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公开(公告)号：US4631334A
公开(公告)日：1986-12-23
申请号：US721604
申请日：1985-04-10
IPC分类号： C08G64/04 , C08G64/14 , C08L69/00 , G11B7/2534 , C08G63/62
CPC分类号： G11B7/2534 , C08G64/04 , C08G64/14 , C08L69/00
摘要： A transparent optical article is disclosed, which is produced by molding a branched polycarbonate resin having a viscosity average molecular weight of from 13,000 to 20,000 as prepared from at least one dihydric phenol compound in the presence of a polyfunctional organic compound having at least two phenolic hydroxyl groups as a branching agent in an amount of from 0.02 to 3 mol % based on the total amount of the dihydric phenol compound. The transparent molded optical article includes digital audio discs, video discs, memory discs and lenses used in the optical reading system. The optical article is greatly reduced in double refraction and has a high mechanical strength.
摘要翻译： 公开了一种透明光学制品，其通过在具有至少两个酚羟基的多官能有机化合物的存在下，通过模制由至少一种二元酚化合物制备的粘均分子量为13,000至20,000的支化聚碳酸酯树脂 基团的二元酚化合物的总量为0.02〜3摩尔％的支化剂。 透明模制光学制品包括在光学读取系统中使用的数字音频盘，视频盘，存储盘和透镜。 光学制品在双折射下大大降低，机械强度高。
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公开(公告)号：US5676896A
公开(公告)日：1997-10-14
申请号：US704258
申请日：1996-08-28
CPC分类号： B29C45/14811 , B29C45/14467 , B29C45/561 , B29C2045/14532 , B29C2045/5635
摘要： A process for the production of a molded article having a surface including a sealed pattern by an injection compression molding method, which comprises placing a substrate (thickness: X (mm)) having a pattern on the front surface thereof in a cavity of a mold with the reverse surface of the substrate in contact with a cavity wall of the mold, injecting a molten thermoplastic resin into a space surrounded by cavity walls and the front surface of the substrate, and thereby forming a resin layer (thickness: Y (mm)) on the front surface of the substrate to form a molded article having the pattern sealed with the resin layer and having a thickness of 1 to 6 mm (=X+Y (mm)), wherein: a distance (Z+Y (mm)) of the space in the molded article thickness direction is set to satisfy the following relationships when the substrate is placed in the cavity of the mold, when Y is in the range of 0.3.ltoreq.Y
摘要翻译： 一种通过注射压缩成型方法制造具有包括密封图案的表面的模制品的方法，包括将其表面上具有图案的基材（厚度：X（mm））放置在模具的空腔中 使基板的反面与模具的腔壁接触，将熔融的热塑性树脂注入到由空腔壁和基板的前表面包围的空间中，从而形成树脂层（厚度：Y（mm） ），以形成具有用树脂层密封并且具有1至6mm（= X + Y（mm））的厚度的图案的模制品，其中：距离（Z + Y（mm） 当Y在0.3
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公开(公告)号：US5902534A
公开(公告)日：1999-05-11
申请号：US523554
申请日：1995-09-05
CPC分类号： B29C45/1679 , B29C37/0028
摘要： A method of injection-molding a thermoplastic resin, which involves the steps of(a) injecting a molten resin of a thermoplastic resin into a cavity provided in a mold composed of a fixed mold member and a movable mold member,(b) introducing a predetermined amount of a coating material into between the resin in the cavity and the cavity wall after the injection of the molten resin is completed, to allow the resin in the cavity to be compressed with the introduced coating material and/or to allow the movable mold member to move in the mold-opening direction, and(c) maintaining a molding pressure before the mold releasing at a level higher than 0 kgf/cm.sup.2.
摘要翻译： （a）将热塑性树脂的熔融树脂注入设置在由固定模具构件和可动模具构成的模具中的空腔中的步骤，（b）引入热塑性树脂的注塑成型方法， 完成在注射熔融树脂之后在空腔中的树脂和空腔壁之间的预定量的涂料进入到空腔中的树脂被引入的涂层材料压缩和/或允许活动模具 构件在开模方向上移动，以及（c）在脱模之前将成型压力保持在高于0kgf / cm 2的水平。
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公开(公告)号：US5073313A
公开(公告)日：1991-12-17
申请号：US557236
申请日：1990-07-25
CPC分类号： B29C47/0845 , B29C45/60 , B29C45/62 , B29C47/0011
摘要： A process for producing a polycarbonate molded article having a low dust level from a polycarbonate resin in the form of a powder or pellets by injection molding using an injection molding machine. The injection molding machine includes a cylinder whose inner circumferential wall is made of a corrosion- and abrasion-resistant alloy from alloy components (1), (2), or (3) given below and a screw part made of a steel having a metal coating formed of hard chromium plating or hard nickel plating or formed of titanium carbide or tungsten carbide, or is made of SUS420, SUS440, Hastelloy C, or a steel of alloy component (4) given below:Alloy components (1):C: 0.5-1.5 wt%Si: 1.0-2.0 wt%B: 0.5-2.5 wt%Ni: 10.0-20.0 wt%Cr: 20.0-30.0 wt%W: 10.0-20.0 wt%Cu: 0.5-2.0 wt%Remainder: Co and unavoidable impurities,Alloy components (2):Ni: 0.0-2.0 wt%Cr: 5.0-15.0 wt%Fe: 0.0-1.0 wt%Mn: 0.1-2.0 wt%Si: 0.2-4.0 wt%B: 2.0-4.0 wt%Remainder: Co and unavoidable impurities,Alloy components (3):Cr: 5.0-10.0 wt%Co: 5.0-40.0 wt%Fe: 0.0-10.1 wt%Mn: 0.2-2.0 wt%Si: 2.0-10.0 wt%B: 2.0-4.0 wt%Reaminder: Ni and unavoidable impurities,Alloy components (4):C: 0.5-1.5 wt%Cr: 10.0-20.0 wt%Mo: 1.5-2.5 wt%V: 0.5-1.5 wt%Remainder: Fe and unavoidable impurities.
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