CEMENT ADDITIVE AND METHOD FOR PRODUCING SAME

    公开(公告)号:US20200283338A1

    公开(公告)日:2020-09-10

    申请号:US16762635

    申请日:2018-02-12

    发明人: Byeong Hak JO

    摘要: The present invention relates to a cement additive and a method for producing same, wherein carcinogens, including heavy metals such as hexavalent chromium and the like, generated from cement are removed while maintaining the strength and characteristic physical properties of cement. Moreover, the cement additive according to the present invention can provide cement that does not become oxidized by heat into hexavalent chromium.

    FLUXANT AGENTS FOR HYDROCARBON BINDERS
    29.
    发明申请

    公开(公告)号:US20190161406A1

    公开(公告)日:2019-05-30

    申请号:US16320720

    申请日:2017-07-26

    IPC分类号: C04B24/04 C04B26/26

    摘要: The invention concerns the use as a fluxant agent of at least one compound with the formula (I) R1—X—R—Y—R2  (I) where: R1 and R2, which can be identical or different, are hydrocarbon chains, linear or branched, at C2-C11; each of —X— and —Y—, which can be identical or different, is an —O—(C═O)— group; —(C═O)—O—; —NR′—(C═O)—, where R′ represents a hydrocarbon atom or an alkyl radical at C1-C4, or —(C═O)—NR′—, where R′ represents a hydrocarbon atom or an alkyl radical at C1-C4, the —R— group is a divalent hydrocarbon chain, at C1-C10, linear or branched, and possibly interrupted by one or more oxygen atom(s) in a composition including a hydrocarbon binder for the preparation of the bituminous product based on solid mineral particles in contact with the said hydrocarbon binder, where the said compound of formula (I) is present in the said composition when the said composition is brought into contact with the said solid mineral particles.