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    Method for making a di(aminoaryl)fluorene compound
    1.
    发明授权
    Method for making a di(aminoaryl)fluorene compound 有权

    公开(公告)号：US11685707B2

    公开(公告)日：2023-06-27

    申请号：US17415378

    申请日：2019-12-20

    Applicant: Cytec Industries Inc.

    Inventor： Jonathan E. Meegan ,  Victor Maruani ,  Vincent Schanen ,  Paul Cross

    IPC: C07C209/84

    CPC classification number: C07C209/84

    Abstract: The present invention is directed to a method for making a di(aminoaryl)fluorene compound that includes the steps of: (a) reacting a fluorenone compound according structure (I) with excess aminobenzene according to structure (II) wherein: each R1, R2, R3, R4, R12, and R13 is independently a group that is inert in the polymerization of epoxy compounds, and R11 is H or (C1-C6)alkyl, in the presence of an acid catalyst, in a liquid medium comprising an aromatic or substituted aromatic solvent having a boiling point of greater than or equal to 150° C. and in the presence of an acid catalyst, in a liquid medium comprising an aromatic or substituted aromatic solvent having a boiling point of greater than or equal to 150° C. and from which the di(aminoaryl)fluorene compound is crystallizable, to form a crude product mixture comprising the di(aminoaryl)fluorene compound, (b) crystallizing di(aminoaryl)fluorene compound in the product mixture, and (c) separating the product mixture into crystallized di(aminoaryl)fluorene compound and a filtrate.

    Modified amine curing agents, their preparation and use in curable compositions
    2.
    发明授权
    Modified amine curing agents, their preparation and use in curable compositions 有权

    公开(公告)号：US10196479B2

    公开(公告)日：2019-02-05

    申请号：US15990058

    申请日：2018-05-25

    Applicant: CYTEC INDUSTRIES INC.

    Inventor： Jonathan E. Meegan

    IPC: C07C211/50 ,  C08G59/50 ,  C08J5/24 ,  C08J5/04 ,  C08K5/18 ,  C08L63/00

    Abstract: A method for producing a modified form of an aromatic amine compound represented by the following structure I: where A is an amine group —NHR, R is independently selected from hydrogen, linear and branched alkyl groups having 1 to 6 carbon atoms, preferably A is NH2; X is a halogen selected from Cl, Br, F, I, and At, or hydrogen (H). The method includes heating the aromatic amine compound, in its initial crystalline form, to a temperature above its melting point in order to obtain a molten material, then cooling the molten material to a temperature below the melting point of the crystalline compound so as to produce an amorphous, glassy form of the aromatic amine compound. The modified aromatic amine compound is suitable as a curing agent in resin compositions that are used for fabricating fiber-reinforced composites.

    MODIFIED AMINE CURING AGENTS, THEIR PREPARATION AND USE IN CURABLE COMPOSITIONS
    5.
    发明申请
    MODIFIED AMINE CURING AGENTS, THEIR PREPARATION AND USE IN CURABLE COMPOSITIONS 审中-公开

    公开(公告)号：US20180273677A1

    公开(公告)日：2018-09-27

    申请号：US15990058

    申请日：2018-05-25

    Applicant: CYTEC INDUSTRIES INC.

    Inventor： Jonathan E. Meegan

    IPC: C08G59/50 ,  C08K5/18 ,  C07C211/50 ,  C08J5/24

    CPC classification number: C08G59/5033 ,  C07C211/50 ,  C08J5/24 ,  C08J2363/00 ,  C08K5/18

    Abstract: A method for producing a modified form of an aromatic amine compound represented by the following structure I: where A is an amine group —NHR, R is independently selected from hydrogen, linear and branched alkyl groups having 1 to 6 carbon atoms, preferably A is NH2; X is a halogen selected from Cl, Br, F, I, and At, or hydrogen (H). The method includes heating the aromatic amine compound, in its initial crystalline form, to a temperature above its melting point in order to obtain a molten material, then cooling the molten material to a temperature below the melting point of the crystalline compound so as to produce an amorphous, glassy form of the aromatic amine compound. The modified aromatic amine compound is suitable as a curing agent in resin compositions that are used for fabricating fiber-reinforced composites.

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