Thermoplastic elastomeric compositions and methods of preparing thermoplastic elastomeric compositions
    1.
    发明授权
    Thermoplastic elastomeric compositions and methods of preparing thermoplastic elastomeric compositions 有权
    热塑性弹性体组合物和制备热塑性弹性体组合物的方法

    公开(公告)号:US06933344B2

    公开(公告)日:2005-08-23

    申请号:US10245792

    申请日:2002-09-16

    摘要: Thermoplastic elastomeric compositions and processes for preparing the compositions comprising a blend of polypropylene, styrene-ethylene butylene-styrene copolymer, ethylene-propylene-diene monomer elastomer, linear low density polyethylene, peroxide crosslinking agent and a crosslinking coagent. The peroxide crosslinking agent and crosslinking coagent provide a crosslinking system. The compositions improve melt strength and increase resistance to flow and tear. The composition may further comprise mineral oil, antioxidant, colorant, a processing aid and stabilizer and mixtures thereof. The processes for preparing thermoplastic elastomeric compositions are particularly useful in microcellular injection molding to form articles with improved surface characteristics.

    摘要翻译: 热塑性弹性体组合物和制备包含聚丙烯,苯乙烯 - 乙烯 - 丁烯 - 苯乙烯共聚物,乙烯 - 丙烯 - 二烯单体弹性体,线性低密度聚乙烯,过氧化物交联剂和交联助剂的共混物的组合物的方法。 过氧化物交联剂和交联助剂提供交联体系。 该组合物提高熔体强度并增加流动和撕裂的阻力。 组合物还可以包含矿物油,抗氧化剂,着色剂,加工助剂和稳定剂及其混合物。 制备热塑性弹性体组合物的方法在微细注射成型中特别有用,以形成具有改进的表面特性的制品。

    Thermoplastic polymer composition
    2.
    发明授权
    Thermoplastic polymer composition 失效
    热塑性聚合物组成

    公开(公告)号:US6140418A

    公开(公告)日:2000-10-31

    申请号:US68568

    申请日:1998-05-21

    摘要: Described are a thermoplastic polymer composition comprising (A) a block copolymer formed of a polymer block composed mainly of an aromatic vinyl compound and another polymer block composed mainly of isobutylene; and (B) a crosslinked rubber of at least one rubber selected from natural rubber, diene polymer rubber, olefin polymer rubber, acrylic rubber and fluorine rubber at a weight ratio of 90:10 to 10:90; and molded or formed products and hermetically sealing materials produced using the composition. The above thermoplastic polymer composition is excellent in moldability or formability, gas barrier properties, compression set resistance, hermetically sealing properties, sealing properties, flexibility, mechanical properties, oil resistance, safety, hygienic properties and the like. By melt molding or forming of the composition under heat, general-purpose molded or formed products, hermetically sealing materials such as sealant, packing material or gasket, particularly, stopper or gasket for syringe for the medical use can be produced smoothly.

    摘要翻译: PCT No.PCT / JP97 / 03523 Sec。 371日期1998年5月21日 102(e)日期1998年5月21日PCT 1997年10月2日PCT公布。 第WO98 / 14518号公报 日期1998年4月9日描述了一种热塑性聚合物组合物,其包含(A)由主要由芳族乙烯基化合物组成的聚合物嵌段和主要由异丁烯组成的另一聚合物嵌段形成的嵌段共聚物; 和(B)重量比为90:10至10:90的至少一种选自天然橡胶,二烯聚合物橡胶,烯烃聚合物橡胶,丙烯酸橡胶和氟橡胶的橡胶的交联橡胶; 以及使用该组合物制造的模制或成型产品和气密密封材料。 上述热塑性聚合物组合物的成型性或成形性,阻气性,耐压缩变形性,气密密封性,密封性,挠性,机械性能,耐油性,安全性,卫生性等优异。 通过在加热下熔融模塑或成型组合物,可以顺利地生产通用模制或成形产品,气密密封材料如密封剂,包装材料或垫圈,特别是用于医疗用的注射器的塞子或垫圈。