Seal compatibility additive to improve fluoropolymer seal compatibility of lubricant compositions
AssigneeBASF SE
InventorsKevin DeSantis, Michael Hoey, Al Jung, Phil Rabbat, David Chasan, Stephen Jones
Life of this patent
Estimating the term…
Abstract
This disclosure is directed to an additive package for a lubricant composition that provides improved compatibility with fluoropolymer seals. The additive package comprises a seal compatibility additive. The disclosure is also directed to a lubricant composition comprising a base oil and a seal compatibility additive. The seal compatibility additive improves the compatibility with fluoropolymer seals of the resultant lubricant composition.
Claims17
An additive package for a lubricant composition that provides improved compatibility with fluoropolymer seals, said additive package comprising:
- a fluoropolymer seal compatibility additive having a boiling point of from 150 to 450° C. at 1 atmosphere, wherein the fluoropolymer seal compatibility additive comprises
- an alkyl halide compound having a general formula:
- CnH(2n+2−m)Xm (I)
- where n ranges from 2 to 15, 1≤m≤(2n+2), X is iodine;
- and
- wherein the alkyl halide compound is a mono-halide, a di-halide, a tri-halide, or a tetra-halide.
A lubricant composition that provides improved compatibility with fluoropolymer seals, said lubricant composition comprising:
- a base oil;
- and
- a fluoropolymer seal compatibility additive having a boiling point of from 150 to 450° C. at 1 atmosphere, wherein the fluoropolymer seal compatibility additive comprises
- an alkyl halide compound having a general formula:
- CnH(2n+2−m)Xm (I)
- where n ranges from 2 to 15, 1≤m≤(2n+2), X is iodine;
- wherein the alkyl halide compound is a mono-halide, a di-halide, a tri-halide, or a tetra-halide;
- and
- wherein said fluoropolymer seal compatibility additive is present in an amount ranging from 0.05 to 1 wt. % based on the total weight of said lubricant composition.
A method of lubricating a system comprising a fluoropolymer seal, said method comprising:
- providing a lubricant composition that comprises a base oil and a fluoropolymer seal compatibility additive having a boiling point of from 150 to 450° C. at 1 atmosphere, wherein the fluoropolymer seal compatibility additive comprises
- an alkyl halide compound having a general formula:
- CnH(2n+2−m)Xm (I)
- where n ranges from 2 to 15, 1≤m≤(2n+2), X is iodine;
- wherein the alkyl halide compound is a mono-halide, a di-halide, a tri-halide, or a tetra-halide;
- and
- wherein said fluoropolymer seal compatibility additive is present in an amount ranging from 0.05 to 1 wt. % based on the total weight of said lubricant composition;
- and
- contacting the fluoropolymer seal with the lubricant composition.
Dependencies are inferred from the claim text.