EP 1134275 B1 20060830 - Copolymer blends and their use as additive to improve the cold flow properties of middle distillates
Title (en)
Copolymer blends and their use as additive to improve the cold flow properties of middle distillates
Title (de)
Copolymermischungen und ihre Verwendung als Additiv zur Verbesserung der Kaltfliesseigenschaften von Mitteldestillaten
Title (fr)
Mélanges de copolymères et leurs utilisations comme additif pour l'amélioration des propriétés d'écoulement à froid de distillats moyens
Publication
Application
Priority
DE 10012269 A 20000314
Abstract (en)
[origin: EP1134275A2] An additive for improving the cold flow properties of intermediate distillates containing 10-95 wt.% of a copolymer (A) of lower olefins and vinyl esters, a copolymer (B) containing 40-60 mole % of bivalent structural units, and (C) various copolymers (different from A and B) of ethylene and one or more vinyl or acrylic esters which alone show activity in improving the cold flow properties of intermediate distillates is new. An additive for improving the cold flow properties of intermediate distillates containing 10-95 wt.% of a copolymer (A) of lower olefins and vinyl esters, containing (A1) 85-97 mole% of bivalent structural units of formula (I): R<1> and R<2> = H or Me, and (A2) at least 3 mole of bivalent structural units of formula (II): where R<3> = 6-16C saturated and branched alkyl with a tertiary C atom, bonding R<3> to a carboxyl function, a copolymer (B) containing (B1) 40-60 mole % of bivalent structural units , of formula (III): or (IV): where a and b each = 0 or 1, a+b = 1, (B2) 0-20 mole% of bivalent structural units of formula (V): and optionally (B3) 0-20 mole% of bivalent structural units derived from polyolefins, where these are derived from 3-5C monoolefins, where (a) R<4> = 10-40 C alkyl or alkenyl, alkoxyalkyl with 1-100 C alkoxy units and 1-30 C in alkyl residue, (b) R<5> = OCOR<1>2 or COOR<1>2, where R<1>2 = 1-3C alkyl, and (c) the number of C atoms of the (B3) structural units based on polyolefin molecules is 35-350, and (d) R<1>1 = H or Me, and optionally (C) various copolymers (different from A and B) of ethylene and one or more vinyl or acrylic esters which alone show activity in improving the cold flow properties of intermediate distillates. An Independent claim is included for: a fuel including an intermediate distillate and 0.001-2 wt.% of the additive.
IPC 8 full level
C08L 23/00 (2006.01); C08L 23/08 (2006.01); C08L 35/00 (2006.01); C10L 1/14 (2006.01); C10L 1/192 (2006.01); C10L 1/195 (2006.01); C10L 1/196 (2006.01); C10L 1/197 (2006.01); C10L 10/14 (2006.01); C10L 1/18 (2006.01); C10L 1/22 (2006.01)
CPC (source: EP US)
C10L 1/146 (2013.01 - EP US); C10L 1/195 (2013.01 - EP US); C10L 1/1973 (2013.01 - EP US); C10L 1/1963 (2013.01 - EP US); C10L 1/1966 (2013.01 - EP US); C10L 1/2364 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES FR GB GR IT NL
DOCDB simple family (publication)
EP 1134275 A2 20010919; EP 1134275 A3 20020807; EP 1134275 B1 20060830; BR 0100313 A 20011106; BR 0100313 B1 20110920; CA 2340525 A1 20010914; DE 10012269 A1 20011011; DE 10012269 C2 20030515; DE 50110842 D1 20061012; ES 2270911 T3 20070416; JP 2001294875 A 20011023; NO 20011255 D0 20010313; NO 20011255 L 20010917; US 2001034410 A1 20011025; US 6593426 B2 20030715
DOCDB simple family (application)
EP 01104848 A 20010228; BR 0100313 A 20010202; CA 2340525 A 20010313; DE 10012269 A 20000314; DE 50110842 T 20010228; ES 01104848 T 20010228; JP 2001070616 A 20010313; NO 20011255 A 20010313; US 80848101 A 20010314