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US 4,052,323 AGranted
High-temperature lubricant for the hot-working of metals
AssigneeLonza Ltd.
InventorsKurt Feneberger, Rolf Gely
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AssigneeLonza Ltd.
InventorsKurt Feneberger, Rolf Gely
Estimating the term…
The high-temperature lubricant for the hot-working of metals which comprises (a) 10 to 90 percent by weight of graphite, (b) 2 to 45 percent by weight of an alkylene homopolymer or copolymer, and (c) 0.5 to 8 percent by weight of a dispersing agent. The lubricant is solid at room temperature. The high-temperature lubricant is applied in the form of an aqueous solution which includes 5 to 80 percent by weight of the solid high-temperature lubricant. The process of production and use of the high-temperature lubricant. The high-temperature lubricant for the hot-working of metals which comprises (a) 35 to 90 percent by weight of graphite, (b) 2 to 60 percent by weight of an alkylene homopolymer or copolymer, (c) 0.2 to 8 percent by weight of an auxiliary suspension agent, and (d) 2 to 40 percent by weight of a film stabilizer. The lubricant is applied in the form of an aqueous solution which includes 5 to 80 percent by weight of solid lubricant. The lubricant is used at temperatures of around 900.degree. C. or higher.
The high-temperature lubricant for the hot-working of metals which comprises (a) 10 to 90 percent by weight of graphite, (b) 2 to 45 percent by weight of an homopolymer or copolymer selected from the group consisting of polyethylene, poly(methyl methacrylate), polystyrene, poly(vinyl acetate), poly(vinyl laurate), poly(vinyl propionate), a copolymer of methyl methacrylate and styrene, a copolymer of methyl methacrylate and alpha-methyl-styrene, polyisobutylene, poly(dibutyl maleinate), poly(diallylphthalate), polypropylene, poly(methyl acrylate), a copolymer of vinyl acetate and ethylene, polyisobutylene and mixtures thereof, and (c) 0.5 to 8 percent by weight of a dispersing agent which is selected from the group consisting of a polysaccharide, an alkyl cellulose and an alginate, said lubricant being solid at room temperature.
The high-temperature lubricant for the hot-working of metals which comprises (a) 35 to 90 percent by weight of grahite, (b) 2 to 60 percent by weight of an homopolymer or copolymer selected from the group consisting of polyethylene, poly(methyl methacrylate), polystyrene, poly(vinyl acetate), poly(vinyl laurate), poly(vinyl propionate), copolymers of methyl methacrylate and styrene, a copolymer of methyl methacrylate and alpha-methyl-styrene, polyisobutylene, poly(dibutyl maleinate), poly(diallyl phthalate), polypropylene, poly(methyl acrylate), a copolymer of vinyl acetate and ethylene polyisobutylene, and mixtures thereof, (c) 0.2 to 8 percent by weight of an auxiliary suspension agent selected from the group consisting of a polysaccharide, an alkyl cellulose, an alginate and combinations thereof, and (d) 2 to 4 percent by weight of a film stabilizer selected from the group consisting of boron oxide, a sodium silicate, a silicic acid, a metal phosphate and a combination of one or more of said film stabilizers, said lubricant being solid at room temperature.
Dependencies are inferred from the claim text.