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

Claim 4:
5. The vehicle windshield wiper blade according to claim 4,
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 are defined as L′,
points at ⅛L′, ½L′ and ⅞L′ from one end side on each of the line segments are defined as P0′, P1′ and P2′ respectively, and
when samples sampled at P0′, P1′ and P2′ on the first tapered surface and the second tapered surface are heated up to 1000° C. at a temperature rise rate of 10° C./s by using a mass spectrometer of a direct sample introduction type in which each of the samples are heated and vaporized in an ionization chamber and molecules of each of the samples are ionized,
M2/M1 is 0.0010 to 0.0150, and M3/M1 is 0.0200 to 0.1100, at the first tapered surface; and
M2/M1 is 0.0010 to 0.0150 and M3/M1 is 0.0200 to 0.1100, at the second tapered surface,
where: M1 is a detected amount of all ions;
M2 is an integrated intensity of a peak in an extracted ion thermogram corresponding to a range of an m/z value derived from the trifunctional or higher polyfunctional isocyanate; and
M3 is an integrated intensity of a peak in an extracted ion thermogram corresponding to a range of an m/z value derived from the diisocyanate.