Claims
- 1. A concentrate for coloring abase polyester comprising:
a) one or more colorants; and b) from about 20 wt. % to about 80 wt. % of one or more copolymers comprising one or more of olefin/macrylate copolymer or olefin/methacrylate copolymer; wherein the wt. % is measured by total weight of the concentrate.
- 2. The concentrate of claim 1, wherein the copolymer comprises one or more of:
EMA, EMMA, EEA, EBA or EBMA.
- 3. The concentrate of claim 1, wherein the copolymer is present in the concentrate at from about 20 wt. % to about 60 wt. %, as measured by total weight of the concentrate.
- 4. A polyester composition comprising the concentrate of claim 1 and a base polyester, wherein the concentrate is present at from about 0.1 wt. % to about 10 wt. %, as measured by total weight of the composition.
- 5. The polyester composition of claim 4, wherein the concentrate is present in the composition at from about 1 wt. % to about 5 wt. %, as measured by total weight of the composition.
- 6. The polyester composition of claim 4, wherein the composition has a moisture content of less than about 0.1 wt. % as measured by total weight of the composition.
- 7. The polyester composition of claim 4, wherein the I.V. of the composition is equal to or less than about 0.04 g/dL below the I.V. of the base polyester.
- 8. The polyester composition of claim 4, wherein the olefin component of the copolymer comprises from about 40 wt. % to about 99 wt. % of the copolymer.
- 9. A molded article prepared from the polyester composition of claim 4.
- 10. A method for preparing a colored polyester composition comprising:
a. adding a color concentrate to a base polyester material, wherein the concentrate comprises:
i. one or more colorants; and ii. from about 20 wt. % to about 80 wt. % of a copolymer comprising one or more of: olefin/acrylate copolymer or olefin/methacrylate copolymer, wherein the wt. % of the concentrate is measured by total weight of the copolymer and colorant.
- 11. The method of claim 10, wherein the I.V. of the composition is equal to or less than about 0.04 g/dL below the I.V. of the base polyester.
- 12. The method of claim 10, wherein the copolymer comprises one or more of EMA, EMMA, EEA, EBA or EBMA.
- 13. The method of claim 10, wherein the copolymer is present in the concentrate at from about 20 wt. % to about 60 wt. %, as measured by total weight of the concentrate.
- 14. The method of claim 10, wherein the concentrate is present from about 0.1 wt. % to about 10 wt. %, as measured by total weight of the composition.
- 15. The method of claim 10, wherein the concentrate is present at from about 1 wt. % to about 5 wt. %, as measured by total weight of the composition.
- 16. The method of claim 10, wherein the composition has a moisture content of less than about 0.1 wt. %, as measured by total weight of the composition.
- 17. The method of claim 10, wherein the olefin component of the copolymer comprises from about 40 wt. % to about 99 wt. % of the copolymer, as measured by total weight of the copolymer.
- 18. The method of claim 10, further comprising the step of forming the colored polyester composition into a molded article.
- 19. A method of coloring a polyester composition consisting essentially of adding to a base polyester a copolymer comprising one or more of EMA, EMMA, EEA, EBA or EBMA, thereby providing a colored polyester composition.
- 20. The method of claim 19, wherein the copolymer is added at from about 2 wt. %, to about 40 wt. %, as measured by total weight of the composition.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional Application Serial No. 60/261,943, filed Jan. 16, 2001, the disclosure of which is incorporated herein in its entirety by this reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60261943 |
Jan 2001 |
US |