Patent ID: 11944697
Assignee: HENKEL AG & CO. KGAA
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 17:
18. A process for the preparation of a hair treatment composition in the form of a two-phase system having two separate, optically detectable continuous phases with a common horizontal phase boundary, comprising the following process steps:
a) Providing a water phase (Ia) comprising water and optionally other components and heating the water phase to a temperature of from about 70 to about 95° C.,
b) Providing an oil phase (Ib) comprising at least one oil and at least one emulsifier, wherein the oil phase (Ib) comprises a silicone in a proportion by weight of at least about 50% of the total weight of the oil phase (Ib), and adding the oil phase to the heated water phase from step a),
c) Homogenizing the mixture from step b),
d) Cooling the emulsion resulting from step c) and optionally adding further active ingredients,
e) Filling the emulsion resulting from step d) into transparent containers, whereby in the resting state after from about 10 to about 90 minutes a separation into a water phase (IIa) and an emulsion phase (IIb) occurs.