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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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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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6.发明公开公开(公告)号：US20230259062A1
公开(公告)日：2023-08-17
申请号：US18306372
申请日：2023-04-25
IPC分类号： G03G21/00
CPC分类号： G03G21/0017 , G03G21/0029 , G03G2221/0005
摘要： An electrophotographic cleaning blade comprising: an elastic member containing polyurethane; and a support member supporting the elastic member, and cleaning a surface of a member to be cleaned in motion, by contact of part of the elastic member against the surface of the member to be cleaned, wherein the elastic member has, at least on the tip side, a plate shape having a main surface facing the member to be cleaned and a leading end surface that forms a tip side edge together with the main surface, and a coefficient of variation of area ratios of white regions in each of sections of a binarized image created from grayscale phase image obtained from the leading end surface, is 20.00 or less, and a value of HM1-HM2 is larger than 0.10 N/mm2.
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