Colorants for use within ink systems

Details Colorants for use within ink systems Colorants for use within ink systems

2005-03-22

2005-03-22

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

Reexamination Certificate

active

06870036

ABSTRACT:
Novel addition products of hydroxyl-protecting groups (such as isocyanates) with oxyalkylene-substituted intermediates, such as poly(oxyalkylenated) aniline compounds, for the eventual production of substituted, and substantially pure, colorants, particularly diazo and triphenylmethane derivatives, through the reaction of such intermediates with certain reactants are provided. These new colorants exhibit improved wax and/or oil solubility and high purity, particularly due to the inability of certain impurities to deleteriously react with the protected hydroxyl groups of either the intermediate or the colorant during and/or after formation thereof. A method for producing such novel colorants through utilization of these novel substantially pure colorant intermediates is also provided.

REFERENCES:
patent: 5637638 (1997-06-01), Chandler et al.
patent: 5782966 (1998-07-01), Bui et al.
patent: 5919839 (1999-07-01), Titterington et al.
patent: 5919846 (1999-07-01), Batlaw et al.
patent: 6255432 (2001-07-01), Evans et al.
patent: 0 769 509 (1996-10-01), None

Affiliated with

Also associated with

Rating

Colorants for use within ink systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Colorants for use within ink systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colorants for use within ink systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3384236