Preparation of thermoplastic nanocomposite
    1.
    发明授权
    Preparation of thermoplastic nanocomposite 有权
    热塑性纳米复合材料的制备

    公开(公告)号:US06136908A

    公开(公告)日:2000-10-24

    申请号:US334681

    申请日:1999-06-17

    IPC分类号: C08K7/10 C08K9/04 C08K3/36

    CPC分类号: C08K9/04 C08K7/10

    摘要: A method for producing a thermoplastic nanocomposite is disclosed. The method comprises the steps of: (a) contacting a swellable layered silicate with a polymerizable aminoaryl lactam monomer to achieve intercalation of said lactam monomer between adjacent layers of said layered silicate; and (b) admixing the intercalated layered silicate with a thermoplastic polymer, and heating the admixture to provide for flow of said polymer and polymerization of the intercalated lactam monomer to cause exfoliation of said layered silicate, thereby forming a thermoplastic nanocomposite having exfoliated silicate layers dispersed in a thermoplastic polymer matrix.

    摘要翻译: 公开了一种生产热塑性纳米复合材料的方法。 该方法包括以下步骤:(a)使可溶胀的层状硅酸盐与可聚合的氨基芳基内酰胺单体接触,以实现所述层状硅酸盐的相邻层之间所述内酰胺单体的嵌入; 和(b)将嵌入的层状硅酸盐与热塑性聚合物混合,加热混合物以提供所述聚合物的流动并插入的内酰胺单体的聚合以引起所述层状硅酸盐的剥离,由此形成具有分散的硅酸盐层的热塑性纳米复合材料 在热塑性聚合物基质中。

    Method for forming nanocomposites
    2.
    发明授权
    Method for forming nanocomposites 有权
    形成纳米复合材料的方法

    公开(公告)号:US06252020B1

    公开(公告)日:2001-06-26

    申请号:US09286550

    申请日:1999-04-05

    IPC分类号: C08F1208

    摘要: Disclosed is a method for forming a polymer nanocomposite, which comprises (a) modifying a clay material comprising layered silicate particles by ion exchange with a surfactant to form an organoclay; (b) dispersing the organoclay in a vinyl monomer and bulk polymerizing said monomer in the presence of a catalyst; and (c) adding a liquid suspension to the above mixture to effect suspension polymerization when the conversion rate of the polymerization is about 10% to 50%, thereby forming a composite having the particles uniformly dispersed in a vinyl polymer matrix.

    摘要翻译: 公开了一种形成聚合物纳米复合材料的方法,其包括(a)通过与表面活性剂的离子交换将包含层状硅酸盐颗粒的粘土材料改性以形成有机粘土; (b)将有机粘土分散在乙烯基单体中并在催化剂存在下本体聚合所述单体; 和(c)当聚合的转化率为约10%至5​​0%时,向上述混合物中加入液体悬浮液以进行悬浮聚合,从而形成具有均匀分散在乙烯基聚合物基质中的颗粒的复合物。

    Preparation of conductive polymeric nanocomposite
    4.
    发明授权
    Preparation of conductive polymeric nanocomposite 失效
    导电聚合物纳米复合材料的制备

    公开(公告)号:US6136909A

    公开(公告)日:2000-10-24

    申请号:US334633

    申请日:1999-06-17

    摘要: A method for producing a conductive polyaniline/layered inorganic nanocomposite having a conductivity greater than 10.sup.-1 S/cm is disclosed. The method comprises the steps of: (a) forming a reaction mixture comprising water, an aniline monomer, a protonic acid, an oxidizing agent, and a layered silicate which has been subjected to an acid treatment or is intercalated with polyethylene glycol; and (b) subjecting said reaction mixture to oxidative polymerization to form a conductive polymeric nanocomposite having said layered silicate dispersed in a polymeric matrix of polyaniline.

    摘要翻译: 公开了导电率大于10-1S / cm的导电性聚苯胺/层状无机纳米复合体的制造方法。 该方法包括以下步骤:(a)形成包含水,苯胺单体,质子酸,氧化剂和经过酸处理或嵌入聚乙二醇的层状硅酸盐的反应混合物; 和(b)使所述反应混合物进行氧化聚合以形成具有分散在聚苯胺的聚合物基质中的所述层状硅酸盐的导电聚合物纳米复合材料。

    Catalytic compositions containing tetrabutyl titanate and a mixture of
cocatalysts for the preparation of poly(butylene terephthalate)
    6.
    发明授权
    Catalytic compositions containing tetrabutyl titanate and a mixture of cocatalysts for the preparation of poly(butylene terephthalate) 失效
    包含钛酸四丁酯和用于制备聚对苯二甲酸丁二醇酯的助催化剂混合物的催化组合物

    公开(公告)号:US5519108A

    公开(公告)日:1996-05-21

    申请号:US481114

    申请日:1995-06-07

    IPC分类号: C08G63/82 C08G63/02

    CPC分类号: C08G63/82

    摘要: A catalyst composition for use in the preparation of poly(butylene terephthalate) from dimethyl terephthalate, comprising: (a) a titanium compound primary catalyst, from about 0.0005 PHR to about 5 PHR; (b) a first co-catalyst containing at least one of Zn, Co, Mn, Mg, Ca, or Pb series compounds, between about 0.0001 PHR and 5 PHR; and (c) a second co-catalyst containing an alkali metal phosphate, an alkali metal phosphite, an alkali hypophosphite, or an alkali metal polyphosphate between about 0.0001 PHR and 5 PHR; wherein PHR represents parts of the primary catalyst or the co-catalyst per one hundred parts, by weight, of dimethyl terephthalate. Preferred titanium compounds include tetrabutyl titanate or tetra(isopropyl)titanate. Preferred metal compounds for use as first co-catalyst are metal acetates. The alkali metal phosphate can be a phosphate salt containing one, two, or three metal groups; and the alkali metal phosphite can be a phosphite salt containing one or two metal groups. The alkali metal hypophosphite can be a hypophosphite salt containing any number of alkali metal groups. The alkali metal polyphosphate can be a polyphosphate salt containing one, two, three, four, or five alkali metal groups. With this catalyst composition, the rate of polycondensation was increased by 40 percent or more. The catalyst composition is also effective in the preparation of poly(butylene terephthalate) from terephthalic acid.

    摘要翻译: 一种用于从对苯二甲酸二甲酯制备聚(对苯二甲酸丁二醇酯)的催化剂组合物,包括:(a)钛化合物一次催化剂,约0.0005PHR至约5PHR; (b)含有Zn,Co,Mn,Mg,Ca或Pb系化合物中的至少一种的第一助催化剂,约0.0001PHR和5PHR之间; 和(c)含有约0.0001PHR与5PHR之间的碱金属磷酸盐,碱金属亚磷酸盐,碱性次磷酸盐或碱金属多磷酸盐的第二助催化剂; 其中PHR代表每100重量份对苯二甲酸二甲酯的主要催化剂或助催化剂的部分。 优选的钛化合物包括钛酸四丁酯或钛酸四(异丙基)酯。 用作第一助催化剂的优选金属化合物是金属乙酸盐。 碱金属磷酸盐可以是含有一个,两个或三个金属基团的磷酸盐; 碱金属亚磷酸盐可以是含有一个或两个金属基团的亚磷酸盐。 碱金属次磷酸盐可以是含有任何碱金属基团的次亚磷酸盐。 碱金属多磷酸盐可以是含有一个,两个,三个,四个或五个碱金属基团的多磷酸盐。 使用该催化剂组合物,缩聚率提高了40%以上。 催化剂组合物在从对苯二甲酸制备聚对苯二甲酸丁二醇酯时也是有效的。

    Poly(1,3-propylene therephthalate)
    7.
    发明授权
    Poly(1,3-propylene therephthalate) 失效
    聚(对苯二甲酸1,3-丙二醇酯)

    公开(公告)号:US5872204A

    公开(公告)日:1999-02-16

    申请号:US36096

    申请日:1998-03-06

    摘要: The present invention provides a novel poly(1,3-propylene terephthalate), which is prepared from reacting terephthalic acid and 1,3-propanediol in the presence of an effective catalytic amount of ethylene glycol titanate to undergo esterification to form a monomer; and polymerizing the monomer in the presence of an effective catalytic amount of antimony acetate to obtain poly(1,3-propylene terephthalate). The obtained poly(1,3-propylene terephthalate) (PPT) has an intrinsic viscosity (IV) of 0.65-0.91 dl/g, acid number (--COOH amount) of less than 40 meq/kg, and L*>60. Without adding a pigment, the yellowness b* of PPT is below 9, even below 5. The yellowness b* of PPT even reaches below 3 when a pigment is incorporated.

    摘要翻译: 本发明提供了一种新型的对苯二甲酸1,3-丙二醇酯,其是在有效催化量的乙二醇钛酸酯存在下,使对苯二甲酸和1,3-丙二醇反应制得的,以进行酯化以形成单体; 并在有效催化量的乙酸锑存在下使单体聚合,得到聚对苯二甲酸1,3-丙二醇酯。 所得聚对苯二甲酸1,3-丙二醇酯(PPT)的特性粘度(IV)为0.65-0.91dl / g,酸值(-COOH量)小于40meq / kg,L *> 60。 不添加颜料时,PPT的黄度b *低于9,甚至低于5.当掺入颜料时,PPT的黄度b *甚至达到3以下。

    Modified clay minerals and polymer composites comprising the same
    8.
    发明授权
    Modified clay minerals and polymer composites comprising the same 有权
    改性粘土矿物和包含其的聚合物复合材料

    公开(公告)号:US06562891B1

    公开(公告)日:2003-05-13

    申请号:US09526059

    申请日:2000-03-15

    IPC分类号: C08K334

    CPC分类号: C08F2/44 C01B33/44 C08K9/04

    摘要: Disclosed herein is a modified clay mineral comprising a layered clay mineral intercalated with a catalyst that can catalyze a polymerization reaction. Also disclosed herein are a polymer/clay nanocomposite and a method for its manufacture, the polymer/clay nanocomposite comprising a polymer matrix and a layered clay mineral uniformly dispersed in the polymer matrix, the layered clay mineral being intercalated with a catalyst that catalyzes the polymerization of the polymer matrix.

    摘要翻译: 本文公开了一种改性粘土矿物,其包含层状粘土矿物,该层状粘土矿物插层有可催化聚合反应的催化剂。 本文还公开了聚合物/粘土纳米复合材料及其制造方法,所述聚合物/粘土纳米复合材料包含均匀分散在聚合物基质中的聚合物基质和层状粘土矿物,层状粘土矿物被插入催化剂的催化剂 的聚合物基质。