speaker_2008_knischka

COSI 2008
June 23^th - June 27^th 2008
Noordwijk, The Netherlands

	4^th Coatings Science International 2008
	dr. Ralf Knischka
	Ciba Specialty Chemicals Inc. Coatings Effects Segment, Basel, Switserland

	Title lecture
	Novel approaches in NIR curing technology

	Author
	R. Knischka, P. Nesvadba, K. Powell, T. Jung, U. Lehmann, U. Stadler, K. Studer, J. Benkhoff

	Abstract
	Near infrared (NIR) curing technology is used more and more in coating processes where high belt speeds are needed reducing the curing time from minutes down to seconds. In times of increasing concern for energy consumption it is vital to optimize the uptake of energy by the coating system caused by differences in pigmentation. As standard clear coats typically do absorb NIR radiation only to a small extent the heat uptake proceeds mainly indirect via thermal conduction from the substrate, e.g. steel and by convection. In pigmented systems the NIR absorption is strongly dependent on the choice of inorganic and organic pigments. Again, pale shades absorb only little amounts of NIR radiation. For further penetration of NIR curing technology into industrial reality efficient, colorless and transparent NIR absorbers would be highly desirable. In this paper for the first time data will be presented showing the use of an efficient NIR-Absorber in different pigmented as well as transparent coating formulations.

	Biography
	Job: 11/2004- present: Ciba Holding Inc.; Application Staff Specialist TC-BLC Powder Coatings & New Technologies 09/2001-10/2004: Ciba Specialty Chemicals Inc., Basel; Lab Leader R&D Polymer Specialties Ciba R&D Award 2004 „Novel Polymer Specialties by Controlled Free Radical Polymerization“ FATIPEC Price of Excellence 2004 “Controlled Polymer Pigment Dispersants” 03/2000-09/2001: mnemoScience GmbH, Aachen, Germany, site head.
	Study: 02/1997-02/2000 PhD work at the Institute of Macromolecular Chemistry and Freiburg Materials Research Center of the Albert-Ludwigs-Universität in Freiburg i. Br. in the group of Prof. Dr. R. Mülhaupt (direct supervisor: PD Dr. H. Frey). Scholarship holder of the Graduiertenkolleg „structure formation in macromolecular systems“, 02/1997-01/2000 Degree: PhD, grade: magna cum laude 1 year at the CNRS, Strasbourg, France Further subjects: pharmaceutical technology, polymer physics 10/1991-01/1997 Study of chemistry at the Albert-Ludwigs-Universität in Freiburg i. Br. with emphasis on macromolecular chemistry. Diploma thesis on „Living anionic ring opening polymerisation of 1,1-dipropylsilacyclobutane“ in the group of Prof. Dr. R. Mülhaupt Degree: Dipl. Chem., grade: 1,6

R. Knischka, P. Nesvadba, K. Powell, T. Jung, U. Lehmann, U. Stadler, K. Studer, J. Benkhoff