Patent ID: 11969493
Assignee: EVONIK OPERATIONS GMBH
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A process for preparing an opaque composition, comprising the steps of:
a) providing a starting composition comprising
A) from 1.0% by weight to 25.0% by weight of at least one surfactant,
B) from 5.0% by weight to 30.0% by weight ethylene glycol distearate,
C) from 20.0% by weight to 89.0% by weight water,
wherein the percentages by weight refer to the total starting composition,

b) stirring the starting composition at a temperature in a range from 60° C. to 100° C.,
c) cooling to a temperature in a range from 5° C. to 55° C. to obtain the opaque composition wherein the cooling is carried out by adding water to the starting composition, obtaining an opaque composition having a water content of from 50% by weight to 85% by weight water, where the percentages by weight refer to the total composition,
wherein the total surfactant amount accounts for at least 90% by weight based on the amount of all surface-active substances present in the starting composition,
wherein at least two surfactants are present in component A), and
said at least one surfactant is an organic substance with interface-active properties which have the ability to reduce the surface tension of water at 20° C. and at a concentration of 0.5% by weight, based on the total composition, to below 45 mN/m and
considered in a pH range of 2 to 12 and at a temperature of 20° C., said at least one surfactant has positively and/or negatively charged functional groups in its chemical structural formula, and
wherein said opaque composition has a turbidity of at least 600 nephelometric units.