Process for preparing polyarylates
    31.
    发明授权
    Process for preparing polyarylates 失效
    多芳基化合物的制备方法

    公开(公告)号:US4314051A

    公开(公告)日:1982-02-02

    申请号:US146210

    申请日:1980-05-05

    IPC分类号: C08G63/00 C08G63/19 C08G63/80

    CPC分类号: C08G63/80 C08G63/19

    摘要: Described herein is a process for preparing crystalline polyarylates which comprises (a) forming a crystalline polyarylate prepolymer having a reduced viscosity of from 0.05 to about 0.4 dl/g by reacting at least one diester derivative of a dihydric phenol with at least one aromatic dicarboxylic acid in the presence of a solvent, at a temperature of from about 250.degree. to about 300.degree. C., and (b) heating the prepolymer so formed below its melting point to form a crystalline polyarylate having a reduced viscosity of from about 0.45 to about 1.2 dl/g.

    摘要翻译: 本文描述的是制备结晶多芳基化合物的方法,其包括(a)通过使二元酚的至少一种二酯衍生物与至少一种芳族二羧酸反应形成具有0.05至约0.4dl / g的比浓粘度的结晶多芳基化合物预聚物 在溶剂存在下,在约250℃至约300℃的温度下,和(b)加热在其熔点以下形成的预聚物以形成结晶多芳基化合物,其具有约0.45至约 1.2 dl / g。

    Process for the preparation of polycarbonate and/or polyarylate block
copolymers with poly(aryl ethers)
    33.
    发明授权
    Process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers) 失效
    用聚(芳基醚)制备聚碳酸酯和/或聚芳酯嵌段共聚物的方法

    公开(公告)号:US5159028A

    公开(公告)日:1992-10-27

    申请号:US700489

    申请日:1991-05-15

    IPC分类号: C08G81/00

    CPC分类号: C08G81/00

    摘要: The invention describes a novel process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers). The process is comprised of the steps:(a) the reaction of a dihydroxy-terminated poly(aryl ether) oligomer with a high molecular weight polycarbonate, or a high molecular weight polyarylate, or a high molecular weight poly(arylate-carbonate) to yield a block copolymer; followed by(b) the coupling of the material obtained in step (a) to the required molecular weight, using a diaryl ester of carbonic acid or of a dicarboxylic acid.Both steps are performed in the presence of a catalyst. The copolymerizations can be run in bulk under vacuum in a single or twin screw extruder. Using the above conditions high molecular weight, high quality block copolymers having a combination of excellent properties are obtained in a matter of minutes.

    摘要翻译: 本发明描述了用聚(芳基醚)制备聚碳酸酯和/或聚芳酯嵌段共聚物的新方法。 该方法包括以下步骤:(a)二羟基封端的聚(芳基醚)低聚物与高分子量聚碳酸酯或高分子量聚芳酯或高分子量聚芳基酯 - 碳酸酯的反应与 得到嵌段共聚物; (b)使用碳酸或二羧酸的二芳基酯将步骤(a)中获得的材料与所需的分子量的偶联。 两个步骤都在催化剂存在下进行。 共聚可以在单螺杆或双螺杆挤出机中在真空下大量运行。 使用上述条件可以在几分钟内获得具有优异性能的组合的高分子量的高质量嵌段共聚物。

    Poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers block
copolymers
    35.
    发明授权
    Poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers block copolymers 失效
    聚(芳基醚砜) - 聚(芳基醚酮)嵌段共聚物嵌段共聚物

    公开(公告)号:US4968758A

    公开(公告)日:1990-11-06

    申请号:US234760

    申请日:1988-08-22

    IPC分类号: C08G61/12 C08G75/23

    摘要: Novel poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers are described. They are prepared by the nucleophilic polycondensation of a hydroxy- or halo-terminated poly(aryl ether ketone) oligomer with the poly(aryl ether sulfone) forming reagents; alternatively, a preformed poly(aryl ether sulfone) block may be used.The novel copolymers are tough materials with excellent heat, solvent, and stress-crack resistanced. They display high HDT's (heat distortion temperatures) and are useful in molding, extrusion and composites applications.

    摘要翻译: 描述了新的聚(芳基醚砜) - 聚(芳醚酮)嵌段共聚物。 它们通过羟基或卤素封端的聚(芳基醚酮)低聚物与聚(芳基醚砜)形成试剂的亲核缩聚制备; 或者,可以使用预制的聚(芳基醚砜)嵌段。 新型共聚物是具有优异的耐热,耐溶剂和耐应力裂纹性能的坚韧材料。 它们显示出高HDT(热变形温度),并且可用于成型,挤出和复合材料应用。

    Novel poly(aryl ether) polymers
    36.
    发明授权
    Novel poly(aryl ether) polymers 失效
    新型聚(芳基醚)聚合物

    公开(公告)号:US4870153A

    公开(公告)日:1989-09-26

    申请号:US111344

    申请日:1987-10-22

    IPC分类号: C08G61/12 C08G65/40

    CPC分类号: C08G65/4012 C08G61/127

    摘要: Described herein are novel poly(aryl ether) polymers that contain naphthalene, terephenylene and/or anthracenylene units within their chains. Representative polymers are tough materials having excellent high temperature, oxidative and chemical resistance, and easy melt fabricability.

    摘要翻译: 本文描述的是在其链中含有萘,三苯基和/或蒽基单元的新型聚(芳基醚)聚合物。 代表性的聚合物是具有优异的耐高温,耐氧化和耐化学性以及易熔融可加工性的坚韧材料。

    Novel poly(aryl ether ketone) polyester block copolymers
    37.
    发明授权
    Novel poly(aryl ether ketone) polyester block copolymers 失效
    新型聚(芳醚酮)聚酯嵌段共聚物

    公开(公告)号:US4668744A

    公开(公告)日:1987-05-26

    申请号:US787122

    申请日:1985-10-15

    CPC分类号: C08G61/127 C08G63/66

    摘要: Described herein are novel block copolymers wherein one block is a poly(aryl ether ketone) oligomer and the other block is a liquid crystalline polyester oligomer. Processes for the preparation of the subject copolymers are also described. The novel block copolymers display excellent mechanical properties, good high temperatures stability and excellent solvent and chemical resistance.

    摘要翻译: 本文描述的是新的嵌段共聚物,其中一个嵌段是聚(芳基醚酮)低聚物,另一个嵌段是液晶聚酯低聚物。 还描述了制备目标共聚物的方法。 新型嵌段共聚物显示出优异的机械性能,良好的高温稳定性和优异的溶剂和耐化学性。