A norbornene ring-opened polymer which in the molecule has repeating units represented
by the formula (1):
##STR1##
wherein R1 represents Q, R2 represents Q or C(O)R5,
R3 represents Q or C(O)R6, and R4 represents
Q or X—C(O)R7 (wherein Q represents hydrogen, a C1-10
hydrocarbon group, etc.; R5, R6 and R7 each represents
hydroxyl, C1-10 alkoxyl, etc., provided that R6 and R7
may be bonded to each other to constitute oxygen, NH, etc.; X represents
methylene, etc., provided that when R2 is Q, then R3 is C(O)R6
and R4 is X—C(O)R7 and that when R4
is Q, then R2 is C(O)R5, R3 is C(O)R6,
and the configuration of R2 and R3 is trans, and m is 0 or
1), the polymer having a weight-average molecular weight as determined by gel permeation
chromatography of 1,000 to 1,000,000. Also provided is a hydrogenation product
of the norbornene ring-opened polymer. The norbornene ring-opened polymer and the
hydrogenation product are excellent in heat resistance, electrical properties, etc.
