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    • 5. 发明申请
    • GELS COMPRISING BLOCK COPOLYMERS
    • 包含嵌段共聚物的凝胶
    • WO1988000603A2
    • 1988-01-28
    • PCT/GB1987000506
    • 1987-07-17
    • RAYCHEM LIMITEDFRANCIS, Jane, ValerieOVERBERGH, Noel, Marcel, MichielVANSANT, Jan, Lodewijk, M., F., G.
    • RAYCHEM LIMITED
    • C08L53/02
    • C08L53/02C08L2666/14
    • A gel or gelloid liquid-extended polymer composition having (i) an ASTM D217 cone penetration value within the range from 100 to 400 (10 millimetres), (ii) an ASTM D412 ultimate elongation greater than 100 % with substantially elastic deformation to an elongation of at least 100 %, (iii) an ASTM D412 ultimate tensile strength of less than 1 MegaPascal, and (iv) a dynamic storage modulus at 23 C of less than 50000 Pascals; the composition comprising an intimate mixture of a) mainly a block copolymer containing relatively hard blocks and relatively elastomeric blocks; b) additional polymer or copolymer material having at least partial compatibility with, and a higher glass transition, softening or melting temperature than, the hard blocks of the said block copolymer; and c) at least 500 parts by weight of extender liquid per 100 parts by weight of the said block copolymer, which liquid extends and softens the elastomeric blocks of the said block copolymer. SEBS triblock copolymers with polyphenylene ether "alloys" as the added material are preferred, the extender liquid preferably being an oil of substantially zero aromatic content.
    • 具有(i)ASTM D217锥形穿透值在100至400(10 -1毫米)范围内的凝胶或者胶体液体扩展聚合物组合物,(ii)具有大体弹性的ASTM D412极限伸长率大于100% 变形至伸长率至少为100%,(iii)ASTM D412极限拉伸强度小于1兆帕,和(iv)23℃下的动态储能模量小于50000帕斯卡; 该组合物包含a)主要是含有相对硬的嵌段和相对弹性嵌段的嵌段共聚物的紧密混合物; b)与所述嵌段共聚物的硬嵌段具有至少部分相容性和更高的玻璃化转变温度或熔融温度的另外的聚合物或共聚物材料; 和c)每100重量份所述嵌段共聚物至少500重量份的增量液体,该液体延伸并软化所述嵌段共聚物的弹性体嵌段。 作为添加材料的具有聚苯醚“合金”的SEBS三嵌段共聚物是优选的,增量剂液体优选为基本上为零的芳香族含量的油。