发明名称 |
VERFAHREN ZUR HERSTELLUNG VON CARBAMATEN |
摘要 |
The invention provides a process for preparing a carbamate which comprises contacting in the presence of a base a polyolefin-secondary-amine with a chloroformate compound of formula (IV), in which R<1> is hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms, thereby producing a polyolefin-N-substituted-carbamate of formula (I) in which R is a polyolefin radical having an average molecular weight in the range from 500 to 9,900, R<1> is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms, and A is derived from an N-substituted amino group in which the substituent is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms, and removing hydrogen chloride formed in producing the carbamate of formula (I) as a salt. The process facilitates preparation of the carbamates of formula (I), which are known gasoline additives, in improved yield. |
申请公布号 |
DE69408873(D1) |
申请公布日期 |
1998.04.09 |
申请号 |
DE1994608873 |
申请日期 |
1994.12.21 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., DEN HAAG/S'GRAVENHAGE, NL |
发明人 |
SEMPLE, THOMAS, CARL, FRIENDSWOOD, TX 77546, US;THOMASON, TERRY, BLANE, HOUSTON, TX 77077, US |
分类号 |
C08F8/30;C08F8/00;C08F8/10;C08G71/00;C08G71/04;C10L1/22;C10L1/238;C10L1/2383;C10L1/2387;C10L10/00 |
主分类号 |
C08F8/30 |
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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