| abstract |
The present invention includes two or more kinds of polymers containing no silicon atoms in the main chain, and at least one of the two or more kinds of polymers is bonded to the polymerization terminal of the main chain and has a group containing a hetero atom. Organizational composition. It is preferred that the group is formed by reacting a terminal treating agent containing a hetero atom with the active end of the polymer backbone to form a bond. It is preferable that the said hetero atom is at least 1 sort (s) chosen from the group which consists of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorus atom, a silicon atom, and a tin atom. As said group, -OH or -NR < 2> is included, As R each independently, a hydrogen atom, a halogen atom, or a C1-C30 monovalent organic group is preferable. |