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Corrosion inhibitors for fuels and lubricants

专利摘要

Die vorliegende Erfindung betrifft neue Verwendungen von Korrosionsinhibitoren in Kraft- und Schmierstoffen. ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2021177666
申请日期:
2021-06-04
专利申请人:
巴斯夫欧洲公司
分类号:
["C10L1/16","C10L10/04","C10L1/14","C10L1/222","C10N20/04","C10N30/12","C10N30/00","C10N70/00"]
发明/设计人:
GARCIA CASTRO, IVETTE ， MEZGER, JOCHEN ， PERETOLCHIN, MAXIM ， FLORES-FIGUEROA, AARON
权利要求: 1. The use of copolymers obtainable by - in a first reaction step (I) copolymerizing (A) maleic anhydride, (B) at least one α-olefin having from at least 12 up to and including 30 carbon atoms, (C) optionally at least one further aliphatic or cycloaliphatic olefin which has at least 4 carbon atoms and is different than (B) and (D) at least one (meth)acrylic ester of alcohols having at least 5 carbon atoms, followed by - in a second reaction step (II) partly or fully hydrolyzing the anhydride functionalities present in the copolymer obtained from (I) and/or partly hydrolyzing carboxylic ester functionalities present in the copolymer obtained from (I), as corrosion inhibitors in fuels or lubricants, preferably in fuels, more preferably in fuels having a content of alkali metals and/or alkaline earth metals and/or zinc of at least 0.1 ppm by weight, where at least 10% of the anhydride functionalities are hydrolyzed in reaction step (II).2. The use according to claim 1, wherein the alkali metals are selected from the group consisting of sodium and potassium.3. The use according to either of the preceding claims, wherein the alkaline earth metals are selected from the group consisting of magnesium and calcium.4. The use according to any of the preceding claims, wherein component (B) is selected from the group consisting of 1-dodecene, 1-tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, 1-eicosene, 1-docosene, 1-tetracosene, 1-hexacosene and mixtures thereof.5. The use according to any of the preceding claims, wherein no component (C) is present.6. The use according to any of claims 1 to 4, wherein component (C) is selected from the group consisting of 1-butene, 2-butene, isobutene, pentene isomers, hexene isomers, heptene isomers, octene isomers, nonene isomers, decene isomers, undecene isomers and mixtures thereof.7. The use according to any of claims 1 to 4, wherein component (C) is at least one polymer having more than 30 carbon atoms of propene, 1-butene, 2-butene or isobutene or olefin mixtures comprising the latter, having an average molecular weight Mw in the range from 500 to 5000 g/mol.8. The use according to any of the preceding claims, wherein component (D) is at least one (meth)acrylic ester of C5- to C18-alkanols.9. The use according to any of claims 1 to 7, wherein component (D) is selected from the group consisting of dodecyl acrylate, 2-ethylhexyl acrylate and 2-propylheptyl acrylate.10. The use according to any of the preceding claims, wherein the fuel is selected from diesel fuels, biodiesel fuels, gasoline fuels, and alkanolcontaining gasoline fuels.11. The use according to any of the preceding claims, wherein, in reaction step (II), the anhydride functionalities present in the copolymer are essentially fully hydrolyzed.12. The use according to any of the preceding claims, wherein the fuel additionally comprises at least one detergent additive (Da) having a hydrophobic hydrocarbyl radical having a number-average molecular weight (Mn) of 85 to 20 000 and at least one monoor polyamino group having up to 6 nitrogen atoms, where at least one nitrogen atom has basic properties, preferably at least one polyalkenemonoor polyalkenepolyamine which is obtainable based on polypropene, polybutene or polyisobutene with Mn = 500 to 2500 by hydroformylation and reductive amination with ammonia, monoamines of the polyamines.