Main > PHARMA. > Drug Delivery > Hydrogel > BioErodible Hydrogel. > Patent. > Claims > Claim 1: CrossLinker PolyAcid with > >2 Acid Groups Covalently Connected > to Reactive Groups Use CrossLink > Polymer Filaments; Wherein between > >1 Reactive Group & Acidic Group > BioDegradable Sequence Consisting: > 1-6 HydroxyAlkyl Acid Ester Group > Seq. Claim 2: PolyAcid is > PolyCarboxylic Acid. Claim 3: > Water Soluble Region between > Acidic & Reactive Groups. Claim 4: > HydroGel. Claim 5: Polymer Filament > Hydrophobic. Claim 6: PolyAcid > >1 Acid Group Link to Water Soluble > Region. Claims 7,8,9: PolyAcid: > DiAcid; TriAcid; PentaAcid or

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DiAcid; TriAcid; PentaAcid or's subsections
TetraAcid resp. Claim 10: PolyAcid:

DiAcid; TriAcid; PentaAcid or's products
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