发明名称 |
High purity paraffinic solvent compositions |
摘要 |
Discloses high purity solvent compositions constituted of n-paraffins and isoparaffins, with the isoparaffins containing predominantly methyl branches, and having an isoparaffin:n-paraffin ratio sufficient to provide superior low temperature properties and low viscosities. The solvent compositions are made by a process wherein a waxy, or long chain paraffinic feed, especially a Fischer-Tropsch wax, is reacted over a dual function catalyst to produce hydroisomerization and hydrocracking reactions at 700 DEG F.+ conversion levels ranging from about 20 to 90 wt.% to provide a C5-1050 DEG F. crude fraction. The C5-1050 DEG F. crude fraction is then topped via atmospheric distillation to produce a low boiling fraction with an upper end point boiling between about 650 DEG F. and 750 DEG F. The low boiling fraction is fractionated and a narrow boiling range solvent obtained therefrom; one which can be further divided into solvent grades of various boiling ranges.
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申请公布号 |
US5906727(A) |
申请公布日期 |
1999.05.25 |
申请号 |
US19980081364 |
申请日期 |
1998.05.19 |
申请人 |
EXXON RESEARCH AND ENGINEERING CO. |
发明人 |
WITTENBRINK, ROBERT JAY;SILVERBERG, STEVEN EARL;RYAN, DANIEL FRANCIS |
分类号 |
C07C9/14;C07C5/13;C10G2/00;C10G35/04;C10G45/58;C10G47/02;(IPC1-7):C10L1/04 |
主分类号 |
C07C9/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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