Absorbing material containing an isothiazoline-one-3 derivative,

Details Absorbing material containing an isothiazoline-one-3 derivative, Absorbing material containing an isothiazoline-one-3 derivative,

1984-11-23

1987-12-01

Yasko, John D.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604265, A61F 1316

Patent

active

047101849

DESCRIPTION:

BRIEF SUMMARY
The invention relates mainly to the field of personal hygiene.
Its object is an absorbing material consisting of a water-insoluble hydrocolloidal polyelectrolyte which absorbs an aqueous liquid several times its own weight.
Another object is the application of this material and a manufacturing process for it.


STATE OF THE ART

It is known that urine is originally sterile (except for urinary infection) but contaminated the moment it leaves the urethra by the perineal flora accommodating a large number of bacteria of which 80% consist of: proteus (50%), klebsiella, pseudomonas, coli. Furthermore, the urine represents an excellent growth substrate for these germs.
Again, menstrual blood, which contains proteins, various amines and lipids, also is a culture medium for the above-cited bacteria.
Thus, thanks to the ureases of certain bacteria, such as proteus and klebsiella, urea is transformed into ammonia in the reaction below: ##STR2## The amino acids constituting the proteins also undergo a degradation resulting in the formation of ammonia.
Other bodies, such as the blood lipids, also are transformed into other degradation products as shown below: ##STR3## Illustrative fatty acids formed are butyric acid, isobutyric, and isovaleric acids.
All these reactions resulting from bacterial activity are characterized by resulting into compounds of a highly unpleasant odor.
As regards individuals with urinary and/or fecal incontinence and menstruating women, this perineal flora is directly in contact with the body fluids absorbed by the absorbing pad whereby the bad odors are formed from the action of the bacteria on these fluids. While possibly just tolerable for a baby, this phenomenon is psychologically hard to bear for an adult.
To eliminate this drawback, it has already been suggested to make use of a bactericidal substance in the absorbing pads of menstrual napkins and diapers.
Thus, French Pat. No. 2,490,093 (Landstingens Inkopscentral Lic Ekonomisk Forening) describes the incorporation, preferably at the surface, of a water-soluble copper salt in an absorbing pad consisting of cellulose fibers. In its ionic form, copper is known for its bactericidal and fungicidal properties.
This procedure, however, entails certain drawbacks. The bactericide deposited on the pad attacks the user's skin; this may lead to certain roughness and breaks in the skin, and it may even weaken the natural defenses.
Furthermore, the industrial implementation of that process is beset by certain difficulties as it is necessary to treat the entire pad surface.
Moreover, the deposition procedures (powdering, subpowdering) amount to a more than trivial danger to the personnel.
The European patent application No. 0 019 371 (Unilever) suggests incorporating a transition-metal ion (such as of copper or zinc) into an improved retention additive (IRA) which, as denoted by its name, is a body incorporated into the absorbing pad in order to improve its absorption capacity. An ion bond is set up between the anion groups (in particular COO) and the transition-metal ion. This bond is sufficiently unstable to allow the transition-metal ion to migrate out of the IRA and into the pad, and to induce the large proteins to coagulate. However, in order to achieve this migration of ions out of the IRA, it is necessary to incorporate them in relatively large amounts as about 80% of the COOH are neutralized. This represents a drawback in that the rapidity of gelling of the IRA is limited and its absorption capacity is lowered.
It is known, furthermore, that transition metals such as copper or zinc are bactericidal, and hence toxic, and that toxicologically speaking they should preferably be present in very low doses.
The object of the invention is to offer superabsorbant with bacterial activity that can be transmitted to its environment consisting of the absorbing pad. One obtains thereby the advantage of eliminating the chance of skin irritation before the arrival of the nutrient liquid.
In present-day language, the expression "superabsorbent" is synonymous

REFERENCES:
patent: 3562283 (1971-02-01), Lewis et al.
patent: 4062859 (1977-12-01), Weiler et al.
patent: 4169949 (1979-10-01), Weiler
patent: 4243703 (1981-01-01), Lewis et al.
patent: 4281136 (1981-07-01), Virgilio et al.
patent: 4302240 (1981-11-01), Miller et al.
patent: 4325201 (1982-04-01), Lewis et al.
patent: 4328347 (1982-05-01), Virgilio et al.
patent: 4460642 (1984-07-01), Eriede et al.
patent: 4508908 (1985-04-01), Virgilio et al.
patent: 4542169 (1985-09-01), Costerton
patent: 4552752 (1985-11-01), Amick

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