Polycarbonate diol composition
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsEriko HOSHINO, Yasufumi KAWAI
Life of this patent
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Abstract
A polycarbonate diol composition comprising a repeating structural unit represented by the following general formula (I), further comprising at least one repeating structural unit selected from the group consisting of repeating structural units represented by the following general formulas (II) to (IV), and satisfying specific conditions.
Claims20
A polycarbonate diol composition comprising a repeating structural unit represented by the following general formula (I), further comprising at least one repeating structural unit selected from the group consisting of a repeating structural unit represented by the following general formula (II), a repeating structural unit represented by the following general formula (III), and a repeating structural unit represented by the following general formula (IV), and satisfying the following expression (Expression 1):
- R11—O—CO—O (I)
- wherein R11 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 15 or less carbon atoms, the hydrocarbon group optionally having a hetero atom, and R11 when present in plural are the same as or different from each other,
- wherein R21 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R21 when present in plural are the same as or different from each other;
- and n21 is any integer,
- R31—O—CO (III)
- wherein R31 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R31 when present in plural are the same as or different from each other,
- CO—R41—CO—O—R42—O (IV)
- wherein R41 and R42 are each independently a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R41 and R42 when present in plural are the same as or different from each other,
- xy≥3.7×α(α=22.4×Mn−0.41) (Expression 1)
- wherein x is a proportion of the content (% by mass) of the repeating structural unit represented by the general formula (I) based on the total mass (% by mass) of the repeating structural units represented by the general formulas (I) to (IV), y is an amount of the polycarbonate diol composition titrated (mL) in a cloud point titration method, and Mn is a number-average molecular weight of the polycarbonate diol composition.
A polycarbonate diol composition comprising a repeating structural unit represented by the following general formula (I) and further comprising at least one repeating structural unit selected from the group consisting of a repeating structural unit represented by the following general formula (II), a repeating structural unit represented by the following general formula (III), and a repeating structural unit represented by the following general formula (IV), wherein based on the total mass of the repeating structural units represented by the general formulas (I) to (IV), a content of the repeating structural unit represented by the general formula (I) is 40% by mass or more, and an amount titrated in a cloud point titration method is 4.0 mL or more and 9.5 mL or less:
- R11—O—CO—O (I)
- wherein R11 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 15 or less carbon atoms, the hydrocarbon group optionally having a hetero atom, and R11 when present in plural are the same as or different from each other,
- wherein R21 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R21 when present in plural are the same as or different from each other;
- and n21 is any integer,
- R31—O—CO (III)
- wherein R31 is a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R31 when present in plural are the same as or different from each other,
- CO—R41—CO—O—R42—O (IV)
- wherein R41 and R42 are each independently a divalent linear, branched or cyclic aliphatic, or aromatic hydrocarbon group having 2 or more and 20 or less carbon atoms, and R41 and R42 when present in plural are the same as or different from each other.
Dependencies are inferred from the claim text.