Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Mixed dyes – noncomplexed
Reexamination Certificate
2008-06-17
2008-06-17
Douyon, Lorna M. (Department: 1796)
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Mixed dyes, noncomplexed
C008S669000, C008S673000, C008S681000, C008S687000
Reexamination Certificate
active
07387647
ABSTRACT:
A dye composition, comprising (A) at least one disazo dye selected from the formula (I) or (II),wherein R, R1, R2, D1and D2are defined as in the specification; and (B) a diazo dye of the formula (III),wherein (R9)0˜2, (R10)0˜2, Q1and Q2are defined as in the specification. These dye compositions have high fixation and good build-up. They are distinguished also by high washing off and low nylon staining and they are suitable for dyeing and printing of materials containing either cellulose fibers, such as cotton, artificial cotton, linen, and artificial linen, or polyamide fibers, such as wool, silk, and nylon etc. Dyed materials with excellent properties can be obtained, showing especially outstanding performance in washing off, levelness, build-up, wet fastness and light fastness.
REFERENCES:
patent: 5780602 (1998-07-01), Schumacher et al.
patent: 6790411 (2004-09-01), Read
Hsu Cheng-Hsiang
Huang Huei-Chin
Lai Bao-Kun
Lee Sheena
Lee Sheue-Rong
Bacon & Thomas PLLC
Douyon Lorna M.
Everlight USA, Inc.
Khan Amina
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