发明名称 |
BIODEGRADABLE COMPOSITIONS SUITABLE FOR CONTROLLED RELEASE |
摘要 |
Simple mixing/blending of a special class of drug-depot forming tri-block copolymers polymers, with the opportunity to cost-effectively tailor drug delivery performances of such biodegradable, injectable depots in a clinical and an industrial setting. How to visualize these depots for various imaging related purposes is described. A composition comprising (a) an active ingredient, preferably a pharmaceutically active ingredient (b) a solvent and (c) a mixture of at least two types of tri-block copolymers of formula (1);B-A-B (1);wherein B stands for a hydrophobic block and wherein A stands for a hydrophilic block, wherein the mixture is prepared by mixing at least two types of tri-block copolymers having a degree of modification of 100% and wherein the at least two types of B-A-B types of tri-block copolymers differ only on the type of end-group or wherein the mixture is prepared by mixing at least two types of tri-block copolymers, wherein one of the at least two tri-block copolymers has a degree of modification of 100% and one of the at least two tri-block copolymers has a degree of modification of 0% and wherein the at least two types of B-A-B types of tri-block copolymers differ only on the degree of modification of the end-groups. |
申请公布号 |
US2015165042(A1) |
申请公布日期 |
2015.06.18 |
申请号 |
US201214008671 |
申请日期 |
2012.04.02 |
申请人 |
Petit Audrey;Bruin Peter;De Leeuw Mike;Meijboom Ronald |
发明人 |
Petit Audrey;Bruin Peter;De Leeuw Mike;Meijboom Ronald |
分类号 |
A61K47/34;A61K51/06;A61K49/04;A61K9/00 |
主分类号 |
A61K47/34 |
代理机构 |
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代理人 |
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主权项 |
1. A composition, comprising:
(a) an active ingredient, (b) a solvent and (c) a mixture of at least two types of tri-block copolymers of formula (1)
B-A-B (1) wherein B stands for a hydrophobic block and wherein A stands for a hydrophilic block, wherein the mixture is prepared by mixing at least two types of tri-block copolymers having a degree of modification of 100% and wherein the B-A-B types of tri-block copolymers differ only on the type of end-group or wherein the mixture is prepared by mixing at least two types of tri-block copolymers, wherein one of the at least two tri-block copolymers has a degree of modification of 100% and one of the at least two tri-block copolymers has a degree of modification of 0% and wherein the B-A-B types of tri-block copolymers differ only on the degree of modification of the end-groups, and where only tri-block copolymer with a degree of modification of 100% or 0% has been added. |
地址 |
Groningen NL |