EP 0931824 B1 20050831 - Process to improve the cold flow properties of fuel oils
Title (en)
Process to improve the cold flow properties of fuel oils
Title (de)
Verfahren zur Verbesserung der Kaltfliesseigenschaften von Brennstoffölen
Title (fr)
Procédés d'amélioration des propriétés d'écoulement à froid d'huiles combustibles
Publication
Application
Priority
DE 19802690 A 19980124
Abstract (en)
[origin: EP0931824A2] An additive containing copolymers of lower olefins and vinyl esters, and copolymers and terpolymers of ethylene and vinyl esters or acrylic acid esters is used to improve the cold flow properties of fuels. Process for improving the cold flow properties of fuels containing less than 500 ppm sulfur and at least 8 wt.% n-paraffins having a chain length of 8 C or longer comprises adding an additive comprising a mixture of either (A1) 15-50 wt.% copolymer of lower olefins and vinyl esters containing (a) up to 96 mol.% bivalent structure of formula (I): CH2CR1R2 (where R1 and R2 = hydrogen or methyl, and (b) 1-10 mol.% bivalent structure of formula (II): CH2CHOCOR3 (where R3 = 6-16 C alkyl having a tertiary carbon atom); or (A2) 15-50 wt.% copolymer of lower olefins and vinyl esters containing (a) up to 96 mol.% bivalent structure of formula (I), (b) 1-10 mol.% bivalent structure of formula (II), and (c) up to 10 mol.% of bivalent structure of formula (III): CH2CHOCOCH3, in which the sum of the structural units of formula (II) and (III) is 4-12 mol.%; and (B) 85-50 wt.% of a further copolymer or terpolymer of ethylene and vinyl esters or acrylic acid esters.
IPC 1-7
IPC 8 full level
C10L 1/192 (2006.01); C10L 1/14 (2006.01); C10L 1/195 (2006.01); C10L 1/196 (2006.01); C10L 1/197 (2006.01); C10L 10/18 (2006.01)
CPC (source: EP US)
C10L 1/143 (2013.01 - EP US); C10L 1/195 (2013.01 - EP US); C10L 1/1973 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FR GB NL SE
DOCDB simple family (publication)
EP 0931824 A2 19990728; EP 0931824 A3 19990915; EP 0931824 B1 20050831; AT E303426 T1 20050915; CA 2260169 A1 19990724; CA 2260169 C 20080916; DE 19802690 A1 19990729; DE 19802690 C2 20030220; DE 59813030 D1 20051006; ES 2248874 T3 20060316; JP 4370011 B2 20091125; JP H11256171 A 19990921; NO 990293 D0 19990122; NO 990293 L 19990726; US 6110238 A 20000829
DOCDB simple family (application)
EP 98124678 A 19981224; AT 98124678 T 19981224; CA 2260169 A 19990122; DE 19802690 A 19980124; DE 59813030 T 19981224; ES 98124678 T 19981224; JP 1479699 A 19990122; NO 990293 A 19990122; US 23572399 A 19990122