Abstract: An extreme pressure additive composition for use in grease contains alkaline earth metal derivatives of 2,5-dimercapto-1,3,4-thiadiazole (DMTD) complexed to alkylene glycol fluids and or PAG fluids. In addition, additives for extreme pressure and antiwear contain a complex of alkali and/or alkaline earth metal derivatives of DMTD with alkylene glycol fluids and or PAG fluids, in combination with an organophosphorus compound.

Abstract: Compositions comprising silicone fluids are formulated to provide improved metal-to-metal lubrication. Such Lubricating compositions comprise a major amount of (1) one or more siloxane polymer (“silicone fluids”) selected from dimethyl siloxane polymers (also known as dimethyl silicone) and/or phenylmethyl dimethyl siloxane copolymers (also known as phenyl silicone), and lesser amounts of (2) synthetic and/or bio-based ester co-fluid, and (3) an alkoxylated aliphatic polyamine derivative. Unexpectedly, the compositions show a significant improvement in metal-to-metal lubrication, performing better than either the silicone fluids alone or and a combination of silicone with-ester and or silicone with-alkoxylated aliphatic polyamine combinations.

Abstract: An extreme pressure additive composition for use in grease contains alkaline earth metal derivatives of 2,5-dimercapto-1,3,4-thiadiazole (DMTD) complexed to alkylene glycol fluids and or PAG fluids. In addition, additives for extreme pressure and antiwear contain a complex of alkali and/or alkaline earth metal derivatives of DMTD with alkylene glycol fluids and or PAG fluids, in combination with an organophosphorus compound.

Abstract: The invention relates to an extreme pressure additive composition with excellent corrosion resistance properties for use in grease, as well as a lubricating grease composition containing the additive. The additive composition is based on (a) approximately equal amounts by mass of antimony diamyldithiocarbamate and zinc diamyldithiocarbamate, and (b) thiadiazole dimer poly(ether)glycol complex; at (a):(b) mass ratio of about 1.6:1 to about 9.6:1.

Abstract: Compositions comprising silicone fluids are formulated to provide improved metal-to-metal lubrication. Such Lubricating compositions comprise a major amount of (1) one or more siloxane polymer (“silicone fluids”) selected from dimethyl siloxane polymers (also known as dimethyl silicone) and/or phenylmethyl dimethyl siloxane copolymers (also known as phenyl silicone), and lesser amounts of (2) synthetic and/or bio-based ester co-fluid, and (3) an alkoxylated aliphatic polyamine derivative. Unexpectedly, the compositions show a significant improvement in metal-to-metal lubrication, performing better than either the silicone fluids alone or and a combination of silicone with-ester and or silicone with-alkoxylated aliphatic polyamine combinations.

Abstract: The invention relates to an extreme pressure additive composition with excellent corrosion resistance properties for use in grease, as well as a lubricating grease composition containing the additive. The additive composition is based on (a) approximately equal amounts by mass of antimony diamyldithiocarbamate and zinc diamyldithiocarbamate, and (b) thiadiazole dimer poly(ether)glycol complex; at (a):(b) mass ratio of about 1.6:1 to about 9.6:1.

Abstract: The present invention relates to oligomeric or polymer dithiophosphate di- or poly-sulfides and their utility in rubbers. Another aspect of the invention is a method for making oligomeric or polymeric dithiophosphates by reacting phosphorous pentasulfide with a di- or polyol and a mono alcohol to produce a dithiophosphoric acid, and then oxidizing the dithiophosphoric acid with an oxidizing agent to produce an oligomeric or polymeric dithiophosphate.

Abstract: Antimony dithiocarbamate is known to provide extreme pressure (EP) protection in lubricating compositions, such as grease. However, there is a desire to reduce the amount of antimony used in such compositions, while still maintaining acceptable EP performance. It has now been found by using small amounts of either ammonium dithiocarbamate or zinc dithiocarbamate in combination with the antimony dithiocarbamate (SbDTC), a lower amount of SbDTC can be used in the lubricating composition while still maintaining excellent or exceptional EP protection. To counteract the corrosive effects of the SbDTC and ammonium dithiocarbamate composition, it has been found that compounds containing a carboxylic acid group are effective in avoiding copper corrosion.

Abstract: A processes for preparing highly sulfurized molybdenum oxysulfide dithiocarbamates (Mo DTCs) by reacting: [A] a tertiary amine, [B] a hexavalent molybdenum compound, [C] carbon disulfide, [D] water, and [E] a secondary amine are disclosed. The Mo DTCs can be efficiently produced with high sulfur contents and in high yields with low corrosive action and excellent friction properties. The produced Mo DTCs can be used in either grease or lubricating oils as friction modifiers, antiwear agents, extreme pressure agents and antioxidants.

Abstract: The present invention relates to oligomeric or polymer dithiophosphate di- or poly-sulfides and their utility in rubbers. Another aspect of the invention is a method for making oligomeric or polymeric dithiophosphates by reacting phosphorous pentasulfide with a di- or polyol and a mono alcohol to produce a dithiophosphoric acid, and then oxidizing the dithiophosphoric acid with an oxidizing agent to produce an oligomeric or polymeric dithiophosphate.

Abstract: The present invention relates to 1,3,4-thiadiazole reaction products useful as accelerators and/or curing agents for halogenated polymers in rubber vulcanization processes, and to halogenated polymer compositions containing the thiadiazole derivatives, as well as a method of preparing the same. The additive is the reaction product of a 1,3,4-thiadiazole compound and a dithiocarbamic acid or an amine, or an isomer thereof.

Abstract: The present invention relates to 1,3,4-thiadiazole reaction products useful as accelerators and/or curing agents for halogenated polymers in rubber vulcanization processes, and to halogenated polymer compositions containing the thiadiazole derivatives, as well as a method of preparing the same.

Abstract: 2,5-dimercapto-1,3,4-thiadiazole dimer-poly(ether)glycol reaction products and adducts useful as extreme pressure additives. Lubricating compositions (e.g., greases) containing reaction products and adducts exhibit improved Timken Load properties.

Abstract: Thiadiazole-poly(ether)glycol reaction products and adducts useful as extreme pressure additives. Lubricating compositions (e.g., greases) containing the reaction products and adducts exhibit improved Timken Load properties.

Abstract: 2,5-dimercapto-1,3,4-thiadiazole dimer-poly(ether)glycol reaction products and adducts useful as extreme pressure additives. Lubricating compositions (e.g., greases) containing reaction products and adducts exhibit improved Timken Load properties.

Abstract: 2,5-dimercapto-1,3,4-thiadiazole dimer-poly(ether)glycol reaction products and adducts useful as extreme pressure additives. Lubricating compositions (e.g., greases) containing reaction products and adducts exhibit improved Timken Load properties.

Abstract: Disclosed are novel compounds prepared by reacting two moles of 2,5-dimercapto-1,3,4-thiadiazole and one mole of a hydrocarbon compound selected from terpenes, aryl compounds and aliphatic compounds which may be substituted by oxygen or oxygen containing groups. The hydrocarbon compound forms a bivalent radical linking together the two 2,5-dimercapto-1,3,4-thiadiazoles. The compounds are effective extreme pressure agents when incorporated into lubricating compositions.

Abstract: The present invention provides an improved curing system for chlorinated polymers using as a curing agent alkyl ether and alkyl thioether derivatives of 2,5-dimercapto)-i,3,4-thiadiazole and of its climer.