Abstract:
The invention concerns the use of β-dicarbonyl or aromatic ortho-hydroxycarbonyl compounds to mark hydrocarbons, as well as hydrocarbons containing β-dicarbonyl or aromatic ortho-hydroxycarbonyl compounds as markers and a method of assaying β-dicarbonyl or aromatic ortho-hydroxycarbonyl compounds in hydrocarbons.
Abstract:
The invention relates to the use of tungsten oxide or of tungstate to increase the heat-input amount of near infrared radiation in processes selected from laser welding of plastics, NIR curing of coatings, drying of printing inks, fixing of ink toners to a substrate, heating of plastic preforms, laser marking of plastics or paper.
Abstract:
The present invention pertains to a reversible thermochromic system comprising a &bgr;-phenylvinylketone or a ω-phenyl polyacetylenyl ketone with at least one acidic hydrogen and a base and to a reversible thermochromic composition comprising the reversible thermochromic system and a carrier material and to novel substituted &bgr;-phenylvinylketones or ω-phenyl polyacetylenyl ketones with at least one acidic hydrogen.
Abstract:
The present invention relates to an UV absorbing polymer composition comprising effective amounts of (a1) a nanoparticulate oxide selected from oxides of the groups 4 and 12 of the periodic table, wherein the oxide is doped with In, Ga and/or Al, and (b1) a UV stabilizing/absorbing substance comprising a sterically hindered amine and/or a polymeric hydroxyphenyltriazine; or (a2) a nanoparticulate oxide selected from oxides of the groups 4 and 12, and (b2) a UV light stabilizing substance comprising a N-oxygen-substituted sterically hindered amine. Furthermore, the present invention relates to a polymer comprising said composition and the use of said composition as a UV absorber in polymers, particularly in agricultural films or packaging films. Finally, the present invention relates to a process for producing doped nanoparticulate metal oxides.
Abstract:
The invention relates to the use of tungsten oxide or of tungstate to increase the heat-input amount of near infrared radiation in processes selected from laser welding of plastics, NIR curing of coatings, drying of printing inks, fixing of ink toners to a substrate, heating of plastic preforms, laser marking of plastics or paper.
Abstract:
The invention relates to a marking and denaturing composition, particularly suitable for marking and denaturing diesel oil and similar oil products. The said composition contains an anthraquinone derivative having the formula: where R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 identical or different, represent a hydrogen atom, a halogen atom or an alkyl, cycloalkyl or arylalkyl radical having from 1 to 12 carbon atoms.