COPOLYMERS HAVING AMIDE UNITS AND ETHER UNITS WITH IMPROVED OPTICAL PROPERTIES

Amide-ether based copolymer (I) is new. The amide is made up of a diamine and a dicarboxylic acid, preferably linear aliphatic acids. The diamine is a cycloaliphatic diamine. The amide units optionally have another polyamide comonomer. (I) has a high degree of transparency of greater than 75% at 560...

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Bibliographic Details
Main Authors TURAN, Inci, MONTANARI, Thibaut, BLONDEL, Philippe, MALET, Frédéric
Format Patent
LanguageEnglish
French
German
Published 08.09.2021
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Amide-ether based copolymer (I) is new. The amide is made up of a diamine and a dicarboxylic acid, preferably linear aliphatic acids. The diamine is a cycloaliphatic diamine. The amide units optionally have another polyamide comonomer. (I) has a high degree of transparency of greater than 75% at 560 nm on a plate with a thickness of 2 mm. (I) is present in an amorphous-/crystalline with an enthalpy of fusion during the second heat of a differential scanning calorimeter of an International Organization for Standardization is 30 J/g. (I) has a glass transition temperature (T g) of 75[deg]C. Independent claims are included for: (1) the preparation of (I); and (2) a shaped article, preferably transparent or translucent article like a fiber, tissue, film, sheet, rod, tube or injected part made up of (I).
Bibliography:Application Number: EP20070823506