Bioconcentrates containing organic pigments intended for dyeing bioplastic materials

• Main Authors: Slavkovská, Dominika, Tomčíková, Zita, Pekarčík, František
• Format: Patent
• Language: English; Slovak
• Published: 24.07.2024
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; LAKES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Bioconcentrates containing organic pigments intended for dyeing bioplastic materials (bioplastic moldings, foils, fibers and textiles) are composed of bioplastic pigment dispersion in a proportion of 96.4 to 98.7% by weight. bioplastic based on polylactic acid or polyhydroxyalkanoates or their mixture, from 1.0 to 3.0 wt.% organic pigment and from 0.3 to 0.6 wt.% dispersant. The bioplastic can optionally contain plasticizers for polylactic acid PLA and/or for polyhydroxyalkanoate PHA. Color pigments are of organic origin with a processing temperature of up to 300°C. The production method of the bioconcentrates in question consists of a two-stage preparation of a powder premix and its subsequent remelting in defined facilities. Biokoncentráty s obsahom organických pigmentov určené na farbenie bioplastových materiálov (bioplastové výlisky, fólie, vlákna a textílie) sú zložené z bioplastovej pigmentovej disperzie v podiele od 96,4 do 98,7 % hmotn. bioplastu na báze kyseliny polymliečnej alebo polyhydroxyalkanoátov, alebo ich zmesi, od 1,0 do 3,0 % hmotn. organického pigmentu a od 0,3 do 0,6 % hmotn. dispergátora. Bioplast môže voliteľne obsahovať plastifikátory pre kyselinu polymliečnu PLA a/alebo pre polyhydroxyalkanoát PHA. Farebné pigmenty sú organického pôvodu s teplotou spracovania do 300 °C. Spôsob výroby predmetných biokoncentrátov pozostáva z dvojstupňovej prípravy práškového premixu a jeho následného pretavenia v definovaných zariadeniach.