The present invention comprises a waterless mixture which includes a biuret and/or urea, silica, and melamine particles coated with a layer of magnetite iron oxide for cleaning furnaces, heaters or boilers. A typical cleaning mixture comprises 30-50 percent silica, 20-50 percent biuret and/or urea, 20-40 percent melamine and 1-5 percent iron oxide. The cleaning can be performed at any time. This may lead to a reduction in fuel consumption, less air pollution, increased throughputs, and avoidance of equipment damage.

The invention is directed to a method of cleaning and disinfecting a contact lens. The method includes instructing a consumer to disinfect their contact lens comprising the following steps: remove a contact from an eye and position the lens in a lens assembly that includes a cap member; add a disinfection solution to the lens case such that the lens is submerged in the solution upon closure of the lens case with the cap member. The disinfection solution will comprise 0.5 wt. % to 6 wt. % hydrogen peroxide or a chemical precursor of hydrogen peroxide, and a P-metal modulating compound. The presence of the P-metal modulating compound in the disinfection solution decreases the neutralization rate of the hydrogen peroxide. The disinfection system exhibits a pseudo first-order, half-life of hydrogen peroxide from 12 minutes to 30 minutes over an initial sixty minutes of neutralization following exposure of the disinfection solution to a catalyst comprising a P-metal. This reduction in rate of peroxide neutralization can provide a more effective solution for killing certain microorganisms and fungi.

Urea gellants that are suitable for use in liquid compositions. Liquid compositions that include urea gellants. Related processes.

A polyimide-based resin film cleaning liquid includes at least one solvent selected from the group consisting of a hydroxy aliphatic carboxylic acid ester, an aliphatic carboxylic acid ester, a chain or cyclic ketone, an alkylene glycol monoalkyl ether, an alkylene glycol monoalkyl ether acetate, and an aprotic polar solvent other than these solvents.

The invention is directed to a method of cleaning and disinfecting a contact lens. The method includes instructing a consumer to disinfect their contact lens comprising the following steps: remove a contact from an eye and position the lens in a lens assembly that includes a cap member; add a disinfection solution to the lens case such that the lens is submerged in the solution upon closure of the lens case with the cap member. The disinfection solution will comprise 0.5 wt. % to 6 wt. % hydrogen peroxide or a chemical precursor of hydrogen peroxide, and a P-metal modulating compound. The presence of the P-metal modulating compound in the disinfection solution decreases the neutralization rate of the hydrogen peroxide. The disinfection system exhibits a pseudo first-order, half-life of hydrogen peroxide from 12 minutes to 30 minutes over an initial sixty minutes of neutralization following exposure of the disinfection solution to a catalyst comprising a P-metal. This reduction in rate of peroxide neutralization can provide a more effective solution for killing certain microorganisms and fungi.

The invention provides a composition for cleaning contaminants from semiconductor wafers following chemical-mechanical polishing. The cleaning composition contains a bulky protecting ligand, an organic amine, an organic inhibitor, and water. The invention also provides methods for using the cleaning composition.

Solid rinsing, cleaning and/or sanitizing compositions for various applications are provided. In particular, solid compositions include a complex of urea and an acid having desirable storage stability previously unavailable in solid urea/acid compositions. Stable solid compositions are disclosed and methods of making the same to overcome conventional limitations associated with forming kinetically and thermodynamically stable solids that utilize urea/acid compositions.

Novel acid-based chemistries that can be used in various cleaning, de-scaling, rust-removal, brightening, etching and other similar applications, including, but not limited to, those based upon hexafluorozirconic acid and other additives, such as urea in some applications, which are effective for a wide range of applications, while avoiding the health, safety and environmental issues that are often associated with the use of hydrochloric acid and other toxic chemistries.

Solid rinsing, cleaning and/or sanitizing compositions for various applications are provided. In particular, solid compositions include a complex of urea and an acid having desireable storage stability previously unavailable in solid urea/acid compositions. Stable solid compositions are disclosed and methods of making the same to overcome conventional limitations associated with with forming kinetically and thermodynamically stable solids that utilize urea/acid compositions.

The present invention comprises a waterless mixture which includes a biuret and/or urea, silica, and melamine particles coated with a layer of magnetite iron oxide for cleaning furnaces, heaters or boilers. A typical cleaning mixture comprises 30-50 percent silica, 20-50 percent biuret and/or urea, 20-40 percent melamine and 1-5 percent iron oxide. The cleaning can be performed at any time. This may lead to a reduction in fuel consumption, less air pollution, increased throughputs, and avoidance of equipment damage.