Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
1999-06-04
2001-07-03
Einsmann, Margaret (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S379000, C510S382000, C510S445000, C510S447000, C510S448000, C510S192000, C252S187100
Reexamination Certificate
active
06255268
ABSTRACT:
SUMMARY OF THE INVENTION
The present invention ret to a shaped fragrant bleaching block and methods for making and employing the block. In general, a fragrant bleaching block is made and employed by admixing an organoleptic effective amount of a fragrant agent with a bleaching agent and the other ingredients of the final desired composition and compression-molding, melt-casting, or extruding the composition to form a block.
The shaped fragrant bleaching block comprises:
(a) a bleaching agent having a reduction potential from about −0.7 v to about +0.4 v compared to an Ag/AgCl electrode; and
(b) an organoleptic effective amount of a fragrant agent which (i) is stable to the bleaching agent, (ii) does not decompose the bleaching agent, and (iii) is not substantially hygroscopic.
In a preferred embodiment, the present invention relates to a method of making shaped fragrance bleaching blocks and, in particular, urinal blocks. The shaped fragrance bleaching blocks may be produced, for example, by (a) admixing the bleaching agent and fragrant agent and the other desired components and placing the mixture into a mold of a predetermined size and shape; (b) compressing the mold for a period of time and at a pressure sufficient to produce a solid fragranced bleaching block; and (c) recovering the solid shaped fragranced bleaching block from the mold. Another example of a method for producing the shaped fragranced bleaching blocks of this invention comprises (a) admixing the aforasaid composition and extruding a melt or partial melt of the mixture into a mold of the predetermined size and shape; (b) cooling the mold to solidify the shaped fragranced bleaching block; and (c) recovering the solid shaped fragranced bleaching block from the mold. To achieve a melt or partial melt in accordance with the present invention, the composition mixture is heated for a time sufficient to melt or partially melt the quantity of composition mixture placed in the oil bath.
Methods for cleaning, reducing or retarding bacterial, fungal and algal growth, and controlling biofilm are also provided by this invention. According to the method of this invention, a shaped fragranced bleaching block of this invention is placed in a toilet fixture for a time sufficient to reduce or retard the growth of bacteria, fungus or algae in the toilet fixture. In a preferred embodiment, the growth of bacteria, fungus and algae in a toilet bowl or urinal is reduced or retarded by placing a urinal block in a toilet fixture. The block may be placed in the tank or under the rim of the fixture. As used herein, a toilet fixture includes, for example, toilets and urinals.
REFERENCES:
patent: 4396522 (1983-08-01), Callicott et al.
patent: 4459710 (1984-07-01), Keyes et al.
patent: 4579677 (1986-04-01), Hooper et al.
patent: 4663068 (1987-05-01), Hagemann et al.
patent: 4713079 (1987-12-01), Chun et al.
patent: 5256328 (1993-10-01), Cavanagh et al.
patent: 5336427 (1994-08-01), Bunczk et al.
patent: 5565576 (1996-10-01), Hall et al.
patent: 5759974 (1998-06-01), Menke et al.
patent: 5958853 (1999-09-01), Watanabe
patent: 5972864 (1999-10-01), Counts
patent: 6124251 (2000-09-01), Rader et al.
patent: 0 206 725 (1986-12-01), None
patent: 0 503 751 A1 (1992-09-01), None
patent: 0 750 035 A2 (1996-12-01), None
patent: WO 92/19712 (1992-11-01), None
patent: WO 94/26863 (1994-11-01), None
patent: WO 97/00935 (1997-01-01), None
patent: WO 98/06804 (1997-08-01), None
Darby & Darby
Einsmann Margaret
Lonza Inc.
Webb Gregory E.
LandOfFree
Bleaching and cleaning compositions containing fragrances does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bleaching and cleaning compositions containing fragrances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bleaching and cleaning compositions containing fragrances will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2517325