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    • 7. 发明专利
    • Transparent mixture of linear styrene-butadiene block copolymer
    • 线性苯乙烯 - 丁二烯嵌段共聚物的透明混合物
    • JP2006169522A
    • 2006-06-29
    • JP2005355863
    • 2005-12-09
    • Basf Agビーエーエスエフ アクチェンゲゼルシャフトBASF Aktiengesellschaft
    • KNOLL KONRADWAGNER DANIELKOCH JUERGENMERKEL PETER
    • C08F297/04C08F8/04C08L53/02
    • C08L53/025C08F297/04C08L51/003C08L53/02C08L2666/24C08L2666/02C08L53/00
    • PROBLEM TO BE SOLVED: To provide a transparent mixture comprising a styrene-butadiene block copolymer and a polystyrene, which has high toughness and excellent transparency even when the polystyrene content in the mixture is relatively high, wherein the above-noted properties have been obtained by avoiding conventional disadvantages. SOLUTION: This mixture comprises a linear block copolymer comprising a vinyl aromatic monomer and a diene, which has structures of (I) S 1 -B 1 -S 2 and (II) B 2 -S 3 , wherein S 1 represents a block comprising a vinyl aromatic monomer having a number average molecular weight (Mn) of in a range of from 40,000 to 100,000 g/mol; S 2 and S 3 respectively represent a block comprising a vinyl aromatic monomer having a number average molecular weight (Mn) of in a range of from 5,000 to 20,000 g/mol; and B 1 and B 2 respectively represent either one or more block comprising a diene, or a block of a copolymer comprising a diene and a vinyl aromatic monomer having a number average molecular weight (Mn) of in a range of from 15,000 to 100,000 g/mol, and wherein the ratio of (I)/(II) in the block copolymer is in a range of from 0.5 to 10. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供包含苯乙烯 - 丁二烯嵌段共聚物和聚苯乙烯的透明混合物,即使当混合物中的聚苯乙烯含量相对较高时,其具有高韧性和优异的透明性,其中上述性质具有 通过避免常规缺点得到。 解决方案:该混合物包含包含乙烯基芳族单体和二烯的线性嵌段共聚物,其具有(I)S 1 -S < SB> 2 和(II)B -S 3 ,其中S 1 表示包含乙烯基芳族单体的嵌段, 数均分子量(Mn)在40,000至100,000g / mol的范围内; S 2 和S 3 分别表示包含数均分子量(Mn)在5,000至20,000g / mol范围内的乙烯基芳族单体的嵌段; 和B 1 和B 2 分别表示一个或多个包含二烯的嵌段或包含二烯和包含数均分子量的乙烯基芳族单体的共聚物嵌段 重量(Mn)在15,000至100,000g / mol的范围内,并且其中嵌段共聚物中的(I)/(II)的比率在0.5至10的范围内。 )2006年,日本特许厅和NCIPI