Method of dyeing a plastic article

Details Method of dyeing a plastic article Method of dyeing a plastic article

2007-02-13

2007-02-13

Douyon, Lorna M. (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

C008S509000, C008S510000, C008S514000, C008S515000, C008S516000, C008S611000

Reexamination Certificate

active

10733111

ABSTRACT:
In the method of the present invention a plastic article (e.g., a molded article of thermoplastic polycarbonate) is immersed at least partially in a dye bath which includes one or more dyes, water, at least one carrier, and at least one diol. The dye bath contains: (i) at least one dye (e.g., a static and/or photochromic dye); (ii) water; (iii) at least one carrier represented by the following general formula I,in-line-formulae description="In-line Formulae" end="lead"?R—O—(CH2)n—OHIin-line-formulae description="In-line Formulae" end="tail"?wherein R is a radical selected from linear or branched C1–C18alkyl, benzyl, benzoyl and phenyl, and n is 2 or 3; and (iv) a diol selected from at least one of linear or branched C2–C20aliphatic diols, poly(C2–C4alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols. In an embodiment of the present invention, the carrier is ethyleneglycol butyl ether, and the diol is diethylene glycol. The present invention also relates to a method of separating the dye from the water, carrier and diol components of the dye bath, by contacting the dye bath with particulate activated carbon.

REFERENCES:
patent: 3514246 (1970-05-01), Bianco et al.
patent: 3532454 (1970-10-01), Fuhr et al.
patent: 3630664 (1971-12-01), Nentwig et al.
patent: 3953167 (1976-04-01), Minemura et al.
patent: 4076496 (1978-02-01), Hamano
patent: 4310330 (1982-01-01), Funaki et al.
patent: 4465728 (1984-08-01), Haigh et al.
patent: 4812142 (1989-03-01), Brodmann
patent: 5205862 (1993-04-01), Kiyomoto et al.
patent: 5258444 (1993-11-01), Zezinka et al.
patent: 5453100 (1995-09-01), Sieloff
patent: 6141027 (2000-10-01), Akutsu et al.
patent: 6454845 (2002-09-01), Shawcross et al.
patent: 6464733 (2002-10-01), Ryser
patent: 6733543 (2004-05-01), Pyles et al.
patent: 6749646 (2004-06-01), Pyles et al.
patent: 2002/0040511 (2002-04-01), Ryser
patent: 51-59254 (1976-05-01), None
patent: 55-17156 (1980-05-01), None
patent: 56-31085 (1981-03-01), None
patent: 04-057977 (1992-02-01), None
patent: 2000-248476 (2000-09-01), None
patent: 00/14325 (2000-03-01), None

Affiliated with

Also associated with

Rating

Method of dyeing a plastic article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of dyeing a plastic article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of dyeing a plastic article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3893690