Partially biodegradable temperature and pH sensitive hydrogel

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carbohydrate or derivative as a reactant

Reexamination Certificate

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Reexamination Certificate

active

07420024

ABSTRACT:
Partially biodegradable hydrogel that changes its volume and shape in response to change in pH and/or temperature is prepared by UV irradiation of composition comprising dextran-maleic acid monoester and N-isopropylacrylamide.

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