EP 0329756 B1 19940511 - METHACRYLATE POUR POINT DEPRESSANTS AND COMPOSITIONS.
Title (en)
METHACRYLATE POUR POINT DEPRESSANTS AND COMPOSITIONS.
Title (de)
GIESSPUNKTERNIEDRIGENDE METHACRYLATADDITIVE UND -ZUSAMMENSETZUNGEN.
Title (fr)
ADDITIFS ET COMPOSITIONS A BASE DE METHACRYLATE ABAISSANT LE POINT D'ECOULEMENT.
Publication
Application
Priority
- US 8703587 A 19870819
- US 8802730 W 19880818
Abstract (en)
[origin: WO8901507A1] A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit (I), wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.50, and n is an integer indicating the number of repeating units, the value of n being sufficient to provide a molecular weight of 10,000 to 300,000 for the polymer, the pour point depressant having the capacity to reduce the stable pour point to -35 DEG C, while being compatible with other additives such as viscosity index improvers and detergents.
IPC 1-7
IPC 8 full level
C10M 145/14 (2006.01); C10M 157/00 (2006.01); C10M 167/00 (2006.01); C10N 20/04 (2006.01); C10N 30/02 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP)
C10M 133/56 (2013.01); C10M 137/10 (2013.01); C10M 139/00 (2013.01); C10M 143/00 (2013.01); C10M 143/02 (2013.01); C10M 143/04 (2013.01); C10M 145/14 (2013.01); C10M 149/10 (2013.01); C10M 157/00 (2013.01); C10M 159/22 (2013.01); C10M 159/24 (2013.01); C10M 167/00 (2013.01); C10M 2205/00 (2013.01); C10M 2205/02 (2013.01); C10M 2205/022 (2013.01); C10M 2205/024 (2013.01); C10M 2207/027 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2209/084 (2013.01); C10M 2215/04 (2013.01); C10M 2215/086 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10M 2217/028 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2219/046 (2013.01); C10M 2219/089 (2013.01); C10M 2223/045 (2013.01); C10M 2227/00 (2013.01); C10M 2227/06 (2013.01); C10M 2227/061 (2013.01); C10M 2227/062 (2013.01); C10M 2227/063 (2013.01); C10M 2227/065 (2013.01); C10M 2227/066 (2013.01); C10N 2010/04 (2013.01)
Citation (examination)
- US 3869396 A 19750304 - VAN DE KRAATS EDUARD J, et al
- Erdöl und Kohle, No.11, November 1955, pp. 793-796
- Ullmanns Encyklopädie der technischen Chemie, 4th edition, vol. 20, pp. 548-549, Verlag Chemie 1981
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8901507 A1 19890223; CA 1339677 C 19980217; DE 3889533 D1 19940616; DE 3889533 T2 19941201; EP 0329756 A1 19890830; EP 0329756 A4 19891228; EP 0329756 B1 19940511; JP H02500528 A 19900222; JP H078990 B2 19950201
DOCDB simple family (application)
US 8802730 W 19880818; CA 575169 A 19880819; DE 3889533 T 19880818; EP 88907922 A 19880818; JP 50729188 A 19880818