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公开(公告)号：US20240111241A1
公开(公告)日：2024-04-04
申请号：US18519423
申请日：2023-11-27
发明人： MASANORI YOKOYAMA , KENYA TERADA , TAKEHIKO AOYAMA , SHOTA SEGAWA , HISAO KATO , MITSUHIRO KUNIEDA , ARIHIRO YAMAMOTO
CPC分类号： G03G21/0029 , B60S1/0419 , B60S2001/3836
摘要： Provided is a cleaning member, comprising an elastic member that includes polyurethane, wherein: when tan δ of a test piece sampled from the elastic member is measured in the temperature range of −20° C. to +60° C., the peak temperature of a peak indicating the maximum value of tan δ is at 15.0° C. or below; the maximum value of tan δ is 0.20 to 0.55; tan δ at a temperature of 55° C. is 0.13 or larger; and where the detected quantity of all ions obtained when the test piece is heated at a rate of temperature increase of 10° C./second to 1000° C. using a direct-sampling mass spectrometer is M1 and the integrated intensity of a peak in a derived ion thermogram that corresponds to a range of m/z values originating in multifunctional isocyanate with at least three isocyanate groups is M2, M2/M1 is at least 0.001.
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公开(公告)号：US20230159692A1
公开(公告)日：2023-05-25
申请号：US18158633
申请日：2023-01-24
发明人： SHOTA SEGAWA , TAKEHIKO AOYAMA , MASANORI YOKOYAMA , HIDEKAZU MATSUDA , SYOJI INOUE , ARIHIRO YAMAMOTO , YOUHEI IKEDA
CPC分类号： C08G18/664 , B60S1/38 , C08G18/7664 , C08G18/4283 , C08G18/10 , C08G18/3206 , C08G18/6644
摘要： A vehicle wiper blade comprises a blade support part and a lip part coupled swingably with the blade support part via a neck. The lip part comprises polyurethane. The polyurethane comprises a reactant of a composition including an isocyanate compound which includes diisocyanate and tri- or higher functional polyfunctional isocyanate, and an alcohol which includes tri- or higher functional polyfunctional alcohol. The diisocyanate has an aromatic ring in a molecule. When a molecule of the polyurethane is ionized with a mass spectrometer of a direct sample injection system, then obtained M1, M2 and M3 satisfy the following relation: M2/M1 is 0.001 to 0.028, M3/M1 is 0.020 to 0.110, and M2/M3 is 0.013 to 0.300, and a concentration of the polyfunctional alcohol in the polyurethane is 0.12 mmol/g to 0.65 mmol/g.
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公开(公告)号：US20230157493A1
公开(公告)日：2023-05-25
申请号：US18158628
申请日：2023-01-24
发明人： TAKEHIKO AOYAMA , HIDEKAZU MATSUDA , SYOJI INOUE , ARIHIRO YAMAMOTO , MASANORI YOKOYAMA , SHOTA SEGAWA
摘要： A wiper blade comprising: a hand grip portion; and an elastic portion supported by the hand grip portion and that is pressed against a surface to be cleaned; the elastic portion having, on a tip side, a main surface opposing a member to be cleaned, and a tip surface that forms a tip side edge together with the main surface, and in a specific observation region of the tip surface and the main surface, the average value of elastic modulus values obtained through measurement at a 0.1 μm pitch being 15 MPa to 470 MPa, and the coefficient of variation of the elastic modulus being 17.6% or less.
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公开(公告)号：US20230159001A1
公开(公告)日：2023-05-25
申请号：US18158617
申请日：2023-01-24
发明人： TAKEHIKO AOYAMA , MASANORI YOKOYAMA , SYOJI INOUE , ARIHIRO YAMAMOTO , HIDEKAZU MATSUDA , SHOTA SEGAWA
CPC分类号： B60S1/38 , C08L75/04 , B60S2001/3829 , B60S2001/3836 , C08L2207/32
摘要： A vehicle windshield wiper blade comprising: a blade support portion; and a lip portion, wherein the lip portion has a tapered portion having a cross section that is taken along a direction perpendicular to the longitudinal direction of the wiper blade and that has a width that gradually decreases from a side closer to the blade support portion towards a direction farthest away from the blade support portion, the lip portion has a tip surface and first and second tapered surfaces constituting the tapered portion, and, in a specific observation region of the first and second tapered surfaces, the average value of the elastic modulus measured at a 0.1 μm pitch is 15-470 MPa and the coefficient of variation of the elastic modulus is at most 17.6%.
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公开(公告)号：US20230157492A1
公开(公告)日：2023-05-25
申请号：US18158608
申请日：2023-01-24
发明人： SHOTA SEGAWA , TAKEHIKO AOYAMA , MASANORI YOKOYAMA , HIDEKAZU MATSUDA , SYOJI INOUE , ARIHIRO YAMAMOTO
CPC分类号： A47L1/06 , C08G18/10 , C08G18/7671 , C08G18/7614 , C08G18/7642 , C08G18/7678 , C08G18/776 , C08G18/721 , C08G18/4238 , C08G18/4854
摘要： A cleaning wiper blade comprises a hand grip part and an elastic part. The elastic part comprises a polyurethane. The polyurethane comprises a reactant of a composition including an isocyanate compound which includes diisocyanate and polyfunctional isocyanate, and an alcohol which includes polyfunctional alcohol. The diisocyanate has an aromatic ring in a molecule. When a molecule of the polyurethane is ionized with a mass spectrometer of a direct sample injection system, then obtained M1, M2 and M3 satisfy the is 0.013 to 0.300, and a concentration of the polyfunctional alcohol in the polyurethane is 0.12 mmol/g to 0.65 mmol/g.
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