Hydrogen sulfide stabilized oil-soluble sulfurized organic compositions

• US 4,690,767 A
• Filed: 08/11/1986
• Issued: 09/01/1987
• Est. Priority Date: 03/15/1985
• Status: Expired due to Term

• Current Assignee: The Lubrizol Corporation (Berkshire Hathaway Incorporated)
• Original Assignee: The Lubrizol Corporation (Berkshire Hathaway Incorporated)
• Inventors: DiBiase, Stephen A., Vinci, James N.
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US06/879,243
• Time in Patent Office: 386 Days
• Field of Search: 252/47, 252/47.5, 252/50, 252/48.2, 252/48.6, 72/42
• US Class Current: 508/334
• CPC Class Codes: C10M 141/08 at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
• CPC Class Codes: C10M 2207/121 having hydrocarbon chains of seven or less carbon atoms
• CPC Class Codes: C10M 2207/122 monocarboxylic
• CPC Class Codes: C10M 2207/123 polycarboxylic
• CPC Class Codes: C10M 2207/125 having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
• CPC Class Codes: C10M 2207/127 polycarboxylic
• CPC Class Codes: C10M 2207/129 having hydrocarbon chains of thirty or more carbon atoms
• CPC Class Codes: C10M 2207/22 Acids obtained from polymerised unsaturated acids
• CPC Class Codes: C10M 2207/287 Partial esters
• CPC Class Codes: C10M 2207/288 containing free carboxyl groups
• CPC Class Codes: C10M 2207/289 containing free hydroxy groups
• CPC Class Codes: C10M 2207/34 Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
• CPC Class Codes: C10M 2215/04 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: C10M 2219/02 Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
• CPC Class Codes: C10M 2219/022 of hydrocarbons, e.g. olefines
• CPC Class Codes: C10M 2219/024 of esters, e.g. fats
• CPC Class Codes: C10M 2219/085 containing carboxyl groups; Derivatives thereof
• CPC Class Codes: C10N 2040/06 Instruments or other precision apparatus, e.g. damping fluids
• CPC Class Codes: C10N 2040/08 Hydraulic fluids, e.g. brake-fluids
• CPC Class Codes: C10N 2040/20 : Metal working
• CPC Class Codes: C10N 2040/22 : with essential removal of material , e.g. cutting, grinding or drilling
• CPC Class Codes: C10N 2040/24 : without essential removal of material , e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
• CPC Class Codes: C10N 2040/241 : Manufacturing joint-less pipes
• CPC Class Codes: C10N 2040/242 : Hot working
• CPC Class Codes: C10N 2040/243 : Cold working
• CPC Class Codes: C10N 2040/244 : of specific metals
• CPC Class Codes: C10N 2040/245 : Soft metals, e.g. aluminum
• CPC Class Codes: C10N 2040/246 : Iron or steel
• CPC Class Codes: C10N 2040/247 : Stainless steel
• CPC Class Codes: C10N 2070/02 : Concentrating of additives

Abstract

The hydrogen sulfide emission of oil-soluble sulfurized organic compounds is reduced by utilizing a hindered amine and optionally a carboxylic acid or acid anhydride in effective amounts.

Claims

1. A metal working fluid, comprising:

a major amount of an oil of lubrication viscosity;

an oil-soluble sulfurized organic compound present in an amount of about 0.1% to about 10% by weight based on the weight of the fluid;

an oil-soluble hindered organic amine structured so as to provide stearic hinderance, said hindered organic amine being selected from the group consisting of primary amines and secondary amines wherein the hindered amine is present in an amount of from about 0.25% to about 2% by weight based on the weight of the sulfurized organic compound.

3. The fluid as claimed in claim 1 wherein said hindered amine is a monoamine having the formula:

##STR4## wherein said R'"'"', R" and R'"'"'" can be the same or different, wherein said R'"'"', R" and R'"'"'" is a hydrocarbyl or hydrogen but collectively have a total from 2 to about 30 carbon atoms and provide the amine with stearic hindrance wherein said R² is a hydrocarbyl or hydrogen.

4. The fluid as claimed in claim 3 wherein said R'"'"', R" and R'"'"'" hydrocarbyl group is an alkyl group and wherein R² is an alkyl group.

5. The fluid as claimed in claim 3 wherein said R'"'"', R" and R'"'"'" is an alkyl group collectively having a total of from about 12 to about 14 carbon atoms, and wherein said R² is hydrogen.

6. The fluid as claimed in claim 3 wherein said hindered amine is a hydrocarbyl amine having from 3 to about 100 carbon atoms.

7. The fluid as claimed in claim 3 wherein the hindered organic amine has a solubility in the range of from about 0.01 to 10,000 parts by weight per 100 parts by weight of the oil-soluble sulfurized organic compound.

8. The fluid as claimed in claim 7 wherein the hindered organic amine is soluble in an amount of about 5.0 to 10,000 parts by weight per 100 parts by weight of the oil-soluble sulfurized organic compound.

2. A method of suppressing the generation of hydrogen sulfide from a metal working fluid comprised of a major amount of an oil of lubricating viscosity and from about 0.1% to about 10% by weight of an oil-soluble sulfurized organic compound, comprising:

adding to the metal working fluid an oil-soluble hindered organic amine structured so as to provide stearic hinderance, said hindered organic amine being selected from the group consisting of primary amines and secondary amines, the amine being added in an amount of from about 0.25% to about 2% by weight based on the weight of the sulfurized organic compound.