Toilet bowl cleaner and stain-inhibiting composition
US4861511A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Jun 26, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0056
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition suitable for cleaning and preventing the staining of toilet bowls is provided herein. This composition is made of low molecular weight water-soluble polyacrylate, a low molecular weight copolymer preferably a copolymer of an acrylamide and acrylic acid, and a binder. The composition may also optionally contain an inorganic salt, a surfactant, a dye and perfume. The composition is preferably in the form of a cake or pellet and added to the tank of a toilet so that the cleaning and stain-inhibiting ingredients are released into the toilet bowl upon each flush of the toilet. The invention also includes a method of cleaning and preventing the staining of a toilet bowl by the use of such composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.