Antistatic agent
    91.
    发明授权

    公开(公告)号:US11655370B2

    公开(公告)日:2023-05-23

    申请号:US17790849

    申请日:2022-01-13

    CPC classification number: C08L87/005 C08K5/42 C08L53/00 C08L2201/04

    Abstract: Provided is an antistatic agent (Z) containing:



    a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units; and
    a sulfonate (S),
    the sulfonate (S) being a salt of an alkylbenzenesulfonic acid anion which has a C6-C18 alkyl group,
    the sulfonate (S) including at least two alkylbenzenesulfonates different in the number of carbon atoms of the alkyl group in the anion,
    the sulfonate (S) satisfying the following formula:

    0.40≤W(n)/[W(n−1)+W(n)+W(n+1)]≤0.90

    wherein n is the number of carbon atoms of the alkyl group in the anion of an alkylbenzenesulfonate accounting for the highest proportion by weight in the sulfonate (S); W(n) is a weight of said alkylbenzenesulfonate; and W(n−1) and W(n+1) are respectively a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n−1) carbon atoms and a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n+1) carbon atoms.

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