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公开(公告)号：US06225414B1
公开(公告)日：2001-05-01
申请号：US08868539
申请日：1997-06-04
IPC分类号： C08F29708
CPC分类号： C08F297/083 , C08F210/16 , C08F2/001 , C08F2/34
摘要： A polypropylene block copolymer obtained by producing an ethylene-propylene copolymer moiety as a component A having an ethylene content of 1.5 to 6.0% by weight in an amount of 40 to 85% by weight based on the total weight of components A and B in the absence of an inert solvent, substantially, in a first step, with a Ziegler-Natta catalyst, and then producing an ethylene-propylene copolymer moiety as a component B having an ethylene content of 7 to 17% by weight in an amount of 15 to 60% by weight based on an amount of the whole polymer in a gas phase in a second step, wherein an intrinsic viscosity ([&eegr;]B) of the component B is from 2.0 to 5.0 dl/g and the ratio of the intrinsic viscosity ([&eegr;]B) of the component B to an intrinsic viscosity ([&eegr;]A) of the component A is within the range of 0.5 to 1.8.
摘要翻译： 一种聚丙烯嵌段共聚物，它通过以乙烯 - 丙烯共聚物部分作为组分A生产乙烯含量为基于A组分和B组分总重量的40至85重量％的重量百分数为1.5至6.0重量％ 基本上不用惰性溶剂，在第一步中，用齐格勒 - 纳塔催化剂，然后制备乙烯 - 丙烯共聚物部分作为组分B，其乙烯含量为7至17重量％，用量为15至 60重量％，基于第二工序中的气相中的全部聚合物的量，其中，成分B的特性粘度（ηB）为2.0〜5.0dl / g，特性粘度 组分B的（ηB）与组分A的特性粘度（ηA）在0.5至1.8的范围内。
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公开(公告)号：US6117946A
公开(公告)日：2000-09-12
申请号：US123576
申请日：1998-07-28
IPC分类号： C08F297/06 , C08F297/08 , C08L23/16
CPC分类号： C08F297/08 , C08F297/06
摘要： A propylene block copolymer having a specified composition and consisting of a xylene soluble portion at 20.degree. C. in an amount of 5 wt % or more and a portion excluding the CXS portion, the melting temperature of the CXIS portion measured by a differential scanning caloriemeter being 130 to 155.degree. C., wherein the difference in transparency in terms of haze between prior to and posterior to the 1-hour treatment at 110.degree. C of a 150 .mu.m thick film obtained by forming said copolymer into a film by extrusion is 8% or less.According to the present invention, a block copolymer having a good transparency and improved impact resistance at a low temperature, and further exhibiting less bleeding at high-temperature heat treatment, can be provided.
摘要翻译： 具有特定组成的丙烯嵌段共聚物，其组成为20℃下的二甲苯可溶部分，其量为5重量％以上，除了CXS部分以外的部分，通过差示扫描温度计测量的CXIS部分的熔融温度 为130〜155℃，其中通过将所述共聚物通过挤出形成所述共聚物获得的150μm厚的薄膜在110℃下1小时处理之前和之后的浊度方面的透明度差异是 8％以下。 根据本发明，可以提供在低温下具有良好的透明性和改善的耐冲击性的嵌段共聚物，并且在高温热处理中进一步显示较少的渗色。
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公开(公告)号：US5654372A
公开(公告)日：1997-08-05
申请号：US611759
申请日：1996-03-08
IPC分类号： C08F297/08 , C08L53/00
CPC分类号： C08L53/00 , C08F297/083
摘要： A polypropylene composition comprising a melt-kneaded polyprolylene composition obtained, using Zieglar-Natta catalyst, by polymerizing a monomer comprising propylene to form a polymer comprising polypropylene (component A) in amount of from 60 to 80% by weight to the total polymer amount in substantially the absence of an inert solvent in a 1st step and then polymerizing a mixture of ethylene content of from 20 to 50% by weight (component B) in a vapor phase to form an ethylene-propylene copolymer (component B) in amount of from 20 to 40% by weight to the total polymer amount in a 2nd step, said polypropylene composition being such that the intrinsic viscosity of component B ([.eta.]B) is at least 2.0 dl/g and the ratio ([.eta.]B/[.eta.]A) of the intrinsic viscosity of the component B to the intrinsic viscosity of the component A ([.eta.]A) is 1.8 or less and the melt flow rate of the polypropylene composition after melt-kneaded being 0.5 to 10 g/10 minutes.
摘要翻译： 一种聚丙烯组合物，其包含使用齐格列酮 - 纳塔催化剂获得的熔融捏合的聚亚甲基组合物，其通过使包含丙烯的单体聚合以形成聚丙烯（组分A）的聚合物，其量为聚合物总量的60至80重量％ 基本上在第一步骤中不存在惰性溶剂，然后在气相中聚合乙烯含量为20至50重量％（组分B）的混合物以形成乙烯 - 丙烯共聚物（组分B），其量为 在第二步中相对于总聚合物量为20至40重量％，所述聚丙烯组合物使得组分B（ηB）的特性粘度为至少2.0dl / g，并且比率（ηB / 组分B的特性粘度与组分A（ηA）的特性粘度之比为1.8以下，熔融混炼后的聚丙烯组合物的熔体流动速率为0.5〜10g / 10分钟。
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公开(公告)号：US06451936B1
公开(公告)日：2002-09-17
申请号：US08465515
申请日：1995-06-05
IPC分类号： C08F458
CPC分类号： C08J5/18 , C08F10/00 , C08F210/06 , C08J2323/10 , C08F4/6465 , C08F210/16 , C08F2500/17 , C08F2500/12 , C08F2500/26 , C08F210/08
摘要： A polypropylene random copolymer obtained by copolymerizing propylene and an &agr;-olefin or propylene, ethylene, and &agr;-olefin using a Ziegler-Natta catalyst substantially in the absence of solvent, wherein propylene content is from 92.3 to 75.0% by weight, the ethylene content (E) is from 0 to 2.7% by weight, and the &agr;-olefin content is from 5.0 to 25.0% by weight, and wherein the content (C) of 20° C. xylene-soluble components in the random copolymer satisfies following formulae (1) to (3); in the copolymer wherein the ethylene content (E) is less than 1.5% by weight, C≦12.0 (weight %) (1) in the copolymer wherein the ethylene content (E) is from 1.5% by weight to 1.8% by weight, C≦42.0−20.0×E (weight %) (2) and in the copolymer wherein the ethylene content (E) is from 1.8% by weight to 2.7% by weight, C≦6.0 (weight %) (3).
摘要翻译： 通过使用基本上不存在溶剂的齐格勒 - 纳塔催化剂共聚丙烯和α-烯烃或丙烯，乙烯和α-烯烃得到的聚丙烯无规共聚物，其中丙烯含量为92.3〜75.0重量％，乙烯含量 （E）为0〜2.7重量％，α-烯烃含量为5.0〜25.0重量％，无规共聚物中20℃二甲苯可溶成分的含量（C）满足下式 （1）〜（3）所示的共聚物中，乙烯含量（E）为1.5重量％〜1.8重量％的共聚物中，乙烯含量（E）小于1.5重量％ 其中乙烯含量（E）为1.8重量％至2.7重量％的共聚物，
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公开(公告)号：US06624247B2
公开(公告)日：2003-09-23
申请号：US09901608
申请日：2001-07-11
申请人： Takanori Kume , Shigeki Kishiro , Eisuke Shiratani
发明人： Takanori Kume , Shigeki Kishiro , Eisuke Shiratani
IPC分类号： C08L2300
CPC分类号： C08L23/10 , C08F297/08 , C08J5/18 , C08J2323/10 , C08L23/14 , C08L23/142 , C08L53/00 , C08L2666/04 , C09D153/00 , C09J153/00 , C08L2666/24
摘要： A polypropylene-based resin film of a resin composition (C) comprising: 40 to 95 wt % of a propylene-based copolymer (A) selected from a propylene random copolymer (i) of propylene with ethylene and/or &agr;-olefin and a propylene-based copolymer (ii) composed of 1 to 30 wt % of a component (a) obtained by copolymerizing propylene, an &agr;-olefin and ethylene in a first step; and 70 to 99 wt % of a component (b) obtained by copolymerizing those in the subsequent step, in which the copolymerization ratio is different from that in the first step; and 5 to 60 wt % of a polypropylene-ethylene and/or &agr;-olefin block copolymer (B) having a CXS of 5.0 wt % or more, wherein the CXS has a content of ethylene and/or the &agr;-olefin of 14 to 35 mol %, and wherein the heat-seal temperature of the film of the (C) is lower by 3° C. or more than those of respective films of the (A) and (B).
摘要翻译： 1.一种树脂组合物（C）的聚丙烯系树脂膜，其包含：40〜95重量％的丙烯与丙烯与/或α-烯烃的丙烯无规共聚物（i）中的丙烯类共聚物（A）和 丙烯系共聚物（ⅱ），由1〜30重量％的第1工序中的丙烯，α-烯烃，乙烯共聚得到的成分（a） 和70〜99重量％的通过与后续步骤中的共聚合得到的组分（b），其中共聚比与第一步不同; 和5-60重量％的CXS为5.0重量％或更多的聚丙烯 - 乙烯和/或α-烯烃嵌段共聚物（B），其中CXS的含量为乙烯和/或α-烯烃的14至35 （C）的膜的热封温度比（A）和（B）的各膜的温度低3℃以上。
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公开(公告)号：US5340878A
公开(公告)日：1994-08-23
申请号：US79558
申请日：1993-06-22
CPC分类号： C08L23/10 , C08L23/142 , C08L23/06
摘要： A polypropylene composition comprising 100 parts by weight of a crystalline propylene polymer having a melt flow rate of at least 3.0 g/10 minutes and a molecular weight distribution of less than 5.0 and from 0.01 to less than 4.0 parts by weight of a crystalline ethylene polymer having a melt flow rate of from 0.5 to 300 g/10 minutes, a density of at least 0.910 g/cm.sup.3, and a crystallization temperature of at least 85.degree. C. and which is at least 1.degree. C. higher than the crystallization temperature of the crystalline propylene polymer.
摘要翻译： 一种聚丙烯组合物，其包含100重量份的熔体流动速率为至少3.0g / 10分钟，分子量分布小于5.0和0.01至小于4.0重量份结晶乙烯聚合物的结晶丙烯聚合物 熔体流动速率为0.5-300g / 10分钟，密度至少为0.910g / cm3，结晶温度至少为85℃，比结晶温度高至少1℃ 的结晶丙烯聚合物。
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7.发明授权Pulse generator stabilized for change of ambient temperature and source voltage 失效稳定的脉冲发生器可以改变环境温度和电源电压
公开(公告)号：US3967216A
公开(公告)日：1976-06-29
申请号：US564635
申请日：1975-04-02
IPC分类号： H03K3/0231 , H03K4/06 , H03K4/501 , H03K4/50
摘要： A pulse generator which can be applied to a horizontal deflection circuit and/or a vertical deflection circuit of a television set and of which almost all parts can be easily manufactured in a single IC (Integrated Circuit) chip has been found. A capacitor in an integrator circuit is charged and discharged alternately. The voltage across said capacitor and a second voltage, which is controlled by said voltage across said capacitor, are compared with a predetermined voltage. According to the result of the comparison, the capacitor is charged or discharged and, thus, a pulse oscillation is provided.
摘要翻译： 已经发现可以应用于电视机的水平偏转电路和/或垂直偏转电路并且几乎所有部件都可以容易地在单个IC（集成电路）芯片中制造的脉冲发生器。 积分电路中的电容器交替地充电和放电。 将所述电容器两端的电压和由所述电容器两端的电压控制的第二电压与预定电压进行比较。 根据比较的结果，电容器被充电或放电，从而提供脉冲振荡。
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公开(公告)号：US6117553A
公开(公告)日：2000-09-12
申请号：US964334
申请日：1997-11-04
CPC分类号： C08J5/18 , B32B27/08 , C08L51/06 , C08L53/00 , C08J2323/08 , C08J2323/14 , C08J2325/04 , C08J2333/12 , C08J2353/00 , C08J2367/00 , C08J2377/00
摘要： There is provided a self-tack wrapping film comprising a non-oriented multi-layer film of a chlorine-free resin, which is regulated in (a) tensile breaking elongation at a longitudinal direction, (b) ratio of a tensile breaking elongation at a transverse direction to the tensile breaking elongation at a longitudinal direction, (c) tensile breaking load at a longitudinal direction (LLD), (d) ratio of the tensile breaking load at a longitudinal direction to a tensile breaking load at a transverse direction, (e) tensile modulus at a longitudinal direction and that at a transverse direction, (f) tackiness, (g) heat resistant temperature and (h) respective thermal shrinkage percents at longitudinal and transverse directions, to a predetermined range, which wrapping film has improved tackiness, heat resistance, microwave oven suitability and "saw blade" cutting characteristics, and appropriate flexibility.
摘要翻译： 提供了一种自粘包装膜，其包含无取向多层膜的无氯树脂，其被调节为（a）纵向的拉伸断裂伸长率，（b）拉伸断裂伸长率 （c）纵向拉伸断裂载荷（LLD）的横向，（d）纵向拉伸断裂载荷与横向拉伸断裂载荷的比例， （e）纵向上的拉伸模量和横向的拉伸模量，（f）粘合性，（g）耐热温度和（h）纵向和横向各自的热收缩百分比达到预定范围，该包装膜具有 改进的粘性，耐热性，微波炉适用性和“锯片”切割特性，以及适当的灵活性。
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公开(公告)号：US3956661A
公开(公告)日：1976-05-11
申请号：US521544
申请日：1974-11-06
CPC分类号： G05F1/567 , G05F3/225 , Y10S323/907
摘要： An improved D. C. power source whose output voltage is independent of changes in temperature is disclosed. Compensation for changes in temperature is established by three features. For a change of the voltage drop in the forward direction between the base and the emitter of a transistor, a plurality of diodes provided in a bias circuit in the transistor are utilizied; for a change of the current amplification factor .beta. of a transistor, an additional transistor is attached to the transistor, and; for a change of the value of an emitter resistor connected between the emitter of the transistor and the ground, an external stable resistor is utilized. The D. C. power source of the present invention is, in particular, useful for an integrated circuit.
摘要翻译： 公开了一种改进的D.C电源，其输出电压与温度变化无关。 温度变化补偿由三个特征确定。 为了改变晶体管的基极和发射极之间的正向电压降，利用设置在晶体管中的偏置电路中的多个二极管; 为了改变晶体管的电流放大因子β，附加的晶体管连接到晶体管， 为了改变连接在晶体管的发射极和地之间的发射极电阻的值，使用外部稳定电阻器。 本发明的D.C电源尤其适用于集成电路。
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公开(公告)号：US6033775A
公开(公告)日：2000-03-07
申请号：US980456
申请日：1997-11-28
CPC分类号： C08L53/00 , B32B27/32 , C08F297/083 , C08L23/02 , Y10S428/91 , Y10T428/2826 , Y10T428/31913 , Y10T428/31928
摘要： A film containing a first layer containing a propylene-based block copolymer (a) obtainable by forming 40 to 85% by weight of a propylene-ethylene copolymer portion (A) having a content of repeating unit derived from ethylene of 1.5 to 6.0% by weight in a first step, and then forming 15 to 60% by weight of a propylene-ethylene copolymer portion (B) having a content of repeating unit derived from ethylene of 7 to 17% by weight in a second step, the intrinsic viscosity of portion (B) being 2 to 5 dl/g, and the ratio of the intrinsic viscosity of portion (B) to the intrinsic viscosity of portion (A) being 0.5 to 1.8, and a second layer containing a polyethylene type resin (b) laminated on at least one surface of the first layer, has a good balance between heat resistance, flexibility, mechanical strength, transparency, cuttability, original-shape resuming property and other desirable properties, and is suitably used for wrapping materials such as foods.
摘要翻译： 含有含有丙烯类嵌段共聚物（a）的第一层的膜可以通过将由乙烯衍生的重复单元的含量为1.5〜6.0％的丙烯 - 乙烯共聚物部分（A）的40〜85重量％ 重量，然后在第二步中形成15至60重量％的由乙烯重复单元含量为7至17重量％的丙烯 - 乙烯共聚物部分（B）的特性粘度 部分（B）为2〜5dl / g，部分（B）的特性粘度与部分（A）的特性粘度的比例为0.5〜1.8，第二层含有聚乙烯型树脂（b） 层压在第一层的至少一个表面上，在耐热性，柔韧性，机械强度，透明性，可切割性，原始形状恢复性能和其它期望的性能之间具有良好的平衡，并且适合用于包装食品等材料。
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