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16 条记录 (耗时 0.025 秒)

    Injection molding method for (meth)acrylate copolymers having tertiary ammonium groups
    11.
    发明授权
    Injection molding method for (meth)acrylate copolymers having tertiary ammonium groups 失效
    具有叔铵基的（甲基）丙烯酸酯共聚物的注射成型方法

    公开(公告)号：US06576255B1

    公开(公告)日：2003-06-10

    申请号：US09889565

    申请日：2001-07-30

    申请人： Hans-Ulrich Petereit ,  Thomas Beckert ,  Manfred Assmus ,  Werner Hoess ,  Wolfgang Fuchs ,  Hartmut Schikowsky

    发明人： Hans-Ulrich Petereit ,  Thomas Beckert ,  Manfred Assmus ,  Werner Hoess ,  Wolfgang Fuchs ,  Hartmut Schikowsky

    IPC分类号： A61K948

    CPC分类号： A61K9/1635 ,  A61J3/071

    摘要： The invention relates to a process for making molded articles by means of injection molding with the process steps of a) melting of a (meth)acrylate copolymer, which is composed of 30 to 80 wt % of radical-polymerized C1 to C4 alkyl esters of acrylic or methacrylic acid and 70 to 20 wt % of (meth)acrylate monomers with a tertiary ammonium group in the alkyl residue, wherein the (meth)acrylate copolymer is present in a mixture with 1 to 70 wt % of a plasticizer and a desiccant in the ratio of 1:1 to 1:20 and also with 0.05 to 5 wt % of a release agent, and further standard additives or adjuvants and if necessary even a pharmaceutical active principle can also be present in the mixture, and before the mixture is melted it has a content of more than 0.5 wt % of low-boiling constituents with a vapor pressure of at least 1.9 bar at 120° C., b) degassing of the mixture in the thermoplastic condition at temperatures of at least 120° C., whereby the content of low-boiling constituents with a vapor pressure of at least 1.9 bar at 120° C. is lowered to at most 0.5 wt % and c) injection of the melted and degassed mixture into the mold cavity of an injection-molding die, wherein the mold cavity has a temperature which lies at least 10° C. below the glass transition temperature of the (meth)acrylate copolymer, cooling of the melt mixture and removal of the obtained molded article from the mold.

    摘要翻译： 本发明涉及一种通过注射成型制备模塑制品的方法，其工艺步骤为：a）熔融（甲基）丙烯酸酯共聚物，其由30至80重量％的自由基聚合的C1至C4烷基酯组成 丙烯酸或甲基丙烯酸和70〜20重量％的烷基残基中具有叔铵基的（甲基）丙烯酸酯单体，其中（甲基）丙烯酸酯共聚物与1至70重量％的增塑剂和干燥剂 以1:1至1:20的比例和0.05至5重量％的脱模剂，并且进一步的标准添加剂或佐剂，并且如果需要甚至药物活性成分也可以存在于混合物中，并且在混合物之前 熔化，其含量大于0.5重量％的低沸点成分，蒸气压在120℃下至少为1.9巴，b）在热塑性条件下，在至少120℃的温度下脱气混合物 ，其中低沸点成分含量为a 在120℃下至少1.9巴的蒸汽压降低至至多0.5重量％，和c）将熔融和脱气的混合物注射到注射成型模具的模腔中，其中模腔具有位于 在（甲基）丙烯酸酯共聚物的玻璃化转变温度以下至少10℃，冷却熔融混合物并从模具中除去得到的模塑制品。

    Poly (meth) acrylamides with improved color stability under thermal stress
    12.
    发明授权
    Poly (meth) acrylamides with improved color stability under thermal stress 失效
    聚（甲基）丙烯酰胺，在热应力下具有改善的颜色稳定性

    公开(公告)号：US06040387A

    公开(公告)日：2000-03-21

    申请号：US75880

    申请日：1998-05-12

    申请人： Klaus Albrecht ,  Werner Hoess ,  Hartmut Schikowsky

    发明人： Klaus Albrecht ,  Werner Hoess ,  Hartmut Schikowsky

    IPC分类号： C08F8/00 ,  C08K3/32 ,  C08L33/00 ,  C08L33/04 ,  C08L33/12 ,  C08L33/24 ,  G08F8/32

    CPC分类号： C08K3/32 ,  C08F8/48

    摘要： Molding compositions MC having a reduced tendency to yellow with thermal stress which consist of a polymer PM containing units of formula I: ##STR1## blending from 0.005-1 wt % of at least one reducing inorganic phosphorus compound IP selected from the group consisting of phosphinic and phosphonic acid and its alkali metal, alkaline-earth metal, aluminum and ammonium salts, wherein the ammonium ion can be substituted with up to four C.sub.1 -C.sub.4 alkyl and/or C.sub.5 -C.sub.8 cycloalkyl groups, with the polymer PM after conclusion of the imidation reaction.

    摘要翻译： 具有降低的热应力黄色趋势的成型组合物MC由含有式I单元的聚合物PM组成：将0.005-1重量％的至少一种还原性无机磷化合物IP共混，所述还原性无机磷化合物IP选自次膦酸和膦酸 及其碱金属，碱土金属，铝和铵盐，其中铵离子可被至多四个C 1 -C 4烷基和/或C 5 -C 8环烷基取代，与酰亚胺化反应结束后的聚合物PM反应。

    Process for producing aqueou dispersions
    16.
    发明申请
    Process for producing aqueou dispersions 有权
    生产阿ou分散体的方法

    公开(公告)号：US20060052515A1

    公开(公告)日：2006-03-09

    申请号：US10539132

    申请日：2003-10-18

    申请人： Klaus Schultes ,  Thomas Suefke ,  Reiner Mueller ,  Hartmut Schikowsky ,  Werner Hoess

    发明人： Klaus Schultes ,  Thomas Suefke ,  Reiner Mueller ,  Hartmut Schikowsky ,  Werner Hoess

    IPC分类号： C08L31/00

    CPC分类号： C08L51/003 ,  C08F285/00 ,  C08L33/10 ,  C08L33/12 ,  C08L33/20 ,  C08L35/06 ,  C08L55/005 ,  C09D133/10 ,  Y10T428/2998 ,  C08F220/12 ,  C08L2666/24 ,  C08L2666/02 ,  C08L2666/04

    摘要： The present invention relates to a process for preparing an aqueous dispersion, by a) forming an initial charge from water and emulsifier, b) adding from 25.0 to 45.0 parts by weight of a first composition comprising A) from 50.0 to 99.9 parts by weight of alkyl methacrylates, B) from 0.0 to 40.0 parts by weight of alkyl acrylates, C) from 0.1 to 10.0 parts by weight of crosslinking monomers and D) from 0.0 to 8.0 parts by weight of styrenic monomers and polymerizing, c) adding from 35.0 to 55.0 parts by weight of a second composition comprising E) from 80.0 to 100.0 parts by weight of (meth) acrylates F) from 0.05 to 10.0 parts by weight of crosslinking monomers and G) from 0.0 to 20.0 parts by weight of styrenic monomers, and polymerizing, d) adding from 10.0 to 30.0 parts by weight of a third composition comprising H) from 50.0 to 100.0 parts by weight of alkyl methacrylates, I) from 0.0 to 40.0 parts by weight of alkyl acrylates and J) from 0.0 to 10.0 parts by weight of styrenic monomers and polymerizing. Features of the process are that e) each polymerization is carried out at a temperature in the range from >60 to

    摘要翻译： 本发明涉及一种制备水性分散体的方法，该方法是：a）从水和乳化剂中形成初始电荷，b）将25.0至45.0重量份的第一组合物加入到包含A）的第一组合物中，所述第一组合物为50.0至99.9重量份的 甲基丙烯酸烷基酯，B）0.0至40.0重量份的丙烯酸烷基酯，C）0.1至10.0重量份的交联单体和D）0.0至8.0重量份的苯乙烯单体并且聚合，c）从35.0加入至 55.0重量份第二组合物，其包含E）80.0至100.0重量份的（甲基）丙烯酸酯F）0.05至10.0重量份的交联单体和G）0.0至20.0重量份的苯乙烯单体，和 聚合，d）从10.0至30.0重量份的第三组合物加入，包含H）50.0至100.0重量份的甲基丙烯酸烷基酯，I）0.0至40.0重量份的丙烯酸烷基酯和J）0.0至10.0重量份 重量的苯乙烯 开口和聚合。 该方法的特征是e）每种聚合在> 60至<90℃的温度范围内进行，f）所有物质的相对比例选择为使得总重量 基于水分散体的总重量，组分A）至J）大于50.0重量％。