-
公开(公告)号：US20160376396A1
公开(公告)日：2016-12-29
申请号：US15103005
申请日：2014-08-22
发明人： Yuki Hidaka
CPC分类号： C08G18/10 , C08G18/3206 , C08G18/3215 , C08G18/4812 , C08G18/4825 , C08G18/4829 , C08G18/7621 , C09K19/3885
摘要： A liquid crystalline polyurethane elastomer is produced by reacting an isocyanate component, a high-molecular-weight polyol component and a mesogenic diol represented by formula (1), and having a crosslinking site that is introduced by a tri-functional or higher isocyanate in the isocyanate component and/or a high-molecular-weight polyol having a number average molecular weight of 400 or more and less than 7000 and having three or more hydroxy groups, in the high-molecular-weight polyol component, wherein the melting point of a mesogenic unit does not exist in a temperature range lying between the glass transition temperature (Tg) and the (liquid crystal phase)-to-(isotropic phase) transition temperature (Ti) of the polyurethane elastomer, and a liquid crystal is developed at a temperature between the Tg and the Ti. (In the formula, X represents an alkylene group having 3 to 20 carbon atoms; and Y represents a single bond, —N═N—, —CO—, —CO—O— or —CH═N—.)
摘要翻译： 本发明的目的是提供一种具有低液晶显影温度的液晶聚氨酯弹性体，并且当液晶在其中显影时具有橡胶弹性，以及制备该液晶聚氨酯弹性体的方法。 根据本发明的液晶聚氨酯弹性体的特征在于通过至少使异氰酸酯组分，高分子量多元醇组分和由通式（1）表示的介晶二醇彼此反应而制备，并且还被表征 通过在异氰酸酯组分中具有由三官能以上异氰酸酯引入的交联部位和/或数均分子量为400以上且小于7000的具有三个以上羟基的高分子量多元醇 在高分子量多元醇组分中，在玻璃化转变温度（Tg）和（液晶相）至（各向同性相）之间的温度范围内，介晶单元的熔点不存在， 聚氨酯弹性体的转变温度（Ti）和液晶在Tg和Ti之间的温度下显影。 （式中，X表示碳原子数3〜20的亚烷基，Y表示单键，-N = N-，-CO-，-CO-O-或-CH = N-）
-
公开(公告)号：US20150008618A1
公开(公告)日：2015-01-08
申请号：US14369992
申请日：2013-03-19
发明人： Takashi Kitamura
CPC分类号： B29C41/085 , B29C47/364 , B29C47/38 , B29C47/6068 , B29C47/92 , B29C2947/92514 , B29C2947/92571 , B29C2947/9259 , B29C2947/92885 , B29C2947/92933 , B29C2947/92952 , B29D23/00 , B29D30/3007 , B29D30/62 , B29L2023/00
摘要： A method for forming a cylindrical rubber member includes bringing a die 11 close to a forming drum 2, forming a winding start portion S1 by extruding a rubber S and simultaneously starting to rotate the forming drum 2 to gradually increase an extruding amount to an amount Q1 and gradually increase a distance between the die 11 and the forming drum 2 to a distance D2 corresponding to a desired thickness of the cylindrical rubber member, winding the rubber S by maintaining the extruding amount at the amount Q1, and maintaining the distance between the die 11 and the forming drum 2 at the distance D2, and forming a winding end portion S2 on the winding start portion S1 by maintaining the distance between the die 11 and the forming drum 2 at the distance D2 and gradually reducing the extruding amount from the amount Q1.
摘要翻译： 一种形成圆筒形橡胶构件的方法包括使模具11靠近成形滚筒2，通过挤出橡胶S形成卷绕开始部分S1，同时开始使成形滚筒2旋转，从而将挤出量逐渐增加到量Q1 并且将模具11与成形滚筒2之间的距离逐渐增加到对应于圆筒形橡胶构件的期望厚度的距离D2，通过将挤出量保持在量Q1来卷绕橡胶S，并且保持模具之间的距离 11和成形滚筒2处于距离D2处，并且通过将模具11和成形滚筒2之间的距离保持在距离D2处，在卷绕开始部分S1上形成卷绕端部S2，并将挤出量从数量 Q1。
-
公开(公告)号：US11207921B2
公开(公告)日：2021-12-28
申请号：US16188700
申请日：2018-11-13
发明人： Kazuki Ohta
摘要： A shoulder land portion includes a main body land portion formed between a thin groove extending in a tire circumferential direction on a tire width direction inner side of a ground contact end and a shoulder main groove, and the main body land portion includes a contact region adjacent to the shoulder main groove provided along the tire circumferential direction and a non-contact region provided along the tire circumferential direction between the thin groove and the contact region. The contact region contacts a road surface in a normal load state, and the non-contact region is recessed to a tire radial direction inner side from a tread surface. The non-contact region does not contact the road surface in the normal road state, and when a length of the non-contact region is W1 and a length of the main body land portion both along the tire width direction is Rw, 0.2Rw≤W1≤0.5Rw.
-
公开(公告)号：US11198334B2
公开(公告)日：2021-12-14
申请号：US16188903
申请日：2018-11-13
发明人： Hirokazu Sakata
摘要： A pneumatic tire includes: paired bead portions respectively including annular bead cores and bead fillers disposed on an outer side in a tire radial direction of the bead cores; sidewall portions respectively extending outward in the tire radial direction from the bead portions; a tread portion connected to outer ends in the tire radial direction of the sidewall portions to form a tread; a carcass layer suspended between the bead portions; and a belt layer provided on an outer side in the tire radial direction of the carcass layer in the tread portion. The carcass layer has a first ply that continuously extends between the bead portions and that has opposite end portions and a second ply that extends from a position in contact with an inner peripheral face of an end portion, wherein the second ply has higher tensile strength than the tensile strength of the first ply.
-
公开(公告)号：US11117422B2
公开(公告)日：2021-09-14
申请号：US16117376
申请日：2018-08-30
发明人： Noriyuki Tsuji
摘要： A non-pneumatic tire includes a support structure for supporting a load from a vehicle. The support structure includes an inner annular portion, an outer annular portion concentrically provided on an outer side of the inner annular portion, and a plurality of connecting portions which connect the inner annular portion and the outer annular portion to each other and are provided in a tire circumferential direction independently of one another, the plurality of connecting portions are configured such that elongated plate-like first connecting portions and elongated plate-like second connecting portions are arrayed along the tire circumferential direction, an angle α and an angle β, the angles being formed by an inner circumferential surface of the outer annular portion and both side surfaces of each of the connecting portions, both surfaces facing the tire circumferential direction, are 75° or more and 120° or less.
-
公开(公告)号：US11097573B2
公开(公告)日：2021-08-24
申请号：US16210184
申请日：2018-12-05
发明人： Kazuki Ohta
摘要： A pneumatic tire is provided with tread rubber that forms a contact patch; and a belt layer which is disposed toward the interior in a tire radial direction from the tread rubber. A shoulder lug portion is provided with a narrow groove that partitions the shoulder lug portion into a main body portion and into a sacrificial portion. A plurality of concavities are open toward both the contact patch at the main body portion and the groove side face, wherein innermost ends in the tire width direction of the respective concavities are disposed so as to be at the same location in the tire width direction as an outermost end in the tire width direction of the belt layer or are arranged toward the exterior in the tire width direction from the outermost end in the tire width direction of the belt layer.
-
公开(公告)号：US11052709B2
公开(公告)日：2021-07-06
申请号：US16210421
申请日：2018-12-05
发明人： Toshikazu Yasunaga
摘要： A pneumatic tire includes land portions defined by grooves, and sipes that are formed in the land portions and intersect the grooves. The sipes form acute angle portions and obtuse angle portions with the grooves. Notches are formed in the obtuse angle portions.
-
公开(公告)号：US10940721B2
公开(公告)日：2021-03-09
申请号：US16218923
申请日：2018-12-13
发明人： Harunobu Suita
摘要： A tire has cap rubber that forms a contact patch. The cap rubber has a plurality of lugs. A shoulder lug, which among the plurality of lugs is that which is located outwardmost in a tire width direction, has a narrow groove that extends in the tire circumferential direction and that partitions the shoulder lug into a main lug portion toward the interior in the tire width direction, and a sacrificial lug portion toward the exterior in the tire width direction; and low-modulus rubber, for which stress at a given elongation is lower than that of the cap rubber, is arranged at a corner where the contact patch at the main lug portion and a groove side face toward the interior in the tire width direction which forms the narrow groove intersect.
-
-
-
-
-
-
-
-
搜索结果
1766 条记录 (耗时 0.033 秒)
