Agfa-Gevaert

Clariant Corporation

J&ouml;rg Jung

Joan T Vermeersch

Marc Irene Van Damme

Erwin Dietz

Eric Verschueren

Joachim Weber

Guido I Hauquier

Dieter Schnaitmann

Leonhard Unverdorben

Helmuth Haberhauer

Klaus Saitmacher

Christian Wille

Kristina Schiffer

The invention provides a process for preparing azo colorants which comprises spraying one or more coupling components individually or in a mixture and one or more compatible diazonium salts individually or in a mixture, in their solution or suspension form through nozzles to a point of conjoint collision in a reactor chamber enclosed by a housing in a microjet reactor, a gas or an evaporating liquid being passed into the reactor chamber through an opening in the housing for the purpose of maintaining a gas atmosphere in the reactor chamber, and the resulting product solution or suspension and the gas or the evaporated liquid being removed from the reactor through a further opening in the housing by means of overpressure on the gas entry side or underpressure on the product and gas exit side.

Process for preparing azo colorants

According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate having on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution but not in water and less than 5% by weight versus the polymer, soluble in the aqueous alkaline solution of a hydrophilic polymer and a top layer on the same side of the lithographic base as the first layer which top layer is IR-sensitive and unpenetrable for or insoluble in an alkaline developer wherein said first layer and said top layer may be one and the same layer; characterized in that said top layer contains a compound selected from the group consisting of a polymer in an amount from 30 mg to 500 mg/m , a triaryl methane dye and a phthalocyanine dye.

Heat mode sensitive imaging element for making positive working printing plates

Growing community of inventors

Flörsheim, Germany

Jörg Jung

Growing community of inventors

Flörsheim, Germany

J&ouml;rg Jung

Jörg Jung