Cosmetic composition comprising a polymer and fibres

A mascara comprising, in a physiologically acceptable medium comprising at least one fatty phase,

• at least one fiber;
• and
• at least one first polymer chosen from polymers of formula (I) below:
• wherein:
• n is a number of amide units such that the number of ester groups represents from 10% to 50% of the total number of the ester groups and of the amide groups in the at least one first polymer;
• R1, which may be identical or different, is chosen from alkyl and alkenyl groups comprising at least 4 carbon atoms;
• R2, which may be identical or different, is chosen from C4 to C42 hydrocarbon-based groups, provided that 50% of the groups R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which may be identical or different, is chosen from organic groups comprising at least 2 carbon atoms, hydrogen atoms, and optionally at least one atom chosen from oxygen and nitrogen atoms;
• and
• R4, which may be identical or different, is chosen from a hydrogen atom, C1 to C10 alkyl groups, a direct bond to R3, and a direct bond to another R4, such that the nitrogen atom to which R3 and R4 are both attached forms part of a heterocyclic structure defined by R4—N—R3, wherein at least 50% of the groups R4 are hydrogen atoms.

A cosmetic process for making up and/or caring for a keratin material of a human being, comprising applying to the keratin material a composition comprising, in a physiologically acceptable medium comprising at least one fatty phase,

• at least one fiber;
• and
• at least one first polymer chosen from polymers of formula (I) below:
• wherein:
• n is a number of amide units such that the number of ester groups represents from 10% to 50% of the total number of the ester groups and of the amide groups in the at least one first polymer;
• R1, which may be identical or different, is chosen from alkyl and alkenyl groups comprising at least 4 carbon atoms;
• R2, which may be identical or different, is chosen from C4 to C42 hydrocarbon-based groups, provided that 50% of the groups R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which may be identical or different, is chosen from organic groups comprising at least 2 carbon atoms, hydrogen atoms, and optionally at least one atom chosen from oxygen and nitrogen atoms;
• and
• R4, which may be identical or different, is chosen from a hydrogen atom, C1 to C10 alkyl groups, a direct bond to R3, and a direct bond to another R4, such that the nitrogen atom to which R3 and R4 are both attached forms part of a heterocyclic structure defined by R4—N—R3, wherein at least 50% of the groups R4 are hydrogen atoms.

A method for obtaining a deposit which adheres to a keratin material comprising applying to the keratin material a composition comprising, in a physiologically acceptable medium comprising at least one fatty phase,

• at least one fiber;
• and
• at least one first polymer chosen from polymers of formula (I) below:
• wherein:
• n is a number of amide units such that the number of ester groups represents from 10% to 50% of the total number of the ester groups and of the amide groups in the at least one first polymer;
• R1, which may be identical or different, is chosen from alkyl and alkenyl groups comprising at least 4 carbon atoms;
• R2, which may be identical or different, is chosen from C4 to C42 hydrocarbon-based groups, provided that 50% of the groups R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which may be identical or different, is chosen from organic groups comprising at least 2 carbon atoms, hydrogen atoms, and optionally at least one atom chosen from oxygen and nitrogen atoms;
• and
• R4, which may be identical or different, is chosen from a hydrogen atom, C1 to C10 alkyl groups, a direct bond to R3, and a direct bond to another R4, such that the nitrogen atom to which R3 and R4 are both attached forms part of a heterocyclic structure defined by R4—N—R3, wherein at least 50% of the groups R4 are hydrogen atoms,
• wherein said composition is applied in an amount effective for obtaining a deposit which adheres to the keratin material.

A method for thickening and/or lengthening eyelashes comprising applying to the eyelashes a mascara comprising, in a physiologically acceptable medium comprising at least one fatty phase,

• at least one fiber;
• and
• at least one first polymer chosen from polymers of formula (I) below:
• wherein:
• n is a number of amide units such that the number of ester groups represents from 10% to 50% of the total number of the ester groups and of the amide groups in the at least one first polymer;
• R1, which may be identical or different, is chosen from alkyl and alkenyl groups comprising at least 4 carbon atoms;
• R2, which may be identical or different, is chosen from C4 to C42 hydrocarbon-based groups, provided that 50% of the groups R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which may be identical or different, is chosen from organic groups comprising at least 2 carbon atoms, hydrogen atoms, and optionally at least one atom chosen from oxygen and nitrogen atoms;
• and
• R4, which may be identical or different, is chosen from a hydrogen atom, C1 to C10 alkyl groups, a direct bond to R3, and a direct bond to another R4, such that the nitrogen atom to which R3 and R4 are both attached forms part of a heterocyclic structure defined by R4—N—R3, wherein at least 50% of the groups R4 are hydrogen atoms.