BRANCHED BIODEGRADABLE POLYESTER AND METHOD FOR PRODUCING THE SAME

• Main Authors: OUCHI TATSURO, FUJITA YOTARO, KIDO SHOTA, OYA YUICHI, ISHIHARA KAZUTO, NAGAHAMA KOJI
• Format: Patent
• Language: English
• Published: 25.09.2008
• Subjects: CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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

PROBLEM TO BE SOLVED: To provide a safe and stably suppliable biodegradable material obtained by improving hard and brittle properties which are problems of a polylactic acid, and to provide a material for medical application such as a footing material for tissue regeneration including the biodegradable material. SOLUTION: The branched biodegradable polyester has a polyglycerol as a main chain, and polyester chains as side chains through the hydroxy groups of the polyglycerol. Concretely, the branched biodegradable polyester is represented by general formula (A) (wherein, R is independently a hydrogen atom or a polyester chain, with the proviso that 50% or more of the R is the polyester chain; and n is 2-20). COPYRIGHT: (C)2008,JPO&INPIT