Anionic polymerization of lactams in an extruder with controlled output
rate
    1.
    发明授权
    Anionic polymerization of lactams in an extruder with controlled output rate 失效
    在具有受控输出速率的挤出机中阴离子聚合内酰胺

    公开(公告)号:US4067861A

    公开(公告)日:1978-01-10

    申请号:US627948

    申请日:1975-11-03

    摘要: Anionic polymerization of lactams is carried out in an extruder into which at least one lactam, at least one catalyst and at least one activating agent are introduced and wherein the mixture of said substances is polymerized prior to being extruded through an extrusion die. The output rate of the polymerized substance is controlled by transfer means, such as a metering pump, arranged between the outlet of the body of the extruder and the extrusion die.

    摘要翻译: 内酰胺的阴离子聚合在其中引入至少一种内酰胺,至少一种催化剂和至少一种活化剂的挤出机中进行,并且其中所述物质的混合物在通过挤出模头挤出之前被聚合。 聚合物质的输出速率由设置在挤出机主体的出口与挤出模头之间的传送装置如计量泵控制。

    Method for purifying lactams
    2.
    发明授权
    Method for purifying lactams 失效
    内酰胺纯化方法

    公开(公告)号:US3960846A

    公开(公告)日:1976-06-01

    申请号:US508020

    申请日:1974-09-20

    CPC分类号: C07D201/16

    摘要: The instant invention relates to a method for purifying lactams wherein the lactam to be purified is contacted in the fused state with inorganic adsorption agents.The said method comprises contacting the lactam to be purified in the fused state with an inorganic adsorbent, then separating the lactam from the adsorbent and regenerating said adsorbent if desired, wherein said adsorbent is impregnated with at least one impregnation compound selected from the group consisting of an acid and the alkali metal salts which are thermally stable and exert no action on the lactam at temperatures lower tha 250.degree.C.

    摘要翻译: 本发明涉及纯化内酰胺的方法,其中待纯化的内酰胺以熔融状态与无机吸附剂接触。

    Production of high molecular weight, essentially uncrosslinked
polychlorophosphazenes
    4.
    发明授权
    Production of high molecular weight, essentially uncrosslinked polychlorophosphazenes 失效
    高分子量的生产,基本上是交联的聚氯乙烯

    公开(公告)号:US5152971A

    公开(公告)日:1992-10-06

    申请号:US525727

    申请日:1990-05-21

    IPC分类号: B01F7/24 B01J19/20 C01B21/098

    摘要: High molecular weight, essentially uncrosslinked polychlorophosphazenes are prepared by bulk polycondensing a monomer of the formula P.sub.2 NXCl.sub.2, in which X is an oxygen or sulfur atom, e.g., N-dichlorophosphoryl- or N-dichlorothiophosphoryl-P-trichlorophosphazene, and wherein at least that final stage of polycondensation following cessation of evolution of PXCl.sub.3 is carried out in a stirred reaction zone, such stirred reaction zone including means to prevent the accumulation of polycondensate on the stirrer.

    摘要翻译: 高分子量,基本上未交联的聚氯磷腈通过本体缩聚式P2NXCl 2的单体,其中X是氧或硫原子,例如N-二氯磷酰基或N-二氯硫代磷酰基-P-三氯磷腈,并且其中至少该最终 在停止进行PXCl 3的缩聚阶段是在搅拌反应区中进行的,这种搅拌反应区包括防止缩聚物在搅拌器上堆积的装置。

    Purification of crude polyorganophosphazenes
    5.
    发明授权
    Purification of crude polyorganophosphazenes 失效
    粗聚有机磷腈的纯化

    公开(公告)号:US4889910A

    公开(公告)日:1989-12-26

    申请号:US257946

    申请日:1988-10-14

    IPC分类号: C08G79/02

    CPC分类号: C08G79/025

    摘要: Crude polyorganophosphazenes, produced by the nucleophilic cosubstitution of polydichlorophosphazenes and contained in a reaction medium which includes such polyorganophosphazenes, reaction solvent for the cosubstitution reaction, excess nucleophilic reagent and/or product of neutralization thereof, and, when present, any alkali metal salts of neutralization, are efficiently and facilely purified, in a single treatment zone, advantageously under agitation in a discontinuous malaxator, by both eliminating the reaction solvent and thereafter washing the resulting reaction medium with a liquid which is a nonsolvent for the polyorganophosphazenes, but miscible with the other products present in said reaction medium.

    摘要翻译: 通过聚二氯磷腈的亲核共成分制备并包含在包含这种聚有机基膦腈的反应介质中,用于共价还原反应的反应溶剂,过量的亲核试剂和/或其中和产物,以及当存在任何中和的碱金属盐时,产生的粗聚有机膦腈 在单一处理区域中,有利地在不连续的苹果酸盐搅拌下,通过消除反应溶剂并随后用对于聚有机膦腈的非溶剂的液体洗涤所得到的反应介质,但与其它物质混溶,可以有效和便利地纯化 存在于所述反应介质中的产物。

    Fire-resistant polycarbonates
    6.
    发明授权
    Fire-resistant polycarbonates 失效
    耐火聚碳酸酯

    公开(公告)号:US4721583A

    公开(公告)日:1988-01-26

    申请号:US886200

    申请日:1986-07-15

    摘要: A fire-resistant polycarbonate composition comprising a polycarbonate and for each one thousand parts by weight thereof from about 0.1 to 10 parts by weight of a salt of the formula: ##STR1## in which R is a C.sub.1 to C.sub.6 alkyl radical or an aryl radical, unsubstituted or substituted aryl radical and M is an alkali metal selected from Li, Na, or K.

    摘要翻译: 一种耐火聚碳酸酯组合物,其包含聚碳酸酯和每1000重量份的约0.1至10重量份下式的盐:其中R是C1至C6烷基或芳基 ,未取代或取代的芳基,M为选自Li,Na或K的碱金属。

    Preparation of sodium fluoroalcoholates
    9.
    发明授权
    Preparation of sodium fluoroalcoholates 失效
    氟代醇钠的制备

    公开(公告)号:US5260494A

    公开(公告)日:1993-11-09

    申请号:US022846

    申请日:1993-02-25

    摘要: The sodium fluoroalcoholates are prepared under conditions resulting in neither reactant nor final product degradation, by (a) reacting, under reflux, the corresponding fluoroalcohols, e.g., the mono-, di- or trifluoroethanols, with sodium methanolate in the presence of a solvent having a boiling point higher than that of methanol and/or a solvent which forms an azeotrope with methanol, and (b) selectively trapping the methanol of reaction, e.g., in a molecular sieve, as it is released into the vapors which evolve upon refluxing the step (a) reaction mixture; the sodium fluoroalcoholates thus produced are well suited for direct reaction with polydichlorophosphazenes.

    摘要翻译: 在不产生反应物和最终产物降解的条件下,通过(a)在回流下使相应的氟代醇例如单 - ,二 - 或三氟乙醇与甲醇钠在溶剂存在下反应制备氟代醇, 沸点高于与甲醇和/或与甲醇形成共沸物的溶剂的沸点,和(b)当将其释放到蒸发器中时,选择性地捕集反应的甲醇,例如在分子筛中回收的蒸气中 步骤(a)反应混合物; 这样制得的氟代醇钠很适合与聚二氯磷腈的直接反应。

    Process for the preparation of linear polychlorophosphazene
    10.
    发明授权
    Process for the preparation of linear polychlorophosphazene 失效
    线性聚氯磷腈的制备方法

    公开(公告)号:US4693876A

    公开(公告)日:1987-09-15

    申请号:US882958

    申请日:1986-08-14

    CPC分类号: C08G79/025 C01B21/0986

    摘要: A process for preparing linear polychlorophosphazenes having a terminal --PXCl.sub.2 group, wherein X is O or S, by polycondensation of a monomer of the formula P.sub.2 NXCl.sub.5, by heating to release PXCl.sub.3 and continuing the heating after the evolution of PXCl.sub.3 has stopped. In the process, at least the heat induced polycondensation phase after evolution of PXCl.sub.3 has stopped is carried out in solution in a medium which is a solvent for both the monomer and the polymer and which is inert to the constituents of the polycondensation reaction. The process reduces the amount of cross-linking and produces high molecular weight polymers in a reproducible way.

    摘要翻译: PCT No.PCT / FR85 / 00294 Sec。 371日期1986年8月14日 102(e)日期1986年8月14日PCT提交1985年10月15日PCT公布。 公开号WO86 / 02344 日期:1986年4月24日。一种制备具有末端-PXCl 2基团的线性聚氯代磷腈的方法,其中X为O或S,通过加热制备式P2NXCl5的单体,通过加热释放PXCl 3并继续进行加热 PXCl3已停止。 在该方法中,至少在PXCl3析出后的热诱导缩聚相停止在作为单体和聚合物的溶剂的介质中的溶液中进行,并且对于缩聚反应的组分是惰性的。 该方法减少了交联的量,并以可再现的方式产生高分子量聚合物。