPC分类号： C08F218/00 ; C08F218/02 ; C08F218/08 ; C08F220/00 ; C08F220/10 ; C08F222/10 ; C08F222/14 ; C10G73/04
摘要：
Copolymers of dialkyl fumarate and vinyl acetate having Specific Viscosities of at least 2.5 at 2% polymer concentration in xylene at 40.degree. C., and wherein at least 50 wt. % of said alkyl groups are C.sub.20 to C.sub.24, are useful as dewaxing aids, particularly in propane dewaxing.
公开/授权文献
- US5710734A Semiconductor memory device and data writing method thereof 公开/授权日：1998-01-20
信息查询
