公开(公告)号：US06270860B1

公开(公告)日：2001-08-07

申请号：US08428820

申请日：1995-04-25

申请人： Toshihiro Nakata ,  Norio Suzuki

发明人： Toshihiro Nakata ,  Norio Suzuki

IPC分类号： H05H100

CPC分类号： C08J7/047 ,  C08J2383/04 ,  C08J2475/00 ,  Y10T428/263 ,  Y10T428/31598

摘要： A push button switch covering member of a silicone rubber is imparted with excellent resistance against stain deposition and abrasive wearing by providing a protective overcoating layer of a urethane resin-based coating composition capable of being cured by forming urethane linkages between isocyanate groups of a polyisocyanate compound and hydroxy groups of a polyhydroxy compound. The coating procedure with the coating composition on the surface of a silicone rubber-made covering member is preceded by a plasma treatment so as to activate the surface resulting in an increased adhesive bonding strength between the silicone rubber body and the coating layer. The improvement is more remarkable when the plasma-activated surface is subjected to a priming treatment with a silane coupling agent and coating with the coating composition is undertaken as soon as possible or within 60 minutes after completion of the plasma treatment.

摘要翻译： 通过提供能够通过在多异氰酸酯化合物的异氰酸酯基团之间形成氨基甲酸酯键来固化的聚氨酯树脂基涂料组合物的保护性外涂层，赋予硅橡胶的按钮开关覆盖部件优异的耐污染沉积和磨损性能 和多羟基化合物的羟基。 在硅橡胶制成的覆盖部件的表面上的涂料组合物的涂布步骤之前是进行等离子体处理，以激活表面，导致硅橡胶体与涂层之间的粘结强度增加。 当用硅烷偶联剂对等离子体激活的表面进行引发处理并且涂层组合物的涂层尽快进行或在等离子体处理完成后的60分钟内进行时，这种改进更加显着。

公开(公告)号：US5888656A

公开(公告)日：1999-03-30

申请号：US600804

申请日：1996-02-13

申请人： Norio Suzuki ,  Toshihiro Nakata

发明人： Norio Suzuki ,  Toshihiro Nakata

IPC分类号： B05D3/06 ,  B05D7/02 ,  B05D7/24 ,  C08J7/00 ,  C08J7/04 ,  C08J7/12 ,  H01H11/00 ,  H01H13/04 ,  B32B25/20

CPC分类号： C08J7/12 ,  C08J7/04 ,  C08J7/123 ,  C08J2383/04 ,  Y10T428/31598

摘要： Proposed is a cured silicone rubber article such as a push button switch covering member having a protective coating layer of a urethane resin-based coating composition having excellent wear resistance against rubbing and capable of giving a dry and rigid touch feeling to the finger tip of the operator of the key tops. The coated silicone rubber article is obtained by subjecting a cured base body of a silicone rubber, prior to the coating with a urethane resin-based coating composition, first to a low temperature plasma treatment and then to a coating treatment with a specific primer composition which is a mixture of an epoxy group-containing organosilane compound and an amino group-containing organosilane compound in a molar mixing ratio in the range from 1:2 to 1:5.

摘要翻译： 提出了一种固化的硅橡胶制品，例如按钮开关覆盖件，具有具有优异的抗摩擦耐磨性的聚氨酯树脂基涂料组合物的保护涂层，并且能够对其指尖施加干燥和刚性的触感 键顶的操作者。 涂覆的硅橡胶制品通过在用氨基甲酸酯树脂基涂料组合物涂覆之前将硅橡胶的固化基体首先进行低温等离子体处理，然后用特定的底漆组合物进行涂布处理， 是含有环氧基的有机硅烷化合物和含氨基的有机硅烷化合物的混合物，其摩尔比为1:2〜1:5。

公开(公告)号：US5580508A

公开(公告)日：1996-12-03

申请号：US395159

申请日：1995-02-27

申请人： Waichi Kobayashi ,  Satoshi Otaka ,  Hideo Uchiyama ,  Toshihiro Nakata ,  Tetsuya Sadatani

发明人： Waichi Kobayashi ,  Satoshi Otaka ,  Hideo Uchiyama ,  Toshihiro Nakata ,  Tetsuya Sadatani

IPC分类号： C04B7/32 ,  C04B22/00 ,  C04B28/18 ,  B29C71/00

CPC分类号： C04B28/188 ,  C04B22/00 ,  C04B26/04 ,  C04B28/18 ,  C04B7/323 ,  Y02W30/94

摘要： A process for preparing calcium silicate articles having a bulk density of 0.3 to 0.9 g/cm.sup.3 including the steps of mixing a major portion of calcium silicate and minor portions of anhydrous calcium aluminosilicate or its analogue, a reinforcing fiber and a polymer binder in water to give an aqueous slurry, molding the slurry into a desired for, and drying the molded slurry at 100.degree.-180.degree. C.

摘要翻译： 一种制备体积密度为0.3至0.9g / cm3的硅酸钙制品的方法，包括以下步骤：将大部分硅酸钙和少部分无水硅铝酸钙或其类似物，增强纤维和聚合物粘合剂在水中混合， 得到含水浆料，将浆料成型为所需的浆料，并在100-180℃干燥模塑浆料。

公开(公告)号：US5804299A

公开(公告)日：1998-09-08

申请号：US625071

申请日：1996-03-29

申请人： Toshihiro Nakata ,  Norio Suzuki

发明人： Toshihiro Nakata ,  Norio Suzuki

IPC分类号： C08J7/04 ,  H01H11/00 ,  H01H13/14 ,  B32B25/20 ,  B32B27/40

CPC分类号： C08J7/047 ,  C08J2383/04 ,  C08J2475/00 ,  Y10T428/263 ,  Y10T428/31598

摘要： A push button switch covering member of a silicone rubber is imparted with excellent resistance against stain deposition and abrasive wearing by providing a protective overcoating layer of a urethane resin-based coating composition capable of being cured by forming urethane linkages between isocyanate groups of a polyisocyanate compound and hydroxy groups of a polyhydroxy compound. The coating procedure with the coating composition on the surface of a silicone rubber-made covering member is preceded by a plasma treatment so as to activate the surface resulting in an increased adhesive bonding strength between the silicone rubber body and the coating layer. The improvement is more remarkable when the plasma-activated surface is subjected to a priming treatment with a silane coupling agent and coating with the coating composition is undertaken as soon as possible or within 60 minutes after completion of the plasma treatment.

摘要翻译： 通过提供能够通过在多异氰酸酯化合物的异氰酸酯基团之间形成氨基甲酸酯键来固化的聚氨酯树脂基涂料组合物的保护性外涂层，赋予硅橡胶的按钮开关覆盖部件优异的耐污染沉积和磨损性能 和多羟基化合物的羟基。 在硅橡胶制成的覆盖部件的表面上的涂料组合物的涂布步骤之前是进行等离子体处理，以激活表面，导致硅橡胶体与涂层之间的粘结强度增加。 当用硅烷偶联剂对等离子体激活的表面进行引发处理并且涂层组合物的涂层尽快进行或在等离子体处理完成后的60分钟内进行时，这种改进更加显着。