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    • 3. 发明授权
    • Composition with increased stress cracking resistance
    • 具有增加的抗开裂性的组合物
    • US08227549B2
    • 2012-07-24
    • US12600840
    • 2008-04-09
    • Klaus SchultesWerner HoessNils Mehler
    • Klaus SchultesWerner HoessNils Mehler
    • C08L25/02C08L33/02C08L33/04C08L33/14C08L33/18C08L33/20C08L35/02
    • C08L33/08C08L25/12C08L33/10C08L2666/04
    • 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.
    • 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。
    • 5. 发明授权
    • Shaping tool for information carrier disc blanks
    • 信息载体光盘空白的整形工具
    • US06555195B1
    • 2003-04-29
    • US09805777
    • 2001-03-19
    • Michael ZietekHarry SchwarzKlaus AlbrechtRudolf BlassWerner HoessHans-Juergen KressMichael Wicker
    • Michael ZietekHarry SchwarzKlaus AlbrechtRudolf BlassWerner HoessHans-Juergen KressMichael Wicker
    • B32B302
    • G11B7/24B29C45/263B29C45/38B29D17/005B29K2033/12G11B7/2533G11B7/2534G11B7/2585G11B7/263Y10T428/21
    • 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.
    • 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。