Process for the production of thermoplastic synthetic materials
    2.
    发明授权
    Process for the production of thermoplastic synthetic materials 失效
    生产热塑性合成材料的工艺

    公开(公告)号:US4342847A

    公开(公告)日:1982-08-03

    申请号:US103001

    申请日:1979-12-13

    CPC分类号: C08G18/0895 C08L75/04

    摘要: The instant invention is directed to a continuous process for the production of thermoplastic materials, comprising:I. introducing 4 to 65 parts by weight of thermoplastic polymer into an extruder at a first inlet, wherein the temperature within said extruder is such that said thermoplastic polymer melts;II. adding to said thermoplastic polymer through a second inlet 35 to 96 parts by weight of the following polyurethane forming components, such that the total parts by weight of thermoplastic polymer and polyurethane components is 100:(A) organic polyisocyanate; and(B) chain lengthening agent with a molecular weight below 400 containing a hydroxyl group and/or amine group;wherein the ratio of isocyanate groups of component (A) to Zerewitinoff active groups of component (B) is in the range of from 0.90:1 to 1.2:1; andIII. discharging from the extruder the product of the process when the reaction of said polyurethane components (A) and (B) is substantially complete.

    摘要翻译: 本发明涉及用于生产热塑性材料的连续方法,其包括:I.在第一入口处将4至65重量份的热塑性聚合物引入挤出机中,其中所述挤出机内的温度使得所述热塑性聚合物 熔化 二, 通过第二入口加入所述热塑性聚合物35至96重量份的下列聚氨酯形成组分,使得热塑性聚合物和聚氨酯组分的总重量为100:(A)有机多异氰酸酯; 和(B)分子量低于400的含有羟基和/或胺基的链延长剂; 其中组分(A)的异氰酸酯基与组分(B)的Zerewitinoff活性基团的比例在0.90:1至1.2:1的范围内; 和III。 当所述聚氨酯组分(A)和(B)的反应基本上完成时,从挤出机排出该方法的产物。

    Process for the production of polyurethane elastomers
    4.
    发明授权
    Process for the production of polyurethane elastomers 失效
    生产聚氨酯弹性体的方法

    公开(公告)号:US3963679A

    公开(公告)日:1976-06-15

    申请号:US489204

    申请日:1974-07-17

    IPC分类号: C08G18/08 C08G18/10 D01F6/26

    CPC分类号: C08G18/10 C08G18/0895

    摘要: The instant invention is directed to the discovery that it is now possible to obtain high quality, elastomeric polyurethanes or polyureas, even when using highly reactive diamines as chain lengthening agents, without the formation of unwanted irregularities, if the mixture of reactants is exposed to a high velocity gradient by means of vigorously mixing kneading elements at an early phase of the reaction while the viscosity of the reaction mixture is still low. Generally, the viscosity is kept between 100 and 1000 poises and preferably between 200 and 700 poises during the action of the high velocity gradient.

    摘要翻译: 本发明涉及这样的发现,即使当使用高活性二胺作为增链剂时,现在也可以获得高质量的弹性体聚氨酯或聚脲,而不会形成不期望的不规则性,如果反应物的混合物暴露于 通过在反应的早期阶段强力混合捏合元件,同时反应混合物的粘度仍然很低,可以获得高速梯度。 通常,在高速梯度的作用下,粘度保持在100至1000泊之间,优选在200至700泊之间。