| 摘要 |
Tetrablock polymers having the configuration B-A1-C-A2 and C-A1-B-A2 and their hydrogenated counterparts are disclosed, wherein B is a low vinyl poly 1,3-butadiene block, A1 and A2 can be the same or different polymerized blocks of a monovinylarene monomer having 8-14 carbon atoms per molecule, and C is a block selected from the group consisting of polymerized blocks of a conjugated diene having 4-12 carbon atoms per molecule in which there is on the average at least one side chain branch for every 10 carbon atoms of the polymeric backbone. The hydrogenated tetrablock polymers have the configuration B'-A1-C'-A2 and C'-A1-B'-A2 in which B' is hydrogenated B and C' is hydrogenated block C.
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