Cleaning compositions

A method for cleaning and dewatering an object comprising the steps of:

• (a) a cleaning step comprising dewatering and cleaning an object to be cleaned containing water on its surface in a cleaning vessel containing a dewatering polyorganosiloxane cleaning agent, and
• (b) a rinsing step comprising rinsing and cleaning said object after the dewatering and cleaning by use of a plurality of rinsing cleaning vessels in sequence, each of the rinsing cleaning vessels containing a polyorganosiloxane rinsing cleaning agent, the rinsing cleaning vessels being connected with each other such that said rinsing cleaning agent is transmitted in sequence in the direction opposite to that in which the object is transmitted,
• wherein said rinsing step is conducted while a rinsing cleaning waste liquid is recovered from the most downstream rinsing cleaning vessel of said plurality of rinsing cleaning vessels,
• wherein the recovered rinsing cleaning waste liquid is distilled to recover polyorganosiloxanes, and
• wherein the recovered polyorganosiloxanes are re-supplied to the one or more of the rinsing cleaning vessel, and
• (c) drying said part to completely remove said rinsing agent from the part.

A method for cleaning and removing water from metal parts, glass parts, ceramic parts, or plastic parts having a hard surface,

• comprising the step of removing water from a part which contains water on its surface by treatment with a cleaning composition consisting essentially of one or more of a surfactant or hydrophilic solvent and at least one polyorganosiloxane not-compatible with water selected from the group consisting of a straight chain polyorganosiloxane represented by the formula:
• ##STR13## wherein 1 is an integer from 0 to 5, and a cyclic polyorganosiloxane represented by the formula:
• ##STR14## wherein R.sup.1 in each of the above formulas is independently selected from the group consisting of methyl, ethyl, propyl, butyl, phenyl, trifluoro-methyl, amino, amide, acrylic acid ester and mercaptan;
• 1 is an integer from 0 to 5;
• and m is an integer from 3 to 7, wherein the cleaning composition is substantially free of water, and completely drying the part to remove the cleaning composition.

A continuous method for cleaning and removing water from an object comprising the steps of:

• (a) cleaning the object and removing water from the object by use of a cleaning composition consisting essentially of at least one polyorganosiloxane not-compatible with water selected from the group consisting of a straight chain polyorganosiloxane represented by the formula:
• ##STR15## wherein 1 is an integer from 0 to 5, and a cyclic polyorganosiloxane represented by the formula:
• ##STR16## wherein R.sup.1 in each of the above formulas is independently selected from the group consisting of methyl, ethyl, propyl, butyl, phenyl, trifluoro-methyl, amino, amide, acrylic acid ester and mercaptan;
• 1 is an integer from 0 to 5;
• and m is an integer from 3 to 7, wherein the cleaning composition is substantially free of water, and
• (b) recovering the polyorganosiloxane of the cleaning composition and recycling it back into the method, and completely drying the part to remove the cleaning composition.

A method for removing water from industrial parts comprising the steps of treating a part having water on its surface with a composition to remove water on the parts surface,

• wherein the composition consists essentially of at least one polyorganosiloxane not-compatible with water selected from the group consisting of a straight chain polyorganosiloxane represented by the formula:
• ##STR17## wherein 1 is an integer from 0 to 5, and a cyclic polyorganosiloxane represented by the formula:
• ##STR18## wherein R.sup.1 in each of the above formulas is independently selected from the group consisting of methyl, ethyl, propyl, butyl, phenyl, trifluoro-methyl, amino, amide, acrylic acid ester and mercaptan;
• 1 is an integer from 0 to 5;
• and m is an integer from 3 to 7, wherein the cleaning composition is substantially free of water, and completely drying the part to remove the composition.

A method for deliquifying and cleaning an object comprising the steps of:

• (a) treating the object with an aqueous cleaning agent such that residual water remains on the object, and
• (b) then removing this water by treating the object with a composition consisting essentially of at least one polyorganosiloxane not-compatible with water selected from the group consisting of a straight chain polyorganosiloxane represented by the formula:
• ##STR19## wherein 1 is an integer from 0 to 5, and a cyclic polyorganosiloxane represented by the formula:
• ##STR20## wherein R.sup.1 in each of the above formulas is independently selected from the group consisting of methyl, ethyl, propyl, butyl, phenyl, trifluoro-methyl, amino, amide, acrylic acid ester and mercaptan;
• 1 is an integer from 0 to 5;
• and m is an integer from 3 to 7, wherein the cleaning composition is substantially free of water, and completely drying the part to remove the composition.

A method for cleaning and removing water from an object comprising the steps of:

• subjecting the object to be cleaned to an ultrasonic treatment and washing the part to clean the part and remove water from the part, with a cleaning composition consisting essentially at least one polyorganosiloxane not-compatible with water selected from the group consisting of a straight chain polyorganosiloxane represented by the formula:
• ##STR21## wherein 1 is an integer from 0 to 5, and a cyclic polyorganosiloxane represented by the formula:
• ##STR22## wherein R.sup.1 in each of the above formulas is independently selected from the group consisting of methyl, ethyl, propyl, butyl, phenyl, trifluoro-methyl, amino, amide, acrylic acid ester and mercaptan;
• 1 is an integer from 0 to 5;
• and m is an integer from 3 to 7, wherein the cleaning composition is substantially free of water, and completely drying the part to remove the composition.