Title: Methods for preparing group II Metal overbased sulfurized alkylphenols
Application Number: 87106930 Application Date: 1987.10.21
Publication Number: 1018918 Publication Date: 1988.06.15
Approval Pub. Date: 1993.05.12 Granted Pub. Date: 1993.05.12
International Classifi-cation: C07C319/14;C07C321/20;C10M135/20
Applicant(s) Name: Chevron Research Co. Address:
Inventor(s) Name: Thomas V. Liston
Attorney & Agent: DAI ZHENXIU
Abstract:
    The present invention is directed toward a method for preparing Group II metal overbased sulfurized alkylphenols. In particular, the present invention employs a sulfurization catalyst in the preparation of Group II metal overbased sulfurized alkylphenols. Use of a sulfurization catalyst in this preparation results in a product generally characterized as having lower crude sediment, a higher Total Base Number and lower viscosity than a similar product prepared without using a sulfurization catalyst.
Time: 8
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