Process for producing aromatic polyesters having an increased degree of
polymerization
    5.
    发明授权
    Process for producing aromatic polyesters having an increased degree of polymerization 失效
    具有增加聚合度的芳族聚酯的制备方法

    公开(公告)号:US4331800A

    公开(公告)日:1982-05-25

    申请号:US144036

    申请日:1980-04-28

    IPC分类号: C08G69/44 C08G63/68

    CPC分类号: C08G69/44

    摘要: A process for producing an aromatic polyester having an increased degree of polymerization, which comprises reacting a substantially linear, fiber forming aromatic polyester containing terminal hydroxyl groups and having an aromatic dicarboxylic acid as a main acid component at an elevated temperature with a bis-cyclic imino ether compound of the formula [I] such as 2,2'-bis(2-oxazoline), 2,2'-bis(5,6-dihydro-4H-1,3-oxadine) thereby bonding the molecular chains of the aromatic polyester to each other by the terminal carboxyl groups thereof to rapidly form said aromatic polyester having an increased degree of polymerization.Said reaction can be carried out under atmospheric or elevated pressure.According to the process, an aromatic polyester having a low terminal caboxyl concentration and an increased degree of polymerization can be obtained.

    摘要翻译: 一种具有增加聚合度的芳族聚酯的制备方法,该方法包括使具有末端羟基并且具有芳族二羧酸作为主要酸成分的基本上直链的形成纤维的芳族聚酯在升高的温度下与双环亚氨基 醚化合物,如2,2'-双(2-恶唑啉),2,2'-双(5,6-二氢-4H-1,3-恶嗪等),由此将分子链 芳族聚酯通过其末端羧基彼此之间,以快速形成具有增加的聚合度的所述芳族聚酯。 所述反应可以在大气压或高压下进行。 根据该方法,可以得到具有低端甲氧基浓度和增加聚合度的芳族聚酯。

    Cured aromatic polyester composition and process for its production
    6.
    发明授权
    Cured aromatic polyester composition and process for its production 失效
    固化芳香族聚酯组合物及其生产工艺

    公开(公告)号:US4196066A

    公开(公告)日:1980-04-01

    申请号:US920834

    申请日:1978-06-30

    摘要: A cured or uncured linear aromatic polyester composition melt-blended and composed of(A) 100 parts by weight of a saturated linear aromatic polyester in which at least 70 mole % of the acid component consists of an aromatic dicarboxylic acid, and(B) 0.1 to 50 parts by weight of a reactive compound which is solid at room temperature or is a liquid having a boiling point of at least 200.degree. C. under atmospheric pressure, and which contains in its molecule at least one aliphatic unsaturated group substantially non-reactive with the polyester (A) and the aliphatic unsaturated group of the reactive compound (B) under conditions of melt-blending with the polyester (A) and at least one epoxy group reactive with the polyester (A) under the melt-blending conditions. The cured linear aromatic polyester composition can be prepared by extruding the uncured linear aromatic polyester composition under melting conditions, and subjecting the resulting extrudate to a curing treatment.

    摘要翻译: 固化或未固化的线性芳族聚酯组合物熔融共混并由(A)100重量份的饱和直链芳族聚酯组成,其中至少70摩尔%的酸组分由芳族二羧酸组成,和(B)0.1 至50重量份在室温下为固体的反应性化合物或在大气压下为沸点为至少200℃的液体,并且其在其分子中含有至少一个基本上不反应的脂族不饱和基团 与聚酯(A)的熔融共混条件下的聚酯(A)和反应性化合物(B)的脂肪族不饱和基团和至少一种与聚酯(A)反应的环氧基团在熔融共混条件下进行。 固化的线性芳族聚酯组合物可以通过在熔融条件下挤出未固化的线性芳族聚酯组合物并将所得挤出物进行固化处理来制备。

    Method of designing a semiconductor device
    7.
    发明授权
    Method of designing a semiconductor device 失效
    设计半导体器件的方法

    公开(公告)号:US06949387B2

    公开(公告)日:2005-09-27

    申请号:US10626718

    申请日:2003-07-25

    摘要: A technique for a semiconductor device is provided that includes forming circuit regions on a device formation region and device isolation regions on a semiconductor substrate, a ratio of the width of a device isolation region to the width of adjacent circuit regions thereto is set at 2 to 50. A design method is also provided and includes conducting measurements such as of thicknesses of a pad oxide film and a nitride film, the internal stress of the nitride film, the width of both device formation and isolation regions, the depth of the etched portion of the nitride film for forming the groove in a device isolation region, conducting stress analysis in the proximity of the groove due to thermal oxidation, and setting values pertaining to the width of the device formation region and of the device isolation region which do not lead to occurrence of dislocation.

    摘要翻译: 提供了一种半导体器件的技术,其包括在器件形成区域上形成电路区域和半导体衬底上的器件隔离区域,器件隔离区域的宽度与其相邻电路区域的宽度的比率被设置为2至 还提供了一种设计方法,包括进行测量,例如衬垫氧化膜和氮化物膜的厚度,氮化物膜的内部应力,器件形成和隔离区域的宽度,蚀刻部分的深度 的用于在器件隔离区域中形成沟槽的氮化物膜,由于热氧化而在沟槽附近进行导电应力分析,以及与器件形成区域的宽度和不引导的器件隔离区域的设定值 发生脱位。

    Semiconductor device having circuit element in stress gradient region by
film for isolation and method of manufacturing the same
    10.
    发明授权
    Semiconductor device having circuit element in stress gradient region by film for isolation and method of manufacturing the same 失效
    具有用于隔离膜的应力梯度区域中的电路元件的半导体器件及其制造方法

    公开(公告)号:US5889312A

    公开(公告)日:1999-03-30

    申请号:US890997

    申请日:1997-07-10

    CPC分类号: H01L21/76202 H01L27/0802

    摘要: A semiconductor device includes a thermal oxide film for isolation, a semiconductor region that becomes an element forming region with the circumference thereof surrounded by the oxide film and diffused resistance layers in the semiconductor region and provides a structure for controlling resistance value variation of diffused resistors originated in a stress generated at time of forming the oxide film for isolation. A distance between an end portion on a longer side closest to a thermal oxide film of the diffused layer and an end of the thermal oxide film is apart from each other by a predetermined value determined by stress distribution in the semiconductor region or by at least 4 .mu.m or more, the longitudinal direction of the diffused layer portion formed from the end of the thermal oxide film over to a stress distribution (gradient) forming region in the semiconductor region is parallel to the forming direction of the stress gradient, and resistance value distribution is formed parallel to the stress gradient in the diffused layer formed from the end of the thermal oxide film over to the stress distribution forming region in the semiconductor region.

    摘要翻译: 半导体器件包括用于隔离的热氧化膜,半导体区域,其成为元件形成区域,其周边被半导体区域中的氧化物膜和扩散电阻层包围,并且提供用于控制起始的扩散电阻器的电阻值变化的结构 在形成用于隔离的氧化膜时产生的应力。 最靠近扩散层的热氧化膜的较长侧的端部与热氧化膜的端部之间的距离彼此分开由半导体区域中的应力分布确定的预定值或至少4 从热氧化膜的端部到半导体区域的应力分布(梯度)形成区域形成的扩散层部的纵向方向平行于应力梯度的形成方向,电阻值 分布形成为平行于从热氧化膜的端部到半导体区域中的应力分布形成区域形成的扩散层中的应力梯度。