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    Process for producing elastomeric acetal polymers
    2.
    发明授权
    Process for producing elastomeric acetal polymers 失效
    生产弹性体缩醛聚合物的方法

    公开(公告)号：US4937312A

    公开(公告)日：1990-06-26

    申请号：US448746

    申请日：1989-12-11

    申请人： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

    发明人： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

    IPC分类号： C08G2/18

    CPC分类号： C08G2/18

    摘要： There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g., p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.

    摘要翻译： 提供了约15至45摩尔％，优选约25至35摩尔％三恶烷，约55至85摩尔％，优选约65至75摩尔％的1,3-二氧戊环的新的弹性体共聚物，所述摩尔百分比基于 三恶烷和1,3-二氧戊环的总量，以及约0.005至0.15wt。 ％，优选约0.05至0.12wt。 ％的1,4-丁二醇二缩水甘油醚或丁二烯二环氧化物作为双功能单体，基于共聚物的总重量。 弹性体共聚物可以通过将基本上干燥的状态和惰性气氛下的所述单体与阳离子聚合催化剂如对硝基苯基氮鎓四氟硼酸盐混合来制备。 弹性体共聚物与包含至少85摩尔％的聚合甲醛单元的可模塑的结晶缩醛聚合物具有强相互作用，并且可以用作与这种结晶缩醛聚合物或粘合剂的共混剂，以改善结晶缩醛聚合物的粘合性 到其他材料。

    Extrusion grade polyethylene terephthalate
    3.
    发明授权
    Extrusion grade polyethylene terephthalate 失效
    挤出级聚对苯二甲酸乙二醇酯

    公开(公告)号：US4219527A

    公开(公告)日：1980-08-26

    申请号：US956532

    申请日：1978-10-31

    申请人： Robert Edelman ,  Frank M. Berardinelli ,  Kurt F. Wissbrun

    发明人： Robert Edelman ,  Frank M. Berardinelli ,  Kurt F. Wissbrun

    IPC分类号： B29C49/00 ,  C08G63/20 ,  B29C17/07

    CPC分类号： C08G63/20 ,  B29C49/0005

    摘要： A process is disclosed for modifying polyethylene terephthalate so that the polyethylene terephthalate may be processed into plastic containers using conventional extrusion blow molding equipment. The polyethylene terephthalate is modified by the incorporation into a polyethylene terephthalate prepolymer of a chain branching agent and a chain terminating agent. The prepolymer is subsequently solid-state polymerized to form a polyethylene terephthalate polymer having high zero shear rate melt viscosity and shear sensitivity. This modified polyethylene terephthalate polymer may be extrusion blow molded in intermittent and continuous processes.

    摘要翻译： 公开了一种用于改性聚对苯二甲酸乙二醇酯的方法，使得聚对苯二甲酸乙二醇酯可以使用常规挤出吹塑设备加工成塑料容 聚对苯二甲酸乙二醇酯通过掺入链支化剂和链终止剂的聚对苯二甲酸乙二醇酯预聚物中进行改性。 随后将预聚物固态聚合以形成具有高零剪切速率熔融粘度和剪切敏感性的聚对苯二甲酸乙二醇酯聚合物。 该改性的聚对苯二甲酸乙二醇酯聚合物可以以间歇和连续的方法挤出吹塑成型。

    Extrusion grade polyethylene terephthalate
    4.
    发明授权
    Extrusion grade polyethylene terephthalate 失效
    挤出级聚对苯二甲酸乙二醇酯

    公开(公告)号：US4161579A

    公开(公告)日：1979-07-17

    申请号：US894674

    申请日：1978-04-10

    申请人： Robert Edelman ,  Frank M. Berardinelli ,  Kurt F. Wissbrun

    发明人： Robert Edelman ,  Frank M. Berardinelli ,  Kurt F. Wissbrun

    IPC分类号： C08G63/00 ,  C08G63/12 ,  C08G63/20 ,  C08G63/682 ,  C08G63/685 ,  C08G63/78 ,  C08G63/80 ,  C08G63/76 ,  C08G63/70

    CPC分类号： C08G63/80 ,  C08G63/20

    摘要： A process is disclosed for modifying polyethylene terephthalate so that the polyethylene terephthalate may be processed into plastic containers using conventional extrusion blow molding equipment. The polyethylene terephthalate is modified by the incorporation into a polyethylene terephthalate prepolymer of a chain branching agent and a chain terminating agent. The prepolymer is subsequently solid-state polymerized to form a polyethylene terephthalate polymer having high zero shear rate melt viscosity and shear sensitivity. This modified polyethylene terephthalate polymer may be extrusion blow molded in intermittent and continuous processes.

    摘要翻译： 公开了一种用于改性聚对苯二甲酸乙二醇酯的方法，使得聚对苯二甲酸乙二醇酯可以使用常规挤出吹塑设备加工成塑料容 聚对苯二甲酸乙二醇酯通过掺入链支化剂和链终止剂的聚对苯二甲酸乙二醇酯预聚物中进行改性。 随后将预聚物固态聚合以形成具有高零剪切速率熔融粘度和剪切敏感性的聚对苯二甲酸乙二醇酯聚合物。 该改性的聚对苯二甲酸乙二醇酯聚合物可以以间歇和连续的方法挤出吹塑成型。

    Elastomeric acetal polymers
    6.
    发明授权
    Elastomeric acetal polymers 失效
    弹性缩醛聚合物

    公开(公告)号：US4898925A

    公开(公告)日：1990-02-06

    申请号：US243381

    申请日：1988-09-12

    申请人： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

    发明人： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

    IPC分类号： C08G2/22 ,  C08G2/18

    CPC分类号： C08G2/18

    摘要： There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g, p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.

    Processing of melt processible liquid crystal polymer by control of thermal history
    7.
    发明授权
    Processing of melt processible liquid crystal polymer by control of thermal history 失效
    通过控制热历史处理熔融加工液晶聚合物

    公开(公告)号：US4325903A

    公开(公告)日：1982-04-20

    申请号：US169012

    申请日：1980-07-15

    申请人： Kurt F. Wissbrun ,  Yoshiaki Ide

    发明人： Kurt F. Wissbrun ,  Yoshiaki Ide

    IPC分类号： B29B7/00 ,  B29C47/00 ,  B29C47/78 ,  B29C47/80 ,  B29K67/00 ,  C08J3/18 ,  D01D1/09 ,  D01F6/62 ,  D01F6/74 ,  D01F6/84 ,  B28B3/20

    CPC分类号： D01F6/84 ,  B29C47/0004 ,  B29C47/788 ,  B29C47/822 ,  D01D1/09 ,  D01F6/74 ,  B29C47/0014 ,  B29C47/0021 ,  B29K2105/0079

    摘要： A process for the extrusion of melt processable liquid crystal polymer which provides improved processability characteristics is provided. The process comprises the steps of subjecting the liquid crystal polymer to an elevated temperature between the DSC transition temperature and the degradation temperature of the polymer; cooling the liquid crystal polymer to a processing temperature which is between the DSC transition temperature and the elevated temperature and at which the liquid crystal polymer is less subject to degradation than at the elevated temperature; and extruding the liquid crystal polymer into the form of a shaped article having mechanical properties which are improved over those of articles formed from liquid crystal polymer which has not been subjected to the elevated temperature. Preferably, the liquid crystal polymer exhibits at the elevated temperature a reduction by at least a factor of 5 in the melt viscosity of the liquid crystal polymer, as compared to the melt viscosity at the DSC transition temperature, without significant degradation of the liquid crystal polymer. The reduction in melt viscosity is substantially retained by the liquid crystal polymer at the processing temperature, and the liquid crystal polymer is extruded into the form of a shaped article while the reduction in melt viscosity is thus retained. By employing the process of the present invention, melt processable liquid crystal polymers can be conveniently processed at temperatures near the DSC transition temperature rather than at the higher temperatures commonly encountered in the prior art at which degradation is more likely to occur.

    摘要翻译： 提供了提供改进的加工特性的可熔融加工的液晶聚合物的挤出方法。 该方法包括以下步骤：在DSC转变温度和聚合物的降解温度之间使液晶聚合物达到升高的温度; 将液晶聚合物冷却至DSC转变温度和升高温度之间的处理温度，液晶聚合物的降解温度低于高温时的加工温度; 并且将液晶聚合物挤压成具有机械性能的成形制品的形式，该机械性能比没有经受高温的液晶聚合物形成的制品的机械性能提高。 优选地，液晶聚合物与DSC转变温度下的熔体粘度相比，在升高的温度下显示出与液晶聚合物的熔融粘度相比至少5倍的降低，而液晶聚合物的显着降解 。 熔体粘度的降低在处理温度下基本上被液晶聚合物保持，并且液晶聚合物被挤出成成型制品的形式，同时保持了熔体粘度的降低。 通过采用本发明的方法，可熔融加工的液晶聚合物可以方便地在接近DSC转变温度的温度下处理，而不是在现有技术中通常遇到的更可能发生降解的较高温度下进行处理。

    Liquid crystalline polyesters containing metal terephthalate nucleating agents
    8.
    发明授权
    Liquid crystalline polyesters containing metal terephthalate nucleating agents 失效
    含有金属对苯二甲酸酯成核剂的液晶聚酯

    公开(公告)号：US5264477A

    公开(公告)日：1993-11-23

    申请号：US922704

    申请日：1992-07-28

    申请人： Kurt F. Wissbrun ,  James P. Shepherd

    发明人： Kurt F. Wissbrun ,  James P. Shepherd

    IPC分类号： C08K5/098 ,  C08K5/04 ,  C08G63/02 ,  C08G63/78

    CPC分类号： C08K5/098

    摘要： In situ formation of a melt processable liquid crystalline polyester composition capable of forming an anisotropic melt phase at a temperature of below approximately 400.degree. C. having an improved heat distortion temperature under a load, the composition being formed in the presence of from approximately 0.05 to approximately 1.0 weight percent of a divalent metal salt of terephthalic acid as a nucleating agent. Films, fibers and molded articles produced from the composition exhibit improved thermal properties.

    摘要翻译： 原位形成能在低于约400℃的温度下形成各向异性熔融相的可熔融加工的液晶聚酯组合物，其在负载下具有改进的热变形温度，所述组合物在约0.05至 约1.0重量％的作为成核剂的对苯二甲酸的二价金属盐。 由该组合物制备的薄膜，纤维和模制品表现出改进的热性能。

    Acetal polymer blends
    10.
    发明授权
    Acetal polymer blends 失效
    乙缩醛聚合物共混物

    公开(公告)号：US5045607A

    公开(公告)日：1991-09-03

    申请号：US333511

    申请日：1989-04-05

    申请人： Kurt F. Wissbrun ,  Hongkyu Kim ,  George L. Collins ,  Diane Terrone

    发明人： Kurt F. Wissbrun ,  Hongkyu Kim ,  George L. Collins ,  Diane Terrone

    IPC分类号： C08G2/18 ,  C08L59/00 ,  C08L59/02 ,  C08L59/04

    CPC分类号： C08L59/02 ,  C08G2/18 ,  C08L59/04

    摘要： There are provided new moldable blends of a normally crystalline acetal polymer and a normally non-crystalline elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % of trioxane, about 55 to 85 %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer.

    摘要翻译： 提供了通常结晶的缩醛聚合物和通常非结晶弹性体共聚物的新的可模制共混物，其为约15至45摩尔％，优选约25至35摩尔％的三恶烷，约55至85重量％，优选约65至75摩尔 ％的1,3-二氧戊环，基于三恶烷和1,3-二氧戊环的总量的摩尔百分比，以及约0.005至0.15重量％ ％，优选约0.05至0.12wt。 ％的1,4-丁二醇二缩水甘油醚或丁二烯二环氧化物作为双功能单体，基于共聚物的总重量。