Biocompatible microcapsules
First Claim
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1. A method for grafting water soluble non-ionic polymers to polyamine or polyimine polycationic polymers comprising:
- a) activating the reactive groups capable of being covalently linked to a coupling agent on the water soluble non-ionic polymers by using an activation agent selected from the group consisting of carbodiimidazole, sulfonyl chlorides and chlorocarbonates, andb) coupling the activated water soluble non-ionic polymers to the polycationic polypeptides.
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Abstract
Biocompatible microcapsules useful for transplanting foreign material into an animal body, and the method of their production, are described, wherein the microcapsules contain an outermost layer of water soluble non-ionic polymers such as PEO to create resistance to cell adhesion on the surface of the microcapsules.
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11 Claims
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1. A method for grafting water soluble non-ionic polymers to polyamine or polyimine polycationic polymers comprising:
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a) activating the reactive groups capable of being covalently linked to a coupling agent on the water soluble non-ionic polymers by using an activation agent selected from the group consisting of carbodiimidazole, sulfonyl chlorides and chlorocarbonates, and b) coupling the activated water soluble non-ionic polymers to the polycationic polypeptides. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification