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Chain extenders

A technology of chain extender and general formula, applied in the field of chain extender, can solve problems such as limiting the performance range

Active Publication Date: 2008-10-29
POLYNOVO BIOMATERIALS PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High molecular weight with large pendant benzylic groups results in polyurethanes containing fragmented hard segments, which limits the range of properties achievable with these chain extenders in polyurethanes

Method used

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Embodiment 3

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Abstract

The present invention relates to chain extenders, processes for their preparation and their use in the preparation of biocompatible biodegradable polyurethanes and polyurethane ureas for biomedical applications such as stents, scaffolds for tissue engineering. The chain extenders comprise a compound of formula (I).

Description

chain extender technical field The present invention relates to chain extenders, their preparation and their use in the preparation of biocompatible biodegradable polyurethanes and polyurethaneureas for biomedical applications such as stents, orthopedic fixation scaffolds and scaffolds for tissue engineering the use of. Background technique Biodegradable polyurethanes and polyurethaneureas are typically prepared using polyester polyols, aliphatic diisocyanates, and diol or diamine chain extenders. The polyester polyol forms the "soft" segment of the polymer, while the diisocyanate and chain extender form the hard segment. The hard segments form ordered regions due to hydrogen bonding and impart high mechanical strength to the material. The soft segment is primarily formed from polyester polyol and provides elastic properties to the polymer. Polyester polyols, such as polycaprolactone, polyglycolide, and polylactide, are the most widely used polyols in biodegradable poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C07C69/16C07C69/28C07C69/60C07C69/40C07C69/675C07C69/732C08G18/38C08G63/02C08G63/00
CPCC08G18/6674C08G18/3221C08G18/4277C08G18/73C07C69/675A61L27/18C08G18/10C08G18/664A61L31/06C07C69/60C07C69/40C08G18/771A61P43/00C08L75/04C08G18/6603
Inventor 帕蒂拉贾·阿拉奇拉格·古纳蒂莱克蒂莫西·格雷姆·摩尔拉朱·阿迪卡里
Owner POLYNOVO BIOMATERIALS PTY LTD
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