Patent ID: 11945414
Assignee: CANON KABUSHIKI KAISHA
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 5:
6. The vehicle windshield wiper blade according to claim 2,
wherein assuming that:
respective line segments are drawn on the first tapered surface and on the second tapered surface of the tapered portion, parallelly to the first edge and the second edge at a distance of 0.5 mm from the first edge and the second edge respectively,
a length of each of the line segments is defined as L′,
points at ⅛L′, ½L′ and ⅞L′ from one end side on the line segment are defined as P0′, P1′ and P2′ respectively;
when samples sampled at P0′, P1′ and P2′ on the first tapered surface and the second tapered surface are subjected to a measurement by pyrolysis GC/MS,
a concentration of the trifunctional or higher polyfunctional alcohol in the polyurethane, on the first tapered surface, is 0.04 mmol/g to 0.39 mmol/g; and
a concentration of the trifunctional or higher polyfunctional alcohol in the polyurethane, on the second tapered surface, is 0.04 mmol/g to 0.39 mmol/g.