Fluid reservoir

Abstract

Fluid reservoirs which are based on polymer substrates and are capable of storing large amounts of fluids. The storage is reliable and the reemergence from the liquid reservoir is readily controllable, for example, via the temperature or via mechanical actions, to achieve retardation of the fluid release. Also, processes for producing such fluid reservoirs and also their use, for example in washing or cleaning compositions.

1 . A process for producing a fluid reservoir comprising a porous, particulate polymer substrate charged with an inclusion mixture, comprising the steps of heating an additive that is highly viscous or solid at ≦25° C. to bring the additive into a liquid state, combining the liquid additive with a fluid to form a flowable mixture, mixing the flowable mixture with a porous polymer substrate, and cooling said mixture of the porous polymer substrate and the flowable mixture. 
     
     
         2 . The process of claim, wherein one or more fluids at temperatures of 20 to 22° C. are mixed with one or more additives having a melting point or flow point of 20° C. to 100° C., heating the mixture less formed to a temperature at or above the flow point or melting point of the additive or additives to form a flowable mixture, optionally adding other solid or liquid additives, mixing the resultant flowable mixture with a porous polymer substrate at a temperature of 25° C. to 150° C., and cooling the resultant mixture of substrate and flowable mixture.