EP 0524783 A1 19930127 - Use of lubricating oil compositions.
Title (en)
Use of lubricating oil compositions.
Title (de)
Verwendung von Schmierölzusammensetzungen.
Title (fr)
Utilisation de compositions d'huile lubrifiante.
Publication
Application
Priority
- GB 9115911 A 19910723
- GB 9115912 A 19910723
Abstract (en)
Use of a lubricating oil composition as an inlet-valve deposit inhibitor characterised in that the lubricating oil comprises a polyether of the formula RX[(CxH2xO)n(CyH2yO)pH]m wherein R is either an alkyl or alkylphenyl group having from 7 to 30 carbon atoms, X is selected from 0,S or N, or RX together represent H, x is an integer from 2 to 4, y is an integer from 6 to 30, m is 1 when X is O or S or when RX together represents H, or m is 2 when x is N, and n and p are such that the polyether contains between 0 and 40% by weight of (CyH2yO) units and between 35 and 80% by weight of (CxH2xO) units is disclosed. In particular, it is preferred to use a lubricating oil composition consisting essentially of the polyether, a synthetic lubricating oil and optionally a mineral oil. In the preferred polyethers, the (CxH2xO) units comprise at least 50 mol % of oxypropylene units, preferably 100 mol %. Preferred synthetic lubricating oils are polyalphaolefins and polyol esters.
IPC 1-7
C10M 111/04; C10M 133/08; C10M 145/34; C10M 145/36; C10M 151/04; C10M 169/04; C10N 40/25
IPC 8 full level
C10M 111/04 (2006.01); C10M 133/08 (2006.01); C10M 145/34 (2006.01); C10M 145/36 (2006.01); C10M 151/04 (2006.01); C10M 169/04 (2006.01)
CPC (source: EP)
C10M 101/02 (2013.01); C10M 105/36 (2013.01); C10M 105/38 (2013.01); C10M 107/02 (2013.01); C10M 107/34 (2013.01); C10M 111/04 (2013.01); C10M 133/08 (2013.01); C10M 145/34 (2013.01); C10M 145/36 (2013.01); C10M 151/04 (2013.01); C10M 169/044 (2013.01); C10M 2203/1006 (2013.01); C10M 2203/1025 (2013.01); C10M 2203/1045 (2013.01); C10M 2203/1065 (2013.01); C10M 2203/1085 (2013.01); C10M 2205/00 (2013.01); C10M 2205/0206 (2013.01); C10M 2205/026 (2013.01); C10M 2207/281 (2013.01); C10M 2207/282 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/283 (2013.01); C10M 2207/2835 (2013.01); C10M 2207/2855 (2013.01); C10M 2207/286 (2013.01); C10M 2207/34 (2013.01); C10M 2209/084 (2013.01); C10M 2209/1033 (2013.01); C10M 2209/104 (2013.01); C10M 2209/1045 (2013.01); C10M 2209/105 (2013.01); C10M 2209/1055 (2013.01); C10M 2209/106 (2013.01); C10M 2209/1065 (2013.01); C10M 2209/107 (2013.01); C10M 2209/1075 (2013.01); C10M 2209/108 (2013.01); C10M 2209/1085 (2013.01); C10M 2209/1095 (2013.01); C10M 2215/042 (2013.01); C10M 2221/04 (2013.01); C10M 2221/041 (2013.01); C10M 2221/043 (2013.01); C10N 2020/01 (2020.05); C10N 2040/00 (2013.01); C10N 2040/25 (2013.01); C10N 2040/251 (2020.05); C10N 2040/255 (2020.05); C10N 2040/28 (2013.01); C10N 2040/30 (2013.01); C10N 2040/32 (2013.01); C10N 2040/34 (2013.01); C10N 2040/36 (2013.01); C10N 2040/38 (2020.05); C10N 2040/40 (2020.05); C10N 2040/42 (2020.05); C10N 2040/44 (2020.05); C10N 2040/50 (2020.05)
Citation (search report)
- [YD] EP 0355977 A1 19900228 - BP CHEM INT LTD [GB]
- [Y] US 3901665 A 19750826 - POLSS PERRY
- [A] WO 8501956 A1 19850509 - CHEVRON RES [US]
- [A] US 4877416 A 19891031 - CAMPBELL CURTIS B [US]
- [A] US 5006130 A 19910409 - AIELLO ROBERT P [US], et al
- [AP] EP 0460957 A2 19911211 - TONEN CORP [JP]
- [AP] DATABASE WPIL Derwent Publications Ltd., London, GB; AN 92-146874 [18] & JP-A-4 088 094 (TONEN) 19 March 1992
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92306593 A 19920717