Compositions comprising at least one heteropolymer and fibers, and methods of using the same

A composition comprising:

• (i) at least one heteropolymer chosen from polyamide polymers of formula (I):
• in which:
• n is an integer which represents the number of amide units such that the number of ester groups present in said at least one polyamide polymer ranges from 10% to 50% of the total number of all ester groups and all amide groups comprised in said at least one polyamide polymer;
• R1, which are identical or different, are each chosen from alkyl groups comprising at least 4 carbon atoms and alkenyl groups comprising at least 4 carbon atoms;
• R2, which are identical or different, are each chosen from C4 to C42 hydrocarbon-based groups with the proviso that at least 50% of all R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which are identical or different, are each chosen from organic groups comprising atoms chosen from carbon atoms, hydrogen atoms, oxygen atoms and nitrogen atoms, with the proviso that R3 at least 2 carbon atoms;
• and
• R4, which are identical or different, are each chosen from hydrogen atoms, C1 to C10 alkyl groups and a direct bond to at least one group chosen from R3 and another R4 such that when said at least one group is chosen from another R4, the nitrogen atom to which both R3 and R4 are bonded forms part of a heterocyclic structure defined in part by R4—N—R3, with the proviso that at least 50% of all R4 are chosen from hydrogen;
• (ii) fibers,
• (iii) at least one polysaccharide resin, and
• (iv) at least one copolymer film former chosen from di-block, tri-block, multi-block, and radial copolymers,
• wherein said at least one heteropolymer is present in an amount effective to disperse said fibers.

A method for dispersing fibers in a cosmetic composition which comprises fibers comprising including in said cosmetic composition at least one heteropolymer chosen from polyamide polymers of formula (I):

• in which:
• n is an integer which represents the number of amide units such that the number of ester groups present in said at least one polyamide polymer ranges from 10% to 50% of the total number of all ester groups and all amide groups comprised in said at least one polyamide polymer;
• R1, which are identical or different, are each chosen from alkyl groups comprising with at least 4 carbon atoms and alkenyl groups comprising at least 4 carbon atoms;
• R2, which are identical or different, are each chosen from C4 to C42 hydrocarbon-based groups with the proviso that at least 50% of all R2 are chosen from C30 to C42 hydrocarbon-based groups;
• R3, which are identical or different, are each chosen from organic groups comprising atoms chosen from carbon atoms, hydrogen atoms, oxygen atoms and nitrogen atoms, with the proviso that R3 comprises at least 2 carbon atoms;
• and
• R4, which are identical or different, are each chosen from hydrogen atoms, and C1 to C10 alkyl groups and a direct bond to at least one group chosen from R3 and another R4 such that when said at least one group is chosen from another R4, the nitrogen atom to which both R3 and R4 are bonded forms part of a heterocyclic structure defined in part by R4—N—R3, with the proviso that at least 50% of all R4 are chosen from hydrogen;
• in an amount effective to disperse said fibers.