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US 6,645,928 B1Granted
Hydrophobic liquid photobleaches
AssigneeCase Western Reserve University
InventorsMalcolm Edward Kenney, Ying-Syi Li, Gongzhen Cheng, Rafael Ortiz, David Johnathan Kitko, Michael Eugene Burns
Life of this patent
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Abstract
Nonionic, hydrophobic photobleach compounds, especially those based on Si(IV) phthalocyanines, which are liquid at ambient temperatures and their use in a variety of consumer product compositions.
Claims9
A compound having the formula:
- Si(IV)(Pc)L2
- wherein PC is phthalocyanine and L represents said axial ligands;
- and wherein each L can vary independently and is selected from the group consisting of:
- —Osi (R1)(OR2)2
- wherein R1 is a hydrocarbyl moiety having 12 or more carbon atoms and R2 is a branched hydrocarbyl moiety having 10 or more carbon atoms.
2 more elements
A method of cleaning a fabric comprising the step of treating the fabric with a composition comprising a photobleach compound having the formula:
- Si(IV)(Pc)L2
- wherein PC is phthalocyanine and L represents said axial ligands;
- and wherein each L can vary independently and is selected from the group consisting of:
- —Osi(R1)(OR2)2
- wherein R1 is a hydrocarbyl moiety having 12 or more carbon atoms and R2 is a branched hydrocarbyl moiety having 10 or more carbon atoms.
2 more elements
A method of cleaning dingy fabric comprising the step of treating the dingy fabric with a composition comprising a photobleach compound having the formula:
- Si(IV)(Pc)L2
- wherein PC is phthalocyanine and L represents said axial ligans;
- and wherein each L can vary independently and is selected from the group consisting of:
- —Osi(R1)(OR2)2
- wherein R1 is a hydrocarbyl moiety having 12 or more carbon atoms and R2 is a branched hydrocarbyl moiety having 10 or more carbon atoms.
2 more elements
Dependencies are inferred from the claim text.