Back to results
US 4,051,056 AGranted
Abrasive scouring compositions
AssigneeThe Procter & Gamble Company
InventorWilliam Law Hartman
Life of this patent
Estimating the term…
Abstract
Abrasive, hard surface cleanser compositions containing a surfactant, a particular type of expanded perlite material and a filler material which can be inorganic salt, water or mixtures thereof. Such compositions, whether liquid or granular, provide excellent stain and soil removal from hard surfaces but leave very little or no residual abrasive grit after being rinsed from such surfaces.
Claims8
A liquid, abrasive, hard surface cleansing composition which leaves little or no abrasive residue on hard surfaces after use, said composition consisting essentially of:
- a. from about 0.1% to 7% by weight of a surfactant selected from the group consisting of water soluble alkyl sulfates containing from about 8 to about 18 carbon atoms in the alkyl group;
- b. from about 2% to 25% by weight of a particulate expanded perlite abrasive material, substantially all of said material ranging in particle size from 1 micron to 190 microns, said material having an average specific gravity ranging from about 0.2 to 2.2;
- c. from about 0.1% to 10% by weight of a bleaching agent which yields hypochlorite species in aqueous solution;
- d. from about 1% to 30% by weight of a suspending agent which serves to maintain said expanded perlite abrasive material dispersed throughout said liquid composition wherein said suspending agent is an inorganic colloid-forming clay selected from the group consisting of smectites, attapulgites and mixtures thereof;
- and
- e. the balance of said liquid composition consisting essentially of a filler selected from the group consisting of water and mixtures of water and inorganic salts, the concentration of water ranging from about 10% to 90% by weight of the composition.
3 more elements
A composition in accordance with claim 55 wherein
- a. the surfactant is a water-soluble alkyl sulfate containing from about 8 to 18 carbon atoms in the alkyl group;
- b. substantially all of the particulate expanded perlite abrasive material ranges in particle size from about 20 microns to 110 microns;
- c. the inorganic salt component of the filler is water-soluble and is selected from the group consisting of carbonates, bicarbonates, sesquicarbonates, silicates, pyrophosphates, phosphates, tetraborates, and mixtures thereof;
- d. the bleaching agent is selected from the group consisting of alkali metal hypochlorites, alkaline earth metal hypochlorites, hypochlorite addition products, chloramines, chlorimines, chloramides, and chlorimides and is present to the extent of from about 0.2% to 5% by weight of the composition;
- e. the suspending agent is a smectite clay selected from the group consisting of montmorillonites, volchonskoites, nontronites, beidellites, hectorites, saponites, sauconites and vermiculites.
2 more elements
Dependencies are inferred from the claim text.