Process for separating and drying thermoplastic particles under high pressure
    3.
    发明申请
    Process for separating and drying thermoplastic particles under high pressure 有权
    在高压下分离和干燥热塑性颗粒的方法

    公开(公告)号:US20060042113A1

    公开(公告)日:2006-03-02

    申请号:US11134946

    申请日:2005-05-23

    IPC分类号: F26B17/24 F26B17/30

    摘要: A process for feeding a slurry of thermoplastic synthetic polymer particles such as polyethylene terephthalate homopolymers and copolymers in combination with a liquid such as water at a liquid temperature greater than the normal boiling point of the liquid, under a pressure greater than the vapor pressure of the liquid at the liquid temperature, into a separation zone such as a centrifugal dryer, and within the separation zone: a. separating the liquid from the particles, and b. drying the particles; while under a high pressure equal to or greater than the vapor pressure of the liquid. There is also provided a process for decoupling the dried particles from the separation zone to an atmosphere having a pressure less than the vapor pressure of the liquid while maintaining the vapor pressure of the particles prior to decoupling equal to or above the vapor pressure of the liquid at the liquid temperature.

    摘要翻译: 在大于所述液体的蒸汽压的压力下,在大于所述液体的标准沸点的液体温度下,将诸如聚对苯二甲酸乙二醇酯均聚物和共聚物的热塑性合成聚合物颗粒的浆料与液体如水混合的方法, 液体在液体温度下进入分离区如离心干燥器,并在分离区内:a。 将液体与颗粒分离,b。 干燥颗粒; 同时在等于或大于液体的蒸气压的高压下。 还提供了一种将干燥颗粒从分离区分离到具有低于液体的蒸气压力的气氛的气氛的过程,同时在解耦之前保持颗粒的蒸气压等于或高于液体的蒸气压 在液体温度下。

    High IV melt phase polyester polymer catalyzed with antimony containing compounds
    5.
    发明申请
    High IV melt phase polyester polymer catalyzed with antimony containing compounds 有权
    用含锑化合物催化的高IV熔融相聚酯聚合物

    公开(公告)号:US20060149027A1

    公开(公告)日:2006-07-06

    申请号:US11361655

    申请日:2006-02-24

    IPC分类号: C08G63/87

    摘要: A melt phase process for making a polyester polymer melt phase product by adding an antimony containing catalyst to the melt phase, polycondensing the melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g. Polyester polymer melt phase pellets containing antimony residues and having an It.V. of at least 0.75 dL/g are obtained without solid state polymerization. The polyester polymer pellets containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization are fed to an extruder, melted to produce a molten polyester polymer, and extruded through a die to form shaped articles. The melt phase products and articles made thereby have low b* color and/or high L* brightness, and the reaction time to make the melt phase products is short.

    摘要翻译: 一种用于通过向熔融相中加入含锑催化剂来制备聚酯聚合物熔融相产物的熔融相方法,将熔融相中包含所述催化剂的熔体缩聚至It.V. 的熔体达到至少0.75dL / g。 含有锑残留物并具有It.V.的聚酯聚合物熔相颗粒 在没有固态聚合的情况下获得至少0.75dL / g。 含有锑残留物并具有It.V.的聚酯聚合物颗粒 通过固态聚合而不增加熔融相产物的分子量而获得的至少0.70dL / g进料到挤出机中,熔化以产生熔融聚酯聚合物,并通过模头挤出以形成成型制品。 由此制得的熔融相产物和制品具有低的b *色和/或高L *亮度,并且使熔融相产物的反应时间短。

    High IV melt phase polyester polymer catalyzed with antimony containing compounds

    公开(公告)号:US20060149026A1

    公开(公告)日:2006-07-06

    申请号:US11361487

    申请日:2006-02-24

    IPC分类号: C08G63/87

    摘要: A melt phase process for making a polyester polymer melt phase product by adding an antimony containing catalyst to the melt phase, polycondensing the melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g. Polyester polymer melt phase pellets containing antimony residues and having an It.V. of at least 0.75 dL/g are obtained without solid state polymerization. The polyester polymer pellets containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization are fed to an extruder, melted to produce a molten polyester polymer, and extruded through a die to form shaped articles. The melt phase products and articles made thereby have low b* color and/or high L* brightness, and the reaction time to make the melt phase products is short.

    Spheroidal polyester polymer particles
    7.
    发明申请
    Spheroidal polyester polymer particles 审中-公开
    球状聚酯聚合物颗粒

    公开(公告)号:US20060047102A1

    公开(公告)日:2006-03-02

    申请号:US11018357

    申请日:2004-12-21

    IPC分类号: C08G63/02

    摘要: Spheroidal polyester polymer particles, as well as preforms and stretch blow molded bottles made from the spheroidal particles, are provided which have: A) an It.V. of at least 0.72 dL/g, and either B) at least two melting peaks (on a DSC first heating scan), wherein one of said at least two melting peaks is a low peak melting point having a peak temperature within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g, or C) a low degree of crystallinity within a range of at least 20% and a maximum degree of crystallinity Tcmax defined by the equation: Tcmax=50%−CA−OH where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues in the polyester polymer, and OH is the total mole % of hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of the hydroxyl functional compounds residues; or both B) and C); and optionally but preferably D) 10 ppm or less of residual acetaldehyde.

    摘要翻译: 提供球形聚酯聚合物颗粒,以及由球形颗粒制成的预成型件和拉伸吹塑瓶,其具有:A)It.V. 至少0.72dL / g,和B)至少两个熔融峰(在DSC第一次加热扫描上),其中所述至少两个熔融峰中的一个是具有峰值温度在140℃范围内的低峰值熔点 具有至少绝对值为1J / g的熔融吸热面积,或C)在至少20%的范围内的低结晶度和最大结晶度T < 由以下等式定义的SUB> cmax :<?in-line-formula description =“In-line formula”end =“lead”?> Taxaxax = 50%-CA-OH <?in-line-formula description =“In-line Formulas”end =“tail”?>其中CA是除对苯二甲酸残基之外的所有羧酸残基的总摩尔%,基于100摩尔%的羧酸残基 基于100摩尔%的羟基官能化合物残基,聚酯聚合物和OH是除乙二醇残基之外的羟基官能化合物残基的总摩尔%; 或B)和C); 和任选但优选D)10ppm或更少的残留乙醛。

    Thermal crystallization of polyester pellets in liquid
    9.
    发明申请
    Thermal crystallization of polyester pellets in liquid 有权
    聚酯颗粒在液体中的热结晶

    公开(公告)号:US20050065318A1

    公开(公告)日:2005-03-24

    申请号:US10665664

    申请日:2003-09-18

    摘要: A process for thermally crystallizing a polyester polymer by introducing pellets into a liquid medium having a temperature of at least 140° C. within a liquid medium zone and crystallizing the submerged pellets at or above the vapor pressure of the liquid medium without increasing the molecular weight of the pellets, and while the pressure on at least a portion of the pellets is equal to or greater than the vapor pressure of the liquid medium, separating at least a portion of said pellets and at least a portion of the liquid medium from each other. The crystallization is desirably conducted in the liquid medium zone without mechanically induced agitation. Optionally, the pellets are formed by an underfluid pelletizer. There is also provided a process for thermally crystallizing solid pellets in a pipe by directing a flow of solid pellets in a liquid medium through a pipe having an aspect ratio L/D of at least 50:1, wherein the solid pellets are crystallized in the pipe at a liquid medium temperature greater than the Tg of the polyester polymer.

    摘要翻译: 将聚合物聚合物引入到液体介质区内的温度至少为140℃的液体介质中并使液体介质的蒸气压以上或高于液体介质的蒸气压使其结晶的方法使聚酯聚合物热结晶,而不增加分子量 并且当至少一部分颗粒的压力等于或大于液体介质的蒸气压时,将至少一部分所述颗粒和液体介质的至少一部分彼此分离 。 结晶期望在液体介质区域中进行,而不会机械诱导搅拌。 任选地,颗粒由底流体造粒机形成。 还提供了一种通过将纵横比为L / D至少为50:1的管引导固体颗粒在液体介质中的流动使管中的固体颗粒热结晶的方法,其中固体颗粒在 在液体介质温度下的管道大于聚酯聚合物的Tg。

    Spheroidal polyester polymer particles

    公开(公告)号:US20060235188A1

    公开(公告)日:2006-10-19

    申请号:US11454271

    申请日:2006-06-16

    IPC分类号: C08G63/02

    摘要: Spheroidal polyester polymer particles, as well as preforms and stretch blow molded bottles made from the spheroidal particles, are provided which have: A) an It.V. of at least 0.72 dL/g, and either B) at least two melting peaks (on a DSC first heating scan), wherein one of said at least two melting peaks is a low peak melting point having a peak temperature within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g, or C) a low degree of crystallinity within a range of at least 20% and a maximum degree of crystallinity Tcmax defined by the equation: Tcmax=50%−CA−OH where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues in the polyester polymer, and OH is the total mole % of hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of the hydroxyl functional compounds residues; or both B) and C); and optionally but preferably D) 10 ppm or less of residual acetaldehyde.