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:
Apr. 11, 2017
Filed:
Feb. 06, 2013
The Lubrizol Corporation, Wickliffe, OH (US);
Gary M. Walker, Allestree, GB;
Roger L. Sowerby, Concord Township, OH (US);
James P. Roski, Willowick, OH (US);
Roger L. Parsons, Chagrin Falls, OH (US);
Christopher L. Friend, Nottingham, GB;
Andre Grange, Cleveland, OH (US);
Christopher J. Ciolli, Perry, OH (US);
Mohamed G. Fahmy, Eastlake, OH (US);
Jayasooriya Sujith Perera, Twinsburg, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
A sulfurized alkaline earth metal (e.g., calcium) dodecylphenate is prepared by reacting (i) dodecylphenol with (ii) calcium hydroxide or calcium oxide in an amount of about 0.3 to about 0.7 moles per mole of dodecylphenol charged and (iii) an alkylene glycol in an amount of about 0.13 to about 0.6 moles per mole of dodecylphenol charged; and reacting the product of the first step with sulfur in an amount of about 1.6 to about 3 moles per mole of dodecylphenol charged; and thereafter optionally reacting the product with additional calcium hydroxide or calcium oxide and with carbon dioxide so as to form an overbased phenate. The product thus prepared has reduced levels of monomeric dodecylphenol.