FORM - 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See Section 10 and Rule 13)
COMPOSITON
HINDUSTAN UNILEVER LIMITED, a company incorporated under
the Indian Companies Act, 1913 and having its registered office
at 165/166, Backbay Reclamation, Mumbai -400 020, Maharashtra, India
The following specification particularly describes the invention and the manner in which it is to be performed

COMPOSITION
The present invention relates to a hair treatment composition comprising anti-dandruff agents and a cationic deposition polymer.
DE 101 11 288 (Wella) discloses a composition comprising climbazole, zinc pyrithione and Polyquatemium-10.
Despite the prior art there remains the need for improved anti-dandruff compositions.
Accordingly, the present invention provides a hair treatment composition comprising a zinc-based antidandruff agent, a conazole fungicide and a cationic modified guar deposition polymer,
Preferably, the zinc-based antidandruff agent is zinc pyrithione.
Preferably, the zinc-based antidandruff agent is present at from 0.01 to 2% wt. of the composition. More preferably it is present at from 0.5 to 1.5 and most preferably from 0.75 to 1.25% wt. of the composition.
Preferably, the conazole fungicide is selected from ketoconazole and climbazole.
Preferably, the conazole fungicide is present at from 0.01 to 2% wt. of the composition. More preferably it is present at from 0.025 to 0.75% wt. of the composition.
Such cationic deposition polymers may be a homopolymer or be formed from two or more types of monomers. The molecular weight of the polymer will generally be between 5 000 and 10 000 000 unified atomic mass units, typically at least 10 000

and preferably from 100 000 to 2 000 000. The polymers will have cationic nitrogen containing groups such as quaternary ammonium or protonated amino groups, or a mixture thereof. A suitable cationic deposition polymer is AQU D4051 a cationically-modified guar commercially available from Aqualon.
Preferably, the cationic deposition polymer is guar hydroxypropyl trimonium chloride.
It is highly preferred that compositions according to the invention should contain from 0.04% to 2% wt. of the composition cationic deposition polymer, more preferably from 0.05 to 0.5% wt. and most preferably from 0.08 to 0.25% by weight of the composition.
The composition according to the invention may be in any common product form used to treat hair. However, preferably, it is shampoo composition.
The composition according to the invention may comprise any of the ingredients commonly found in hair treatment compositions depending on the product Form.
For example, where the composition is a shampoo it will comprise at least one cleansing surfactant such as is commonly employed in shampoos. Where it is a composition which aims to provide conditioning benefit, whether as part of a shampoo composition or a dedicated conditioning composition it will comprise a conditioning active. Suitable conditioning actives include fatty alcohols, silicones and cationic surfactants.
EXAMPLE 1
The following formulation is an embodiment of the invention and is made by standard processes.

Ingredient
%wt.
Sodium Laureth Sulphate 14
Cocoamidopropyl betaine 1.6
Guar hydroxypropyl trimonium chloride* 0.2
Zinc Pyrithione 1.0
Climbazole 0.5
Zinc sulphate 0.1
Dimethicone 2.0
Perfume 0.7
Sodium chloride 0.5
Propylene G)ocol 1.0
Acrylic Acid polymer (Carbomer) 0.6
Polypropylene Glycol 0.1
Preservative 0.22
Preservative 0.09
Water To 100
* Jaguar C17

EXAMPLE 2
The following demonstrates the efficacy of climbazole in the presence of cationic guar and polyquaternium-10.

Test sample Cone. ZPTO ug/cm3 after one rinse (two rinses) S.D.
1 % ZPTO, 0.5% 15.51 (12.199) 1.35(1.456)
climbazole, 0.2% Jaguar
C17
1 % ZPTO, 0.5% 12.39(7.49) 1.11 (0.57)
climbazole, 0.2% PQ-10

CLAIMS
1. Hair treatment composition comprising a zinc-based antidandruff agent, a conazole fungicide and a cationic modified guar deposition polymer.
2. Composition according to claim 1 wherein the zinc-based antidandruff agent is zinc pyrithione.
3. Composition according to claim 1 or 2 wherein the conazole fungicide is selected from ketoconazole and climbazole.
4. Composition according to any preceding claim wherein the polymer is guar hydroxypropyl trimonium chloride.