Deodoriser

Abstract

A device that is adapted to add active to the water of a flushed toilet and fragrance to the air in its vicinity, comprising, in a single unit (a) water-soluble rim block comprising active; (b) fragrance dispenser, and (c) means for holding (a) and (b) in the path of flush water from a toilet bowl rim; characterised in that the fragrance dispenser comprises a container with an opening covered by a membrane having a thickness of from 0.05-1.0 mm and consisting essentially of a homogeneous mixture of 8 to 98 vol. % polyolefin having a molecular weight (weight-average) of at least 300,000, a standard load melt index of less than 0.1 and a reduced viscosity of not less than 4.0, 1 to 92 vol. % filler and 1 to 40 vol. % plasticizer, the fragrance dispenser being orientated such that the fragrance is permanently in contact with the membrane.

1 . A device that is adapted to add active to the water of a flushed toilet and fragrance to the air in its vicinity, comprising, in a single unit
 (a) water-soluble rim block comprising active:   (b) fragrance container, and   (c) means for holding (a) and (b) in the path of flush water from a toilet howl rim: characterised in that the fragrance dispenser comprises a container with an opening covered by a membrane having a thickness of from 0.05-1.0 mm and consisting essentially of a homogeneous mixture of 8 to 98 vol. % polyolefin having a molecular weight (weight-average) of at least 300,000, a standard load melt index of less than 0.1 and a reduced viscosity of not less than 4.0, 1 to 92 vol. % filler and 1 to 40 vol. % plasticizer, the fragrance dispenser being orientated such that the fragrance is permanently in contact with the membrane.   
     
     
         2 . The device according to  claim 1 , in which the average particle size (diameter) of the tiller is the range from 0.01 to about 20 ∥.mu.m∥ μm, the surface area of the filler being in the range from 30 to 950 m 2 /g. 
     
     
         3 . The device according to  claim 1 , in which the filler is finely-divided silica (silicic acid). 
     
     
         4 . The device according to  claim 1 , in which the membrane is from 0.25-0.7 mm thick. 
     
     
         5 . The device according to  claim 1 , in which the fragrance comprises alcohol components. 
     
     
         6 . A method for both deodorising water in a toilet bowl and providing fragrance in the bowl, comprising locating in the path of flush water of a device comprising both a water-soluble rim block and a fragrance dispenser, the fragrance dispenser comprising a membrane having a thickness of from 0.05-1.0 mm and consisting essentially of a homogeneous mixture of 8 to 98 vol. % polyolefin having a molecular weight (weight-average) of at least 300,000, a standard load melt index of less than 0.1 and a reduced viscosity of not less than 4.0, 1 to 92 vol. % filler and 1 to 40 vol. % plasticizer, the fragrance dispenser being orientated such that the fragrance is permanently in contact with the membrane. 
     
     
         7 . The device according to  claim 2 . wherein the surface area of the filler is at least 100 m 2 /g.