Title:
TEMPERATURE-RESPONSIVE POLYMER AND WATER-BASED TEMPERATURE-RESPONSIVE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/224778
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polymer material of which the temperature responsiveness including a lower critical solution temperature (LCST) can be varied by various factors and which shows temperature responsiveness in water. Provided is a temperature-responsive polymer which contains a structural unit represented by formula (1) and has a polar bond and a carboxylate group in side chains, in which, in formula (1), M's independently represent a hydrogen atom or a monovalent cation, A's independently represent a polar bond selected from the group consisting of an amide bond, an ester bond, a carbonate bond, a urethane bond and an urea bond, circled Cy's independently represent a hydrocarbon ring structure having 4 to 30 carbon atoms in which a carbon atom constituting the hydrocarbon ring structure and binding to A and a carbon atom constituting the hydrocarbon ring structure and binding to COOM are located in a vicinal position each other, R1's independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R2's independently represent a single bond or an alkanediyl group having 1 to 3 carbon atoms.
Inventors:
HARADA ATSUSHI (JP)
KITAYAMA YUKIYA (JP)
EMOTO JUNYA (JP)
KITAYAMA YUKIYA (JP)
EMOTO JUNYA (JP)
Application Number:
PCT/JP2022/016157
Publication Date:
October 27, 2022
Filing Date:
March 30, 2022
Export Citation:
Assignee:
UNIV OSAKA PUBLIC CORP (JP)
International Classes:
C08F8/46; C08L39/00
Foreign References:
| JPH09157235A | 1997-06-17 | |||
| JPH09202755A | 1997-08-05 | |||
| JPH09202756A | 1997-08-05 | |||
| JP2003262957A | 2003-09-19 | |||
| JPH06279549A | 1994-10-04 | |||
| JP2003270784A | 2003-09-25 | |||
| JP2004163853A | 2004-06-10 | |||
| JP2005208366A | 2005-08-04 | |||
| JPH0912817A | 1997-01-14 | |||
| JP2012073598A | 2012-04-12 | |||
| JP2021175792A | 2021-11-04 |
Other References:
PONCE-VARGAS SANDRA M., CORTEZ-LEMUS NORMA A., LICEA-CLAVERÍE ANGEL: "Preparation of Poly( N -Vinylcaprolactam) (NVCL) and Statistical Copolymers of NVCL with Variable Cloud Point Temperature by Using A Trithiocarbonate RAFT Agent", MACROMOLECULAR SYMPOSIA, WILEY VCH VERLAG WEINHEIM, DE, vol. 325-326, no. 1, 1 March 2013 (2013-03-01), DE , pages 56 - 70, XP055978954, ISSN: 1022-1360, DOI: 10.1002/masy.201200045
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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