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    • 3. 发明授权
    • Polyester pellets
    • 聚酯颗粒
    • US06320014B1
    • 2001-11-20
    • US09256088
    • 1999-02-24
    • Koji TakahashiKoji NakamachiHiroji NiimiShoji HiraokaMasayuki SakaiHitoshi Tsuboi
    • Koji TakahashiKoji NakamachiHiroji NiimiShoji HiraokaMasayuki SakaiHitoshi Tsuboi
    • C08G6318
    • C08G63/80C08G63/672
    • Disclosed are polyester pellets made of a polyester which comprises dicarboxylic acid constituent units derived from dicarboxylic acids containing terephthalic acid and isophthalic acid and diol constituent units derived from diols containing ethylene glycol and 1,3-bis(2-hydroxyethoxy)benzene, and which has the properties: constituent units derived from terephthalic acid are 15 to 99.5% by mol and constituent units derived from isophthalic acid are 0.5 to 85% by mol, both based on the total amount of dicarboxylic acid isophthalic acid constituent units (i); constituent units derived from ethylene glycol are 25 to 99.5% by mol and constituent units derived from 1,3-bis(2-hydroxyethoxy)benzene are 0.5 to 75% by mol, both based on the total amount of the diol constituent units (ii); the intrinsic viscosity is in the range of 0.5 to 1.5 dl/g; and the melting point (Tm (°C.)), as measured by a differential scanning calorimeter, satisfies the formula [1/527−0.0017·ln(1−(mI+mB)/200)]−1−273
    • 公开了由聚酯制成的聚酯粒料,其包含衍生自含有对苯二甲酸和间苯二甲酸的二羧酸的二羧酸结构单元和源自含有乙二醇和1,3-双(2-羟基乙氧基)苯的二醇的二醇结构单元, 性质:由对苯二甲酸衍生的结构单元为15〜99.5摩尔%,来自间苯二甲酸的构成单元为二烷基间苯二甲酸成分单元(i)的总量为0.5〜85摩尔%。 衍生自乙二醇的构成单元为25〜99.5摩尔%,来自1,3-双(2-羟基乙氧基)苯的构成单元为0.5〜75摩尔%,均基于二醇构成单元(ii ); 特性粘度在0.5〜1.5dl / g的范围内; 通过差示扫描量热计测定的熔点(Tm(℃))满足公式[1 / 527-0.0017.ln(1-(mI + mB)/ 200)]〜1-273
    • 9. 发明授权
    • Method for producing a pellet from a fiber-filled resin composition and injection-molded products thereof
    • 从纤维填充树脂组合物及其注射成型体制造颗粒的方法
    • US07641833B2
    • 2010-01-05
    • US10594679
    • 2005-04-12
    • Kei AokiMasayuki SakaiKazufumi Watanabe
    • Kei AokiMasayuki SakaiKazufumi Watanabe
    • B29C47/60B29B7/24
    • B29B9/14B29B7/90B29C47/1081B29C47/6025B29C47/6031B29C47/6037B29C47/6056B29C2947/9218B29C2947/92704
    • An object of the present invention is to economically produce a resin composition pellet with the degradation of resin suppressed, by using an ordinary extruder, the resin composition pellet being filled with a desired filling amount of a uniformly compounded fibrous filler, and having a required weight average fiber length, in particular, to produce a resin composition pellet used for a socket of a planar socket pin in which the pitch interval of a lattice area of a semiconductor device is 2.0 mm or less, the thickness of the lattice area is 0.5 mm or less, and the height of the socket is 5.0 mm or less. To achieve the object, in supplying 80 to 55% by weight of resin and 20 to 45% by weight of the fibrous filler with a weight average fiber length of 1 mm or more to an extruder to produce a resin composition pellet in which a weight average fiber length of a fibrous filler is 180 to 360 μm, a part of an amount (x) of the resin is supplied through a main feed port of the extruder, and the fibrous filler and a remaining amount (1−x) of the resin are supplied through a side-feed port so that x/(1−x) becomes 50/50 to 10/90% by weight.
    • 本发明的目的是通过使用普通的挤出机经济地生产树脂降解降解的树脂组合物颗粒,所述树脂组合物颗粒填充有所需的填充量的均匀复合的纤维填料并具有所需的重量 平均纤维长度,特别是为了制造用于平面插座销的插座的树脂组合物颗粒,其中半导体器件的晶格面积的间距间隔为2.0mm或更小,晶格面积的厚度为0.5mm 以下,插座的高度为5.0mm以下。 为了达到上述目的,向挤出机中供给80〜55重量%的树脂和20〜45重量%的重均纤维长度为1mm以上的纤维填料,制成树脂组合物颗粒,其中重量 纤维填料的平均纤维长度为180〜360μm,树脂的量(x)的一部分通过挤出机的主供料口供给,纤维填料的剩余量(1-x) 树脂通过侧进料口供给,使得x /(1-x)成为50/50至10/90重量%。