PLASTIC LUBRICANT Russian patent published in 1997 - IPC

FIELD: chemical industry. SUBSTANCE: plastic lubricant comprises polyurea thickening agent and dispersive medium. The dispersive medium is essentially mixture of polyalkyl methacrylate with nitrogen containing block copolymer of ethylene and propylene oxides and naphthalene alkyl derivative and further comprises zinc dialkyl dithiophosphate, the ratio of components is as follows, wt.-%: polyurea thickening agent, 15-25; zinc dialkyl dithiophosphate, 2-4; polyalkyl methacrylate, 5-10; ethylene and propylene oxides, 10-16; and naphthalene alkyl derivative, the balance. EFFECT: improved properties. 2 tbl