| 摘要 |
FIELD: production of block copolymers. SUBSTANCE: desired copolymers have formula (A-HD)-Y-(UD)or (UD-A-HD)-Y or (UD)-A-HD)-Y-(UD)or (A-HD)-Y-(HD)or (HD-A-HD)-Y or (HD)-A-HD)-Y-(HD), where A represents unit of vinyl aromatic hydrocarbon with molecular weight 4000-20000, HD is hydrogenated diene unit having conjugated double bonds with molecular weight 10000-100000, Y is polyfunctional combination agent, UD is inhydrogenated diene unit having conjugated double bonds with molecular weight 1000-80000, x is integer from 2 to 20, y is 0 or 1, z is integer from 1 to 10, x+y being 3-30. EFFECT: improves quality of desired compound and compositions on its base. |
