Mixing apparatus for chemically reacting fluid components, particularly
polyurethane-forming components
    2.
    发明授权
    Mixing apparatus for chemically reacting fluid components, particularly polyurethane-forming components 失效
    用于使流体组分,特别是聚氨酯形成组分化学反应的混合装置

    公开(公告)号:US4279517A

    公开(公告)日:1981-07-21

    申请号:US67449

    申请日:1979-08-20

    CPC分类号: B29B7/7684 B29B7/7694

    摘要: A mixing apparatus for mixing components that interact chemically, preferably polyurethane-forming components, the apparatus including a control plunger disposed within a housing and movable along a mixing chamber between opposing inlet and return ports, the control plunger having along its wall surface return grooves for connecting the inlet ports to the return ports when the plunger is in a position blocking communication between the inlet ports and the mixing chamber wherein a wall surface portion of the control plunger which in the closing position of the plunger is disposed intermediate the return ports is provided with discrete recesses which mutually overlap in the direction of movement of the control plunger.

    摘要翻译: 一种混合装置,用于混合化学相互作用的组分,优选聚氨酯形成组分,所述装置包括设置在壳体内的控制柱塞,并且可沿着混合室在相对的入口和返回端口之间移动,所述控制柱塞沿其壁表面返回凹槽, 当柱塞处于阻塞入口和混合室之间连通的位置时,将入口端口连接到返回端口,其中设置在柱塞关闭位置中的位于返回端口之间的控制柱塞的壁面部分 具有在控制柱塞的移动方向上相互重叠的分立凹部。

    Process for the manufacture of polyurethane elastomers
    4.
    发明授权
    Process for the manufacture of polyurethane elastomers 失效
    制造聚氨酯弹性体的方法

    公开(公告)号:US4334033A

    公开(公告)日:1982-06-08

    申请号:US194530

    申请日:1980-10-06

    摘要: A process for the manufacture of non-cellular and cellular polyurethane elastomers by(a) preparing a hydroxyl group-containing prepolymer by reacting a higher molecular weight polyhydroxyl compound and optionally a chain extender with an organic diisocyanate at a weight ratio of OH groups to NCO groups of 1.2:1 to 2:1,(b) dividing the prepolymer into two components A and B in a weight ratio of about 80:20 to 20:80,(c) reacting component A with 1,5-naphthylene diisocyanate (NDI) in a weight ratio of OH:NCO groups of about 1:2.5 to 1:12 to produce a terminal NCO group-containing NDI-polyurethane adduct,(d) mixing component B with chain extenders and/or cross-linking agents and/or water, and optionally auxiliaries and additives, and(e) reacting the NDI-polyurethane adduct (from step c) with the mixture from step d.

    摘要翻译: 通过(a)通过使高分子量多羟基化合物和任选的增链剂与有机二异氰酸酯以OH基与NCO的重量比反应制备含羟基的预聚物来制备非细胞和细胞聚氨酯弹性体的方法 基团为1.2:1至2:1,(b)以约80:20至20:80的重量比将预聚物分成两种组分A和B,(c)使组分A与1,5-亚萘基二异氰酸酯( NDI),其中OH:NCO基团的重量比为约1:2.5至1:12,以产生含末端NCO基团的NDI-聚氨酯加合物,(d)将组分B与扩链剂和/或交联剂混合,以及 /或水,以及任选的助剂和添加剂,和(e)将NDI-聚氨酯加合物(来自步骤c)与来自步骤d的混合物反应。