PHOSPHOROUS CONTAINING ANTIWEAR ADDITIVES
    25.
    发明申请

    公开(公告)号:US20200239501A1

    公开(公告)日:2020-07-30

    申请号:US16652289

    申请日:2018-10-01

    Abstract: A process is provided for preparing a salt of a hydroxy-substituted di-ester of phosphoric acid, comprising: (a) reacting a phosphating agent with a monohydric alcohol and with a propylene glycol, wherein the mole ratio of monohydric alcohol : propylene glycol is greater than about 4:1 and wherein an excess of the phosphating agent is employed such that the product mixture formed thereby contains phosphorus acid functionality; and (b) reacting the product mixture of step (a) with an amine. The product is useful as an antiwear agent.

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