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US 2015/0353824 A1Published application
Color inhibitor for quaternary ammonium hydroxide in non-aqueous solvent
AssigneeSechem, Inc.
InventorsTim ENGEL, Alfred VAN LIER
Life of this patent
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Abstract
A composition including a quaternary onium hydroxide in a non-aqueous solvent, wherein the quaternary ammonium hydroxide has a concentration in the range from about 5% by weight to about 50% by weight of the composition; and imidazolidine-2,4-dione, wherein the imidazolidine-2,4-dione has a concentration in the range from about 10 to about 5000 parts per million of the composition.
Claims5
A composition comprising:
- a quaternary onium hydroxide in a non-aqueous solvent, wherein the quaternary ammonium hydroxide has a concentration in the range from about 5% by weight to about 50% by weight of the composition;
- and
- imidazolidine-2,4-dione, wherein the imidazolidine-2,4-dione has a concentration in the range from about 10 to about 5000 parts per million of the composition.
Dependencies are inferred from the claim text.