Organic solvent free developer for photosensitive coatings
AssigneeHoechst Celanese Corporation
InventorTulay Duyal
Life of this patent
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Abstract
An organic solvent free developing composition which comprises an aqueous admixture having a pH of from about 6.8 to about 7.2 of (a) one or more components selected from the group consisting of tri-sodium, -lithium, or -potassium phosphate, or sodium, lithium or potassium carbonate; and (b) one or more components selected from the group consisting of sodium, lithium, or potassium benzoate or salicylate; and (c) one or more components selected from the group consisting of sodium, lithium, potassium, magnesium or calcium octyl, decyl or dodecyl sulfate; and (d) one or more components selected from the group consisting of mono-sodium, -lithium, or -potassium phosphates and carbonates, and (e) sufficient water to formulate an effective developer.
Claims15
An organic solvent free developing composition which comprises an aqueous admixture having a pH of from about 6.8 to about 7.2 of
- (a) one or more components selected from the group consisting of tri-sodium, -lithium, or -potassium phosphate, or sodium, lithium or potassium carbonate;
- and
- (b) one or more components selected from the group consisting of sodium, lithium, or potassium benzoate or salicylate;
- and
- (c) one or more components selected from the group consisting of sodium lithium, potassium, magnesium or calcium octyl, decyl or dodecyl sulfate;
- and
- (d) one or more components selected from the group consisting of mono-sodium, -lithium, or -potassium phosphates and carbonates, and
- (e) sufficient water to formulate an effective developer
- wherein said ingredient (a) is present in an amount of from about 0.5% to about 10% by weight of the overall composition, and
- wherein said ingredient (b) is present is an amount of from about 0.5% to about 20% by weight of the overall composition, and
- wherein said ingredient (c) is present in an amount of from about 1% to about 10% by weight of the overall composition, and
- wherein said ingredient (d) is present in an amount of from about 0.2% to about 5.0% by weight of the overall composition, and
- wherein said composition is organic solvent free, and wherein at least one of components (a) and (d) is a phosphate.
Dependencies are inferred from the claim text.