Method for imidizing an alkyl methacrylate polymer
    1.
    发明授权
    Method for imidizing an alkyl methacrylate polymer 失效
    甲基丙烯酸烷基酯聚合物的制备方法

    公开(公告)号:US5110877A

    公开(公告)日:1992-05-05

    申请号:US650399

    申请日:1991-02-01

    CPC分类号: C08F8/48

    摘要: In a process for imidizing an alkyl methacrylate polymer by reaction with a nitrogen-containing imidizing agent, the formation of carboxyl and anhydride groups is suppressed when a portion of the imidizing agent is added only after the previously added imidizing agent has been reacted at least partially, and particularly when the reaction with the imidizing agent is terminated before the polymer has been completely imidized.

    摘要翻译: 在通过与含氮酰亚胺化试剂反应来酰亚胺化甲基丙烯酸烷基酯聚合物的方法中,仅当先前加入的酰亚胺化剂至少部分反应之后,仅加入一部分酰亚胺化剂时,羧基和酸酐基团的形成被抑制 特别是当聚酰胺完全酰亚胺化之前,与酰亚胺化剂的反应终止。

    Two-step method for dehydrating plastic dispersions
    2.
    发明授权
    Two-step method for dehydrating plastic dispersions 失效
    脱水塑料分散体的两步法

    公开(公告)号:US06287470B1

    公开(公告)日:2001-09-11

    申请号:US09403770

    申请日:1999-12-13

    IPC分类号: B01D1900

    摘要: The invention relates to a method for dehydrating a two-phase liquid mixture consisting of a thermoplastic synthetic melt phase and an aqueous phase, comprising the following steps: a) coagulation of the two-phase liquid mixture in a first extruder; b) dehydration of the coagulate in a twin screw extruder with a de-watering zone and screws working in an opposite direction; c) separation of constituents by degasifying. The inventive method is characterized in that a single screw extruder or a twin screw extruder with screws working in the same direction is used as a first extruder in step a).

    摘要翻译: 本发明涉及一种使由热塑性合成熔融相和水相组成的两相液体混合物脱水的方法,包括以下步骤:a)在第一挤出机中使两相液体混合物凝结; b)在具有脱水区域的双螺杆挤出机中将凝结物脱水并沿相反方向工作的螺杆; c)通过脱气分离成分。 本发明的方法的特征在于,在步骤a)中使用具有沿相同方向工作的螺杆的单螺杆挤出机或双螺杆挤出机作为第一挤出机。

    Homogeneous mixture of polymethacrylimide polymers
    3.
    发明授权
    Homogeneous mixture of polymethacrylimide polymers 失效
    聚异丁烯酰胺聚合物均质混合物

    公开(公告)号:US5135985A

    公开(公告)日:1992-08-04

    申请号:US698291

    申请日:1991-05-10

    IPC分类号: C08L33/00 C08L33/24

    CPC分类号: C08L33/24

    摘要: Homogeneous polymer mixtures of polymethacrylimides consist of a component (A), composed of from 30 to 90 percent by weight of methacrylalkylimide units and from 3.5 to 10 percent by weight of methacrylic acid units, and of a component (B1) or (B2) having from 10 to 50 percent by weight more methacrylalkylimide units than component (A), component (B1) having a degree of imidization of less than 95 percent and containing from 3.5 to 10 percent by weight of methacrylic acid units, and component (B2) having a degree of imidization greater than 95 percent and containing less than 3.5 percent by weight of methacrylic acid units.

    摘要翻译: 聚甲基丙烯酰亚胺的均匀聚合物混合物由组分(A)组成,组分(A)由30至90重量%的甲基丙烯酸烷基酰亚胺单元和3.5至10重量%的甲基丙烯酸单元组成,组分(B1)或(B2) 10重量%以上50重量%以上的成分(A),亚胺化度小于95重量%,含有3.5〜10重量%甲基丙烯酸单元的成分(B1),和(B2)成分 亚胺化程度大于95%,含有少于3.5%(重量)的甲基丙烯酸单元。

    Method for injection molding shaped resin bodies having a scratch
resistant surface
    4.
    发明授权
    Method for injection molding shaped resin bodies having a scratch resistant surface 失效
    用于注塑成型的具有防刮表面的树脂体的方法

    公开(公告)号:US4911875A

    公开(公告)日:1990-03-27

    申请号:US323046

    申请日:1989-03-10

    摘要: Injection molded parts having a scratch resistant surface are produced by applying a liquid mixture of at least one monomer susceptible of free radical polymerization and having more than one polymerizable double bond and of at least one free radical forming initiator to the forming surface of an injection mold, polymerizing the mixture at least partially, and then injecting a thermoplastic or duroplastic molding composition into the closed mold.

    摘要翻译: 具有耐擦伤表面的注射成型品通过施加至少部分聚合至少一种可通过自由基聚合并含有多于一个可聚合双键的单体的液体混合物和至少一种形成 自由基进入注塑模具的模制表面,以便形成耐刮擦涂层,随后将热塑性或热固性模塑组合物注入封闭的注模中。

    Process for the short-time treatment of a plastic melt with a liquid
treatment agent and the plastic thus produced
    5.
    发明授权
    Process for the short-time treatment of a plastic melt with a liquid treatment agent and the plastic thus produced 失效
    用液体处理剂短时间处理塑料熔体的方法和由此生产的塑料

    公开(公告)号:US5548033A

    公开(公告)日:1996-08-20

    申请号:US379999

    申请日:1995-01-27

    CPC分类号: B29C47/527 B29C47/0009

    摘要: A plastic melt is treated for a short-time with a liquid treatment agent under pressure, it is divided into defined subquantities, individual subquantities are brought into contact with a treatment agent and combined for a residence time of less than one second with portions of at least one other subquantity, and portions of the mixture thus formed are separated and combined with another subquantity; the steps of dividing and combining the mixture are repeated several times at intervals of less than one second until an intimate mixture of the plastic melt and the treatment agent has formed, allowing the preparation of especially homogeneously structured thermoplastic materials, e.g., poly(methacrylalkylimide) plastics, which are compatible with poly(methyl methacrylate).

    摘要翻译: 塑料熔体在压力下用液体处理剂短时间处理,分为限定的量级,各个次要物质与处理剂接触并结合使用少于1秒的停留时间,其中部分 至少一个其他的次数,并且如此形成的混合物的部分与另一个次级分离并组合; 将混合物分离和组合的步骤以小于1秒的间隔重复数次,直到形成塑料熔体和处理剂的紧密混合物,允许制备特别均匀结构的热塑性材料,例如聚(甲基丙烯酸烷基酯酰亚胺) 塑料,其与聚(甲基丙烯酸甲酯)相容。

    Use of polyalkyl(meth)acrylate bead polymers and moulding material for producing extruded moulded parts with a matt surface
    7.
    发明授权
    Use of polyalkyl(meth)acrylate bead polymers and moulding material for producing extruded moulded parts with a matt surface 有权
    使用聚(甲基)丙烯酸烷基酯珠粒聚合物和用于生产具有无光泽表面的挤出成型部件的成型材料

    公开(公告)号:US08399560B2

    公开(公告)日:2013-03-19

    申请号:US11661651

    申请日:2005-08-30

    摘要: The invention relates to the use of polyalkyl(meth)acrylate bead polymers with an average particle size V50 that ranges between 30 and 70 μm for improving the stress cracking resistance of moulding materials containing polyalkyl(meth)acrylate. The invention also relates to moulding materials comprising: a) at least 50 wt. % of an impact resistance modifying agent, which contains at least one polyalkyl(meth)acrylate phase; b) at least 8 wt. % of a polyalkyl(meth)acrylate bead polymer with an average particle size V50 that ranges between 30 and 70 μm; and c) between 0 and 42 wt. % of a polyalkyl(meth)acrylate with a molecular weight ranging between 20,000 and 350,000 g/mol, whereby the wt. % of the components a) to c) amounts to 100 wt. %, and to moulded bodies that can be obtained from said materials.

    摘要翻译: 本发明涉及平均粒度V50为30〜70μm的聚(甲基)丙烯酸烷基酯聚合物(聚甲基丙烯酸烷基酯)聚合物用于提高含(甲基)丙烯酸聚烷基酯的成型材料的抗应力开裂性。 本发明还涉及成型材料,其包含:a)至少50wt。 %的耐冲击改性剂,其含有至少一种(甲基)丙烯酸烷基酯相; b)至少8wt。 %的平均粒度V50为(30〜70μm)的(甲基)丙烯酸烷基酯聚合的(甲基)丙烯酸烷基酯聚合物; 和c)0至42wt。 %的分子量在20,000和350,000g / mol之间的聚(甲基)丙烯酸烷基酯,其中wt。 组分a)至c)的%相当于100wt。 %,以及可以从所述材料获得的成型体。

    Composition with increased stress cracking resistance
    8.
    发明授权
    Composition with increased stress cracking resistance 失效
    具有增加的抗开裂性的组合物

    公开(公告)号:US08227549B2

    公开(公告)日:2012-07-24

    申请号:US12600840

    申请日:2008-04-09

    摘要: Composition containing, based in each case on its total weight, A) 50.0% by weight to 99.5% by weight of at least one (meth)acrylate (co)polymer and B) 0.5% by weight to 50.0% by weight of at least one copolymer obtainable by polymerization of a monomer mixture comprising i. 70% by weight to 92% by weight of a vinylaromatic monomer and ii. 8% by weight to 30% by weight of acrylonitrile or methacrylonitrile or mixtures thereof and iii. 0% by weight to 22% by weight of at least one further monomer, the composition having a haze according to ASTM D1003 of less than 2.0% at 23° C. and a haze according to ASTM D1003 of less than 4.0% at 40° C. and the composition containing at least one (meth)acrylate (co)polymer a) having a solution viscosity in chloroform at 25° C. (ISO 1628—part 6) of greater than 55 ml/g. The moldings obtainable from the composition are distinguished in particular by improved stress cracking resistance and are suitable in particular for coverings, finishes or films.

    摘要翻译: 包含基于每种情况的总重量的组合物A)50.0重量%至99.5重量%的至少一种(甲基)丙烯酸酯(共)聚合物,和B)至少0.5重量%至50.0重量% 一种共聚物,其通过单体混合物的聚合获得,所述单体混合物包含i。 70重量%至92重量%的乙烯基芳族单体,和ii。 8重量%至30重量%的丙烯腈或甲基丙烯腈或其混合物,iii。 0重量%至22重量%的至少一种其它单体,该组合物在-23℃下具有根据ASTM D1003的雾度小于2.0%,并且根据ASTM D1003的雾度小于4.0% 40℃,组合物含有至少一种在-25℃(ISO 1628-第6部分)中溶液粘度在55ml / g以上的(甲基)丙烯酸酯(共)聚合物)a)。 可从组合物获得的模制品特别是通过改进的耐应力开裂性来区分,特别适用于覆盖物,表面处理剂或膜。

    Shaping tool for information carrier disc blanks
    10.
    发明授权
    Shaping tool for information carrier disc blanks 失效
    信息载体光盘空白的整形工具

    公开(公告)号:US06555195B1

    公开(公告)日:2003-04-29

    申请号:US09805777

    申请日:2001-03-19

    IPC分类号: B32B302

    摘要: The invention relates to a shaping tool for the injection molding or injection compression of information carrier disc blanks (11) made of polymethacrylate plastic which is suited as a component of an injection molding or injection compression machine. The shaping tool is comprised of two mold parts (1, 2), whereby one mold part (1) contains a bottom part (8) of a mold with the information data and, together with the second mold part (2), forms a cavity for the one information carrier blank and one sprue bush (4) for a sprue piece (5) in the tool having a concentrically positioned feed orifice (6). In addition, the tool comprises a impact cylinder (9) for shearing the sprue piece (5) and has an ejector pin (10). The invention is characterized in that the injection gap (SP) between the feed orifice (6) of the sprue piece (5) and the information carrier disc blank (11) is less than 0.3 mm. In addition, the cutting gap (SN) between the edge of the impact cylinder (9) and the information carrier disc blank (11) is less than 0.2 mm.

    摘要翻译: 本发明涉及一种用于注射成型或注射压缩由聚甲基丙烯酸酯塑料制成的信息载体盘坯(11)的成形工具,其适合作为注射成型或注射压缩机的组件。 成型工具由两个模具部件(1,2)组成,其中一个模具部件(1)包含具有信息数据的模具的底部(8),并且与第二模具部件(2)一起形成 用于一个信息载体坯料的空腔和用于工具中的直浇道(5)的一个浇道衬套(4),其具有同心定位的进料孔(6)。 另外,该工具包括用于剪切浇道(5)并具有推顶销(10)的冲击缸(9)。 本发明的特征在于,浇道(5)的进料孔(6)和信息载体盘坯(11)之间的喷射间隙(SP)小于0.3mm。 此外,冲击气缸(9)的边缘与信息载体盘坯(11)之间的切割间隙(SN)小于0.2mm。