公开(公告)号：MX9305120A

公开(公告)日：1994-03-31

申请号：MX9305120

申请日：1993-08-24

Applicant: LUBRIZOL CORP

Inventor： ROSKI JAMES PERTER ,  CAHOON JOHN MELVIN ,  KARN JACK LEE ,  HUANG NAI ZHONG

IPC: C09K15/10 ,  C10L1/24 ,  C10L1/26 ,  C10L1/30 ,  C10L10/08 ,  C10M141/04 ,  C10M141/08 ,  C10M159/20 ,  C10M167/00 ,  C10M169/00 ,  C10M173/00 ,  C10N10/02 ,  C10N10/04 ,  C10N30/06 ,  C10N30/08 ,  C10N30/10 ,  C10N40/04 ,  C10N40/22 ,  C10N50/10 ,  C10N60/10 ,  C10N70/00 ,  F02B75/02 ,  C10M107/46

Abstract: This invention relates to a composition comprising at least one sulfurized overbased product made by contacting (A) at least one overbased product or (A') at least one boron-containing overbased product with (B) sulfur and/or at least one source of sulfur; said overbased product (A) or boron-containing overbased product (A') being made using at least one acidic material, with the proviso that when said acidic material is other than SO2 or a source of SO2 said overbased product (A) or boron-containing overbased product (A') is contacted with an effective amount of SO2 or a source of SO2 to displace at least part of said acidic material. In one embodiment the sulfurized overbased product is an overbased thiosulfate or a boron-containing overbased thiosulfate. In one embodiment, the sulfurized overbased product is made using the overbased product (A) and the composition further comprises at least one non-sulfurized boron-containing overbased product. The sulfurized overbased products are thermally stable and are useful as extreme pressure (EP) and/or anti-wear agents or antioxidants for use in lubricants, functional fluids and normally liquid fuels. The functional fluids can be oil-based, water-oil emulsions or water-based. The sulfurized overbased products are particularly suitable for use as EP and/or anti-wear agents for use in gear lubricants and cutting fluids. In one embodiment lubricating compositions are provided that pass both the L-37 High Torque Test and the L-42 High Speed Shock Test without the necessity of employing phosphorus and sulfurized olefin anti-wear systems in their formulation.