Back to results
US 5,635,196 AGranted
Method for preparing a disinfecting and gelling composition and resulting composition
OwnerWilliam J. Murphyinventor
Life of this patent
Estimating the term…
Abstract
The method of disinfecting and solidifying an aqueous liquid medical waste containing microorganisms is provided in which dry glutaraldehyde is used as the disinfectant. In preparing the product for use in the method dry glutaraldehyde is mixed with a superabsorbant to partially transfer an aqueous solution from the dry glutaraldehyde to the superabsorbant.
Claims8
A method of preparing a disinfecting and gelling composition, comprising the steps of:
- (a) selecting a free-flowing granular glutaraldehyde source material composed of non-swelling desiccant silica particles impregnated with a 25 to 75% aqueous solution of glutaraldehyde;
- and
- (b) mixing said granular glutaraldehyde material with free-flowing granules of a gel-forming superabsorbent, from 50 to 300 parts by weight of said glutaraldehyde material being present per 100 parts of said superabsorbent, said mixing blending the glutaraldehyde solution-containing particles with the superabsorbent granules, continuing said mixing until sufficient glutaraldehyde solution is transferred to said superabsorbent granules to impart a yellowish color thereto, then terminating said mixing before said superabsorbent granules become swollen to a non-free-flowing condition, thereby obtaining a stable admixture for effectively disinfecting and gelling aqueous wastes.
A method of preparing a disinfecting and gelling composition, comprising the steps of:
- (a) selecting a free-flowing granular glutaraldehyde source material consisting of granular aggregates of non-swelling desiccant silica particles impregnated with a 25 to 75% aqueous solution of glutaraldehyde;
- (b) mixing said granular aggregates with a particulate non-swelling, non-impregnated desiccant, one part of desiccant being present per 40 to 100 parts of said aggregates, said mixing converting at least part of said aggregates to a powder and producing a free-flowing admixture;
- and
- (c) mixing said admixture with free-flowing granules of a gel-forming superabsorbent, from 50 to 300 parts of said glutaraldehyde material being present per 100 parts of superabsorbent, said mixing blending the glutaraldehyde solution-containing particles with the superabsorbent granules, continuing said mixing until sufficient glutaraldehyde solution is transferred to said superabsorbent granules to impart a yellowish color thereto, then terminating said mixing before said superabsorbent granules become swollen to a non-free flowing condition, thereby obtaining a stable admixture for effectively disinfecting and gelling aqueous wastes.
1 more element
Dependencies are inferred from the claim text.