Injection-molded product with superior dimensional precision
    3.
    发明授权
    Injection-molded product with superior dimensional precision 失效
    注塑产品具有优异的尺寸精度

    公开(公告)号:US5153247A

    公开(公告)日:1992-10-06

    申请号:US804533

    申请日:1991-12-11

    摘要: There is disclosed a polycarbonate composition which comprises having a melt flow rate of 5 to 50 g/10 min and composed of:(a) 30 to 65 parts by weight of a thermoplastic aromatic polycarbonate,(b) 70 to 35 parts by weight of glass fibers with an average diameter of 3 to 15 .mu.m, and(c) 0.01 to 15 parts by weight of at least one component selected from the group consisting of (c-1) to (c-3) shown below formulated therein based on 100 parts by weight of the total amount of (a) and (b):(c-1) 0.3 to 10 parts by weight of a brominated polystyrene with an average particle size of 0.1 to 50 .mu.m;(c-2) 0.3 to 10 parts by weight of zinc sulfide with an average particle size of 0.1 to 50 .mu.m; and(c-3) 0.01 to 5 parts by weight of a melamine-cyanuric acid adduct with an average particle size of 0.1 to 50 .mu.m.

    摘要翻译: 公开了一种聚碳酸酯组合物,其熔体流动速率为5至50g / 10min,由以下组成:(a)30至65重量份的热塑性芳族聚碳酸酯,(b)70至35重量份的 平均直径为3〜15μm的玻璃纤维,(c)0.01〜15重量份选自下述(c-1)〜(c-3)所示的至少一种成分, (a)和(b):(c-1)的总量100重量份,0.3〜10重量份平均粒径为0.1〜50μm的溴化聚苯乙烯; (c-2)0.3〜10重量份平均粒径0.1〜50μm的硫化锌; 和(c-3)0.01〜5重量份的平均粒径为0.1〜50μm的三聚氰胺 - 氰尿酸加成物。

    Electrically conductive inorganic filler containing propylene polymer
compositions
    4.
    发明授权
    Electrically conductive inorganic filler containing propylene polymer compositions 失效
    含丙烯聚合物组合物的导电无机填料

    公开(公告)号:US4552689A

    公开(公告)日:1985-11-12

    申请号:US664172

    申请日:1984-10-24

    摘要: An inorganic filler containing propylene polymer composition which comprises 25 to 90% by weight of component (A) and 75 to 10% by weight of component (B):(A) at least one member selected from the group consisting of(a) a crystalline propylene copolymer composed of propylene and one or more other .alpha.-olefins;(b) a composition prepared by blending the copolymer (a) with a synthetic rubber and/or crystalline polypropylene; and(c) a composition prepared by blending a crystalline polypropylene with a synthetic rubber, wherein(1) the amount of xylene extractable soluble component at 23.degree. C. is 10 to 50% by weight, and(2) the propylene content in the extractable soluble component is 30% by weight or more,(B) an inorganic filler having an average particle size of 200.mu. or less, measured by light transmission in a liquid-phase sedimentation system.

    摘要翻译: 一种含有丙烯聚合物组合物的无机填料,其包含25至90重量%的组分(A)和75至10重量%的组分(B):(A)至少一种选自(a) 由丙烯和一种或多种其它α-烯烃组成的结晶丙烯共聚物; (b)通过将共聚物(a)与合成橡胶和/或结晶聚丙烯共混而制备的组合物; 和(c)通过将结晶聚丙烯与合成橡胶混合制备的组合物,其中(1)二甲苯可提取的可溶组分在23℃下的量为10至50重量%,和(2)丙烯含量 可提取可溶成分为30重量%以上,(B)平均粒径为200μm以下的无机填料,通过液相沉降体系中的透光性测定。

    Turntable for mounting recording medium in disk form
    5.
    发明授权
    Turntable for mounting recording medium in disk form 失效
    用于以磁盘形式安装记录介质的转盘

    公开(公告)号:US4841516A

    公开(公告)日:1989-06-20

    申请号:US96484

    申请日:1987-09-15

    IPC分类号: G11B19/20

    CPC分类号: G11B19/2009

    摘要: A turntable comprising a disk-shaped substrate and a portion for receiving a disk-shaped recording medium is disclosed. The disk-shaped substrate is shaped from a thermoplastic composite resin having a dynamic shear modulus, G', of at least 1.5.times.10.sup.10 dyne/cm.sup.2, a G.sub.1 '(-40.degree. C.)/G.sub.2 '(100.degree. C.) ratio of up to 1.5, and a density of up to 2.0 g/cm.sup.3, and the receiving portion is formed on the top of the substrate from a thermoplastic elastomer having a hardness of 5 to 40. The turntable has high dimensional precision and will experience reduced warpage. The turntable is capable of being revolved in a stable manner to ensure an increased precision in reading information. In addition, the turntable has a rapid access time and is capable of attaining a steady speed of revolution in a shorter period of time after the power has been switched on.

    摘要翻译: 公开了一种转盘,包括盘形基板和用于接收盘形记录介质的部分。 盘状基板由具有至少1.5×10 10达因/ cm 2的动态剪切模量G',G1'(-40℃)/ G2'(100℃)比例的热塑性复合树脂成形 高达1.5,密度高达2.0g / cm 3,并且接收部分由硬度为5至40的热塑性弹性体形成在基板的顶部上。转盘具有高尺寸精度并将经历减小 翘曲 转盘能够以稳定的方式旋转,以确保读取信息的精度更高。 此外,转盘具有快速的存取时间,并且能够在电源接通之后在更短的时间内获得稳定的转速。

    Inorganic filler containing propylene polymer compositions
    7.
    发明授权
    Inorganic filler containing propylene polymer compositions 失效
    含丙烯聚合物组合物的无机填料

    公开(公告)号:US4504617A

    公开(公告)日:1985-03-12

    申请号:US418963

    申请日:1982-09-16

    摘要: An inorganic filler containing propylene polymer composition which comprises 25 to 90% by weight of component (A) and 75 to 10% by weight of component (B):(A) at least one member selected from the group consisting of(a) a crystalline propylene copolymer composed of propylene and one or more other .alpha.-olefins;(b) a composition prepared by blending the copolymer (a) with a synthetic rubber and/or crystalline polypropylene; and(c) a composition prepared by blending a crystalline polypropylene with a synthetic rubber, wherein(1) the amount of xylene extractable soluble component at 23.degree. C. is 10 to 50% by weight, and(2) the propylene content in the extractable soluble component is 30% by weight or more,(b) an inorganic filler having an average particle size of 200.mu. or less, measured by light transmission in a liquid-phase sedimentation system.

    摘要翻译: 一种含有丙烯聚合物组合物的无机填料,其包含25至90重量%的组分(A)和75至10重量%的组分(B):(A)至少一种选自(a) 由丙烯和一种或多种其它α-烯烃组成的结晶丙烯共聚物; (b)通过将共聚物(a)与合成橡胶和/或结晶聚丙烯共混而制备的组合物; 和(c)通过将结晶聚丙烯与合成橡胶混合制备的组合物,其中(1)二甲苯可提取的可溶组分在23℃下的量为10至50重量%,和(2)丙烯含量 可萃取的可溶成分为30重量%以上,(b)平均粒径为200μm以下的无机填料,通过液相沉降体系中的透光性测定。

    High inorganic filler content composition
    9.
    发明授权
    High inorganic filler content composition 失效
    高无机填料含量组成

    公开(公告)号:US4153587A

    公开(公告)日:1979-05-08

    申请号:US794612

    申请日:1977-05-06

    申请人: Hiroshi Yui

    发明人: Hiroshi Yui

    摘要: A modified propylene polymer containing mixed polymer composition characterized by high tensile strength, high elongation and good bending stiffness which consists essentially of:A. a crystalline polypropyleneB. a block copolymer wherein a propylene-ethylene random copolymer is chain-terminated onto said crystalline polypropyleneC. a crystalline ethylene-propylene random copolymer having an ethylene content of more than about 90% by weight,The improvement which comprises admixing with said modified propylene polymer at least 30% by weight of an inorganic filler having an average particle size of less than 20.mu. in diameter.

    摘要翻译: 包含混合聚合物组合物的改性丙烯聚合物,其特征在于高拉伸强度,高伸长率和良好的弯曲刚度,其基本上由