Method for producing crystalline polyoxyalkylene polyol, and resin obtained by using the same as raw material
AssigneeSanyo Chemical Industries, Ltd.
InventorsHironobu Tokunaga, Ichiro Yamada, Yuko Hamano
Life of this patent
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Abstract
The present invention has its object to produce a highly reactive crystalline polyoxyalkylene polyol with a very high isotacticity at low cost, and provide polyurethane resins, and polyester resins which are excellent in sharp meltability. The present invention relates to a method for producing a crystalline polyoxyalkylene polyol having a number average molecular weight of 500 to 20,000 including performing ring-opening polymerization of an alkylene oxide (a) in the presence of a salen complex (B), the crystalline polyoxyalkylene polyol (A), and a polyurethane resin and a polyester resin produced by the crystalline polyoxyalkylene polyol (A).
Claims12
A polyester resin (PE) produced via reaction of a crystalline polyoxyalkylene polyol, and a polycarboxylic acid (F), the crystalline polyoxyalkylene polyol having a number average molecular weight of 500 to 20,000 and produced by a method comprising:
- performing ring-opening polymerization of an alkylene oxide (a) with a salen complex used as a catalyst (B) in a condition that an amount of the salen complex is 6 to 100 parts by weight with respect to 100 parts by weight of said alkylene oxide (a), the salen complex being represented by the formula (1):
- wherein R1 to R4 each independently represent a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any pair of the R1 to R4 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- R5 to R12 each independently represent a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any adjacent pair of the R5 to R12 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- M represents a metal atom belonging to any one of groups III to XIII;
- L represents a ligand;
- n represents an integer of 1 or 2, and when n is 2, one ligand L of two Ls may be the same as or different from the other,
- or the formula (2):
- wherein R13 to R16 each independently represent a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any pair of the R13 to R16 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- and
- R5 to R12, M, L, and n represent the same as defined for the formula (1).
A polyester resin (PE) produced via reaction of a crystalline polyoxyalkylene polyol, and a polycarboxylic acid (F), the crystalline polyoxyalkylene polyol having a number average molecular weight of 500 to 20,000 and produced by a method comprising:
- performing ring-opening polymerization of an alkylene oxide (a) in the presence of a salen complex (B), and an acid (C), wherein a molar ratio (C)/(B) of said acid (C) to said salen complex (B) is 0.1 to 200, and the salen complex (B) being represented by the formula (1):
- wherein R1 to R4 each independently represent a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any pair of the R1 to R4 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- R5 to R12 each independently represent a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any adjacent pair of the R5 to R12 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- M represents a metal atom belonging to any one of groups III to XIII;
- L represents a ligand;
- n represents an integer of 1 or 2, and when n is 2, one ligand L of two Ls may be the same as or different from the other,
- or the formula (2):
- wherein R13 to R16 each independently represent, a hydrogen atom, or an aliphatic, alicyclic, aromatic, or aromatic aliphatic hydrocarbon group, or a halogen atom, or any pair of the R13 to R16 may be linked together to form a ring;
- a hydrogen atom or hydrogen atoms bonded to a carbon atom in the hydrocarbon group may be substituted or unsubstituted;
- and R5 to R12, M, L, and n represent the same as defined for the formula (1).
Dependencies are inferred from the claim text.