초록 ▼

Reaction products of boric acid or boron trioxide with an epoxide having at least 8 carbon atoms (especially a straight-chain aliphatic epoxide) are useful anti-wear, friction modifying and rust inhibiting additives for lubricants. They are particularly useful in lubricants containing relatively lar

Reaction products of boric acid or boron trioxide with an epoxide having at least 8 carbon atoms (especially a straight-chain aliphatic epoxide) are useful anti-wear, friction modifying and rust inhibiting additives for lubricants. They are particularly useful in lubricants containing relatively large amounts of basic alkaline earth metal phenates or salicylates and/or free hydroxy group-containing alkenylsuccinic acid ester dispersants.

대표청구항 ▼

A method for preparing an oil-soluble boron-containing composition of matter which comprises reacting, at a temperature from about 80°C. to about 250°C. (A) at least one of boric acid or boron trioxide with (B) at least one epoxide having the formula [Figure] wherein each of R1, R2, R3 and R4 is hyd

A method for preparing an oil-soluble boron-containing composition of matter which comprises reacting, at a temperature from about 80°C. to about 250°C. (A) at least one of boric acid or boron trioxide with (B) at least one epoxide having the formula [Figure] wherein each of R1, R2, R3 and R4 is hydrogen or an aliphatic radical, or any two thereof together with the epoxy carbon atom or atoms to which they are attached, form a cyclic radical, said epoxide containing at least 8 carbon atoms, wherein the molar ratio of reagents A and B is between about 1:0.25 and about 1:4, in the presence of a minor amount of a heel of a previously obtained oil-soluble boron-containing composition prepared by reagents A and B in a molar ratio of between about 1:0.25 and about 1:4.