Aqueous fabric softener formulations comprising copolymers of cationic acrylates and N-alkyl acrylamides

A fabric softener composition comprising

• A) 0.5 to 50 wt-%, based on the total weight of the composition, of cationic quaternary ammonium salts;
• tertiary fatty amines having at least one C8-C30alkyl chains, carboxylic acids having 8 to 30 carbons atoms and one carboxylic group per molecule;
• esters of polyhydric alcohols;
• fatty alcohols;
• ethoxylated fatty alcohols;
• alkyphenols;
• ethoxylated alkyphenols;
• ethoxylated fatty amines;
• ethoxylated monoglycerides;
• ethoxylated diglycerides;
• mineral oils and/or polyols;
• B) 0.005 to 15 wt-%, based on the total weight of the composition, of the cationic polymer formed from
• a) a blend of a cationic monomer of formula (I)
• wherein
• R1 is hydrogen or methyl,
• R2 is hydrogen or C1-C4alkyl,
• R3 is C1-C4alkylene,
• R4, R5 and R6 are independently from each other hydrogen or C1-C4alkyl,
• X is —O— or —NH— and
• Y is Cl;
• Br;
• I;
• hydrogen sulphate or methosulfate;
• and a non-ionic monomer of formula (II)
• wherein
• R7 is hydrogen or methyl,
• R8 is hydrogen or C1-C4alkyl, and
• R9 and R10 are independently from each other C1-C4alkyl;
• b) at least one cross-linking agent in an amount of more than 500 ppm by the weight of component a) and
• c) at least one chain transfer agent;
• C) 0 to 20 wt-%, based on the total weight of the composition, of customary additives;
• and
• D) water to 100%.