Hydrocarbon fluid having improved cold temperature properties
AssigneeTotalenergies Onetech
InventorsDidier Bedel, Clarisse Doucet, Frédéric Tort
Life of this patent
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Abstract
A composition includes (a) a hydrocarbon fluid comprising less than 1000 ppm by weight of aromatics, a weight ratio normal paraffins/isoparaffins ranging from 0.2 to 1.0 and having an initial boiling point and a final boiling point in the range from 265° C. to 380° C., and (b) a copolymer derived from alpha-olefin monomers and vinyl acetate type monomers and optionally acrylate type monomers.
Claims18
A composition comprising:
- (a) a hydrocarbon fluid comprising less than 1000 ppm by weight of aromatics, having a weight ratio normal paraffins/isoparaffins ranging from 0.2 to 1.0 and having an initial boiling point and a final boiling point in the range from 265° C. to 380° C., the hydrocarbon fluid comprising a naphthene content ranging from 5 to 40% wt, based on the total weight of the hydrocarbon fluid,
- (b) a copolymer consisting of n repetition units of formula (I), m repetition units of formula (II) and p repetition units of formula (III):
- Wherein:
- R1 is selected from hydrogen and an alkyl group having from 1 to 4 carbon atoms,
- R2 is selected from hydrogen and a methyl group,
- R3 is selected from an alkyl group having from 1 to 24 carbon atoms,
- R4 is selected from hydrogen and a methyl group,
- R5 is selected from an alkyl group having from 1 to 24 carbon atoms,
- n and m are independently to each other integers ranging from 2 to 500,
- p ranges from 0 to 200.
A method to improve the low temperature properties of a hydrocarbon fluid, the method comprising adding a copolymer into the hydrocarbon fluid, the copolymer consisting of n repetition units of formula (I), m repetition units of formula (II) and p repetition units of formula (III):
- Wherein:
- R1 is selected from hydrogen and an alkyl group having from 1 to 4 carbon atoms,
- R2 is selected from hydrogen and a methyl group,
- R3 is selected from an alkyl group having from 1 to 24 carbon atoms,
- R4 is selected from hydrogen and a methyl group,
- R5 is selected from an alkyl group having from 1 to 24 carbon atoms,
- n and m are independently to each other integers ranging from 2 to 500,
- p ranges from 0 to 200,
- the hydrocarbon fluid comprising less than 1000 ppm by weight of aromatics, a weight ratio normal paraffins/isoparaffins ranging from 0.2 to 1.0 and having an initial boiling point and a final boiling point in the range from 265° ° C. to 380° C.
Dependencies are inferred from the claim text.