Derivatized polysaccharide polymer

1. A derivatized polysaccharide polymer, comprising a levan polyfructose polymer substrate bearing one or more cationic substituent groups, wherein the levan polyfructose polymer substrate comprises fructosyl units that are linked by β,2-6 linkages and comprises formula (XI):

wherein:

n′ is a number effective to provide a weight average molecular weight of from about 1×10 4 to about 1×10 7 Daltons, as measured by gel permeation chromatography,

each R 7 is independently a cationic moiety

each R 8 is independently CH 2 OH or CH 2 R 7 ,

each R 9 is independently OH or R 7 ,

each R 13 is independently CH 2 OH, CH 2 R 7 , or CH 2 R 14,

each R 14 is independently a fructosyl branch moiety according to structure (XII):

wherein

each R 11 is independently OH or R 7

each R 12 is independently CH 2 OH or CH 2 R 7 , and

each m′ independently 0, 1, 2, or 3, and

provided that at least one R 9 is R 7 , or at least one R 13 is CH 2 R 7 , or at least one R 13 is a fructosyl branch moiety according to formula (XII) and at least one R 11 is R 7 or at least one R 12 is CH 2 R 7 .

2. The polymer of claim 1 , wherein each R 7 is independently selected from an amine salt moieties, quaternary nitrogen salt moieties, and nitrogen oxide moieties.

3. The polymer of claim 1 , wherein R 7 is selected from groups according to formulae (XIII), (XIV), or (XV):

wherein:

each B, B′, and B″ is independently a linking group,

each R 15 , R 16 , and R 17 is independently (C 1 -C 12 )alkyl, and

each X is independently an anion.

4. The polymer of claim 3 , wherein B, B′, and B″ are each independently selected from groups according to formulae (XVI) and (XVII):

wherein each R 18 and R 19 is independently (CH 2 ) p , and p is an integer of from 1 to 10.

5. The polymer of claim 1 , wherein each R 7 is independently a group according to formula (XVIII), (XIX), or (XX):

wherein

each R 15 , R 16 , and R 17 is independently (C 1 -C 12 )alkyl,

each R 18 is independently (CH 2 ) p , and

p is an integer of from 1 to 10.

6. A personal care composition, comprising water and a derivatized polysaccharide polymer, said derivatized polysaccharide polymer comprising a levan polyfructose polymer substrate bearing one or more cationic substituent groups wherein the levan polyfructose polymer substrate comprises fructosyl units that are linked by β,2-6 linkages and comprises formula (XI):

wherein:

n′ is a number effective to provide a weight average molecular weight of from about 1×10 4 to about 1×10 7 Daltons, as measured by gel permeation chromatography

each R 7 is independently a cationic moiety

each R 8 is independently CH 2 OH or CH 2 R 7 ,

each R 9 is independently OH or R 7 ,

each R 13 is independently CH 2 OH, CH 2 R 7 , or CH 2 R 14,

each R 14 is independently a fructosyl branch moiety according to structure (XII):

wherein

each R 11 is independently OH or R 7 ,

each R 12 is independently CH 2 OH or CH 2 R 7 , and

each m′ is independently 0, 1, 2, or 3, and

provided that at least one R 9 is R 7 , or at least one R 13 is CH 2 R 7 , or at least one R 13 is a fructosyl branch moiety according to formula (XII) and at least one R 11 is R 7 or at least one R 12 is CH 2 R 7 .

7. The personal care composition of claim 6 , wherein the personal care composition is selected from cleansing compositions, conditioners, and hair styling products.

8. The personal care composition of claim 6 , wherein the personal care composition is a hair care composition comprising, based on 100 parts by weight of the hair care composition, from about 1×10 −7 parts by weight to about 10 parts by weight of the derivatized polysaccharide polymer.

9. The personal care composition of claim 6 , wherein the personal care composition further comprises one or more surfactant compounds selected from amphoteric surfactants, Zwitterionic surfactants, nonionic surfactants, anionic surfactants, cationic surfactants and mixtures thereof.

10. The personal care composition of claim 6 , further comprising one or more additional ingredients selected from preservatives, thickeners, viscosity modifiers, electrolytes, pH adjusting agents, perfumes, dyes, organosilicon materials, anti-dandruff agents, vitamins, vitamin derivatives, and sequestering agents.

11. A skin care or hair care composition comprising the derivatized polysaccharide polymer of claim 1 , skin care or hair car active ingredient, and water.

12. The composition of claim 11 , further comprising an anionic surfactant.

13. The personal care composition of claim 6 , wherein the composition further comprises an anionic surfactant, and

(a) the composition comprises a discontinuous phase having higher relative amounts of derivatized fructan polymer and anionic surfactant than the overall composition, or

(b) the composition does not comprises such a discontinuous phase, but upon dilution with water, the dilute composition forms such a discontinuous phase.

14. The personal care composition of claim 6 , wherein the composition and the discontinuous phase each further comprise an active ingredient and the discontinuous phase aids in deposition of the active ingredient on the hair or skin.

15. The personal care composition of claim 6 , wherein the active ingredient comprises a fragrance, a conditioning agent, or an anti-dandruff ingredient.

16. The polymer of claim 1 wherein the derivatized polysaccharide polymer is in the form of one or more nanoparticles.

17. The polymer of claim 16 wherein the nanoparticles exhibit, for greater than about 70% by weight of the nanoparticles, a hydrodynamic radius of about 76 nm.

18. The polymer of claim 1 wherein the epoxide is selected from the group consisting of 2,3-epoxypropyltrimethylammonium chloride, 2,3-epoxypropyldimethyl dodecylammoniumchloride, and mixtures thereof.

19. The personal care composition of claim 6 wherein the epoxide is selected from the group consisting of 2,3-epoxypropyltrimethylammonium chloride, 2,3-epoxypropyldimethyl dodecylammoniumchloride, and mixtures thereof.

20. The polymer of claim 1 wherein the polymer, in a 1% aqueous solution, is characterized by a viscosity of between 10 and 5,000 centipoise.