POLYCARBONATE DIOL, URETHANE RESIN, AND COATING AGENT

    公开(公告)号:EP4417635A1

    公开(公告)日:2024-08-21

    申请号:EP24157246.0

    申请日:2024-02-13

    Inventor: HONDA, Kohei

    CPC classification number: C08G64/305 C08G18/44 C09D175/06 C08G64/0208

    Abstract: A polycarbonate diol having a repeating unit (A) of a carbonate structure, and containing terminal hydroxyl groups, wherein
    90 to 100 mol% of the repeating unit (A) is a repeating unit (B) of a 3-methylpentan-1,5-diyl group-containing carbonate structure and/or a repeating unit (C) of a 1,6-hexanediyl group-containing carbonate structure,
    the polycarbonate diol contains a polycarbonate diol (D) represented by the following formula (D),
    a number average molecular weight calculated from a hydroxyl value of the polycarbonate diol is 300 to 2800 g/mol, and
    in an LC spectrum measured for the polycarbonate diol, when X0 represents the number of repeating units of the polycarbonate diol (D) corresponding to a peak of molecular weight closest to the above number average molecular weight, the number of consecutive peaks at each of which a peak area value ratio to an area value of the peak at which the number of repeating units is X0 is 0.90 to 1.10 is 2 to 7, including the peak at which the number of repeating units is X0,

    wherein R1 represents - (CH2)6- or -CH2CH2CH(CH3)CH2CH2-.

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