Polymer blends containing a solid elastomeric block copolymer
    4.
    发明授权
    Polymer blends containing a solid elastomeric block copolymer 失效
    含有固体弹性体嵌段共聚物的聚合物共混物

    公开(公告)号:US5470914A

    公开(公告)日:1995-11-28

    申请号:US402666

    申请日:1995-03-13

    摘要: There are disclosed novel, solid, elastomeric block copolymers with improved resistance to cold flow wherein either 1) the terminal blocks are each a polymer (I polymer) of at least one conjugated diene I, e.g., isoprene, which contains at least five carbon atoms with at least one of each pair of double-bonded carbon atoms in the polymerized diene I units being additionally single-bonded to two carbon atoms; at least one middle or interior block is a hydrogenated polybutadiene (B polymer); and at least one middle or interior block is an essentially straight chain polyethylene (E polymer) resulting from the hydrogenation of a polybutadiene composed of at least 80% of 1,4- units; or 2) the terminal blocks are random IB copolymers of at least one diene I as previously defined and hydrogenated butadiene, and at least one middle or interior block is a straight chain polyethylene (E polymer) as previously defined. The hydrogenated butadiene units in the B polymer or random IB polymer blocks are composed of no more than about 65% of 1,4- units and at least about 35% of 1,2- units.The foregoing block copolymers may be prepared by selectively hydrogenating substantially all the butadiene units of a precursor block copolymer wherein the precursor blocks of the straight chain polyethylene blocks units are polybutadiene blocks in which at least about 80% of the butadiene units are 1,4- units. A sufficient number of I units in the I polymer blocks or random IB copolymer blocks retain their unsaturation on selective hydrogenation to enable the vulcanization of the block copolymer.

    摘要翻译: 公开了具有改进的抗冷流阻力的新型固体弹性体嵌段共聚物,其中1)末端嵌段各自为至少一种共轭二烯I的聚合物(I聚合物),例如含有至少5个碳原子的异戊二烯 聚合二烯I单元中的每对双键碳原子中的至少一个另外单键键合到两个碳原子上; 至少一个中间或内部嵌段是氢化聚丁二烯(B聚合物); 并且至少一个中间或内部嵌段是由至少80%的1,4-单元组成的聚丁二烯氢化得到的基本上是直链聚乙烯(E聚合物); 或2)末端嵌段是如先前定义的至少一种二烯I和氢化丁二烯的无规IB共聚物,并且至少一个中间或内部嵌段是如前所定义的直链聚乙烯(E聚合物)。 B聚合物或无规IB聚合物嵌段中的氢化丁二烯单元由不超过约65%的1,4-单元和至少约35%的1,2-单元组成。 上述嵌段共聚物可以通过选择性氢化前体嵌段共聚物的所有丁二烯单元来制备,其中直链聚乙烯嵌段单元的前体嵌段是聚丁二烯嵌段,其中至少约80%的丁二烯单元是1,4-丁二烯单元, 单位。 I聚合物嵌段或无规IB共聚物嵌段中足够数量的I单元在选择性氢化时保持不饱和键,以使嵌段共聚物硫化。

    Solid elastomeric block copolymers
    5.
    发明授权
    Solid elastomeric block copolymers 失效
    固体弹性体嵌段共聚物

    公开(公告)号:US5399629A

    公开(公告)日:1995-03-21

    申请号:US282297

    申请日:1994-07-29

    摘要: There are disclosed novel, solid, elastomeric block copolymers with improved resistance to cold flow wherein either 1) the terminal blocks are each a polymer (I polymer) of at least one conjugated diene I, e.g., isoprene, which contains at least five carbon atoms with at least one of each pair of double-bonded carbon atoms in the polymerized diene I units being additionally single-bonded to two carbon atoms; at least one middle or interior block is a hydrogenated polybutadiene (B polymer); and at least one middle or interior block is an essentially straight chain polyethylene (E polymer) resulting from the hydrogenation of a polybutadiene composed of at least 80% of 1,4- units; or 2) the terminal blocks are random IB copolymers of at least one diene I as previously defined and hydrogenated butadiene, and at least one middle or interior block is a straight chain polyethylene (E polymer) as previously defined. The hydrogenated butadiene units in the B polymer or random IB polymer blocks are composed of no more than about 65% of 1,4- units and at least about 35% of 1,2- units.The foregoing block copolymers may be prepared by selectively hydrogenating substantially all the butadiene units of a precursor block copolymer wherein the precursor blocks of the straight chain polyethylene blocks units are polybutadiene blocks in which at least about 80% of the butadiene units are 1,4- units. A sufficient number of I units in the I polymer blocks or random IB copolymer blocks retain their unsaturation on selective hydrogenation to enable the vulcanization of the block copolymer

    摘要翻译: 公开了具有改进的抗冷流阻力的新型固体弹性体嵌段共聚物,其中1)末端嵌段各自为至少一种共轭二烯I的聚合物(I聚合物),例如含有至少5个碳原子的异戊二烯 聚合二烯I单元中的每对双键碳原子中的至少一个另外单键键合到两个碳原子上; 至少一个中间或内部嵌段是氢化聚丁二烯(B聚合物); 并且至少一个中间或内部嵌段是由至少80%的1,4-单元组成的聚丁二烯氢化得到的基本上是直链聚乙烯(E聚合物); 或2)末端嵌段是如先前定义的至少一种二烯I和氢化丁二烯的无规IB共聚物,并且至少一个中间或内部嵌段是如前所定义的直链聚乙烯(E聚合物)。 B聚合物或无规IB聚合物嵌段中的氢化丁二烯单元由不超过约65%的1,4-单元和至少约35%的1,2-单元组成。 上述嵌段共聚物可以通过选择性氢化前体嵌段共聚物的所有丁二烯单元来制备,其中直链聚乙烯嵌段单元的前体嵌段是聚丁二烯嵌段,其中至少约80%的丁二烯单元是1,4-丁二烯单元, 单位。 I聚合物嵌段或无规IB共聚物嵌段中足够数量的I单元在选择性氢化时保持其不饱和键,以使嵌段共聚物

    Solid block elastomeric copolymers
    6.
    发明授权
    Solid block elastomeric copolymers 失效
    固体块弹性共聚物

    公开(公告)号:US5306780A

    公开(公告)日:1994-04-26

    申请号:US29507

    申请日:1993-03-11

    摘要: There is disclosed a linear block copolymer comprising at least one triblock I-B-I, wherein I is a block of a polymerized conjugated diene of at least 5 carbon atoms, such as isoprene, and B is a block of a polymer of a conjugated diene, different from that of formula (1), of at least 4 carbon atoms, such as 1,3-butadiene. The B block is selectively hydrogenated, while each of the I blocks retains a sufficient amount of its original unsaturation to vulcanize the copolymer. There is also disclosed an alternative linear block copolymer containing at least one triblock of the first polymer block made from an aryl-substituted olefin, such as styrene, and the conjugated diene used to polymerize the block I, the second middle polymer block of the diene used to polymerize the block B, and the third polymer block which is the same as the first polymer block. In this alternative copolymer, the middle block is also selectively hydrogenated, thereby leaving the terminal polymer blocks with a sufficient amount of double bonds to vulcanize the copolymer. The polymers can be crosslinked or functionalized through the terminal blocks containing the vinyl unsaturation. There are also disclosed random and star-branched block and random copolymers made from the same monomers as the linear block copolymers.Also disclosed are methods of producing and selectively hydrogenating the polymers.

    摘要翻译: 公开了包含至少一个三嵌段IBI的线性嵌段共聚物,其中I是至少5个碳原子的聚合共轭二烯的嵌段,例如异戊二烯,B是共轭二烯的聚合物的嵌段,不同于 具有至少4个碳原子的式(1)的化合物,例如1,3-丁二烯。 B嵌段被选择性地氢化,而每个I嵌段保留足够量的其原始不饱和度以硫化共聚物。 还公开了一种替代的线性嵌段共聚物,其含有由芳基取代的烯烃如苯乙烯制成的第一聚合物嵌段的至少一个三嵌段,和用于聚合嵌段I的共轭二烯,二烯的第二中间聚合物嵌段 用于聚合嵌段B和与第一聚合物嵌段相同的第三聚合物嵌段。 在该替代共聚物中,中间嵌段也被选择性氢化,从而使末端聚合​​物嵌段具有足够量的双键来硫化共聚物。 聚合物可以通过含有乙烯基不饱和键的末端嵌段交联或官能化。 还公开了由与线性嵌段共聚物相同的单体制备的无规和星形支链嵌段和无规共聚物。 还公开了制备和选择性氢化聚合物的方法。