Hydrogel-forming system with hydrophobic and hydrophilic...

Details Hydrogel-forming system with hydrophobic and hydrophilic... Hydrogel-forming system with hydrophobic and hydrophilic...

2005-07-12

2005-07-12

Nutter, Nathan M. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C525S937000, C602S048000, C604S048000

Reexamination Certificate

active

06916857

ABSTRACT:
A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide (e.g. dextran) containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom.

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