PROCESS FOR PREPARING POLYAMIDES
    2.
    发明申请
    PROCESS FOR PREPARING POLYAMIDES 有权
    制备聚氨酯的方法

    公开(公告)号:US20120245308A1

    公开(公告)日:2012-09-27

    申请号:US13514364

    申请日:2010-12-03

    IPC分类号: C08G69/28 C08G69/26

    CPC分类号: C08G69/265 C08G69/28

    摘要: The present invention relates to a process for preparing a polyamide based on dicarboxylic acids and diamines, comprising the following stages: A) providing an aqueous monomer mixture composed of dicarboxylic acids and diamines, where the molar ratio of dicarboxylic acids to diamines is adjusted such that, at the outlet of stage C), there is a molar deficiency of dicarboxylic acids or diamines of 1 to 10 mol%, based on the respective other component, B) transferring the aqueous mixture from stage A) into a continuous evaporator reactor in which diamines and dicarboxylic acids are converted at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar, C) transferring the mixture from stage B) into a separator which is operated at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar with removal of gaseous components, D) transferring the mixture from stage C) together with diamine or dicarboxylic acid in an amount suitable for compensation for the molar deficiency into a tubular reactor which is operated at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar, for a residence time in the range from 10 seconds to 30 minutes, E) transferring the mixture from stage D) into an extruder which is operated at a temperature in the range from 150 to 400° C. for a residence time in the range from 10 seconds to 30 minutes with removal of gaseous components through venting orifices.

    摘要翻译: 本发明涉及一种制备基于二羧酸和二胺的聚酰胺的方法,包括以下步骤:A)提供由二羧酸和二胺组成的含水单体混合物,其中二羧酸与二胺的摩尔比被调整为使得 ,在阶段C)的出口处,基于各自的其它组分,存在摩尔不足的二羧酸或二胺的1至10摩尔%,B)将水性混合物从阶段A)转移到连续的蒸发器反应器中,其中 二胺和二羧酸在100至370℃的温度和1至50巴的压力范围内转化,C)将混合物从阶段B)转移到分离器中,该分离器在 范围为100至370℃,压力为1至50巴,除去气态组分,D)将混合物与阶段C)一起转移至二胺或二羧酸的量 适合于将摩尔不足补偿到在100至370℃的温度和1至50巴的压力范围内操作的管式反应器中,停留时间在10秒至 30分钟,E)将混合物从阶段D)转移到挤出机中,该挤出机在150-400℃的温度下操作,停留时间在10秒至30分钟之间,同时除去气体成分 通风孔。

    Semi-aromatic, semi-crystalline copolyamides
    6.
    发明授权
    Semi-aromatic, semi-crystalline copolyamides 有权
    半芳香族半结晶共聚酰胺

    公开(公告)号:US09109085B2

    公开(公告)日:2015-08-18

    申请号:US13514445

    申请日:2010-12-07

    IPC分类号: C08G69/26 C08L77/06

    摘要: Semiaromatic, semicrystalline copolyamide molding compositions, comprising A) from 35 to 100% by weight of a copolyamide composed of a1) from 35 to 69% by weight of units which derive from hexamethylenediamine and from an aromatic dicarboxylic acid having from 8 to 16 carbon atoms, a2) from 31 to 65% by weight of units which derive from 3,3′-dimethyl-4,4′-diaminodicyclohexylmethane and from terephthalic acid, a3) from 0 to 30% by weight of units of a semicrystalline polyamide different from a1) and a2), B) from 0 to 65% by weight of further additives, where the total of the percentages by weight of A) and B) is 100%.

    摘要翻译: 半芳族半结晶共聚酰胺模塑组合物,其包含A)35-100%重量的共聚酰胺,该共聚酰胺由a1- 35-69%(重量)衍生自六亚甲基二胺的单元和具有8至16个碳原子的芳族二羧酸组成 ,a2)31至65重量%的衍生自3,3'-二甲基-4,4'-二氨基二环己基甲烷和来自对苯二甲酸的单元,a3)0至30重量%的半结晶聚酰胺单元不同于 a1)和a2),B)0至65重量%的其它添加剂,其中A)和B)的重量百分比的总和为100%。

    PROCESS FOR PRODUCING MOLDINGS
    8.
    发明申请
    PROCESS FOR PRODUCING MOLDINGS 审中-公开
    生产模具的工艺

    公开(公告)号:US20130221555A1

    公开(公告)日:2013-08-29

    申请号:US13594202

    申请日:2012-08-24

    IPC分类号: B29C45/00

    摘要: The invention relates to a process for producing moldings made of a fiber-reinforced polymer, comprising the following steps:(a) inserting a fiber structure into a mold and injecting a polymer precursor compound around the fiber structure or saturating a fiber structure with a polymer precursor compound and inserting the saturated fiber structure into a mold, where the viscosity of the polymer precursor compound is at most 2000 mPas,(b) polymerizing the polymer precursor compound to give the polymer, to produce the molding,(c) removing the molding from the mold as soon as the polymerization process has proceeded at least to the extent that the molding is in essence dimensionally stable.

    摘要翻译: 本发明涉及一种用于生产由纤维增强聚合物制成的模制品的方法,包括以下步骤:(a)将纤维结构插入模具中,并将聚合物前体化合物注入纤维结构周围或用聚合物饱和纤维结构 前体化合物并将饱和纤维结构插入模具中,其中聚合物前体化合物的粘度为至多2000mPas,(b)使聚合物前体化合物聚合以产生聚合物,以生产模制品,(c) 一旦聚合过程至少进行到模制件本质上尺寸稳定的程度,就从模具中取出。

    BATCH PROCESS FOR PREPARING POLYAMIDES
    10.
    发明申请
    BATCH PROCESS FOR PREPARING POLYAMIDES 有权
    批量制备聚氨酯的方法

    公开(公告)号:US20110144300A1

    公开(公告)日:2011-06-16

    申请号:US13058779

    申请日:2009-08-14

    IPC分类号: C08G69/28

    摘要: Polyamides based on dicarboxylic acids and on diamines are produced in a batch process by 1) feeding the entire amount of monomer composed of dicarboxylic acids, of diamines, and, if appropriate, of further polyamide-forming monomers, in the desired stoichiometry, in a closed stirred-tank reactor, 2) heating the monomer mixture in the stirred-tank reactor, with stirring, and with setting of a certain pressure, to a desired reaction temperature for the production of a prepolymer, 3) if appropriate, completely or partially depressurizing the reaction mixture from stage 2), 4) if appropriate, carrying out further thermal treatment of the reaction mixture from stage 2) or 3), and 5) reacting the reaction mixture from stage 2), 3), or 4) in the melt in a vented extruder for further increase of the molecular weight, with discharge of water vapor, and without use of additional polyamide-forming monomers or of polyamides.

    摘要翻译: 以分批方法制备基于二羧酸和二胺的聚酰胺,其通过以下方式制备:以所需的化学计量,在所需的化学计量中,将全部量的由二羧酸,二胺组成的单体,以及如果合适的话,将其加入到另外的聚酰胺形成单体中 2)在搅拌下将搅拌釜中的单体混合物加热至设定一定压力至预期的反应温度,3)如果合适的话,完全或部分地 使反应混合物从阶段2)减压),4)如果合适,进行反应混合物从阶段2)或3)的进一步热处理,和5)使反应混合物从步骤2),3)或4)在 在排气挤出机中的熔体进一步增加分子量,排出水蒸气,并且不使用额外的聚酰胺形成单体或聚酰胺。