Title:
WIPER BLADE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2022027511
Kind Code:
A
Abstract:
To provide a wiper blade for a vehicle, capable of exhibiting excellent wiping performance.SOLUTION: In a wiper blade for a vehicle, the surface of a member to be cleaned is cleaned by bringing one portion of a lip part into contact with the surface. A polyurethane in the lip part includes the reaction product of a composition which includes a reactant of compositions including an isocyanate compound including a diisocyanate and a tri- or higher functional polyfunctional isocyanate; and an alcohol including a tri- or higher functional polyfunctional alcohol. The diisocyanate has an aromatic ring in its molecule. When the detected quantity of all ions is represented by M1, the tri- or higher functional polyfunctional isocyanate is represented by M2, and the diisocyanate is represented by M3, M2/M1 is 0.001-0.028, M3/M1 is 0.020-0.110, and M2/M3 is 0.013-0.300. The concentration of the tri- or higher functional polyfunctional alcohol in the polyurethane is 0.12 mmol/g-0.65 mmol/g.SELECTED DRAWING: Figure 1
Inventors:
SEGAWA SHOTA
AOYAMA KATSUHIKO
YOKOYAMA YOSHINORI
MATSUDA HIDEKAZU
INOUE AKISHI
YAMAMOTO ARIHIRO
IKEDA YOHEI
AOYAMA KATSUHIKO
YOKOYAMA YOSHINORI
MATSUDA HIDEKAZU
INOUE AKISHI
YAMAMOTO ARIHIRO
IKEDA YOHEI
Application Number:
JP2021112683A
Publication Date:
February 10, 2022
Filing Date:
July 07, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
B60S1/38; C08G18/32; C08G18/65; C08G18/76
Attorney, Agent or Firm:
Hidewa Patent Office