Title:
NOVEL SHORT-CHAIN POLYMERIC YELLOW CYANOESTER-DERIVATIVE COLORANTS AND ARTICLES COMPRISING SUCH COLORANTS
Document Type and Number:
WIPO Patent Application WO2003040237
Kind Code:
A3
Abstract:
A yellow colorant comprising a chromophore having at least one poly(oxy-C2-C4-alkylene) chain attached to an aromatic methine backbone having at least one cyanoester moiety attached thereto is provided. The ester portion must include a C1-C8 (such as ethyl, butyl, hexyl, or ethyl-hexyl) pendant group and the poly(oxyalkylene) chain must be at most 10 monomers and at least 3 monomers, with ethylene oxide as the capping group. Such a specific group of coloring agents provides the best overall yellow colorations or effects (either alone or in blends with other coloring agents, particularly at low color loadings) as well as the best overall low extraction levels when present within clear polyester (such as polyethylene terephthalate, for example), when compared to all other known polymeric yellow colorants for the same end-use. Compositions and articles comprising such colorants are provided as well as methods for producing such inventive colorants.
Inventors:
STEPHENS ERIC B
Application Number:
PCT/US2002/029675
Publication Date:
October 16, 2003
Filing Date:
September 19, 2002
Export Citation:
Assignee:
MILLIKEN & CO (US)
International Classes:
C09B23/00; C08G65/26; C08K5/00; C08K5/315; C08L67/02; C08L75/04; C09B69/00; (IPC1-7): D06P5/13; C09B69/10
Foreign References:
| US5591833A | 1997-01-07 |
Other References:
See also references of EP 1448844A4
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