1. A trunk piston engine lubricating oil composition comprising (a) a major amount of a base stock containing at least 90% by weight saturated hydrocarbons; and (b) a base stock selected from the group consisting of (i) an ester base stock wherein the ester base stock is present in an amount greater than 10% by weight and no greater than about 45% by weight, based on the total weight of the lubricating oil composition, (ii) an alkylated aromatic base stock, (iii) a base stock having an aromatic content of at least about 50% by weight wherein the base stock having an aromatic content of at least about 50% by weight is not an aromatic extract, and mixtures thereof;
wherein the base stock (b) is a base stock having an aromatic content of at least about 50% by weight and is a medium cycle oil from a fluid catalytic cracking unit.
2. The trunk piston engine lubricating oil composition of claim 1, wherein the base stock comprising at least 90% by weight saturated hydrocarbons comprises at least one of a Group II base stock, a Group III base stock or a base stock derived from a Fischer-Tropsch synthesized, waxy, paraffinic hydrocarbon material.
3. The trunk piston engine lubricating oil composition of claim 1, wherein the base stock comprising at least 90% by weight saturated hydrocarbons comprises at least one Group II base stock.
4. The trunk piston engine lubricating oil composition of claim 1, which is substantially free of a Group I base stock.
5. The trunk piston engine lubricating oil composition of claim 1, further comprising one or more trunk piston engine lubricating oil composition additives selected from the group consisting of an antioxidant, anti-wear agent, detergent, rust inhibitor, dehazing agent, demulsifying agent, metal deactivating agent, friction modifier, pour point depressant, antifoaming agent, co-solvent, package compatibiliser, corrosion-inhibitor, ashless dispersant, dye, extreme pressure agent and mixtures thereof.
6. A method for improving heavy fuel oil compatibility of a trunk piston engine lubricating oil composition comprising a major amount of a base stock containing at least 90% by weight saturated hydrocarbons, the method comprising adding to the trunk piston engine oil composition a base stock having an aromatic content of at least about 50% by weight and which is a medium cycle oil from a fluid catalytic cracking unit.
7. The method of claim 6, wherein the base stock comprising at least 90% by weight saturated hydrocarbons comprises at least one of a Group II base stock, a Group III base stock or a base stock derived from a Fischer-Tropsch synthesized, waxy, paraffinic hydrocarbon material.
8. The method of claim 6, wherein the base stock comprising at least 90% by weight saturated hydrocarbons comprises at least one Group II base stock.
9. A method for operating a trunk piston engine, the method comprising lubricating the trunk piston engine with a trunk piston engine lubricating oil comprising (a) a major amount of a base stock containing at least 90% by weight saturated hydrocarbons; and (b) a base stock having an aromatic content of at least about 50% by weight and which is a medium cycle oil from a fluid catalytic cracking unit.
10. A method for operating a trunk piston engine, the method comprising lubricating the trunk piston engine with a trunk piston engine lubricating oil composition comprising (a) a major amount of a base stock containing at least 90% by weight saturated hydrocarbons; and (b) a base stock selected from the group consisting of (i) an ester base stock wherein the ester base stock is present in an amount greater than 10% by weight and no greater than about 45% by weight, based on the total weight of the lubricating oil composition, (ii) an alkylated aromatic base stock, (iii) a base stock having an aromatic content of at least about 50% by weight wherein the base stock having an aromatic content of at least about 50% by weight is not an aromatic extract, and mixtures thereof;
wherein the base stock (b) is a base stock having an aromatic content of at least about 50% by weight and is a medium cycle oil from a fluid catalytic cracking unit.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A boronate linked porous network comprising:
a boronate comprising the reaction product of a polyboronic acid or an acyclic boronate ester thereof with a polydiol, a polyamino alcohol or a polydiamine to form a covalently bonded polymeric or oligomeric porous network, the boronate linked network having a pore size of less than about 200 angstroms.
2. The boronate linked porous network as defined in claim 1, wherein the boronate is formed from the reaction product of a polydiol with a triboronic acid or an acyclic boronate ester thereof.
3. A process for forming a boroxine linked porous network comprising:
a dehydration product formed by reacting a polyboronic acid with itself to form an anhydride porous network, the porous network defining pores having a pore diameter of less than about 200 angstroms.
4. The process as defined in claim 3, wherein the polyboronic acid comprises a triboronic acid.
5. The process as defined in claim 3, wherein the boroxine has the following structure:
6. A boronate linked porous network comprising:
a boronate comprising the reaction product of a polyboronic acid or an acyclic boronate ester thereof with a polydiol to form a covalently bonded polymeric or oligomeric porous network, the boronate linked network having a pore size of less than about 200 angstroms.
7. The boronate linked porous network as defined in claim 6, wherein the boronate is formed from the reaction product of a polydiol with a triboronic acid or an acyclic boronate ester thereof.
8. The boronate linked porous network as defined in claim 7, wherein the boronate ester has the following structure:
9. The boronate linked porous network as defined in claim 7, wherein the boronate ester has a pore size of less than about 20 angstroms.