公开(公告)号：DE2645713A1

公开(公告)日：1978-04-13

申请号：DE2645713

申请日：1976-10-09

Applicant: BASF AG

Inventor： NOTTES GUENTHER DIPL CHEM DR ,  STARKE KLAUS DIPL ING

IPC: C10L1/14 ,  F02B3/06 ,  F02B77/04 ,  C10L1/22

公开(公告)号：DE2645235A1

公开(公告)日：1978-04-13

申请号：DE2645235

申请日：1976-10-07

Applicant: BASF AG

Inventor： NOTTES GUENTHER DIPL CHEM DR ,  BIPP HANSJOERG DIPL CHEM DR

IPC: C10L1/222 ,  C10L1/22

Abstract: Detergent additive comprises tri-esters of nitro-triacetic acid and/or tetra-esters of ethylene diamine tetracetic acid with 6-22 (6-18)C alcohols. The esters are pref. derived from 8-12C alcohols, esp. from 9-11 C alcohols made from olefins by OXO-synthesis. Amount added is 10-2000 (40-250) ppm. Prepn. is esp. by esterification of the free acids with alcohols in presence of a catalyst, e.g. mineral acid or pref. butyl titanate. The carburetter and inlet channels are kept clean. Deposits on the inlet valves are prevented by the high thermal stability of the additive, and existing deposits removed. The additives are burnt almost completely in the engine.