Title:
HYDROPHILIC COPOLYMER AND MEDICAL INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2022/202805
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a novel hydrophilic copolymer capable of forming a surface lubrication layer that exhibits durability (lubricity-maintaining properties). The present invention pertains to a hydrophilic copolymer that contains a structural unit derived from polymerizable monomer (A) having a sulfobetaine structure, a structural unit derived from polymerizable monomer (B) having at least one group selected from the group consisting of sulfonic acid group (-SO3H), sulfuric acid group (-OSO3H), sulfurous acid group (-OSO2H) and salts thereof, and a structural unit derived from polymerizable monomer (C) having a -Si(R1)a(OR2)3-a group (wherein: R1s independently represent a linear or branched alkyl group having 1-20 carbon atoms, a linear or branched acyl group having 2-21 carbon atoms or a linear or branched ether group having 2-21 carbon atoms; R2s independently represent a hydrogen atom, a linear or branched alkyl group having 1-20 carbon atoms, a linear or branched acyl group having 2-21 carbon atoms or a linear or branched ether group having 2-21 carbon atoms; and a is an integer of 0-2).
Inventors:
KURAMOTO MASANORI (JP)
Application Number:
PCT/JP2022/013126
Publication Date:
September 29, 2022
Filing Date:
March 22, 2022
Export Citation:
Assignee:
TERUMO CORP (JP)
International Classes:
C08F220/38; A61L29/08; A61L31/10; C08F230/08
Domestic Patent References:
| WO2018038063A1 | 2018-03-01 | |||
| WO2017022815A1 | 2017-02-09 |
Foreign References:
| JP2016052346A | 2016-04-14 | |||
| JP2016123491A | 2016-07-11 |
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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