US3856014A - Sanitary napkin with porous resin powder deodorant - Google Patents
Sanitary napkin with porous resin powder deodorant Download PDFInfo
- Publication number
- US3856014A US3856014A US00317795A US31779572A US3856014A US 3856014 A US3856014 A US 3856014A US 00317795 A US00317795 A US 00317795A US 31779572 A US31779572 A US 31779572A US 3856014 A US3856014 A US 3856014A
- Authority
- US
- United States
- Prior art keywords
- sanitary napkin
- layer
- deodorant
- water
- paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002781 deodorant agent Substances 0.000 title claims abstract description 60
- 239000000843 powder Substances 0.000 title claims abstract description 41
- 239000011347 resin Substances 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 title claims abstract description 27
- 239000000835 fiber Substances 0.000 claims abstract description 40
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002253 acid Substances 0.000 claims abstract description 16
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 150000004982 aromatic amines Chemical class 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- CWLKGDAVCFYWJK-UHFFFAOYSA-N 3-aminophenol Chemical compound NC1=CC=CC(O)=C1 CWLKGDAVCFYWJK-UHFFFAOYSA-N 0.000 claims description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- 239000005871 repellent Substances 0.000 claims description 8
- 239000005909 Kieselgur Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 7
- 229960001755 resorcinol Drugs 0.000 claims description 7
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229940018564 m-phenylenediamine Drugs 0.000 claims description 6
- 239000007859 condensation product Substances 0.000 claims description 5
- 229940018563 3-aminophenol Drugs 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 230000006872 improvement Effects 0.000 claims description 2
- 229960003742 phenol Drugs 0.000 claims 1
- 230000001877 deodorizing effect Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 239000012530 fluid Substances 0.000 description 11
- 230000002378 acidificating effect Effects 0.000 description 7
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000003729 cation exchange resin Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000003957 anion exchange resin Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 such for example Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 241001598984 Bromius obscurus Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
- A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
- A61F2013/51443—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being impervious to fluids and being air permeable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53445—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
Definitions
- porous resin powder in the form of its acid salt the resin having been produced by the condensation of an [51] Int. A6lf 13/16 [58] Field of Search 128/284, 286, 287, 290,
- the sanitary napkin containing the layer is particularly effective in deodorizing a malodorous liquid.
- Another object of the present invention is to provide a sanitary napkin which contains at least one layer of staple fibers to which a deodorant powder in the form of its acid salt is adhered, said napkin functioning to absorb the malodorous constituents of a fluid.
- a further object of the present invention is to provide a sanitary napkin which is effective in adsorbing and diffusing a malodorous fluid.
- Still another object of the present invention is to provide a sanitary napkin which although being thin in thickness and small in size, is nevertheless effective in maintaining the desired deodorizing and adsorbing effects.
- FIGURE is a perspective view of a sanitary napkin according to the present invention.
- element I0 is a non-woven fabric
- 11 is a water-adsorbing paper
- 12 is a wate r-repellent paper
- 13 is a water-proof paper
- 14 is a thread
- 15 is a sheet made of staple fibers which contain the deodorant powder of the present invention.
- the non-woven fabric 10 is made in the form of a closed container, which acts as a wrapper to protect the materials contained therein and help them retain their shape.
- two sheets of water-adsorbing paper 11, a sheet of staple fibers 15, another two sheets of wateradsorbing paper 11, another sheet of staple fibers 15, two sheets of water-repellent paper 12 and a sheet of water-proof paper 13 are piled together in this order, and a sheet of water-repellent paper 12 is positioned at both sides of the accumulated materials so as to substantially cover said sides.
- the materials are arranged in such a way that the upper side of the water-adsorbing paper 11 is next to the inner side of that portion of the wrapper which does not contain the thread, as illustrated in the FIGURE. Both the open sides are sealed at an appropriate length.
- the side of the napkin containing the thread 14 is the exterior side of the napkin, and as such should not come into contact with the body of the user. Only the opposite or interior side of the napkin should contact the body of the user.
- the materials and shapes of the non-woven fabric, the water-adsorbing paper, the water-repellent paper, the water-proof paper and the thread conventionally employed and known in the art may also be used for the sanitary napkin of the present invention, and no limitav tions are placed on these materials and shapes unless undesirable effects can be expected by their use.
- the essential feature of the present invention is that at least one of the layers or sheets of the napkin is made of staple fibers which contain a specific deodorant powder.
- the sanitary napkin of the present invention is arranged as shown in the accompanying drawing although some modifications and rearrangements of the materials and shape may be possible without decreasing the desired effects to be attained.
- a sheet of staple fibers containing activated carbon powder may be used for either of two sheets of staple fibers 15.
- the deodorant powder of the invention is disposed in the water-adsorbing papers between the two sheets of staple fibers 15.
- the shape of the wrapper is also not limited to that specifically disclosed in the accompanying drawing, and various modifications and arrangements can be contrived to meet practical needs.
- the deodorant powder may be used alone or as a mixture with other water-absorbing agents and/0r fillers known in the art.
- the deodorant of the present invention is a porous resin produced from an aromatic amine, with or without a phenol, by condensation with formaldehyde.
- the condensation product has as a partial structure the following chemical structure:
- the resin may be specifically produced from starting materials, such for example, one mole of m-phenylene diamine, one mole of phenol or resorcin, and three moles of formaldehyde, using as a catalyst an acid, such for example, hydrochloric acid or oxalic acid, in substantially the same manner as utilized in conventional processes of manufacturing phenolic resins.
- starting materials such for example, one mole of m-phenylene diamine, one mole of phenol or resorcin, and three moles of formaldehyde, using as a catalyst an acid, such for example, hydrochloric acid or oxalic acid, in substantially the same manner as utilized in conventional processes of manufacturing phenolic resins.
- starting materials m-aminophenol and formaldehyde
- a porous structure of the resin may be accomplished by the addition of a conventional aqueous inorganic salt to the reaction system at the beginning of the reaction.
- the re sulting resin is then heat-treated
- the porous resinous powder of the present invention is stable in water, solutes and alkalis, and is not decomposable at temperatures below 100C. Said resin is capable of holding a comparably large amount of water in its structure as will be clear from the hydrophilic property of the amino groups on the aromatic rings and its porous structure.
- the content of water is preferably about 30 to 50 per cent.
- the resin of the present invention is in the form of its acid salt for practical use.
- the acid salt may be produced by neutralizing the amino groups in the resin with acids. The following is a reaction scheme showing the neutralization reaction.
- R is a resin body and X is a residue of an acid.
- the acids which can be used for the neutralization of the resin generally are those which are not harmful to human beings, such as tartaric acid.
- the acid used for the neutralization of the resin is liberated in the water in a very small amount, a napkin containing the deodorant of the present invention does not cause any harm to the user because of the presence of the acid liberated in the water contained in the napkin. It should also be noted that no dissolution of other substances such as, for example, formaldehyde occurs.
- the functions of deodorizing various malodorous constituents by the deodorant are considered as follows: 1. Basic malodorous constituents such as ammonia, amines, and the like: The malodorous constituents are first dissolved in the water contained in the deodorant and then reacted with acids adhered to the resin to form an odor-free salt. For example, ammonia is converted to a malodor-free salt as follows:
- Neutral malodorous constituents such as aromatic hydrocarbons:
- the neutral malodorous constituents may be deodorized by intramolecular, physical adsorption because the deodorant is porous and it has a very large surface area.
- said deodorants having the above-mentioned adsorbing properties possess a more effective adsorbing capacity when compared to deodorants conventionally available in the art.
- the deodorants of the present invention have the capacity of adsorbing acetic acid about 3 to 4 times more than the cation-exchange resin.
- the cation-exchange resin has no adsorbing capacity for hydrogen sulfide, as do the deodorants of the present invention.
- the deodorants of the present invention adsorb ammonia approximately 30 times more than the basic aninon-exchange resin and they show an adsorbing capacity for trimethylamine, whereas the basic anionexchange resin has no such capacity.
- the deodorants of the present invention have about 3 to 4 times the adsorbing capacity for ammonia as said activated coconut carbon, and about 4 to 5 times the adsorbing capacity for acetic acid.
- the ammonia that was adsorbed on the active coconut carbon at 10C. was desorbed in an amount of about to per cent, when the active carbon was heated to 50C.
- the ammonia adsorbed by the deodorants of the present invention was only slightly desorbed, that is, in an amount of about 1 to 2 per cent under the same conditions.
- the resin is an amphoteric ion-exchange resin, not a mere anion-exchange resin; (2) its exchange groups (R-NH and R-OH) act as weak electrolytes; and (3) a gas tends to penetrate into the resin because of its porous structure.
- a cation-exchange resin having strongly acidic exchange groups can easily adsorb basic malodorous constituents, but it does not adsorb acidic malodorous constituents because the repellency of the homogenous electric charges of the strong exchange groups of the cationexchange resin and the acidic malodorous constituents makes it difficult for the constituents to transfer into the liquid phase in the resin.
- the resin of the present invention has weak exchange groups, thereby making it capable of adsorbing both acidic and basic malodorous constituents.
- the deodorants may be employed alone or as a mixture with unharmful agents, such as diatomaceous earth, conventionally employed in the art as a water-adsorbent or filler.
- unharmful agents such as diatomaceous earth
- these additives may be used in an amount of about 10 to 20' parts by weight, preferably 16 parts by weight, with respect to one part by weight of the deodorant.
- the layer or sheet of the present invention is made out of staple fibers as a support to which the deodorant powder alone or as a mixture with a water-adsorbent or filler is adhered.
- the staple fibers may be the same as those employed for conventional sanitary napkins, such as cotton linter and the like. Pulp fiber is particularly preferred.
- the staple fibers may be used in an amount of about 50 to 500 parts by weight, preferably 200 parts by weight, with respect to a part by weight of the deodorant.
- Said sheet may be prepared by spreading a ground pulp band with the deodorant powders. However, the deodorant powders tend to peel off or drop from the sheet prepared in this manner causing a decrease in the desired deodorizing effect.
- the preferred preparation of the sheet is accomplished by a procedure discussed hereinbelow.
- the procedure enables the deodorants to adhere adhesively to the fiber.
- the satisfactory adherence effect may be produced by scattering the powder during ventillation of the pulp by a pulp machine following conventional purification procedures.
- the desired sheet of pulp fibers and the deodorant may be prepared from pulp bands in a conventional manner by maintaining the deodorant powders and the ground pulp in a fluidized state in a wind pipe.
- the deodorant powders are introduced into the wind pipe through a powder supply pipe and the powders are joined in the pipe with the ground pulp which is ventilated into the wind pipe through a crusher.
- the sanitary napkin having the features described above permits a fluid to penetrate through the nonwoven fabric and the water-adsorbing paper into the surface of the sheet of staple fibers containing the deodorant powder.
- the fluid spreads itself into the sheet while being adsorbed and diffused by the combined action of the liquid-adsorbing action of said powder itself and the liquid-adsorbility between the fibers with their effective liquid adsorbing surfaces increased by the adherence of the powder thereon. Accordingly, the fluid is effectively deodorized by contact with the deodorant powder adhered to the surfaces of each of said fibers.
- agaseous malodor generated from the fluid is also adsorbed by the deodorant powder.
- the fluid spreads and distributes itself in the napkin not only in the vertical direction (depth direction) but also in the horizontal direction (the plane direction) resulting in an increase in the amount of liquid which can be adsorbed.
- the napkin of the present invention can be reduced in size while still maintaining the effective deodorant capacity. Said advantages were confirmed by an organoleptic test using a napkin of normal size (a total weight of 6.5 to 7 grams) having the same shape and structure as shown in the accompanying drawing, and containing 0.02 gram of the deodorant powder, 0.28 gram of diatomaceous earth and 4 grams of pulp staple fibers.
- a sanitary napkin which comprises at least one layer of staple fibers in the form of a pad, the improvement wherein said pad contains as a deodorant a porous resin powder which is the condensation product of an aromatic amine with fonnaldehyde in the form of its acid salt.
- condensation product is one layer made of a pulp staple fiber containing an aromatic amine selected from the group consisting of m-phenylenediamine and m-aminophenol, with or without phenol or resorcin, and formaldehyde, said reaction product being in the form of the salt of tartaric acid.
- a pulp staple fiber is used in an amount of about 50 to 500 parts by weight with respect to one part by weight of the deodorant powder.
- the sanitary napkin according to claim 1 comprising a composite of two layers of water-adsorbing paper, a layer of staple fibers, another two layers of water-adsorbing paper, another layer of staple fibers, two layers of water-repellent paper and a layer of waterproof paper which are arranged in this order, said composite being provided at both sides thereof with a layer of water-repellent paper.
- the sanitary napkin according to claim 1 comprising one layer of staple fibers containing said deodorant, said layer being surrounded on one side with at least one layer of water-repellant paper and on the other side with at least one layer of water absorbing paper.
- the sanitary napkin according to claim 13 comprising two layers of staple fibers containing said deodorant, said layers being separated by at least one layer of water absorbing paper and surrounded on one side with at least one layer of water-repellant paper and on the other side with at least one layer of water absorbing paper.
- the sanitary napkin of claim 12 housed within a non-woven fabric wrapper.
- the sanitary napkin of claim 13 housed within a non-woven fabric wrapper.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Dermatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47106072A JPS5021793B2 (enrdf_load_stackoverflow) | 1972-10-23 | 1972-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3856014A true US3856014A (en) | 1974-12-24 |
Family
ID=14424382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00317795A Expired - Lifetime US3856014A (en) | 1972-10-23 | 1972-12-22 | Sanitary napkin with porous resin powder deodorant |
Country Status (6)
Country | Link |
---|---|
US (1) | US3856014A (enrdf_load_stackoverflow) |
JP (1) | JPS5021793B2 (enrdf_load_stackoverflow) |
DE (1) | DE2300871A1 (enrdf_load_stackoverflow) |
FR (1) | FR2203616B1 (enrdf_load_stackoverflow) |
GB (1) | GB1351439A (enrdf_load_stackoverflow) |
NL (1) | NL7301417A (enrdf_load_stackoverflow) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3939838A (en) * | 1974-08-20 | 1976-02-24 | Unicharm Kabushiki Kaisha | Article for treating menstrual fluid |
US4145464A (en) * | 1976-10-15 | 1979-03-20 | Scott Paper Company | Absorbent articles |
US4237591A (en) * | 1977-05-23 | 1980-12-09 | Personal Products Company | Deodorant mini-pad sanitary napkin |
DE3146067A1 (de) * | 1980-11-20 | 1982-07-15 | Uni-Charm Corp., Kawanoe, Ehime | "aufbau einer einzelverpackung fuer hygienische waren und verfahren zum einzelverpacken" |
US4547195A (en) * | 1982-07-26 | 1985-10-15 | Kimberly-Clark Corporation | Sanitary napkin with malodor counteractant means |
US4659571A (en) * | 1985-03-20 | 1987-04-21 | Nl Industries, Inc. | Compressed powder formulation containing organophilic clay and a process for making the formulation |
US4753643A (en) * | 1986-02-28 | 1988-06-28 | Aprica Kassai Kabushikikaisha | Disposable diaper |
US5122407A (en) * | 1990-06-20 | 1992-06-16 | Kimberly-Clark Corporation | Odor-removing cover for absorbent pads and method of making same |
US20030187412A1 (en) * | 2002-03-29 | 2003-10-02 | Martin David A. | Odor absorbing device and method |
US6657098B1 (en) * | 1999-09-01 | 2003-12-02 | Kao Corporation | Absorbent article |
US6852100B1 (en) * | 1998-07-07 | 2005-02-08 | Bristol-Myers Squibb Company | Pouches for collecting matter excreted by the body |
US20060251609A1 (en) * | 2005-05-06 | 2006-11-09 | Sojka Marci E | Malodor reduction patch |
US20080269710A1 (en) * | 2007-04-27 | 2008-10-30 | The Procter & Gamble Company | Hygiene article having a wipe and powdered substrate combination |
USD608443S1 (en) | 2009-07-15 | 2010-01-19 | Carleen Thompson | Deodorized and scented baby garment |
US8231590B2 (en) | 2003-12-30 | 2012-07-31 | Kimberly-Clark Worldwide, Inc. | Visually coordinated absorbent product |
US10653571B2 (en) | 2015-12-10 | 2020-05-19 | The Procter & Gamble Company | Article comprising odor control composition |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PH11540A (en) * | 1975-05-30 | 1978-03-10 | Procter & Gamble | Nether garment for and method of controlling crotch odors |
DE3065372D1 (en) | 1979-09-07 | 1983-11-24 | Kingsdown Medical Consultants | Wound dressing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2418907A (en) * | 1943-09-04 | 1947-04-15 | Personal Products Corp | Sanitary napkin |
US2634229A (en) * | 1949-07-20 | 1953-04-07 | Int Cellucotton Products | Sanitary napkin |
US2643969A (en) * | 1947-04-17 | 1953-06-30 | Homemakers Products Corp | Diaper |
US2837462A (en) * | 1954-12-29 | 1958-06-03 | Chicopee Mfg Corp | Nonwoven fabric and products containing bacteristatic agent |
US3691271A (en) * | 1969-02-04 | 1972-09-12 | Roger Charle | Sanitary napkin having homogeneously distributed microcapsules filled with delay releasable bactericidal and fungicidal deodorant |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3340875A (en) * | 1964-02-12 | 1967-09-12 | Scott Paper Co | Deodorized sanitary napkin |
-
1972
- 1972-10-23 JP JP47106072A patent/JPS5021793B2/ja not_active Expired
- 1972-12-22 US US00317795A patent/US3856014A/en not_active Expired - Lifetime
-
1973
- 1973-01-04 GB GB47073A patent/GB1351439A/en not_active Expired
- 1973-01-09 DE DE2300871A patent/DE2300871A1/de active Pending
- 1973-01-23 FR FR7302291A patent/FR2203616B1/fr not_active Expired
- 1973-01-31 NL NL7301417A patent/NL7301417A/xx not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2418907A (en) * | 1943-09-04 | 1947-04-15 | Personal Products Corp | Sanitary napkin |
US2643969A (en) * | 1947-04-17 | 1953-06-30 | Homemakers Products Corp | Diaper |
US2634229A (en) * | 1949-07-20 | 1953-04-07 | Int Cellucotton Products | Sanitary napkin |
US2837462A (en) * | 1954-12-29 | 1958-06-03 | Chicopee Mfg Corp | Nonwoven fabric and products containing bacteristatic agent |
US3691271A (en) * | 1969-02-04 | 1972-09-12 | Roger Charle | Sanitary napkin having homogeneously distributed microcapsules filled with delay releasable bactericidal and fungicidal deodorant |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3939838A (en) * | 1974-08-20 | 1976-02-24 | Unicharm Kabushiki Kaisha | Article for treating menstrual fluid |
US4145464A (en) * | 1976-10-15 | 1979-03-20 | Scott Paper Company | Absorbent articles |
US4237591A (en) * | 1977-05-23 | 1980-12-09 | Personal Products Company | Deodorant mini-pad sanitary napkin |
DE3146067A1 (de) * | 1980-11-20 | 1982-07-15 | Uni-Charm Corp., Kawanoe, Ehime | "aufbau einer einzelverpackung fuer hygienische waren und verfahren zum einzelverpacken" |
US4547195A (en) * | 1982-07-26 | 1985-10-15 | Kimberly-Clark Corporation | Sanitary napkin with malodor counteractant means |
US4659571A (en) * | 1985-03-20 | 1987-04-21 | Nl Industries, Inc. | Compressed powder formulation containing organophilic clay and a process for making the formulation |
US4753643A (en) * | 1986-02-28 | 1988-06-28 | Aprica Kassai Kabushikikaisha | Disposable diaper |
US5122407A (en) * | 1990-06-20 | 1992-06-16 | Kimberly-Clark Corporation | Odor-removing cover for absorbent pads and method of making same |
US6852100B1 (en) * | 1998-07-07 | 2005-02-08 | Bristol-Myers Squibb Company | Pouches for collecting matter excreted by the body |
US6657098B1 (en) * | 1999-09-01 | 2003-12-02 | Kao Corporation | Absorbent article |
US20030187412A1 (en) * | 2002-03-29 | 2003-10-02 | Martin David A. | Odor absorbing device and method |
US8231590B2 (en) | 2003-12-30 | 2012-07-31 | Kimberly-Clark Worldwide, Inc. | Visually coordinated absorbent product |
US8936584B2 (en) | 2003-12-30 | 2015-01-20 | Kimberly-Clark Worldwide, Inc. | Visually-coordinated absorbent product |
US20060251609A1 (en) * | 2005-05-06 | 2006-11-09 | Sojka Marci E | Malodor reduction patch |
US8058500B2 (en) * | 2005-05-06 | 2011-11-15 | Kimberly-Clark Worldwide, Inc. | Malodor reduction patch |
US20080269710A1 (en) * | 2007-04-27 | 2008-10-30 | The Procter & Gamble Company | Hygiene article having a wipe and powdered substrate combination |
USD608443S1 (en) | 2009-07-15 | 2010-01-19 | Carleen Thompson | Deodorized and scented baby garment |
US10653571B2 (en) | 2015-12-10 | 2020-05-19 | The Procter & Gamble Company | Article comprising odor control composition |
Also Published As
Publication number | Publication date |
---|---|
JPS4964289A (enrdf_load_stackoverflow) | 1974-06-21 |
JPS5021793B2 (enrdf_load_stackoverflow) | 1975-07-25 |
GB1351439A (en) | 1974-05-01 |
DE2300871A1 (de) | 1974-04-25 |
FR2203616B1 (enrdf_load_stackoverflow) | 1976-05-14 |
FR2203616A1 (enrdf_load_stackoverflow) | 1974-05-17 |
NL7301417A (enrdf_load_stackoverflow) | 1974-04-25 |
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