发明名称 |
METHOD OF SYNTHESIS OF MONOALKYLPHENOL POLYETHYLENE GLYCOL ESTERS |
摘要 |
organic chemistry, chemical technology. SUBSTANCE: invention relates to synthesis of nonionogenic surface- active substances, in part, hydroxyethylated monoalkyl- -phenols based on propylene (neonol) trimers. Process is carried out by mixing monoalkylphenols with 20-36% sodium hydroxide an aqueous solution taken in the amount providing sodium hydroxide concentration in monoalkylphenols feeding for hydroxyethylation in the range 0.10- 0.24 mas. %. Obtained mixture is dehydrated at 120-145 C in film evaporator unit followed by carrying out the process of hydroxyethylation at 160-200 C and 0.4-0.7 MPa in reactor of periodic working at circulation of reactive mass through an external heat exchanger. For dehydration a mixture of alkylphenols and sodium hydroxide an aqueous solution are fed at temperature equal or less by 1-9 C that in film evaporator unit. EFFECT: improved quality of product with respect of its color index and content of impurity of polyethylene glycols. 1 tbl, 1 dwg, 5 ex
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申请公布号 |
RU2176238(C1) |
申请公布日期 |
2001.11.27 |
申请号 |
RU20000110895 |
申请日期 |
2000.05.04 |
申请人 |
EKHIM";NIZHNEKAMSKNEFT AOOT |
发明人 |
KAPUSTIN P.P.;GALIMOV R.KH.;SHAKIROV SH.K.;MULLANUROV F.A.;KHISAEV R.SH.;SUCHKOV JU.P. |
分类号 |
C07C43/11;C07C41/03;C11D1/70;(IPC1-7):C07C43/11 |
主分类号 |
C07C43/11 |
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