Hand dishwashing compositions comprising polymeric suds volume and suds duration enhancers and methods for washing with same

1. A hand dishwashing composition comprising:

(a) a polymeric suds stabilizer selected from the group consisting of:

(i) a polymer comprising at least one monomeric unit having the formula:

wherein

each of R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, C 1 to C 6 alkyl, and mixtures thereof;

L is O; Z is CH 2 ;

z is an integer selected from about 2 to about 12;

A is NR 4 R 5 , wherein each of R 4 and R 5 are independently selected from the group consisting of hydrogen, C 1 to C 8 alkyl, and mixtures thereof, or NR 4 R 5 form an heterocyclic ring containing from 4 to 7 carbon atoms, optionally containing additional hetero atoms, optionally fused to a benzene ring, and optionally substituted by C 1 to C 8 hydrocarbyl;

(ii) a proteinaceous suds stabilizer having an isoelectric point form about 7 to about 11.5;

(iii) a zwitterionic polymeric suds stabilizer; and

(iv) mixtures thereof;

and wherein said polymeric suds stabilizer has a molecular weight of from about 1,000 to about 2,000,000 daltons;

(b) a detersive surfactant;

(c) an amine oxide; and

(d) carriers and optionally, other adjunct ingredients, with the proviso that the hand dishwashing composition does not contain builders.

2. A hand dishwashing composition according to claim 1 , wherein said polymeric suds stabilizer comprises a molecular weight of from about 5,000 to about 1,000,000.

3. A hand dishwashing composition according to claim 1 , wherein said polymeric suds stabilizer is a copolymer of:

wherein R 1 , R 4 , R 5 and z are as hereinbefore defined; and

wherein R 1 and L are as hereinbefore defined, and B is selected from the group consisting of hydrogen, C 1 to C 8 hydrocarbyl, NR 4 R 5 , and mixtures thereof;

wherein each of R 4 and R 5 are independently selected from the group consisting of hydrogen, C 1 –C 8 linear or branched alkyl, alkyleneoxy having the formula:

—(R 10 O) y R 11

wherein R 10 is C 2 –C 4 linear or branched alkylene, and mixtures thereof; R 11 is hydrogen, C 1 –C 4 alkyl, and mixtures thereof; y is from 1 to about 10;, or NR 4 R 5 form a heterocyclic ring containing from 4 to 7 carbon atoms, optionally containing additional hetero atoms, optionally fused to a benzene ring, and optionally substituted by C 1 to C 8 hydrocarbyl;

wherein ratio of (i) to (ii) is from about 99:1 to about 10:1.

4. A hand dishwashing composition according to claim 1 , wherein said polymeric suds stabilizer is a homopolymer of:

5. A hand dishwashing composition according to claim 1 , wherein said polymeric suds stabilizer is a copolymer of:

6. A hand dishwashing composition according to claim 1 , wherein said zwitterionic polymeric suds stabilizer has the formula:

wherein R is C 1 –C 12 linear alkylene, C 1 –C 12 branched alkylene, and mixtures thereof; R 1 is a unit capable of having a negative charge at a pH of from about 4 to about 12; R 2 is a unit capable of having a positive charge at a pH of from about 4 to about 12; n has a value such that said zwitterionic polymers suds stabilizer has an average molecular weight of from about 1,000 to about 2,000,000 daltons; x is from 0 to 6; y is 0 or 1; and z is 0 or 1.

7. A hand dishwashing composition according to claim 6 , wherein said zwitterionic polymeric suds stabilizer has an average molecular weight of from about 5,000 to about 1,000,000 daltons.

8. A hand dishwashing composition according to claim 1 wherein said polymeric suds stabilizer is selected from the group consisting of a homopolymer, a copolymer, a terpolymer and mixtures thereof.

9. A hand dishwashing composition according to claim 1 wherein said detersive surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants, zwitterinoic surfactants, cationic surfactants, and mixtures thereof.

10. A hand dishwashing composition according to claim 1 wherein said composition is in the form selected from the group consisting of liquids, liquid-gels, gels, microemulsions, thixotropic liquids, pastes and mixtures thereof.