BIOLOGICALLY DEGRADABLE AND ABSORBABLE POLYMER HAVING FINE METAL CONTENT AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To produce a biologically degradable and absorbable polymer having a metal content of 1-20 ppm. SOLUTION: This flexible biologically degradable and absorbable polymer having a low metal content is synthesized by copolymerizing lactic acid lactide with -caprolactone in the prese...

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Bibliographic Details
Main Authors NAKAJIMA NAOKI, GEN JIYOUKIYUU
Format Patent
LanguageEnglish
Published 11.07.2000
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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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Abstract PROBLEM TO BE SOLVED: To produce a biologically degradable and absorbable polymer having a metal content of 1-20 ppm. SOLUTION: This flexible biologically degradable and absorbable polymer having a low metal content is synthesized by copolymerizing lactic acid lactide with -caprolactone in the presence of a small amount of metal-based catalyst (a catalyst based on sodium, potassium, aluminum or tin). Thereby, the flexible copolymer not needing the removal of the catalyst can be synthesized.
AbstractList PROBLEM TO BE SOLVED: To produce a biologically degradable and absorbable polymer having a metal content of 1-20 ppm. SOLUTION: This flexible biologically degradable and absorbable polymer having a low metal content is synthesized by copolymerizing lactic acid lactide with -caprolactone in the presence of a small amount of metal-based catalyst (a catalyst based on sodium, potassium, aluminum or tin). Thereby, the flexible copolymer not needing the removal of the catalyst can be synthesized.
Author NAKAJIMA NAOKI
GEN JIYOUKIYUU
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Snippet PROBLEM TO BE SOLVED: To produce a biologically degradable and absorbable polymer having a metal content of 1-20 ppm. SOLUTION: This flexible biologically...
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SubjectTerms CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
Title BIOLOGICALLY DEGRADABLE AND ABSORBABLE POLYMER HAVING FINE METAL CONTENT AND ITS PRODUCTION
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