公开(公告)号：US5304422A

公开(公告)日：1994-04-19

申请号：US585001

申请日：1990-09-19

申请人： Takayoshi Tanabe ,  Takatoshi Ishigaki ,  Shuji Tsuchikawa ,  Shinichi Kimura

发明人： Takayoshi Tanabe ,  Takatoshi Ishigaki ,  Shuji Tsuchikawa ,  Shinichi Kimura

IPC分类号： C08L23/06 ,  C08L27/18 ,  C08L77/00 ,  C08L77/10 ,  F16C33/20 ,  F16C33/72 ,  C08L69/00 ,  B32B9/00 ,  D02G32/00

CPC分类号： C08L77/00 ,  F16C33/201 ,  C08L23/06 ,  C08L27/18 ,  C08L77/10 ,  Y10S428/902 ,  Y10T428/2964 ,  Y10T428/3154 ,  Y10T428/31562 ,  Y10T428/31725 ,  Y10T428/31855

摘要： A polyamide resin composition comprising: (a) 100 parts by weight of a polyamide; (b) from about 1 part to about 80 parts by weight of an aromatic polyamide fiber; (c) from about 3 parts to about 80 parts by weight of a polytetrafluoroethylene; and (d) from about 1 part to about 20 parts by weight of high-density polyethylene is disclosed. The polyamide resin composition can be molded into sliding members, like bearings, bushings and slide rails, that demonstrate excellent mechanical and physical properties, like low frictional force, low self-abrasion, and low abrasion to metals.

摘要翻译： 一种聚酰胺树脂组合物，其包含：（a）100重量份的聚酰胺; （b）约1份至约80份重量的芳族聚酰胺纤维; （c）约3份至约80份重量的聚四氟乙烯; 和（d）约1份至约20份重量的高密度聚乙烯。 聚酰胺树脂组合物可以模制成诸如轴承，衬套和滑轨的滑动构件，其表现出优异的机械和物理性能，如低摩擦力，低自磨损和对金属的低磨损。

公开(公告)号：US06447868B1

公开(公告)日：2002-09-10

申请号：US09617810

申请日：2000-07-17

申请人： Masayuki Sekiguchi ,  Toshihiro Ohtsuki ,  Takatoshi Ishigaki ,  Tatsuya Hirono

发明人： Masayuki Sekiguchi ,  Toshihiro Ohtsuki ,  Takatoshi Ishigaki ,  Tatsuya Hirono

IPC分类号： B32B302

CPC分类号： G11B7/2538 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2548 ,  G11B7/2585 ,  G11B7/2595 ,  G11B2007/24304 ,  G11B2007/2571 ,  G11B2007/25713 ,  Y10T428/21

摘要： Provided is an optical molding material comprising a cyclic polyolefin resin having a glass transition temperature (Tg) of 120° C. to 170° C., wherein the melt viscosity of the resin at 260° C. is 5,000 to 50,000 poises as measured at a shear rate of 10 sec−1 and 200 to 1,000 poises at a shear rate of 10,000 sec−1, and the melt viscosity of the resin at 320° C. is 500 to 5,000 poises at a shear rate of 10 sec−1 and 100 to 800 poises at a shear rate of 10,000 sec−1. An optical molding material comprising a cyclic polyolefin resin, an optical molded product and an optical disk substrate, wherein a variation range of retardation of the resin is within ±10% of the retardation at 590 nm when the wavelength is changed from 400 nm to 830 nm, are provided. The material is molded into, for example, the optical disk substrate. A method for producing an optical disk substrate comprises injection-molding a thermoplastic resin comprising a cyclic polyolefin resin under conditions of a resin temperature of (Tg+100)° C. to 400° C., a mold temperature of (Tg−100)° C. to (Tg−5)° C., a shear rate of 4×104 to 1×106 sec−1 and average residence time of the resin in a molding machine of 5 to 200 seconds. The cyclic polyolefin resin is preferably composed of a norbornene derivative.

摘要翻译： 提供了一种光学成型材料，其包含玻璃化转变温度（Tg）为120℃至170℃的环状聚烯烃树脂，其中在260℃下树脂的熔体粘度为5000至50,000泊， 在10,000秒-1的剪切速率下的剪切速率为10秒-1和200至1,000泊，而在320℃下的树脂的熔体粘度在10秒-1的剪切速率下为500至5000泊， 100至800泊，剪切速率为10,000秒-1。 一种包含环状聚烯烃树脂，光学模制产品和光盘基片的光学模塑材料，其中当波长从400nm变化到830时，树脂延迟的变化范围在590nm处的延迟的±10％以内 nm。 将该材料成型为例如光盘基板。 制造光盘基板的方法包括在（Tg + 100）℃至400℃的树脂温度，（Tg-100）℃的模具温度条件下，将包含环状聚烯烃树脂的热塑性树脂注塑成型， ℃至（Tg-5）℃，剪切速率为4×10 4至1​​×10 6秒-1，树脂在成型机中的平均停留时间为5至200秒。 环状聚烯烃树脂优选由降冰片烯衍生物构成。