Homogeneous additive concentrates and their formation
AssigneeEthyl Petroleum Additives, Inc.
InventorsAndrew G. Papay, Joseph P. O'Brien
Life of this patent
Estimating the term…
Abstract
A homogeneous concentrate suitable for use as an additive for lubricating oils is formed from a long chain succinimide and a benzotriazole by heating a mixture of these materials in the presence of water or alkoxylated amines or dihydrocarbylphosphites or dihydrocarbyl phosphonates (or mixtures of such materials) and then distilling the volatile component, from the resulting product. When this heating step is conducted in the additional presence of a boronating agent such as boric acid and the volatile component, is removed by distillation, not only is a compatible additive concentrate formed, but the long chain succinimide is boronated in the process.
Claims39
A process of forming a homogeneous product from a long chain succinimide in which the chain has a number average molecular weight in the range of 700 to 2,500 and a benzotriazole which at a temperature of 25.degree. C. is normally incompatible therewith, which process comprises (a) heating at a temperature in the range of 50.degree. to about 150.degree. C. and for a time sufficient to achieve homogeneity, a mixture of from about 10 to about 1,000 parts by weight of the succinimide per part by weight of the benzotriazole, optionally with (i) water or (ii) an N,N-bis(hydroxyalkyl)-N-hydrocarbylamine or (iii) a dihydrocarbyl phosphite, or (iv) a dihydrocarbyl phosphonate, or any mixture of any two or any three or all four of (i), (ii), (iii) and (iv);
- and (b) distilling off excess water, if any.
A process of forming a homogeneous boronated product from a long chain succinimide in which the chain has a number average molecular weight in the range of 700 to 2,500 and a benzotriazole which at a temperature of 25.degree. C. is normally incompatible therewith, which process comprises (a) heating at a temperature in the range of about 50.degree. to about 150.degree. C. and for a time sufficient to achieve boronation and homogeneity, a mixture of the succinimide, the benzotriazole, and a boronating agent in proportions in parts by weight of 0.1 to 10 parts succinimide, 0.01 to 0.1 parts benzotriazole and 0.01 to 0.3 parts boronating agent, and optionally with (i) water or (ii) an N,N-bis-(hydroxyalkyl)-N-hydrocarbylamine or (iii) a dihydrocarbonyl phosphite, or (iv) a dihydrocarbyl phosphonate, or any mixture of any two or any three or all four of (i), (ii), (iii) and (iv);
- and (b) distilling off excess water, if any.
A process of forming a homogeneous boronated product from a long chain succinimide in which the chain has a number average molecular weight in the range of 700 to 2,500 and a benzotriazole which at a temperature of 25.degree. C. is normally incompatible therewith, which process comprises (a) heating at a temperature in the range of about 50.degree. to about 150.degree. C. and for a time sufficient to achieve boronation and homogeneity, a mixture of the succinimide, the benzotriazole, a boronating agent, and water or an N,N-bis(hydroxyalkyl)-N-hydrocarbylamine or both in proportions in parts by weight of 0.1 to 10 parts succinimide, 0.01 to 0.1 part benzotriazole, 0.01 to 0.3 part boronating agent, and 0.01 to 0.1 part water or 0.01 to 1 part N,N-bis(hydroxyalkyl)-N-hydrocarbyl amine or both, optionally with (i) a dihydrocarbyl phosphite, or (ii) a dihydrocarbyl phosphonate, or any mixture of (i) and (ii);
- and (b) distilling off excess water.
Dependencies are inferred from the claim text.