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Title:
WIPER BLADE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/025267
Kind Code:
A1
Abstract:
To provide a wiper blade for a vehicle, whereby superior wiping ability can be demonstrated.　A wiper blade for a vehicle, in which one portion of a lip part of the wiper blade is brought into contact to clean the surface of a member to be cleaned, wherein: a polyurethane in the lip part includes a reaction product of a composition that includes an isocyanate compound including a diisocyanate and a trifunctional or higher polyfunctional isocyanate, and an alcohol including a trifunctional or higher polyfunctional alcohol; the diisocyanate has an aromatic ring in the molecule thereof; M2/M1 is 0.001-0.028, M3/M1 is 0.020-0.110, and M2/M3 is 0.013-0.300, where M1 is the detected quantity of all ions, M2 is the trifunctional or higher polyfunctional isocyanate, and M3 is the diisocyanate; and the concentration of the trifunctional or higher polyfunctional alcohol in the polyurethane is 0.12-0.65 mmol/g.

Inventors:
SEGAWA SHOTA (JP)
AOYAMA TAKEHIKO (JP)
YOKOYAMA MASANORI (JP)
MATSUDA HIDEKAZU (JP)
INOUE SYOJI (JP)
YAMAMOTO ARIHIRO (JP)
IKEDA YOUHEI (JP)
Application Number:
PCT/JP2021/028372
Publication Date:
February 03, 2022
Filing Date:
July 30, 2021
Export Citation:
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Assignee:
CANON KK (JP)
International Classes:
C08G18/10; B60S1/38; C08G18/32; C08G18/65; C08G18/76
Domestic Patent References:
WO2019176659A12019-09-19
WO2016098336A12016-06-23
Foreign References:
JP2020094096A2020-06-18
JP2021092756A2021-06-17
JP2004051894A2004-02-19
JP2020130696A2020-08-31
JP2021112683A2021-08-05
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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