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公开(公告)号：US5127079A
公开(公告)日：1992-06-30
申请号：US658869
申请日：1991-02-22
CPC分类号： A61B1/04 , A61B1/00165 , G02B23/26
摘要： An endoscope comprising as an image-transmitting member a multifilament type plastic optical fiber in which 50 to 20,000 islands having a core-sheath structure, a core diameter of 2 to 70 .mu.m and a circular or substantially circular section are arranged in a zigzag-stacked or square-stacked structure in the sea having a circular or substantially circular section, so that the lamination structure of the entire cores has a substantially circular shape in the section of the image-transmitting portion, wherein the same positional relationship of the ends of light-transmitting paths arranged in the section of the optical fiber is maintained on both the ends of the optical fiber, the periphery of the section of the image-transmitting portion of the optical fiber has a circular or substantially circular shape, and an object lens is attached to one end of the image-transmitting member and an image-transmitting light-receiving member is arranged on the other end of the image-transmitting member.
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公开(公告)号：US4742472A
公开(公告)日：1988-05-03
申请号：US725813
申请日：1985-04-22
CPC分类号： C08F2/00 , B01J19/0006 , B01J2219/00063 , B01J2219/00094 , B01J2219/002 , B01J2219/00211 , B01J2219/00213 , B01J2219/00231 , B01J2219/00238
摘要： This invention provides a method and an apparatus for controlling a polymerization reaction. The temperature difference between a target temperature, calculated from the degradation rate of a polymerization initiator, which varies as a function of temperature, and a polymerization reactor temperature is calculated. The difference in polymerization rate between a target polymerization rate previously set and a polymerization rate calculated from a measured heat release value at a certain time in the polymerization process is calculated. The temperature inside the reactor is finely adjusted on the basis of the temperature difference and the difference in polymerization rate.
摘要翻译： 本发明提供了一种控制聚合反应的方法和装置。 计算由聚合引发剂的降解速率计算的目标温度（其随温度变化而变化）与聚合反应器温度之间的温度差。 计算预先设定的目标聚合速度与由聚合过程中的某个时间的测定的热释放值计算的聚合速度之间的聚合速率的差异。 基于温度差和聚合速度差，精细地调节反应器内部的温度。
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3.发明授权
公开(公告)号：US4842365A
公开(公告)日：1989-06-27
申请号：US61346
申请日：1987-06-15
CPC分类号： D01F8/04 , B29D11/00663 , D01D5/36 , G02B6/06
摘要： A multifilament type plastic optical fiber having a substantially rectangular cross-section and an islands-in-the-sea structure in which 100 to 10,000 islands are arranged in the sea, wherein the respective islands have a substantially circular cross-section and a core-sheath structure, the islands are arranged in a sigzag-stacked structure, the core occupancy ratio in the multifilament type optical fiber cores section is at least 50% and the brightness index value I which is defined by the following (1), is at least 4.5.times.10.sup.-2 :I=S.multidot.NA.sup.2 .multidot.10.sup.-(.alpha.L/10) (1)wherein S stands for the core occupancy ratio in the multifilament type optical fiber, .alpha. stands for the transmission loss (db/m) per meter of the multifilament type optical fiber, NA stands for the numeral apertures, and L stands for the length (m) of the used optical fiber.
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公开(公告)号：US4872740A
公开(公告)日：1989-10-10
申请号：US152492
申请日：1988-02-05
CPC分类号： G02B23/26 , A61B1/00165
摘要： An endoscope comprising as an image-transmitting member a multifilament type plastic optical fiber, an object lens arranged on one end of the optical fiber and a device for guiding an image of an object transmitted to the other end of the optical fiber to an image-receiving portion, wherein the multifilament type plastic optical fiber has an islands-in-sea structure in which 50 to 10,000 light-transmitting core-sheath structure islands having a diameter of 5 to 200 .mu. are arranged in the sea so that the same positional relationship of the islands is maintained on both ends of the optical fiber, and the core occupancy ratio in the total cross-section of the optical fiber is at least 50%.
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5.发明授权
公开(公告)号：US5077820A
公开(公告)日：1991-12-31
申请号：US568726
申请日：1990-08-17
IPC分类号： G02B6/06
CPC分类号： G02B6/06
摘要： An optical fiber photoconductor, comprising at least two multi-filament plastic optical fiber units arranged in parallel and having a substantially rectangular peripheral shape and at least one end fixed in a cap, each optical fiber unit having 50 to 10000 core-sheath light-transmitting islands having a diameter of 5 to 200.mu., which are densely arranged in a sea portion, wherein in each of the multi-filament plastic optical fiber units having a rectangular sectional shape, the end face fixed in the cap is expanded so that the length of one side of the end face is at least 1.01 times the original length of one side of the rectangular peripheral shape of the multi-filament plastic optical fiber unit, whereby a bonding interface between the multi-filament plastic optical fiber units substantially disappears.
摘要翻译： 一种光纤光电导体，包括至少两个平行布置的复丝塑料光纤单元，其具有基本上矩形的周边形状和固定在盖中的至少一个端部，每个光纤单元具有50至10000个芯鞘透光 直径为5〜200μm的海岛，其密集地布置在海底部分，其中在每个具有矩形截面形状的复丝塑料光纤单元中，固定在盖中的端面膨胀，使得长度 端面的一侧的长度比复丝塑料光纤单元的矩形周边形状的一侧的原始长度的至少1.01倍，由此，复丝塑料光纤单元之间的接合界面基本上消失。
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公开(公告)号：US4812012A
公开(公告)日：1989-03-14
申请号：US127415
申请日：1987-12-02
IPC分类号： G02B6/06
CPC分类号： G02B6/06
摘要： An optical fiber array comprising a great number of multifilament type plastic optical fibers having a substantially rectangular peripheral sectional shape and including 10 to 10000 light-transmitting islands having a diameter of 5 to 200 .mu.m, which are densely arranged in the sea, wherein one ends of the multifilament type plastic optical fibers are arranged in one line or a plurality of lines and the other ends thereof are integrated in a substantially rectangular or substantially circular shape.
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7.发明授权
公开(公告)号：US5039457A
公开(公告)日：1991-08-13
申请号：US320505
申请日：1989-03-08
CPC分类号： D01F8/04 , B29D11/00663 , D01D5/36 , G02B6/06
摘要： A multifilament type plastic optical fiber having a substantially rectangular cross-section and an islands-in-the-sea structure in which 100 to 10,000 islands are arranged in the sea, wherein the respective islands have a substantially circular cross-section and a core-sheath structure, the islands are arranged in a zigzag-stacked structure, the core occupaney ratio in the multifilament type optical fiber cores section is at least 50% and the brightness index value I which is defined by the following (1), is at least 4.5.times.10.sup.-2 : ##EQU1## wherein S stands for the core occupancy ratio in the multifilament type optical fiber, .alpha. stands for the transmission loss (dB/m) per meter of the multifilament type optical fiber, NA stands for the numeral apertures, and L stands for the length (m) of the used optical fiber.
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公开(公告)号：US4768857A
公开(公告)日：1988-09-06
申请号：US99766
申请日：1987-09-22
CPC分类号： D01F8/04 , B29D11/00663 , D01D5/36 , G02B6/06
摘要： A multifilament type plastic optical fiber having a substantially uniform cross-section and an islands-in-sea structure, in which 10 to 10,000 islands are arranged in the sea, the respective islands have a substantially uniform cross-section having a diameter of 10 to 200.mu. and the sea occupancy ratio in the cross-section of the optical fiber is 5 to 40%, said optical fiber being prepared by constructing a true conjugate spinning spinneret by (a) an orifice plate having 10 to 10,000 core-forming holes, (b) an orifice plate having 10 to 10,000 sheath-forming holes and (c) an orifice plate having 10 to 10,000 sea-forming holes having an opening expanded downward, the lower ends of every two adjacent sea-forming holes having contacted with each other on the lower end face of said orifice plate, so that a fiber comprising the sea and islands having a core-sheath structure is formed by true conjugate spinning without using a filament-gathering orifice plate, supplying a core-forming polymer, a sheath-forming polymer and a sea-forming polymer to respective spinning holes, melt-spinning the polymers under such conditions that the spinning draft D defined by the following formula [I]:D=(hole diameter of core-forming orifice plate).sup.2 /(corediameter of multifilament optical fiber).sup.2 . . . [I] is 20 to 50,000, fusion-bonding the spun filaments on the lower end face of the spinneret, and taking up the formed fiber.
摘要翻译： 一种具有基本均匀的横截面和海岛结构的复丝型塑料光纤，其中在海中布置有10至10,000个岛，各个岛具有基本上均匀的横截面，其直径为10至 200微米，光纤横截面的占有率为5〜40％，所述光纤通过（a）具有10〜10000个芯形成孔的孔板构成真正的共轭纺丝喷丝头， （b）具有10至10,000个鞘形成孔的孔板和（c）具有10至10,000个海孔形成孔的孔板，其具有向下扩展的开口，每两个相邻海成孔的下端与每个 另一方面在所述孔板的下端面上，使得通过真正的共轭纺丝形成包含海岛和具有芯鞘结构的岛的纤维，而不使用丝聚集孔板，提供芯形聚合物 r，成鞘聚合物和形成海藻的聚合物分散到相应的纺丝孔中，在由下式[I]定义的纺丝线D的条件下熔融纺丝聚合物：D =（芯形成孔的孔直径 板）2 /（复丝光纤的纤芯直径）2。 。 。 [I]为20〜50,000，在喷丝头的下端面上熔融纺丝，并卷取成形纤维。
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公开(公告)号：US4609540A
公开(公告)日：1986-09-02
申请号：US733797
申请日：1985-05-14
摘要： A process for producing a carbon fiber having a tenacity of 450 kg/mm.sup.2 or more, preferably 500 kg/mm.sup.2 or more, and a modulus of elasticity of 25 ton/mm.sup.2 or more which comprises subjecting a polyacrylonitrile-type fiber to a flame-resisting treatment in a flame-resisting treatment furnace provided with a plural number of driving rolls in an oxidizing atmosphere at 200.degree. to 400.degree. C. under application of multistep elongation, during said treatment the respective percentage of elongation in said multistep elongation being set respectively at a value which is equal to or within .+-.3% of the value of the percentage of elongation En indicating an inflection point Pn obtainable from the load and the percentage of elongation determined in advance by experimental measurements, and then subjecting the treated fiber to carbonization.
摘要翻译： 制造强度为450kg / mm2以上，优选为500kg / mm2以上的弹性模量为25ton / mm 2以上的碳纤维的制造方法，其特征在于，将聚丙烯腈型纤维进行阻燃处理， 在施加多段伸长的情况下，在200-400℃的氧化气氛中在具有多个驱动辊的阻燃处理炉中进行耐蚀处理，在所述处理期间分别设定所述多段伸长率的相应百分率 在等于或者在表示从负载得到的拐点Pn的伸长百分比En的值的±3％的值，以及通过实验测量预先确定的伸长百分比之后，然后对经处理的纤维 碳化。
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10.发明授权Unsaturated polyester composition for molding compound and coated molded article thereof 失效用于模塑复合物的不饱和聚酯组合物和其涂覆的模制品
公开(公告)号：US4245059A
公开(公告)日：1981-01-13
申请号：US956335
申请日：1978-10-31
IPC分类号： C08F299/04 , C08L67/06
CPC分类号： C08F299/0478
摘要： An unsaturated polyester composition for molding compounds, consisting essentially of (1) 20 to 70 parts by weight of an unsaturated polyester obtained by condensing an acid component comprising a major amount of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid with a polyol, (2) 25 to 75 parts by weight of a vinyl monomer copolymerizable with said unsaturated polyester, (3) 1 to 25 parts by weight of a thermoplastic polymer, and (4) at least one member selected from the group consisting of hydroxyl-containing vinyl monomers and epoxy-containing vinyl monomers in a ratio of 1 to 40 parts by weight to 100 parts by weight of said unsaturated polyester (to form 100 parts by weight of the composition). The composition may be molded and cured to yield articles which provide good adhesion to surface coatings and are susceptible of decorative finishes.
摘要翻译： 一种用于模塑化合物的不饱和聚酯组合物，其基本上由（1）20至70重量份通过将包含主要量的α，β-烯键式不饱和二羧酸的酸组分与多元醇缩合获得的不饱和聚酯，（2 ）25〜75重量份可与所述不饱和聚酯共聚的乙烯基单体，（3）1〜25重量份的热塑性聚合物，和（4）至少一种选自含羟基的乙烯基单体 和含环氧基的乙烯基单体相对于100重量份的所述不饱和聚酯为1至40重量份（以形成100重量份的组合物）。 组合物可以被模制和固化以产生对表面涂层提供良好粘附性并且易于进行装饰性表面处理的制品。
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