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:
Jun. 05, 1979
Filed:
Sep. 30, 1977
Donovan R Wilgus, Richmond, CA (US);
John M King, San Rafael, CA (US);
Chevron Research Company, San Francisco, CA (US);
Abstract
New Mannich bases and the alkaline earth metal salts thereof are prepared by condensing formaldehyde and a polyamine with a sulfur-containing phenolic mixture consisting of (1) from 5 to 35 mol percent of a sulfurized alkylphenol of the formula ##STR1## wherein R is C.sub.8 -C.sub.36 alkyl, n is an integer from 1 to 8, and y is an integer from 1 to 9, and (2) from 95 to 65 mol percent of phenol alkylated with a propylene tetramer. They are useful as highly alkaline additives for lubricating oils, particularly for use in marine cylinder, railroad, and automotive diesel lubricating oils.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile