(19) |
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(11) |
EP 0 100 665 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
28.03.1984 Bulletin 1984/13 |
(43) |
Date of publication A2: |
|
15.02.1984 Bulletin 1984/07 |
(22) |
Date of filing: 29.07.1983 |
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(84) |
Designated Contracting States: |
|
DE FR GB |
(30) |
Priority: |
30.07.1982 US 403607
|
(71) |
Applicant: CHEVRON RESEARCH COMPANY |
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() |
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|
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(54) |
Deposit control additives for hydrocarbon fuels and lubricants for use in internal
combustion engines |
(57) Additives for use in internal combustion engines are provided which particularly
in unleaded fuels maintain cleanliness of the intake system without contributing to
combustion chamber deposits. The additives are hydrocarbyl-terminated poly(oxyalkylene)
polyamine ethanes comprising a hydrocarbyl-terminated poly(oxyalkylene) chain formed
from 1 to 30 2-5 carbon oxyalkylene units bonded to an ethane or branched ethane chain
containing from 2 to 8 carbon atoms in turn bonded to a nitrogen atom of a polyamine
having from 2 to 12 amine nitrogens and from 2 to 40 carbon atoms with a carbon:nitrogen
ratio between 1:1 and 10:1. The terminal hydrocarbyl group contains from 1 to 30 carbon
atoms and the additive has a molecular weight in the range from 300 to 2500. The additive
may be formulated as a concentrate in an inert oleophilic organic solvent or may be
formulated as a lubricant composition for use in an internal combustion engine by
incorporation in a lubricating oil.