摘要:
An olefin ring-opening metathesis polymer is hydrogenated to obtain a hydrogenated product thereof in high yield. A specialized olefin ring-opening metathesis polymer is hydrogenated in the presence of hydrogen using a catalyst consisting of an amine compound and a metallic complex of an organic phosphorous compound represented by the general formula (1): MHkQmTpZq (1) wherein k is an integer of 0 or 1, m is an integer of 1 to 3, p is an integer of 0 or 1, q is an integer of 2 to 4, M is ruthenium, rhodium, osmium, iridium, palladium, platinum or nickel atom, H is hydrogen atom, Q is a halogen atom, T is CO, NO, toluene, acetonitrile or tetrahydrofuran, Z is an organic phosphorous compound represented by the general formula (2): PR′1R′2R′3 (2) wherein P is phosphorous atom, R′1, R′2 and R′3 may be the same or different from each other and are individually selected from the group consisting of a linear, branched or cyclic alkyl group, a linear, branched or cyclic alkenyl group, a linear, branched or cyclic aryl group, a linear, branched or cyclic alkoxy group and a linear, branched or cyclic aryloxy group.
摘要:
Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio ΔOB/ΔF is from 0.001 to 0.250 in which ΔOB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of 633 nm/film thickness (μm) in a stretched film obtained from the optical material, and ΔF represents the amount of a change in the absolute value of the orientation coefficient determined from the dichroic ratio of parallel light intensity I∥ to perpendicular light intensity I⊥, each relative to the orientation direction according to Raman spectroscopy.
摘要:
A fluorine-containing cyclic olefin polymer composition of the present invention includes a fluorine-containing cyclic olefin polymer (A) containing a repeating structural unit represented by the general formula (1) and having a fluorine atom content rate of 40 to 75% by mass; a photocurable compound (B); and a photocuring initiator (C).
摘要:
A fluorine-containing cyclic olefin polymer composition of the present invention includes a fluorine-containing cyclic olefin polymer (A) containing a repeating structural unit represented by the general formula (1) and having a fluorine atom content rate of 40 to 75% by mass; a photocurable compound (B); and a photocuring initiator (C).
摘要:
The present invention discloses a hydrogenated ring-opening metathesis polymer comprising at least unit (A) of formula (1), unit (B) of formula (2) and unit (c) of formula (3): wherein a constituent molar ratio of the structural unit (A)/(B) is from 1/99 to 99/1 and a constituent molar ratio of the structural unit (B)/(C) is from 30/70 to 100/0 and, furthermore, a ratio of a weight-average molecular weight Mw to a number-average molecular weight Mn, that is Mw/Mn is from 1.0 to 2.0.
摘要:
There are herein disclosed a novel metallocene compound represented by the formula [1] and a process for preparing a polyolefin comprising the step of polymerizing an olefin in a catalytic system including the metallocene compound. The metallocene compound of the present invention particularly permits the preparation of a polyolefin having a high stereoregularity and a low molecular weight, and it is industrially extremely valuable: wherein R1 and R2 are each selected from the group consisting of an alkyl group, an aryl group and a silicon-containing alkyl group; M is a metal selected from the group IV of the periodic table; Q is carbon or silicon; X is a halogen, an alkyl group or an anionic ligand, and they may be selected so as to be the same or a combination of different ones; i is an integer of 1 to 10; n is an integer of 1 to 4; m is an integer of 0 to 4; and h is an integer of 1 to 3.