Process for producing a copolyester
    2.
    发明授权
    Process for producing a copolyester 失效
    共聚聚酯的制备方法

    公开(公告)号:US4782132A

    公开(公告)日:1988-11-01

    申请号:US853

    申请日:1987-01-06

    CPC分类号: C08G63/60 C08G63/605

    摘要: A process for producing a copolymeric polyester, which comprises a first step of preparing a copolymeric oligomer by reacting a starting material oligoester or polyester having repeating units of the formula: ##STR1## wherein R.sub.1 is a divalent aromatic hydrocarbon group having from 6 to 10 carbon atoms, a divalent alicyclic hydrocarbon group having from 4 to 20 carbon atoms or/and a divalent aliphatic hydrocarbon group having from 1 to 40 carbon atoms (provided a hydrogen atom in the aromatic ring of the aromatic hydrocarbon group may be substituted by a halogen atom or an alkyl or alkoxy group having from 1 to 4 carbon atoms), and R.sup.2 is a divalent aliphatic hydrocarbon group having from 2 to 40 carbon atoms, a divalent alicyclic hydrocarbon group having from 4 to 20 carbon atoms, or a divalent radical of polyalkylene oxide having a molecular weight of from 80 to 8000, in an amount from 5 to 95 mol % as represented by the amount of the repeating units constituting the oligoester or polyester, with from 5 to 95 mol % of a hydroxycarboxylic acid of the formula:HO--R.sup.3 COOH (B)wherein R.sup.3 is a divalent aromatic hydrocarbon group having from 6 to 20 carbon atoms on its aromatic ring (provided a hydrogen atom in the aromatic ring of the aromatic hydrocarbon group may be substituted by a halogen atom or an alkyl or alkoxy group having from 1 to 4 carbon atoms), a second step of acylating the oligomer by an addition of an acylating agent, and a third step of polymerizing the acylated oligomer under reduced pressure, wherein prior to the completion of the second step, a dihydroxyl compound of the formula:HOR.sup.4 OH (C)wherein R.sup.4 has the same meaning as R.sup.1 in the formula A, or the compound of the formula C and a dicarboxylic acid of the formula:HOOCR.sup.5 COOH (D)wherein R.sup.5 has the same meaning as R.sup.1 in the formula A, are added for reaction.

    摘要翻译: 一种制备共聚聚酯的方法,其包括通过使具有下式的重复单元的原料低聚酯或聚酯反应制备共聚低聚物的第一步:其中R 1是具有6个碳原子的二价芳族烃基 碳原子数为4〜20的二价脂环式烃基和/或碳原子数1〜40的2价脂肪族烃基(芳香族烃基的芳香环中的氢原子可以被 卤原子或碳原子数为1〜4的烷基或烷氧基),R 2为碳原子数为2〜40的二价脂肪族烃基,碳原子数为4〜20的二价脂环式烃基或二价 分子量为80〜8000的聚环氧烷的基团,以构成低聚酯或p的重复单元的量表示的5〜95摩尔% 醇酯,其具有5至95mol%的下式的羟基羧酸:HO-R 3 COOH(B)其中R 3是其芳环上具有6至20个碳原子的二价芳族烃基(在芳族化合物中提供氢原子 芳香族烃基的环可以被卤原子或碳原子数为1〜4的烷基或烷氧基取代),通过加成酰化剂使低聚物酰化的第二工序,以及使第 酰化低聚物,其中在第二步骤完成之前,式HOR 4 OH(C)的二羟基化合物其中R 4具有与式A中的R 1相同的含义,或式C化合物和二羧酸 加入其中R 5具有与式A中的R 1相同含义的下式的HOOCR 5 COOH(D)的酸反应。

    Process for producing melting-anisotropic, copolymerized polyester
    3.
    发明授权
    Process for producing melting-anisotropic, copolymerized polyester 失效
    生产熔融各向异性共聚聚酯的方法

    公开(公告)号:US4621129A

    公开(公告)日:1986-11-04

    申请号:US800127

    申请日:1985-10-31

    CPC分类号: C08G63/60

    摘要: A process for producing a melting-anisotropic copolymerized polyester containing an alkylene terephthalate component, which comprises reacting a starting polyester composed of a dicarboxylic acid and a diol with an oxyaromatic carboxylic acid to form a copolymerized oligomer, then conducting acylating reaction by the addition of an acylating agent and further conducting polycondensating reduction thereby producing a melting-anisotropic, copolymerized polyester having a logarithmic viscosity of at least 0.2 dl/g. According to this process, a polyester of excellent physical property can be obtained at a good production efficiency.

    摘要翻译: PCT No.PCT / JP85 / 00094 Sec。 371日期1985年10月31日第 102(e)1985年10月31日PCT PCT公布1985年2月28日PCT公布。 公开号WO85 / 03941 日本公报1985年9月12日。一种制备含有对苯二甲酸亚烷基酯组分的熔融各向异性共聚聚酯的方法,其包括使由二羧酸和二醇组成的起始聚酯与氧芳族羧酸反应形成共聚低聚物, 通过加入酰化剂进行酰化反应,进一步进行缩聚反应,从而制备对数粘度为至少0.2dl / g的熔融各向异性的共聚聚酯。 根据该方法,可以以良好的生产效率获得具有优异物理性质的聚酯。

    POLYESTER RESIN COMPOSITION FOR INJECTION-MOLDING, LIGHT REFLECTOR BASE AND LIGHT REFLECTOR
    4.
    发明申请
    POLYESTER RESIN COMPOSITION FOR INJECTION-MOLDING, LIGHT REFLECTOR BASE AND LIGHT REFLECTOR 审中-公开
    注塑成型用聚酯树脂组合物,反光底座和光反射器

    公开(公告)号:US20110007410A1

    公开(公告)日:2011-01-13

    申请号:US12667467

    申请日:2008-07-02

    摘要: The present invention provides a polyester resin composition for injection-molding which is excellent in mold releasability, and is capable of providing light reflectors which are excellent in apparent luminance and reflectivity, and suppressed in hazing even used under high temperatures. A polyester resin composition for injection-molding comprising, (A) 100 parts by weight of a polyester resin, (B) 0.1 to 20 parts by weight of zirconium silicate having an average primary particle size of 10 μm or smaller and (C) 0 to 5 parts by weight of a chelating agent capable of forming a chelate with mono- to tetra-valent metal ions.

    摘要翻译: 本发明提供一种脱模性优异的注射成型用聚酯树脂组合物,能够提供即使在高温下使用的表观亮度和反射率优异的光反射体,也抑制了雾度的抑制。 一种注射成型用聚酯树脂组合物,其特征在于,含有(A)100重量份聚酯树脂,(B)0.1〜20重量份平均一次粒径为10μm以下的硅酸锆和(C)0 至5重量份能够与一价至四价金属离子形成螯合物的螯合剂。

    Multi-layer packaging film
    5.
    发明授权
    Multi-layer packaging film 失效
    多层包装膜

    公开(公告)号:US06355336B1

    公开(公告)日:2002-03-12

    申请号:US09460330

    申请日:1999-12-10

    IPC分类号: B32B2708

    摘要: The present invention relates to a multi-layer packaging film comprising an intermediate layer having at least one outer layer on both surfaces of the intermediate layer, and having the thickness of not more than 40 &mgr;m, said outer layer comprising a polyolefin resin, said intermediate layer comprising a polytetramethylene terephthalate resin obtained by copolymerizing polytetramethylene oxide glycol having a number-average molecular weight of 300 to 5,000 and having an intrinsic viscosity of 0.7 to 2.0, a melting point of 200 to 228° C. and a crystallization temperature of not higher than 180° C., and the thickness of said intermediate layer being 20 to 80% of the thickness of the multi-layer film.

    摘要翻译: 本发明涉及一种多层包装薄膜,它包括中间层,该中间层在中间层的两个表面上具有至少一个外层,并且具有不大于40μm的厚度,所述外层包含聚烯烃树脂,所述中间体 通过共聚数均分子量为300〜5000,特性粘度为0.7〜2.0,熔点为200〜228℃,结晶温度不高的聚四亚甲基环氧二醇得到的聚对苯二甲酸丁二醇酯树脂层 超过180℃,所述中间层的厚度为多层膜的厚度的20〜80%。