Cleaning composition comprising solvating agent and rinsing agent

A liquid cleaning composition consisting essentially of:

• (a) a non-aqueous solvating agent having a room-temperature vapor pressure of no greater than about 8 mm Hg and a solvating strength of no less than about 20;
• and
• (b) a non-aqueous rinsing agent having a room temperature vapor pressure of about 80 to about 680 mm Hg and an ozone depletion factor of no greater than about 0.05;
• wherein the rinsing agent consists essentially of an ether, wherein the rinsing agent has a higher specific gravity than that of the solvating agent, wherein the ratio of the vapor pressure of said rinsing agent to the vapor pressure of said solvating agent is at least about 200 and such that at the boiling temperature of the composition, the vapor space above the composition comprises a non-combustible vapor phase and consists essentially of said rinsing agent and is substantially free of said solvating agent, the composition boiling at a relatively constant temperature.

A boiling liquid cleaning composition consisting essentially of:

• (A) a non-aqueous solvating agent having a room-temperature vapor pressure of no greater than about 8 mm Hg, a solvating strength of no less than about 10, and selected from the group consisting of a terpene, a dibasic ester, a monobasic ester, a petroleum solvent, an alkyl substituted 2-pyrrolidone, a ketone, an ether, an alcohol, and an amine, and a mixture of two or more of the aforementioned;
• and
• (B) a non-aqueous rinsing agent having a room temperature vapor pressure of about 80 to about 680 mm Hg, an ozone depletion factor of no greater than about 0.05, and selected from the group consisting of a hydrofluorocarbon, a fluorocarbon, an aliphatic hydrocarbon, an aromatic hydrocarbon, a ketone, an ether, and a mixture of two or more of the aforementioned;
• and
• wherein the rinsing agent has a higher specific gravity than that of the solvating agent, wherein the ratio of the vapor pressure of said rinsing agent to the vapor pressure of said solvating agent is at least about 200 and wherein the vapor space above the boiling composition comprises a non-combustible vapor phase and consists essentially of said rinsing agent and is substantially free of said solvating agent, the composition boiling at a relatively constant temperature.