Manufacture of absorbent paper with low charge density imidazolinium containing debonder compositions

A debonder composition comprising a nonionic surfactant in admixture with an ion paired surfactant mixture, said ion paired surfactant mixture including a zwitterionic imidazolinium surfactant and a cationic surfactant selected from cationic imidazolinium surfactants and quaternary ammonium surfactants, said zwitterionic imidazolinium surfactant having the structural formula I:

• wherein:
• R5 is a straight or branched hydrocarbon spacer moiety having from 2-18 carbon atoms wherein said R5 may be unsubstituted or optionally substituted with one or more groups which can be the same or different and are independently selected from the group consisting of halogen, cyano, alkyl, cycloalkyl, —OH, O(C1-C6)alkyl, —C(═O)(C1-C6)alkyl, —CO2H, —C(═O)O(C1-C6)alkyl, N[(C1-C6)alkyl]2, and —NH[(C1-C6)alkyl] and/or may have interposed within said hydrocarbon spacer moiety one or more groups which may be the same or different and are independently selected from the group consisting of —NH—C(O)—, —C(O)—NH—, —O—, —SO2— and —C(═O)—;
• R6 is a straight or branched saturated or unsaturated hydrocarbon moiety having from 3 to 30 carbon atoms wherein said R6:
• (i) may be unsubstituted or optionally substituted with one or more groups which can be the same or different and are independently selected from the group consisting of halogen, cyano, alkyl, cycloalkyl, —OH, O(C1-C6)alkyl, —CO2H, —C(═O)(C1-C6)alkyl, —C(═O)O(C1-C6)alkyl, —N[(C1-C6)alkyl]2, —NH—C(O)(C1-C6)alkyl, —C(O)NH2, —C(O)—NH(C1-C6)alkyl, and —NH(C1-C6)alkyl, and/or
• (ii) may have interposed within said hydrocarbon moiety one or more groups which may be the same or different and are independently selected from the group consisting of —NH—C(O)—, —C(O)—NH—, —O—, —SO2— and —C(═O)—;
• R7 is a straight or branched saturated or unsaturated hydrocarbon moiety having from 3 to 30 carbon atoms wherein said R7:
• (i) may be unsubstituted or optionally substituted with one or more groups which can be the same or different and are independently selected from the group consisting of halogen, cyano, alkyl, cycloalkyl, —OH, O(C1-C6)alkyl, —CO2H, —C(═O)(C1-C6)alkyl, —C(═O)O(C1-C6)alkyl, —N[(C1-C6)alkyl]2, —NH—C(O)(C1-C6)alkyl, —C(O)NH2, —C(O)—NH(C1-C6)alkyl, and —NH(C1-C6)alkyl, and/or
• (ii) may have interposed within said hydrocarbon moiety one or more groups which may be the same or different and are independently selected from the group consisting of —NH—C(O)—, —C(O)—NH—, —O—, —SO2— and —C(═O)—;
• wherein at least one of R6 or R7 has from 8 to 30 carbon atoms;
• X is selected from the group consisting of SO3, CO2, PO3 and HPO2;
• and
• p is 1 or 2,
• wherein the cationic imidazolinium surfactant has the structural formula:
• wherein:
• R9 is H, methyl, ethyl, or propyl;
• R10 is an alkylalkenyl moiety having from 11 to 21 carbon atoms;
• R11 is an ethylene or propylene bridging group;
• R12 is an amidoalkenylalkyl moiety having from 12 to 22 carbon atoms;
• p is 1 or 2;
• and
• X is selected from halides, sulfates, carboxylates and phosphates,
• Wherein the quaternary ammonium surfactant is selected from the group consisting of:
• a dialkyldimethylammonium compound of the formula:
• and
• a bis-dialkylamidoammonium compound of the formula:
• wherein each R may be the same or different and each R indicates a hydrocarbon chain, saturated or unsaturated, having a chain length of from about twelve to about twenty-two carbon atoms;
• and wherein said compounds are supplied to the surfactant mixture with a suitable anion;
• and
• wherein the debonder composition exhibits a charge density of less than 0.3 meq/g.