Compositions – Preservative agents
Reexamination Certificate
2011-07-12
2011-07-12
Wu, David (Department: 1762)
Compositions
Preservative agents
C524S008000, C524S555000, C526S303100
Reexamination Certificate
active
07976728
ABSTRACT:
It is intended to provide an aqueous solution of a thermoresponsive polymer and an aqueous dispersion of a thermoresponsive particle, which show an upper critical solution temperature (UCST) and are capable of maintaining a dissolved state and a dispersed state, respectively, even if they are stored for a long period of time at a temperature at which a ligand such as an antibody or an antigen is not inactivated. A UCST lowering agent is incorporated in a predetermined amount in an aqueous solution of a thermoresponsive polymer which shows a UCST in a state of containing water or an aqueous dispersion of a thermoresponsive particle containing the polymer, thereby lowering the UCST of the aqueous solution or aqueous dispersion to less than the storage temperature, and the resulting aqueous solution or aqueous dispersion is stored.
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Eguchi Masaru
Ohnishi Noriyuki
J.C. Patents
JNC Corporation
Nguyen Vu A
Wu David
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