Abstract:
Use of an effective concentration of polyalkenylsuccinimides comprising the reaction product of hydrocarbyl dicarboxylic acid producing reaction intermediates and nucleophilic reactants, as additives in unleaded gasoline compositions suitable in spark ignition engines, for reducing injector nozzle fouling in direct injection spark ignition engines. Furthermore, a fuel additive composition essentially comprising nitrogen-containing dispersants selected from polyisobutenyl monoamines and polyisobutenyl polyamines, carrier oils which are substantially free of nitrogen and selected from synthetic carrier oils and mineral carrier oils, and the above polyalkenylsuccinimides.
Abstract:
The present invention is in the field of processes for the generation of thin inorganic films on substrates. In particular, the present invention relates to a process comprising bringing a compound of general formula (I) into the gaseous or aerosol state L m ----M—X n (I) and depositing the compound of general formula (I) from the gaseous or aerosol state onto a solid substrate, wherein R is independent of each other hydrogen, an alkyl group, an alkenyl group, an aryl group or a silyl group, p is 1, 2 or 3, M is Ni or Co, X is a σ-donating ligand which coordinates M, wherein if present at least one X is a ligand which coordinates M via a phosphor or nitrogen atom, m is 1 or 2 and n is 0 to 3.
Abstract:
The present invention refers to a process to improve the thermostability of lubricant oils contained in an internal combustion engine, which process comprises operating the said engine with a fuel containing one or more ashless thermostability boosters selected from aromatic amines, substituted phenols and polycyclic phenolic compounds or mixtures thereof. The present invention further refers to a fuel additive composition and to a fuel composition comprising specific nitrogen-containing dispersants, carrier oils, the said ashless thermostability boosters, and optionally corrosion inhibitors and friction modifiers.
Abstract:
Polyisobutenamine der allgemeinen Formel R 1 CH 2 -NR 2 R 3 , in der R 1 einen von Isobuten und bis zu 20 Gew.-% n-Buten abgeleiteten Polyisobutylrest mit einem zahlenmittleren Molekulargewicht M n von 600 bis 770 darstellt und R 2 und R 3 unabhängig voneinander für Wasserstoff, einen C 1 -C 18 -Alkyl-, C 2 -C 18 -Alkenyl-, C 4 -C 18 -Cycloalkyl-, C 1 -C 18 - Alkylaryl-, Hydroxy-C 1 -C 18 -alkyl-, Poly(oxyalkyl)-, Polyalkylenpolyamin- oder einen Polyalkylenimin-Rest oder zusammen mit dem Stickstoffatom, an das sie gebunden sind, für einen heterocyclischen Ring stehen, eignen sich als Detergentien in Ottokraftstoffen, reduzieren das Ventilkleben und verbessern die Verträglichkeit der Detergentien mit Trägerölen sowie die Verträglichkeit in Kraftstoffzusammensetzungen, welche einen mineralischen Kraftstoffanteil und C 1 -C 4 -Alkanole enthalte.
Abstract:
The present invention describes the use of certain branched primary alkyl amines as additives for gasoline fuels, especially for reducing injector nozzle fouling in direct injection spark ignition engines.
Abstract:
The present invention is in the field of processes for the generation of thin inorganic films on substrates. In particular, the present invention relates to a process comprising bringing a compound of general formula (I) into the gaseous or aerosol state and depositing the compound of general formula (I) from the gaseous or aerosol state onto a solid substrate, wherein R 1 , R 2 , R 3 , R 4 , and R 5 are independent of each other hydrogen, an alkyl group, an alkenyl group, an aryl group or a silyl group, p is 1, 2, M is Ni or Co, X is a σ-donating ligand which coordinates M, m is 1 or 2 and n is 0 to 3.
Abstract:
The use of a complex ester obtainable by esterification reaction between aliphatic linear or branched C 2 - to C 12 -dicarboxylic acids, aliphatic linear or branched polyhydroxy alcohols with 3 to 6 hydroxyl groups, and, as chain stopping agents, aliphatic linear or branched C 1 - to C 30 -monocarboxylic acids or aliphatic linear or branched monobasic Ci- to C 30 -alcohols, as an additive in a fuel.
Abstract:
The use of a polyalkylene glycol of formula HO-(A-O) p -(CH 2 CH 2 -O) m -(A-O) q -H wherein A is a C 3 - to C 20 -alkylene group or a mixture of such alkylene groups, m is a number of from 2 to 100 and p and q are each numbers of from 1 to 100, as an additive in a fuel.