Environmentally friendly sugar mill bearing lubricant
AssigneeDylon Industries Inc.
InventorRobert J. Stepan
Life of this patent
Estimating the term…
Abstract
An environmentally safe sugar mill journal bearing lubricant for use in the processing of sugar cane. The sugar mill journal bearing lubricant comprises a major amount of chewing gum base derived from synthetic or natural products to prevent metal to metal contact, and an edible triglyceride oil such as lard or canola oil. Additionally, a minor amount of high molecular weight polybutene, a USDA authorized extreme pressure additive, and/or an polymeric tackifier for increasing film strength and providing boundary lubrication may be included in the lubricant.
Claims25
An environmentally safe journal bearing lubricant suitable for lubricating a sugar mill journal bearing comprising:
- 10 to 92 percent by weight of a synthetic or natural gum or a natural coagulated or concentrated lattice of a vegetable origin which functions as a biodegradable lubricant to prevent bearing to journal contact;
- and
- 2 to 15 percent by weight of a triglyceride oil made from a natural vegetable oil, animal oil for increasing the film strength and boundary lubrication.
An environmentally safe journal bearing lubricant suitable for lubricating a sugar mill journal bearing comprising:
- (a) 10 to 90 percent by weight of a USDA and/or FDA registered synthetic or natural chewing gum which functions as a biodegradable lubricant to prevent bearing to journal contact selected from the group consisting of alpha-pinene, beta-pinene, polyvinyl acetate having a minimum molecular weight 2,000 and mixtures thereof;
- (b) 1 to 10 percent by weight of a USDA registered triglyceride oil made from a natural vegetable oil and/or animal oil for increasing the film strength and boundary lubrication selected from the group consisting of lard oil, soybean oil, canola oil, high euricic acid rapeseed oil, corn oil, sunflower oil, fish oil, epoxidized soybean oil, medium chain fatty acid propylene gylcol esters, castor oil and/or petroleum wax and mixtures thereof;
- (c) 1 to 5 percent by weight of a USDA registered polybutene having an average molecular weight of between 2,300 and 20,000 which functions as an extreme pressure based lubricant;
- (d) 1 to 5 percent by weight of one or more USDA registered lubricant additives for lowering friction under extreme load conditions and retarding oxidation and corrosion;
- and
- (e) 0 to 2 percent by weight of a USDA registered viscosity index improver selected from the group consisting of a high molecular weight polybutene having an average molecular weight of at least 60,000, polyisobutylene, polyethylene, polypropylene, and/or a block polymer comprised of polyethylene and polypropylene and mixtures thereof.
An environmentally safe journal bearing lubricant suitable for lubrication of a sugar mill journal bearing comprising
- (a) 75 to 90 percent by weight of a USDA and/or FDA registered natural or synthetic chewing gum base for enhancing the lubricant's load bearing properties, water resistance and tack;
- (b) 1 to 5 percent by weight of one or more USDA registered polybutenes having an average molecular weight of between 2,300 and 20,000 which functions as an extreme pressure based lubricant;
- (c) 1 to 10 percent by weight of a USDA oil based on paraffin or paraffin-base stock for imparting high temperature hydrodynamic lubrication;
- (d) 1.5 to 3 percent by weight of one or more USDA registered lubricant additives for protecting bearing surfaces from extreme pressure, wear, corrosion and oxidation;
- (e) 0.5 to 1 percent by weight of a USDA registered viscosity index improver;
- and
- (f) 1 to 10 percent by weight of USDA registered triglyceride oil made from natural animal oil and/or vegetable oil and mixtures thereof for increasing film strength and boundary lubrication.
Dependencies are inferred from the claim text.