Cosmetic method for controlling odors

A polymer of formula (II):

• wherein R′1 independently represents H or an acetyl group or a group —CO-L-X of formula (c) below:
• wherein:
• L being a linear, branched or cyclic, saturated or unsaturated divalent hydrocarbon-based group comprising from 1 to 20 carbon atoms which may be interrupted with one or more non-adjacent heteroatoms chosen from sulfur, oxygen, or —NH—, —CO—, —CONH—, —COO—, —O—CO—N(Ra)-, said divalent group optionally being substituted with one or more groups chosen from hydroxyl, amine, carboxylic acid, amide, cyano and (C1-C4)acylamino groups,
• with Ra, Rb and Rc independently denoting a hydrogen atom or a linear or branched C1-C6 alkyl radical;
• R′d denotes H or a linear or branched C1-C4 alkyl radical, or a CF3 radical;
• the polymer containing at least one group —CO-L-X of formula (c),
• n ranges from 5 to 1700.

A process for deodorizing the feet and/or the shoes, comprising placing in a shoe a sole of which the surface has been treated by applying to said surface a composition comprising a grafted chitosan in which the amino groups are grafted with photoactive groups of azide or diazirine type of formula (I):

• wherein R′ independently represents H or an acetyl group or a group —CO-L-X, the polymer containing at least one group R′ ═—CO-L-X,
• L being a linear, branched or cyclic, saturated or unsaturated divalent hydrocarbon-based group comprising from 1 to 20 carbon atoms which may be interrupted with one or more non-adjacent heteroatoms chosen from sulfur, oxygen, or —NH—, —CO—, —CONH—, —COO—, —O—CO—N(Ra)- groups, said divalent group possibly being substituted with one or more groups chosen from hydroxyl, amine, carboxylic acid, amide, cyano and (C1-C4)acylamino groups,
• with Ra, Rb and Rc independently denoting a hydrogen atom or a linear or branched, preferably linear, C1-C6 alkyl radical;
• X denotes a photoactive group of azide or diazirine type;
• n ranges from 5 to 2000;
• then exposing the treated surface to light radiation.

A process for deodorizing the body (or part of the body), comprising clothing the body (or part of the body) with clothing made of textile fabric of which the surface has been treated by applying to the surface of the textile a composition comprising a grafted chitosan in which the amino groups are grafted with photoactive groups of azide or diazirine type of formula (I):

• wherein R′ independently represents H or an acetyl group or a group —CO-L-X, the polymer containing at least one group R′ ═—CO-L-X,
• L being a linear, branched or cyclic, saturated or unsaturated divalent hydrocarbon-based group comprising from 1 to 20 carbon atoms which may be interrupted with one or more non-adjacent heteroatoms chosen from sulfur, oxygen, or —NH—, —CO—, —CONH—, —COO—, —O—CO—N(Ra)- groups, said divalent group possibly being substituted with one or more groups chosen from hydroxyl, amine, carboxylic acid, amide, cyano and (C1-C4)acylamino groups,
• with Ra, Rb and Rc independently denoting a hydrogen atom or a linear or branched, preferably linear, C1-C6 alkyl radical:
• X denotes a photoactive group of azide or diazirine type;
• n ranges from 5 to 2000;
• and then exposing the treated surface to light radiation.

A process for deodorizing the feet, comprising clothing the feet with an item of clothing for the feet made of textile fabric treated by applying to said textile fabric a composition comprising a grafted chitosan in which the amino groups are grafted with photoactive groups of azide or diazirine type of formula (I):

• wherein R′ independently represents H or an acetyl group or a group —CO-L-X, the polymer containing at least one group R′ ═—CO-L-X,
• L being a linear, branched or cyclic, saturated or unsaturated divalent hydrocarbon-based group comprising from 1 to 20 carbon atoms which may be interrupted with one or more non-adjacent heteroatoms chosen from sulfur, oxygen, or —NH—, —CO—, —CONH—, —COO—, —O—CO—N(Ra)- groups, said divalent group possibly being substituted with one or more groups chosen from hydroxyl, amine, carboxylic acid, amide, cyano and (C1-C4)acylamino groups,
• with Ra, Rb and Rc independently denoting a hydrogen atom or a linear or branched, preferably linear, C1-C6 alkyl radical;
• X denotes a photoactive group of azide or diazirine type;
• n ranges from 5 to 2000;
• and then exposing the treated textile fabric to light radiation.