利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.025 秒)

    Process for the production of hydantoins
    4.
    发明授权
    Process for the production of hydantoins 失效
    乙内酰脲生产工艺

    公开(公告)号：US4465839A

    公开(公告)日：1984-08-14

    申请号：US437968

    申请日：1982-11-01

    申请人： Bernhard Schulte ,  Wolfgang Jakob ,  Willi Dunwald ,  Karl-Heinrich Meyer

    发明人： Bernhard Schulte ,  Wolfgang Jakob ,  Willi Dunwald ,  Karl-Heinrich Meyer

    IPC分类号： C07D233/76 ,  C08G73/06 ,  C07D233/78

    CPC分类号： C08G73/0616 ,  C07D233/76

    摘要： The invention relates to a process for the production of compounds containing at least one hydantoin ring by reacting a carbodiimide with derivatives of succinic acid anhydride corresponding to the following general formula: ##STR1## wherein R.sup.4 represents a halogen atom, an alkyl-carboxy or aryl-carboxy group; or with maleic acid anhydride in the presence of aromatic OH-functional compounds at temperatures of from about 20.degree. to about 250.degree. C., optionally in a solvent and optionally in the presence of a catalyst, and also to the use of the polyhydantoins obtained, where they have high molecular weights, as high temperature-resistant coating compositions, films, powders, adhesives, lacquers or mouldings.

    摘要翻译： 本发明涉及通过使碳二亚胺与对应于下列通式的琥珀酸酐衍生物反应制备含有至少一个乙内酰脲环的化合物的方法：其中R 4表示卤素原子，烷基 - 羧基或芳基 羧基; 或在马来酸酐存在下，在芳族OH官能化合物的存在下，在约20℃至约250℃的温度下，任选地在溶剂中，任选地在催化剂存在下，还可以使用所得的多乙内酰脲 它们具有高分子量，作为耐高温涂料组合物，薄膜，粉末，粘合剂，漆或模制品。

    Process for the continuous production of thermoplastic polyurethane elastomers
    7.
    发明授权
    Process for the continuous production of thermoplastic polyurethane elastomers 失效
    连续生产热塑性聚氨酯弹性体的方法

    公开(公告)号：US5567791A

    公开(公告)日：1996-10-22

    申请号：US391507

    申请日：1995-02-21

    申请人： Wolfgang Br auer ,  Friedemann M uller ,  Herbert Heidingsfeld ,  Bernhard Schulte ,  J urgen Winkler

    发明人： Wolfgang Br auer ,  Friedemann M uller ,  Herbert Heidingsfeld ,  Bernhard Schulte ,  J urgen Winkler

    IPC分类号： C08G18/08 ,  C08G18/16 ,  C08G18/22 ,  C08G18/65 ,  C08G18/18 ,  C08G18/24

    CPC分类号： C08G18/6505 ,  C08G18/0895 ,  C08G18/16 ,  C08G18/22 ,  C08G2250/00

    摘要： A method whereby the properties, particularly the recrystallisation temperature, of thermoplastic polyurethane elastomers, particularly those suitable for processing by extrusion, are kept constant during continuous manufacture in screw-type extruding machines by continuously adding substantially straight-chain hydroxyl-terminated polyols having a molecular weight of 500 to 5000, organic diisoicyanates and diol and optionally triol chain-lengthening agents having a molecular weight of 62 to 500, the molar ratio of polyols to chain-lengthening agents being 1:1 to 1:5, and by continuous addition of a catalyst, wherein the recrystallisation temperature is set at a value at least 2.degree. C. below the value for the corresponding TPU manufactured without a catalyst, and when the set recrystallisation temperature is exceeded, the amount of continuously supplied catalyst is increased, whereas when the value falls below, the amount is decreased so as to maintain the set value, the resulting elastomers and use thereof for extrusion.

    摘要翻译： 通过连续添加具有分子量的基本上直链的羟基封端的多元醇的方法，其中热塑性聚氨酯弹性体的特性，特别是重结晶温度，特别是适用于挤出加工的那些的特性在螺杆型挤出机的连续制造期间保持恒定 重量为500至5000，有机二异氰酸酯和二醇以及任选的三醇链延长剂，其分子量为62至500，多元醇与延长剂的摩尔比为1:1至1:5，并通过连续添加 催化剂，其中重结晶温度设定在低于催化剂制备的相应TPU值至少2℃的值，当超过设定的再结晶温度时，连续供应的催化剂的量增加，而当 该值下降，减少量以便保持设定值，从而产生弹性 omers及其用于挤出的用途。

    Process for preparing TPU molding compositions
    9.
    发明授权
    Process for preparing TPU molding compositions 失效
    制备TPU模塑组合物的方法

    公开(公告)号：US5696205A

    公开(公告)日：1997-12-09

    申请号：US629983

    申请日：1996-04-08

    申请人： Friedemann Muller ,  Wolfgang Brauer ,  Hans-Georg Hoppe ,  Hans-Georg Wussow ,  Herbert Heidingsfeld ,  Willi Meister ,  Bernhard Schulte ,  Jurgen Winkler

    发明人： Friedemann Muller ,  Wolfgang Brauer ,  Hans-Georg Hoppe ,  Hans-Georg Wussow ,  Herbert Heidingsfeld ,  Willi Meister ,  Bernhard Schulte ,  Jurgen Winkler

    IPC分类号： B29C67/24 ,  C08G18/08 ,  C08G18/42 ,  C08G18/65 ,  C08G18/66 ,  C08L75/00 ,  C08L75/04 ,  C08G18/04

    CPC分类号： B29C67/246 ,  C08G18/0895 ,  C08L75/04

    摘要： A process for the continuous production of a thermoplastic molding composition containing a mixture of TPU and a (co)polymer is disclosed. The process comprises (a) introducing into an extruder under time and temperature conditions sufficient to bring about the formation of thermoplastic polyurethane a (co)polymer, and polyurethane-forming components comprising A) an organic diisocyanate, B) a linear polyol having terminal hydroxyl groups and a molecular weight of 500 to 5000, and C) a chain extender having a molecular weight of 60 to 500, and upon completing the formation of said polyurethane (b) discharging the resulting TPU/(co)polymer mixture from the extruder. Importantly, the (co)polymer contains a flow enhancer and the molar ratio of the NCO groups in A) to the groups which react with NCO in B) and C) is 0.9 to 1.2.

    摘要翻译： 公开了一种连续生产含有TPU和（共）聚合物的混合物的热塑性模塑组合物的方法。 该方法包括（a）在足以导致形成热塑性聚氨酯a（共）聚合物的时间和温度条件下引入挤出机，以及包含A）有机二异氰酸酯的聚氨酯形成组分，B）具有末端羟基的线性多元醇 基团，分子量为500至5000，和C）分子量为60至500的扩链剂，并且在完成形成所述聚氨酯（b）时，从所述挤出机中排出所得TPU /（共）聚合物混合物。 重要的是，（共）聚合物含有流动增强剂，A）中的NCO基团与在B）和C）中与NCO反应的基团的摩尔比为0.9至1.2。