×

Methods for stabilizing ingredients within cosmetics, personal care and household products

  • US 20050244349A1
  • Filed: 04/27/2005
  • Published: 11/03/2005
  • Est. Priority Date: 04/28/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of stabilizing at least one photosensitive poly-unsaturated and/or aromatic compound which is either a color compound, antioxidant, a fragrance compound, a flavor compound or a combination thereof, said method comprising combining at least one compound of formulae ii, ii′

  • and/or i″

    with said at least one photosensitive poly-unsaturated and/or aromatic compound in a ratio within a range of 10;

    1 to 1;

    2 based on total weight percent of the one or more compounds of formulae ii, ii′ and

    /or i″

    to the total weight percent of the one or more photosensitive poly-unsaturated and/or aromatic compounds, embedded imagewherein each Rii is independently linear or branched C1 to C8 alkyl;

    Rii1 is —

    C(O)CH3, —

    CO2Rii3, —

    C(O)NH2, —

    C(O)N(Rii4)2, or —

    CN;

    X is O, NH or N-alkyl;

    Rii2 is linear or branched C1 to C20 alkyl;

    Rii3 is linear or branched C1 to C20 alkyl;

    each Rii4 is independently hydrogen or linear or branched C1 to C8 alkyl;

    Rii′

    1
    is —

    C(O)CH3, —

    CO2Rii′

    3
    , —

    C(O)NH2, —

    C(O)N(Rii′

    4
    )2, or —

    CN;

    Rii′

    2
    is linear or branched C1 to C30 alkyl;

    Rii′

    3
    is linear or branched C1 to C20 alkyl;

    each Rii′

    4
    is independently hydrogen or linear or branched C1 to C8 alkyl;

    Rii′

    5
    is linear or branched C1-C8 alkyl or hydrogen;

    Rii′

    6
    is linear or branched C1-C8 alkyl;

    each Ri″

    is independently linear or branched C1 to C8 alkyl, or linear or branched C1 to C8 alkoxy;

    or one Ri″

    is H and the other Ri″

    is linear or branched C1 to C8 alkyl, or linear or branched C1 to C8 alkoxy, Ri″

    1
    is COCH3, CO2Ri″

    5
    , CONH2, CONH(Ri″

    6
    )2, CN, COX(CH2)n-N—

    (Ri″

    2
    )(Ri″

    4
    )(Ri″

    3
    ), or the quaternized salt form of the formula COX(CH2)n-N—

    (Ri″

    2
    )(Ri″

    4
    )(Ri″

    3
    )+Y

    , n is an integer of 1 to 5, Y

    is an anion, Ri″

    2
    , Ri″

    3
    and Ri″

    4
    are independently linear or branched C1 to C20alkyl; and

    Ri″

    5
    and Ri″

    6
    are independently hydrogen or linear or branched C1-C20 alkyl.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×