Claims
- 1. A polyester fiber or article comprising at least two different compounds that, in combination, provide bluing effects within said fiber or article, and optionally at least one ultraviolet absorbing compound; wherein said combination of compounds exhibits at least one absorption peak and a λmax between 565 and 590 nm within said polyester fiber or article; and wherein said bluing agent exhibits a half-height bandwidth of at most 135 nm in relation to said at least one absorption peak.
- 2. A method for providing anti-yellowing benefits to a polyester fiber or article wherein said fiber or article optionally comprises at least one ultraviolet absorber compound, said method comprising providing a molten polyester formulation, introducing a bluing agent combination of compounds to said molten polyester wherein said bluing agent exhibits at least one absorption peak and a λmax between 565 and 590 nm within said polyester fiber or article; and wherein said bluing agent exhibits a half-height bandwidth of at most 135 nm in relation to said at least one absorption peak, and allowing the resultant polyester/bluing agent formulation to cool into a predetermined shape or form.
- 3. A liquid solution or dispersion comprising at least one ultraviolet absorber compound and at least two compounds in combination forming a bluing agent, wherein said bluing agent exhibits at least one absorption peak and a λmax between 565 and 590 nm within said polyester fiber or article; and wherein said bluing agent exhibits a half-height bandwidth of at most 135 nm in relation to said at least one absorption peak.
Parent Case Info
[0001] CROSS REFERENCE TO RELATED APPLICATIONS
[0002] This application is a continuation of co-pending application Ser. No. 10/140,229, filed on May 7, 2002.
Continuations (1)
|
Number |
Date |
Country |
Parent |
10140229 |
May 2002 |
US |
Child |
10748627 |
Dec 2003 |
US |