Dryer-activated fabric conditioning and antistatic compositions containing biodegradable compounds having unsaturation

A dryer-activated fabric conditioning composition comprising:

• (A) from about 10% to about 95% of biodegradable quaternary ammonium compound selected from the group consisting of the compounds of Formulas I, II, III, IV, and mixtures thereof;
• (B) from about 5% to about 90% of co-softener comprising a carboxylic acid salt of a tertiary amine, tertiary amine ester, or mixtures thereof;
• (C) from 0% to about 50% of nonionic softener;
• wherein the Iodine Value of the total number of fatty acyl groups present in (A), (B), and (C) is from about 8 to about 60;
• wherein Formula I comprises:
• (R).sub.4-m --N.sup.+ --[(CH.sub.2).sub.n --Y--R.sup.2 ].sub.m X.sup.-
• wherein
• each Y is --O--(O)C--, or --C(O)--O--;
• m is 1 to 3;
• n is an integer from 1 to 4;
• each R substituent is a short chain C.sub.1 -C.sub.6 alkyl group, benzyl and mixtures thereof;
• each R.sup.2 is a long chain, saturated or unsaturated C.sub.8 -C.sub.30 hydrocarbyl, or substituted hydrocarbyl substituent and mixtures thereof;
• and
• the counterion, X.sup.-, can be any softener-compatible anion;
• wherein Formula II comprises:
• ##STR11## wherein each Q is --O--(O)C-- or --C(O)--O--;
• each R.sup.1 is C.sub.1 -C.sub.4 alkyl or hydroxy alkyl group;
• each R.sup.2, n, and X.sup.- are as previously defined in Formula I;
• wherein Formula III comprises:
• ##STR12## wherein R.sup.3 is a short chain C.sub.1 -C.sub.4 alcohol;
• R, n, Y, R.sup.2, m, and X.sup.- are as previously defined in Formula I;
• wherein Formula IV comprises:
• (R).sub.4-m --N.sup.+ --[(CH.sub.2).sub.n --Y--R.sup.2 ].sub.m X.sup.-
• wherein
• R, R.sub.2, m, n, and X.sup.- are previously defined in Formula I;
• Y is --O--(O)C--, --C(O)--O--, --NH--C(O)--, --(O)C--NH--, or mixtures thereof;
• wherein at least one Y group is --NH--C(O)--, --(O)C--NH--, or mixtures thereof;
• and wherein a starting amine and a starting carboxylic acid react to form the co-softener.