Patent ID: 7056878

Claim:
Rinse cycle fabric softener formulations comprising betaine ester derivatives of the following general formula (I): wherein Y according to the formula (II) represents a substituted phosphorus or nitrogen atom or a sulfur atom, R a is an optionally branched, optionally unsaturated radical having 1 to 30 C atoms which optionally contains a hydroxyl group or other heteroatom substituents, X is a radical from the group consisting of —O—C(O)—, —(O)C—O—, —NH—C(O)—, —(O)C—NH, —(CH 3 )N—C(O)—, —(O)C—N(CH 3 )—, —S(O 2 )—O—, —O—S(O 2 )—, —S(O 2 )—NH—, —NH—S(O 2 )—, —S(O 2 )—N(CH 3 )— and —N(CH 3 )—S(O 2 )—, R b , R c are independent of one another and are optionally branched alkyl radicals having 1 to 4 C atoms, where these can optionally contain heteroatom substituents, the radicals R d , R e independently of one another are chosen from hydrogen (H), optionally branched alkyl radicals having 1 to 4 C atoms, optionally substituted aryl or benzyl radicals and CH 2 COOH, CH 2 COOR, CH 2 CH 2 COOH and CH 2 CH 2 COOR, R f is a branched and/or substituted and/or cyclic hydrocarbon radical having 1 to 10 carbon atoms which optionally contains multiple bonds or a styrene radical or is composed exclusively of ethylene, propylene, butylene or styrene radicals or is a block copolymer or randomly composed polymer containing the radicals mentioned, R g is an optionally branched, optionally cyclic hydrocarbon radical having 1 to 30 C atoms which optionally contains double bonds, Z is a radical from the group consisting of a nitrogen atom, an oxygen atom, —O—C(O)—, —NH—C(O)— and —(CH 3 )N—C(O)—, n=1 if Z is not a nitrogen atom and o=1; n=2 if Z is a nitrogen atom and o=1; n=1 if Z is a nitrogen atom and o=2; k and l independently of one another are 1 to 4, m has a value from 0 to 30, and A − is an anion and commercially available liquid esterquat rinse cycle softeners.