The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 1992
Filed:
Jan. 06, 1992
David A Drake, Houston, TX (US);
Thomas F Wulfers, Seabrook, TX (US);
Lyondell Petrochemical Company, Houston, TX (US);
Abstract
The present invention provides an environmentally friendly grease composition. The base components of this lubricating composition include a white mineral oil in the amount of about 65 to about 85% by weight based on total weight of the composition, an extreme pressure additive comprising a solid friction modifier in an amount of about 1 to about 20 wt %, a thickener and a minor amount of one or more oil dispersible additives in amounts sufficient to enhance the performance characteristics of the greases. Each of the extreme pressure additive, thickener, and the one or more oil dispersible additives is essentially free of heavy metals, particularly arsenic, antimony, barium, cadmium, chromium, copper, iron, lead, mercury, molybdenum, nickel, selenium, vanadium and zinc. The greases of the present invention meet or exceed the EPA acceptance standards in effect during 1991 which are defined by the static sheen test and the 96-hour Mysidopsis bahia (shrimp) tests for offshore and inland water use.