METAL CATALYST FOR RING-OPENING POLYMERIZATION OF HETEROCYCLIC COMPOUND
申请人:SANYO CHEMICAL INDUSTRIES, LTD.
公开号:EP1340780A1
公开(公告)日:2003-09-03
The object of the present invention is to provide a metal catalyst which allows the production of a ring-opened polymer available from a heterocyclic compound, having primary terminal heteroatomic groups (terminal hydroxyl groups, in particular) in a ratio exceeding 75%.
The above object can be attained by using a metal catalyst comprising a ligand and a metal atom for ring-opening polymerization of heterocyclic compounds
in which, of all maximum angles (D) meeting the following definition, the smallest maximum angle (Dm) is not larger than 60 degrees;
The maximum angle (D) is the largest angle between an imaginary line (X) and an imaginary line (Y) of all the angles which can be assumed in a metal catalyst comprising a ligand and a metal atom,
said imaginary line (X) means a line perpendicular to an imaginary plane (P) including the respective centers of 3 coordinating atoms among those directly coordinating the metal atom (M) and not substitutable by a reaction substrate (S) and passing through the center of the metal atom,
said imaginary line (Y) means a line linking the center of a non-coordinating atom in the ligand and the center of the metal atom,
and said maximum angle (D) exists in a number equal to the number of non-coordinating atoms, that is, the number of imaginary lines (Y).
A resin composition comprising:
a polymer (1) whose enthalpy of fusion (ΔH) observed within a temperature range of 10°C or higher and lower than 60°C in differential scanning calorimetry is 30 J/g or more; and
a low-molecular-weight compound (3) whose enthalpy of fusion (ΔH) observed within a temperature range of 0°C or higher and lower than 100°C in differential scanning calorimetry is 30 J/g or more and whose molecular weight is 2000 or lower, wherein
a content of the low-molecular-weight compound (3) is 3 parts by weight or more and 1000 parts by weight or less, with respect to 100 parts by weight of the total amount of polymer components contained in the resin composition except the low-molecular-weight compound (3) which is a polymer.
Metal catalyst for ring-opening polymerization of heterocyclic compound
申请人:——
公开号:US20040030093A1
公开(公告)日:2004-02-12
The object of the present invention is to provide a metal catalyst which allows the production of a ring-opened polymer available from a heterocyclic compound, having primary terminal heteroatomic groups (terminal hydroxyl groups, in particular) in a ratio exceeding 75%.
The above object can be attained by using a metal catalyst comprising a ligand and a metal atom for ring-opening polymerization of heterocyclic compounds
in which, of all maximum angles (D) meeting the following definition, the smallest maximum angle (Dm) is not larger than 60 degrees;
The maximum angle (D) is the largest angle between an imaginary line (X) and an imaginary line (Y) of all the angles which can be assumed in a metal catalyst comprising a ligand and a metal atom,
said imaginary line (X) means a line perpendicular to an imaginary plane (P) including the respective centers of 3 coordinating atoms among those directly coordinating the metal atom (M) and not substitutable by a reaction substrate (S) and passing through the center of the metal atom,
said imaginary line (Y) means a line linking the center of a non-coordinating atom in the ligand and the center of the metal atom,
and said maximum angle (D) exists in a number equal to the number of non-coordinating atoms, that is, the number of imaginary lines (Y).