PHASE SEGREGATED BLOCK COPOLYMERS WITH TUNABLE PROPERTIES

Phase segregated block-copolymer based on repeating structural elements represented by formula (I) wherein PHA represents at least one block based on one or more a-hydroxy acids, PDAS represents a central block based on a dialkylsiloxane, the PDAS block has a weight average molecular weight in the r...

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Bibliographische Detailangaben
Hauptverfasser:	SHASTRI, Prasad V, MATLOUBIGHARAGOZLOO, Maziar
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DISINFECTION, STERILISATION, OR DEODORISATION OF AIR HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Phase segregated block-copolymer based on repeating structural elements represented by formula (I) wherein PHA represents at least one block based on one or more a-hydroxy acids, PDAS represents a central block based on a dialkylsiloxane, the PDAS block has a weight average molecular weight in the range of from 4000 to 10000, the blocks PHA have a weight average molecular weight in the range of from 2000 to 10 000, the phase segregated block copolymer has a weight average molecular weight of from 40 000 to 120 000. L'invention concerne un copolymère séquencé à ségrégation de phases à base d'éléments de répétition structuraux représentés par la formule (I) dans laquelle PHA représente au moins un bloc à base d'un ou de plusieurs acides a-hydroxy, PDAS représente un bloc central à base d'un dialkylsiloxane, le bloc PDAS a un poids moléculaire moyen en poids dans la plage de 4 000 à 10 000, les blocs PHA ont un poids moléculaire moyen en poids dans la plage de 2 000 à 10 000, le copolymère séquencé à ségrégation de phases a un poids moléculaire moyen en poids de 40 000 à 120 000.