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:
Sep. 04, 1979
Filed:
Apr. 26, 1971
Alexander D Recchuite, Boothwyn, PA (US);
Suntech, Inc., Philadelphia, PA (US);
Abstract
A synthetic sulfurized oil, useful as an additive to lubricants, and especially as a replacement for sulfurized sperm oil, is produced by reaction of sulfur, lard oil and polyisobutylene oligimers containing at least one pair of maximally crowded geminal methyl groups (e.g. 'tetraisobutylene'). Preferably, sufficient sulfur to obtain a final sulfurized product containing in the range of about 5-25 weight percent sulfur is reacted with a mixture comprising about 30-90 parts by weight of lard oil and 70-10 parts of the polyisobutylene. Minor amounts (e.g. up to about 15 weight percent) of other unsaturated hydrocarbons (e.g. 'C.sub.18 olefin') can also be present in the mixture.