Patent FR-2919293-A1 (FR)
Title: Ethylene copolymer and graft vinyl ester, useful e.g. as filterability additives and outflow for hydrocarbon of distillation means, and base for diesel fuel, comprises a unit of ethylene derivative
Inventor: TORT FREDERIC
IPC: C08F210/02
Filed: 2007-07-27
Abstract: Ethylene copolymer and graft vinyl ester of molar mass of greater than 10000 g.mol -> 1>, comprises: a unit of ethylene derivative; a unit B; a unit C; and a unit D or D', where unit A is present at 29-97 mole%, unit B is present at 1-20 mole%, unit C is present at 0-10 moles%, unit D or D'in polymer is present at 0.6-34 mole%, unit Q in D or D'is present at 8.2-99.9 mole%. Ethylene copolymer and grafted vinyl ester of molar mass of greater than 10000 g.mol -> 1>, comprises: a unit of ethylene derivative of formula A ((CH 2-CH 2) n); a unit of formula B ((CH 2-CHOCOR 1) m - x); a unit of formula C ((CH 2-CHOH) x 1); and a unit of formula D ((CH 2-CHG) x 2) or D'((CH 2C(OCOCH 3)Q) x 2), where unit A is present at 29-97 mole%, unit B is present at 1-20 mole%, unit C is present at 0-10 moles%, unit D or D'in polymer is present at 0.6-34 mole%, unit Q in D or D'is present at 8.2-99.9 mole%. n : 45-650; m : 5-110; R 11-15C alkyl group; x1 : 0-0.95; x2 : 0-0.05; G : G1 of formula (-OCOCHCH 3Q-), G2 of formula (-OCOCH 2Q-) or G3 of formula (-OCOCH 2SQ-); Q : Q1 of formula ((-CH 2-CZCOOR q 1)-X q), where p1 is 1-800, Q2 of formula ((-CH 2-CZOCOR q 2) p 2-X q), preferably (OCOR q 2) is pivalate, isopentanoate, isohexanoate, 2-ethylhexanoate, isononanoate, isodecanoate, isotridecanoate, neononanoate, neodecanoate or neoundecanoate; p2 : 1-100; X : halo, preferably Br, I; q = 0-1; Z : halo, CH 3, R q 1, R q 2, or 1-03C, preferably 4-15C alkyl (optionally saturated); and x : 0.25-55. Independent claims are included for: (1) a process for preparing the graft polymers, comprising: providing ethylene polymer and vinyl ester; reaction of partial hydrolysis of alkyl esters in unit B as the hydrolysis rate of = 50% of hydrolysis, preferably less than 20%; reaction of partial esterification of the sites by acid halide of formula (XOC-CH 2-CH 3-jXj-CH 3), where the rate esterification is greater than 50%, preferably 100%; and polymerization reaction at initiation site carrying halogen, monomer of formula M1 (CH 2=CZCOOR) or M2 (CH 2=CZCOOR), where the degree of polymerization p1 of monomer M1 to give unit Q1, is 1-50, or the degree of polymerization of the monomer p2 of the monomer M2 to give unit Q2, is 1-6; (2) a concentrated solution of a polymer in the hydrocarbon distillate, having a concentration of greater than 50 wt.%, preferably 60-80 wt.%; (3) a distillate mean comprising at least a major part of hydrocarbon cup of distillate of sulfur content being less than 5000 ppm, preferably less than 50 ppm, and a minor part of at least an bifunctional additive of filterability and flow; (4) a diesel fuel comprising 0-500 ppm sulfur and at least a distillate; (5) a fuel comprising a distillate of which the minor part consists 10-5000 ppm of additive in combination with any other detergent additives, dispersants, emulsifier, anti-foaming agent, biocide, reodorants, cetane improvers, anti-corrosion agent, friction modifiers, lubricity improvers, combustion, cloud point, flow point, anti-sedimentation, and conductivity; (6) a heating oil comprising 0-5000 ppm of sulfur, and the distillate; and (7) a heavy fuel oil comprising the distillate. j : 1-2; X : Cl; Z : halo or CH 3; and R : 1-30 alkyl group.