Additives for low-sulfur marine diesel

Patent metadata

Field	Value
Publication number	US-11174445-B2
Application number	US-201515501381-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Aug 7, 2014
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

This invention relates to a fuel oil composition, containing a low-sulfur marine diesel having a sulfur content of less than 1 wt. % and (A) at least one ethylene copolymer and (B) at least one comb polymer.

First claim

The invention claimed is:

1. A fuel oil composition comprising a low-sulfur marine diesel having a sulfur content of less than 1% by weight and
(A) at least one ethylene copolymer containing, as well as ethylene, 8.0 to 17 mol % of one or more vinyl and/or (meth)acrylic esters, and
(B) at least one comb polymer (B) comprising structural units B1 which derive from C 10 -C 28 -alkyl esters of unsaturated mono- and dicarboxylic acids, C 10 -C 28 -alkyl vinyl esters, C 10 -C 28 -alkyl vinyl ethers, C 10 -C 28 -alkyl allyl ethers and/or linear C 12 -C 30 -α-olefins, and wherein at least 20 mol % of the alkyl radicals bonded to the repeat structural units (B1) have 12 to 16 carbon atoms and at least 5 mol % of the alkyl radicals have 18 or more carbon atoms, in which the untreated low-sulfur marine diesel has a pour point of +6° C. or higher.

2. The fuel oil composition as claimed in claim 1 , in which the low-sulfur marine diesel has a viscosity of not more than 200 mm 2 /s at 40° C.

3. The fuel oil composition as claimed in claim 1 , in which the low-sulfur marine diesel has a viscosity of not more than 11 mm 2 /s at 40° C.

4. The fuel oil composition as claimed in claim 1 , wherein the low-sulfur marine diesel comprises a residue from the further processing of a mineral oil distillate.

5. The fuel oil composition as claimed in claim 1 , wherein the low-sulfur marine diesel has a sulfur content of 0.1% by weight or lower.

6. The fuel oil composition as claimed in claim 4 , wherein the residue from the further processing of a mineral oil distillate which is used for production of the low-sulfur marine diesel contains at least 3% by weight of paraffins having more than 24 carbon atoms.

7. The fuel oil composition as claimed in claim 4 , wherein the residue from the further processing of a mineral oil distillate which is used for production of the low-sulfur marine diesel has a pour point of 9° C. or higher.

8. The fuel oil composition as claimed in claim 1 , wherein the ethylene copolymer (A) contains, as well as ethylene and 8.0 to 17 mol % of one or more vinyl and/or (meth)acrylic esters, also 0.1 to 5 mol % of one or more olefins having 3-8 carbon atoms.

9. The fuel oil composition as claimed in claim 8 , in which the olefin is propene.

10. The fuel oil composition as claimed in claim 1 , wherein the ethylene copolymer (A) contains one or more vinyl esters derived from carboxylic acids having 3 to 12 carbon atoms.

11. The fuel oil composition as claimed in claim 10 , in which the vinyl ester is vinyl acetate.

12. The fuel oil composition as claimed in claim 1 , wherein the number-average molecular weight M n of the ethylene copolymer (A) is between 1000 and 7000 g/mol.

13. The fuel oil composition as claimed in claim 1 , wherein the comb polymer (B) includes at least 40 mol % of repeat structural units (B1) that bear C 10 -C 28 -alkyl radicals.

14. The fuel oil composition as claimed in claim 1 , wherein the sum S

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Assignees

• Clariant Int Ltd

Inventors

• Feustel Michael
• Krull Matthias
• Morscher Michael

Classifications

• C10L2200/0438

  Middle or heavy distillates, heating oil, gasoil, marine fuels, residua · CPC title

• C10L2270/026

  for diesel engines, e.g. automobiles, stationary, marine · CPC title

• C10L2230/14

  for improving storage or transport of the fuel · CPC title

• C10L1/1973

  mono-carboxylic · CPC title

• C10L1/1966

  poly-carboxylic · CPC title