LIGHT- AND HEAT-RESPONSIVE ADSORBENTS AND PROCESS FOR RECOVERY OF SOLUTES

Title:

LIGHT- AND HEAT-RESPONSIVE ADSORBENTS AND PROCESS FOR RECOVERY OF SOLUTES

Document Type and Number:

WIPO Patent Application WO/2005/025740

Kind Code:

A1

Abstract:

Light- and heat-responsive adsorbents having both light responsiveness causing reversible adsorption/desorption transition of a solute contained in a solution in dependence on whether they are irradiated with light or not and heat responsiveness causing reversible dissolution/precipitation or swelling/shrinking transition in dependence on temperature, preferably copolymers made from monomer mixtures comprising 1’,3’,3’-trimethyl-6-(acryloyloxy)spiro(2H-1-benzopyran-2, 2’-indole) and N-isopropylacrylamide. Thus, the invention provides adsorbents which have functions of adsorbing and desorbing a solute in a solution and can recover solutes at high recovery efficiencies.

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Inventors:

Suzuki, Takayuki

Application Number:

PCT/JP2004/010734

Publication Date:

March 24, 2005

Filing Date:

July 28, 2004

Export Citation:

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Assignee:

TOKYO DENKI UNIVERSITY (2-2 Kanda-nishikicho, Chiyoda-ku Tokyo, 57, 10184, JP)
Suzuki, Takayuki

International Classes:

B01J20/26; B01J45/00; C08F220/34; C08F220/54; B01D15/38; B01J20/22; B01J45/00; C08F220/00; B01D15/26; (IPC1-7): B01J20/26; B01J39/20; B01J45/00; C08F220/34; C08F220/56

Attorney, Agent or Firm:

Miyoshi, Hidekazu (Toranomon Kotohira Tower, 2-8 Toranomon 1-chom, Minato-ku Tokyo, 105-0001, JP)

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