C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/04 (2006.01) C08K 5/00 (2006.01) C08L 67/02 (2006.01)
Patent
CA 2167704
This invention relates to naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence. More specifically, the process involves melt blending a naphthalenedicarboxylic acid containing polymer with 0.1 to 5 weight percent of a fluorescence quenching compound selected from a halogen containing aromatic compound, an aromatic ketone or a naphthol compound and thermoforming the blend into an article. The blends are useful for packaging applications where clarity and/or aesthetic appeal are of concern.
Compositions de polymères renfermant de l'acide naphtalènedicarboxylique et présentant une fluorescence réduite. Plus spécialement, on a mis au point un procédé consistant à mélanger à chaud un polymère renfermant de l'acide naphtalènedicarboxylique, avec 0,1 à 5 % en poids d'un composé atténuant la fluorescence sélectioné parmi un composé aromatique renfermant un halogène, un cétone aromatique ou un composé au naphtol, et à effectuer le thermoformage du mélange afin d'obtenir un article. Les mélanges trouvent application dans le conditionnnement lorsque l'on souhaite obtenir la transparence et/ou un attrait esthétique.
Jones Allan Scott
Mills David Earl
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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