Process for production of polyester
    1.
    发明授权
    Process for production of polyester 失效
    涤纶生产工艺

    公开(公告)号:US4440924A

    公开(公告)日:1984-04-03

    申请号:US532624

    申请日:1983-09-15

    IPC分类号: C08G63/82 C08G63/87 C08G63/30

    CPC分类号: C08G63/87 C08G63/826

    摘要: A process for production of a polyester comprising units of ethylene terephthalate as the major repeating units by supplying terephthalic acid and ethylene glycol continuously or intermittently to bis(beta-hydroxyethyl) terephthalate or its oligomer so as to carry out esterification under a pressure of not more than about 1.0 kg/cm.sup.2, followed by polycondensation, which is characterized in that at least one magnesium compound is incorporated into the reaction system in an amount of about 30 to 400 ppm in terms of Mg to the polyester when the esterification rate in the step of esterification reaches about 20-80% and at least one phosphorus compound is incorporated into the reaction system in an amount as satisfying the following equation (I) at the stage after the esterification rate reaches not less than about 91% and before the termination of the initial condensation in the step of esterification:1.2.ltoreq.Mg/P.ltoreq.20 (I)wherein Mg/P is the atomic ratio of the magnesium atom to the phosphorus atom. The produced polyester shows a high electrostatic adherence.

    摘要翻译: 一种通过连续或间歇地向双(β-羟乙基)对苯二甲酸酯或其低聚物供应对苯二甲酸和乙二醇作为主要重复单元的聚对苯二甲酸乙二醇酯单元的生产方法,以在不超过一个压力下进行酯化 约1.0kg / cm 2,然后进行缩聚,其特征在于当步骤中的酯化速率在聚酯中时,至少一种镁化合物以约30-400ppm的量掺入反应体系中 的酯化达到约20-80%,并且在酯化速率达到不低于约91%之后且在终止之前的阶段,至少一种磷化合物以满足以下等式(I)的量引入反应体系中 在酯化步骤中的初始缩合:1.2 Mg / P 20(I)其中Mg / P是镁原子与磷酸根的原子比 原子 所生产的聚酯显示出高的静电附着力。

    Polyester composition
    2.
    发明授权
    Polyester composition 失效
    聚酯组成

    公开(公告)号:US4604453A

    公开(公告)日:1986-08-05

    申请号:US714996

    申请日:1985-03-22

    摘要: A polyester having an initial accumulation electric charge of not less than 2.9 .mu.c/mm.sup.2 when determined in a melt state according to the method as hereinabove defined and a heat resistance of not more than 0.210 when determined according to the method as hereinabove defined, which comprises at least one magnesium compound and at least one phosphorus compound solubilized therein in amounts as satisfying the following formulas:30.ltoreq.[Mg].ltoreq.400 (1)0.8.ltoreq.Mg/P.ltoreq.3 (2)wherein [Mg] is the content (ppm) of the magnesium compound in terms of magnesium atom to the polyester and Mg/P is the atomic ratio of the magnesium atom in the magnesium compound to the phosphorus atom in the phosphorus compound.

    摘要翻译: 当根据上述方法在熔融状态下测定时,具有不小于2.9μc/ mm 2的初始蓄电量的聚酯,并且当根据上述方法测定时耐热性不大于0.210, 包含至少一种镁化合物和至少一种溶解在其中的磷化合物,其量满足下式:30 [Mg]≤400(1)0.8

    Process for preparing polyamide film
    8.
    发明授权
    Process for preparing polyamide film 失效
    制备聚酰胺薄膜的方法

    公开(公告)号:US5000889A

    公开(公告)日:1991-03-19

    申请号:US489030

    申请日:1990-03-06

    IPC分类号: B29C47/00 B29C47/88 B29C55/00

    摘要: A process for preparing a polyamide type film which comprises melt-extruding a polyamide resin having a metal compound and a melt specific resistance of not more than 1.5.times.10.sup.5 .OMEGA.cm at 260.degree. C. in a form of a film, contacting the melt-extruded film closely with a revolving cooling drum through static electricity and taking up the film while cooling rapidly to solidify, which provides remarkable improved adhesion by static electricity. As a result, increasing the take-up rate of the revolving cooling drum does not cause trapping of air between the drum and the film so that a film having excellent uniformity in thickness and transparency can be produced.

    摘要翻译: 一种制备聚酰胺型膜的方法,该方法包括在260℃熔融挤出具有金属化合物的聚酰胺树脂和熔体电阻率不超过1.5×10 5欧姆厘米的薄膜形式,使熔融挤出 通过静电与旋转冷却滚筒紧密接触,并在快速冷却下固化时吸收薄膜,这提供了显着改善的静电附着力。 结果,提高旋转冷却鼓的卷绕速度不会导致鼓和膜之间的空气的捕获,从而可以产生具有优异的厚度和透明度均匀性的膜。

    METHOD FOR PRODUCING THERMOPLASTIC POLYESTER ELASTOMER, THERMOPLASTIC POLYESTER ELASTOMER COMPOSITION, AND THERMOPLASTIC POLYESTER ELASTOMER
    9.
    发明申请
    METHOD FOR PRODUCING THERMOPLASTIC POLYESTER ELASTOMER, THERMOPLASTIC POLYESTER ELASTOMER COMPOSITION, AND THERMOPLASTIC POLYESTER ELASTOMER 有权
    生产热塑性聚酯弹性体的方法,热塑性聚酯弹性体组合物和热塑性聚酯弹性体

    公开(公告)号:US20090203871A1

    公开(公告)日:2009-08-13

    申请号:US12158231

    申请日:2006-12-15

    IPC分类号: C08G63/56

    CPC分类号: C08G63/64 C08G63/914

    摘要: The present invention provides a thermoplastic polyester elastomer excellent in heat resistance, heat-aging resistance, water resistance, light resistance, low-temperature property and the like, and further excellent in block order-retaining ability, the thermoplastic polyester elastomer comprising a hard segment which comprises polyester constituted with aromatic dicarboxylic acid and aliphatic or alicyclic diol and a soft segment which comprises mainly aliphatic polycarbonate, wherein the hard segment and the soft segment being connected, and wherein when melting points of the thermoplastic polyester elastomer are obtained by measuring on a differential scanning calorimeter in three cycles in which a temperature is raised from room temperature to 300° C. at a heating rate of 20° C./min., maintained at 300° C. for 3 minutes and lowered to room temperature at a cooling rate of 100° C./min., a melting point difference (Tm1−Tm3) between a melting point obtained in the first cycle (Tm1) and a melting point obtained in the third cycle (Tm3) is 0-50° C., and a tensile strength at break is 15-100 MPa.

    摘要翻译: 本发明提供一种耐热性,耐热老化性,耐水性,耐光性,低温性等优异的热塑性聚酯弹性体,并且具有优异的嵌段顺序保持能力,热塑性聚酯弹性体包含硬链段 其包含由芳族二羧酸和脂族或脂环族二醇构成的聚酯和主要包含脂肪族聚碳酸酯的软链段,其中所述硬链段和所述软链段连接,并且其中当所述热塑性聚酯弹性体的熔点通过 差示扫描量热计在三个循环中,其中温度以20℃/分钟的升温速度从室温升至300℃,保持在300℃3分钟,并在冷却下降至室温 速率为100℃/分钟,在第一周期获得的熔点(Tm)之间的熔点差(Tm1-Tm3) 1),在第3循环(Tm3)中得到的熔点为0〜50℃,断裂拉伸强度为15〜100MPa。