Polyethylene pipe
    1.
    发明授权
    Polyethylene pipe 有权
    聚乙烯管

    公开(公告)号:US06904940B2

    公开(公告)日:2005-06-14

    申请号:US10399513

    申请日:2001-10-16

    摘要: Multi-layered pipe comprising a main layer of polyethylene compound having a resistance to stress cracking NPT measured according to ISO 13479 standard of less than 8000 hours and an internal layer of polyethylene compound having a resistance to stress cracking NPT of higher than 8000 hours, the thickness of the internal layer being between 1 and 25% of the total pipe thickness but not less than 0.3 mm.

    摘要翻译: 多层管包含根据ISO13479标准测量的抗应力开裂NPT小于8000小时的聚乙烯化合物主层和耐应力开裂NPT高于8000小时的聚乙烯化合物内层, 内层的厚度在总管厚度的1至25%之间但不小于0.3mm。

    Crosslinkable polyethylene composition
    3.
    发明授权
    Crosslinkable polyethylene composition 有权
    可交联聚乙烯组合物

    公开(公告)号:US07087697B2

    公开(公告)日:2006-08-08

    申请号:US10181777

    申请日:2001-01-15

    IPC分类号: C08F110/02

    摘要: Composition based on a crosslinkable polyethylene comprising from 0.05 to 0.24 hydrolysable silane groups per 100 —CH2— units and having a standard density SD of at least 954 kg/m3 and a melt flow index MI5 of less than 1.5 g/10 min. Pipes for the transportation of fluids under pressure, which can be obtained by extruding this composition and then hydrolysing it.

    摘要翻译: 基于可交联聚乙烯的组合物,其包含每100个-CH 2 2-单元0.05至0.24个可水解硅烷基团,并且具有至少954kg / m 3的标准密度SD和 熔体流动指数MI <5>小于1.5g / 10min。 用于在压力下输送流体的管道,其可以通过挤出该组合物然后水解而获得。

    Process for the synthesis of polyamides
    7.
    发明授权
    Process for the synthesis of polyamides 失效
    聚酰胺合成方法

    公开(公告)号:US5416189A

    公开(公告)日:1995-05-16

    申请号:US145208

    申请日:1993-11-03

    IPC分类号: C08G69/26 C08G69/28

    CPC分类号: C08G69/265 C08G69/28

    摘要: Process for the synthesis of polyamides by polycondensation in a closed reactor of one or a number of dicarboxylic acids with a diamine compound containing not less than 60 mol % of-m-xylyenediamine, in which all the amount of diamine compound stoichiometrically necessary for the polycondensation reaction is quickly brought into contact with the molten acid, the temperature of the reaction mixture is raised to a value greater than the melting point of the polyamide produced, the pressure is only allowed to rise to a value sufficient to prevent solidification of the reaction mixture and a substantial loss of diamine compound and, at the end of the reaction, the pressure of the reaction mixture is reduced and the polyamide formed is recovered.

    摘要翻译: 在一种或多种二羧酸与含有不低于60mol%的间二甲苯二胺的二胺化合物的闭合反应器中缩聚合成聚酰胺的方法,其中所有量的缩聚所需的化学计量的二胺化合物 反应快速与熔融酸接触,反应混合物的温度升高到大于所生产聚酰胺的熔点的值,压力仅允许上升至足以防止反应混合物固化的值 和二胺化合物的显着损失,并且在反应结束时,反应混合物的压力降低,并且回收形成的聚酰胺。

    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them
    8.
    发明授权
    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them 失效
    具有改善冲击强度的聚苯硫醚类组合物及其制备方法

    公开(公告)号:US06849697B2

    公开(公告)日:2005-02-01

    申请号:US10384754

    申请日:2003-03-11

    摘要: Polyphenylene sulphide-based compositions essentially containing 60 to 99.5% by weight of polyphenylene sulphide and 0.5 to 40% by weight of a combination (C) containing a compound (C1) chosen from olefinic elastomers containing epoxy groups and a compound (C2) chosen from crosslinking agents containing functional groups which are reactive towards the epoxy groups of the compound (C1) and are chosen from amino, hydroxyl, carboxyl and carboxylic acid anhydride groups. They are obtained by melt-blending polyphenylene sulphide with each of the compounds (C1) and (C2) of the combination (C) successively and in any order.

    摘要翻译: 基于聚苯硫醚的组合物,其基本上含有60-99.5重量%的聚苯硫醚和0.5-40重量%的含有选自含有环氧基的烯烃弹性体和化合物(C2)的化合物(C1)的组合(C),选自 含有对化合物(C1)的环氧基具有反应性且选自氨基,羟基,羧基和羧酸酐基团的官能团的交联剂。 它们通过将聚苯硫醚与组合(C)的化合物(C1)和(C2)中的每一种相继地和以任何顺序熔融共混获得。

    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them
    9.
    发明授权
    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them 失效
    具有改善冲击强度的聚苯硫醚类组合物及其制备方法

    公开(公告)号:US06699946B1

    公开(公告)日:2004-03-02

    申请号:US08327882

    申请日:1994-10-24

    IPC分类号: C08F28300

    摘要: Polyphenylene sulphide-based compositions essentially containing 60 to 99.5% by weight of polyphenylene sulphide and 0.5 to 40% by weight of a combination (C) containing a compound (C1) chosen from olefinic elastomers containing epoxy groups and a compound (C2) chosen from crosslinking agents containing functional groups which are reactive towards the epoxy groups of the compound (C1) and are chosen from amino, hydroxyl, carboxyl and carboxylic acid anhydride groups. They are obtained by melt-blending polyphenylene sulphide with each of the compounds (C1) and (C2) of the combination (C) successively and in any order.

    摘要翻译: 基于聚苯硫醚的组合物,其基本上含有60-99.5重量%的聚苯硫醚和0.5-40重量%的含有选自含有环氧基的烯烃弹性体和化合物(C2)的化合物(C1)的组合(C),选自 含有对化合物(C1)的环氧基具有反应性且选自氨基,羟基,羧基和羧酸酐基团的官能团的交联剂。 它们通过将聚苯硫醚与组合(C)的化合物(C1)和(C2)中的每一种相继地和以任何顺序熔融共混获得。

    Peracid-stable polymeric containers
    10.
    发明授权
    Peracid-stable polymeric containers 失效
    过酸稳定的聚合物容器

    公开(公告)号:US06558761B1

    公开(公告)日:2003-05-06

    申请号:US09555212

    申请日:2000-06-30

    IPC分类号: B29D2200

    摘要: Containers or linings formed from thermoplastic polymeric materials are provided which are suitable for use in transport and storage of aqueous oxidizing agents and the thermoplastic polymeric materials themselves. The thermoplastic polymeric materials such as polyethylene, forming the container or linings are stabilized against embrittlement caused by interaction with peracid solutions they contact by the incorporation of a thioether and preferably a hindered phenol anti-oxidant. The thioether particularly comprises additionally a hindered phenol and is, for example, a thiobisphenol. The stored peracid solutions exhibited improved storage stability. The containers or linings are particularly suitable for storing or transporting aqueous peracid solutions in locations enjoying relatively high ambient temperatures.

    摘要翻译: 提供由热塑性聚合材料形成的容器或衬里,其适用于运输和储存水性氧化剂和热塑性聚合材料本身。 形成容器或衬里的热塑性聚合材料例如聚乙烯是稳定的,以抵抗由于通过引入硫醚并优选受阻酚抗氧化剂而与其接触的过酸溶液的相互作用引起的脆化。 硫醚还特别包括受阻酚,并且是例如硫代双酚。 储存的过酸溶液表现出改进的储存稳定性。 容器或衬里特别适用于在过高环境温度的地方储存或输送含水过酸溶液。