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    • 1. 发明授权
    • Thermoplastic resin composition and injection-molded article thereof
    • 热塑性树脂组合物及其注模制品
    • US06593409B2
    • 2003-07-15
    • US09842074
    • 2001-04-26
    • Kenichi OhkawaMoriyasu ShimojoShin-ichi Kondo
    • Kenichi OhkawaMoriyasu ShimojoShin-ichi Kondo
    • C08K330
    • C08L23/10C08L23/0815C08L53/00C08L53/02C08L2205/02C08L2666/04C08L2666/24
    • A thermoplastic resin composition comprising: (A) polypropylene-based resin selected from the group consisting of a propylene homopolymer, an ethylene-propylene block copolymer composed of a propylene homopolymer portion and ethylene-propylene random copolymer portion having an intrinsic viscosity measured in tetralin at 135° C. of 1.0 or more and less than 8.0 dl/g and a mixture thereof, of 35 to 85 wt %; (B) elastomer of 10 to 35 wt %; (C) inorganic filler of 2 to 30 wt %; and (D) resin of 0.1 wt % or more and less than 5 wt %, wherein (1) the melt tension of (D) at 190° C. and a winding rate of 15.7 m/min. is 0.1 N or more, (2) the swelling ratio of (D) at 220° C., an L/D ratio of an orifice of 40 and a shear rate of 1.2×103 sec−1 is 1.8 or more, and (3) the time required until the ratio (G(t)/G(0.02)) of the relaxation modulus G(t) at 210° C. to that G(0.02) in a time of 0.02 sec. reaches 0.01, of (D) is 10 sec. or more.
    • 一种热塑性树脂组合物,其包含:(A)选自丙烯均聚物,由丙烯均聚物部分组成的乙烯 - 丙烯嵌段共聚物和在四氢化萘中测定的特性粘度的乙烯 - 丙烯无规共聚物部分的聚丙烯基树脂 135℃以上且小于8.0dl / g及其混合物,为35〜85重量%;(B)10〜35重量%的弹性体;(C)2〜30重量%的无机填料; 和(D)树脂为0.1重量%以上且小于5重量%,其中(1)(D)在190℃下的熔体张力和15.7m / min的卷绕速率。 为0.1N以上,(2)(D)在220℃下的溶胀比,孔的L / D比为40,剪切速度为1.2×10 3秒-1为1.8以上,(3) )在0.02秒时,在210℃下的松弛模量G(t)与该G(0.02)的比率(G(t)/ G(0.02))所需的时间为0.02秒。 达到0.01,(D)为10秒。 或者更多。
    • 2. 发明授权
    • Polymer blend compositions based on isotactic polypropylene homopolymer and injected molded articles thereof
    • 基于全同立构聚丙烯均聚物的聚合物共混组合物及其注射成型制品
    • US06306972B1
    • 2001-10-23
    • US09079222
    • 1998-05-15
    • Kenichi OhkawaShin-ichi KondoMoriyasu Shimojo
    • Kenichi OhkawaShin-ichi KondoMoriyasu Shimojo
    • C01L2310
    • C08L23/12C08L23/16C08L53/00C08L53/02C08L2666/24
    • A polypropylene-based resin composition comprising: (1) 95 to 50% by weight of a polypropylene-based resin (A) of a mixture of the following (i) and (ii); (i) a crystalline propylene-ethylene block copolymer comprising a propylene homopolymer portion as a first segment and a propylene-ethylene random copolymer as a second segment, said propylene-ethylene block copolymer having a melt flow rate at 230° C. measured according to JIS-K-6758 of not less than 25 g/10 min., and (ii) a crystalline propylene homopolymer having a melt flow rate at 230° C. measured according to JIS-K-6758 of not less than 70 g/10 min.; (2) 5 to 20% by weight of at least one rubber (B) selected from the following rubbers (a) and (b); (a) an ethylene-&agr;-olefin copolymer rubber, (b) an alkenyl aromatic compound-containing rubber; and (3) 0 to 30% by weight of talc (C) having an average particle diameter of not more than 3 &mgr;m, the total amount of (A), (B) and (C) being 100% by weight, wherein said polypropylene-based resin composition satisfies the following expression: 0.05≦{(A)′/[(A)′+(a′)+(b′)]}≦0.20 in which (A)′ represents an amount of the second segment in the polypropylene-based resin composition, (a′) represents an amount of the ethylene-&agr;-olefin copolymer rubber in the polypropylene-based resin composition, and (b′) represents an amount of the alkenyl aromatic compound-containing rubber in the polypropylene-based resin composition, and wherein the melt flow rate at 230° C. measured according to JIS-K-6758 of said polypropylene-based resin composition is not less than 35 g/ 10 min. and the flexural modulus at 23° C. is not less than 8000 kg/cm2.
    • 一种聚丙烯类树脂组合物,其特征在于,含有:(1)95〜50重量%的下述(i)和(ii)的混合物的聚丙烯类树脂(A);(i)结晶性丙烯 - 乙烯嵌段共聚物 包括作为第一链段的丙烯均聚物部分和作为第二链段的丙烯 - 乙烯无规共聚物,所述丙烯 - 乙烯嵌段共聚物根据JIS-K-6758测量的熔体流动速率为230℃,不小于25 g / 10分钟,和(ii)根据JIS-K-6758测量的熔体流动速率在230℃下的结晶丙烯均聚物不小于70g / 10min;(2)5至20% 至少一种选自以下橡胶(a)和(b)的橡胶(B);(a)乙烯-α-烯烃共聚物橡胶,(b)含烯基芳族化合物的橡胶; 和(3)0〜30重量%的平均粒径不大于3μm的滑石(C),(A),(B)和(C)的总量为100重量%,其中所述 聚丙烯类树脂组合物满足以下表达式:其中(A)'表示聚丙烯类树脂组合物中第二链段的量,(a')表示聚丙烯中的乙烯-α-烯烃共聚物橡胶的量 和(b')表示聚丙烯类树脂组合物中的含有链烯基芳香族化合物的橡胶的量,其中根据JIS-K-6758测定的在230℃下的熔融流动速率为所述聚丙烯 基树脂组合物不小于35g / 10min。 23℃下的弯曲弹性模量不小于8000kg / cm2。
    • 6. 发明授权
    • Thermoplastic resin composition and its injection molded article
    • 热塑性树脂组合物及其注塑制品
    • US07351760B2
    • 2008-04-01
    • US10694724
    • 2003-10-29
    • Kenichi OhkawaMoriyasu Shimojo
    • Kenichi OhkawaMoriyasu Shimojo
    • C08K3/30
    • C08L23/10C08L23/0815C08L53/00C08L2666/06
    • The present invention provides a thermoplastic resin composition including specific amounts of (A) a polypropylene resin, (B) an elastomer, (C) inorganic filler, (D) a resin having a melt tension of 0.1 N or more and a swelling ratio of 1.8 or more and being characterized by that the time required for the resin until the ratio (G(t)/G(0.02)) of a relaxation modulus G(t) measured at 210° C. to a relaxation modulus G(0.02) at a time of 0.02 sec reaches 0.01 is 10 sec or more, and (E) a resin characterized by that, with respect to a swelling ratio measured at 220° C. at an L/D of an orifice of 40, the ratio of a swelling ratio (SR103) at a shear rate of 2.4×103 sec−1 to a swelling ratio (SR102) at a shear rate of 1.2×102 sec−1, SR103/SR102, is from 1.0 to 1.1.
    • 本发明提供一种热塑性树脂组合物,其含有(A)聚丙烯树脂,(B)弹性体,(C)无机填料,(D)熔融张力为0.1N以上的树脂和 1.8以上,其特征在于,在210℃下测定的松弛模量G(t)与松弛模量G(0.02)之间的比例(G(t)/ G(0.02))为止, 在0.02秒达到0.01时为10秒以上,(E)树脂的特征在于,对于在孔40的L / D下在220℃下测量的溶胀比, 在2.4×10 -3秒-1的剪切速率下,溶胀比(SR10> 3)与溶胀比(SR10 < / SUP>),剪切速率为1.2×10 2秒-1,SR 10 3 / SR 10 2, 从1.0到1.1。