Biodegradable lubricants
AssigneeAnderol, Inc.
InventorsJohn M. Kurosky, Zulfiqar Ahmed Tahir
Life of this patent
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Abstract
Lubricant compositions based on a biodegradable base oil, such as a polyol ester or polyalkylene glycol, a calcium sulfonate based thickener and a naturally occurring phospholipid as an anti-wear additive, such as lecithin for environmentally sensitive applications and when having a specific gravity greater than 1.0 at 60° F. (15.6° C.) for marine applications are provided. The thickener may include a linear alkybenzene sulfonic acid, acetic acid and 12 hydroxystearic acid and a calcium carbonate solid film lubricant. The lubricant submerges when dispensed on water avoiding formations of a surface sheen and biodegrades when submerged resulting in a water ecology friendly lubricant.
Claims13
A lubricant composition, comprising:
- (a) at least about 55 weight percent biodegradable base oil selected from the group consisting of:
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 7.5 to 20 weight percent of an overbased calcium sulfonate thickener system;
- and
- (c) between about 5 to 10 weight percent of a phospholipid anti-wear agent;
- wherein the lubricant composition has a specific gravity of at least 1.0 at 60° F. (15.6° C.).
A lubricant composition, comprising:
- (a) at least about 55 weight percent biodegradable base oil that selected from the group consisting of, and
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 10 to 35 weight percent overbased calcium sulfonate thickener;
- (c) between about 3 to 5 weight percent 12 hydroxystearic acid;
- (d) between about 1.5 to 3.0 weight percent calcium carbonate;
- and
- (e) between about 5 to 10 weight percent of a phospholipid anti-wear agent;
- wherein the lubricant composition has a specific gravity at least above 1.0 at 60° F. (15.6° C.).
A method of lubricating in a marine application comprising using a lubricant composition having a specific gravity at least above 1.0 at 60° F. (15.6° C.), wherein the lubricant composition includes:
- (a) at least about 55 weight percent biodegradable base oil selected from the group consisting of
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 10 to 35 weight percent of an overbased calcium sulfonate thickener;
- and
- (c) between about 2.5 to 5 weight percent 12 hydroxystearic acid;
- (d) between about 1.5 to 3.0 weight percent calcium carbonate;
- and
- (e) between about 5 to 10 weight percent of a phospholipid anti-wear agent.
A method of lubricating in a marine application, comprising using a lubricant composition including the following:
- (a) at least about 65 weight percent biodegradable base oil selected from the group consisting of and and at least one of
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 10 to 20 weight percent of an overbased calcium sulfonate thickener;
- and
- (c) between about 3 to 5 weight percent 12 hydroxystearic acid;
- (d) between about 1.5 to 3.0 weight percent calcium carbonate;
- and
- (e) between about 6 to 8 weight percent of a phospholipid anti-wear agent;
- wherein the lubricant composition has a specific graviy of at least 1.0 at 60° F. (15.6° C.).
A lubricant composition, comprising:
- (a) at least about 45 weight percent biodegradable base oil selected from the group consisting of
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 10 to 35 weight percent overbased calcium sulfonate thickener;
- (c) between about 2.5 to 5 weight percent 12 hydroxystearic acid;
- (d) between about 3 to 5 weight percent calcium carbonate;
- and
- (e) between about 5 to 10 weight percent of a phospholipid anti-wear agent;
- wherein the lubricant composition has a specific gravity at least above 1.0 at 60° F. (15.60° C.).
A lubricant composition, comprising:
- (a) at least 55 weight percent biodegradable base oil selected from the group consisting of
- i) the reaction product of at least one neopentyl polyol and valeric acid
- ii) the reaction product of at least one neopentyl polyol and a mixture of heptanoic acid and caprylic-capric acid;
- and
- iii) the reaction product of at least one neopentyl polyol, valeric acid and a mixture of heptanoic acid and caprylic-capric acid;
- (b) between about 7.5 to 20 weight percent of an overbased calcium sulfonate thickener system;
- and
- (c) between about 5 to 10 weight percent of a phospholipid anti-wear agent;
- wherein the lubricant composition has a specific gravity of at least 1.0 at 60° F. (15.60° C.);
- and
- wherein the lubricant composition has a cone penetration measured at 25° C. in the range of 400-430.
Dependencies are inferred from the claim text.