JPH02324B2 - - Google Patents
Info
- Publication number
- JPH02324B2 JPH02324B2 JP18025282A JP18025282A JPH02324B2 JP H02324 B2 JPH02324 B2 JP H02324B2 JP 18025282 A JP18025282 A JP 18025282A JP 18025282 A JP18025282 A JP 18025282A JP H02324 B2 JPH02324 B2 JP H02324B2
- Authority
- JP
- Japan
- Prior art keywords
- bath
- sodium
- weight
- acid
- weakly acidic
- 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
Links
- 239000000654 additive Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- 230000002378 acidificating effect Effects 0.000 claims description 14
- 230000000996 additive effect Effects 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229940074404 sodium succinate Drugs 0.000 claims description 4
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 claims description 4
- 239000001384 succinic acid Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 10
- 239000001569 carbon dioxide Substances 0.000 description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000010949 copper Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- 230000017531 blood circulation Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 210000003298 dental enamel Anatomy 0.000 description 5
- 239000001530 fumaric acid Substances 0.000 description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 5
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000003205 fragrance Substances 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- -1 etc. Chemical class 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000010446 mirabilite Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 206010016352 Feeling of relaxation Diseases 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007884 disintegrant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 241000411851 herbal medicine Species 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229940024999 proteolytic enzymes for treatment of wounds and ulcers Drugs 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910000031 sodium sesquicarbonate Inorganic materials 0.000 description 1
- 235000018341 sodium sesquicarbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Landscapes
- Cosmetics (AREA)
Description
本発明は新規な弱酸性入浴剤、更に詳細には、
炭酸水素ナトリウムとコハク酸又はコハク酸―ナ
トリウムを含有し、浴湯に投入すると速やかに反
応して炭酸ガスを発生して、これを溶存させて血
流増進効果を奏し、しかも風呂釡、浴槽をいため
ることのない弱酸性入浴剤に関する。
入浴剤は一般に芒硝、硼砂、イオウ、食塩、炭
酸塩等の無機塩類混合物に香料、着色料、植物エ
キス、有機酸等を配合したもので、浴湯に香り、
色調を与えたり、皮膚面に適度な刺激を与えるこ
とにより血液の循環を活発にし、疲労回復、新陳
代謝を増進させるものである。これらの入浴剤の
中で、炭酸塩と酸を組合せた発泡性入浴剤があ
り、これは浴湯中に炭酸ガスの気泡を発生させ
て、リラツクス感や爽快感を高め、入浴を楽しく
する効果を有する。
しかし、従来家庭において汎用されている入浴
剤は、芒硝、炭酸水素ナトリウム、炭酸ナトリウ
ム等の無機塩を主成分とした中性乃至弱アルカリ
性のものであり、酸性乃至は弱酸性の入浴剤は風
呂釡あるいは浴槽をいためるとされていて、未だ
実用化されていない。
しかしながら、本発明者は、人の肌のPHは弱酸
性であるので、弱酸性の入浴剤は肌に対して好ま
しい影響を与えることに鑑み、鋭意研究を行つた
結果、酸として従来汎用されているクエン酸、酒
石酸に代えてフマル酸、コハク酸、リン酸又はこ
れらの塩を使用して弱酸性入浴剤とすると、従来
危惧されていた風呂釡及び浴槽の腐食がほとんど
ないこと、特に炭酸水素ナトリウムとコハク酸又
はコハク酸―ナトリウムを組合せた発泡性入浴剤
は、これを浴湯に投入すると速やかに反応して炭
酸ガスを発生し、これがCO2分子として浴湯中に
溶存されることを見出し、本発明を完成した。
すなわち、本発明は、(a)炭酸水素ナトリウム、
(b)炭酸水素ナトリウムの0.2〜1.5重量倍のコハク
酸及び炭酸水素ナトリウムの0.4〜３重量倍のコ
ハク酸―ナトリウムから選ばれる酸、並びに(c)該
酸の0.3〜５重量倍の硫酸塩及び／又は塩酸塩を
含有し、浴湯に溶解したときのPHが５〜７（0.01
重量％水溶液）になるようにしたことを特徴とす
る弱酸性入浴剤を提供するものである。
酸と炭酸水素ナトリウムの配合量は、入浴剤を
浴湯に加えたとき浴湯が弱酸性を呈するような比
率、すなわち入浴剤の0.01重量％水溶液がPH５〜
７になるようにすることが必要である。PHを上記
範囲に調整する理由は、PHが酸性の場合には炭酸
ガスはCO2分子として存在して血流促進作用を示
すが、PHがアルカリ性側では炭酸ガスはCO3 2-イ
オンいあるいはHCO3 -イオンとして存在するた
め当該効果は全く見られないこと、またPHが５よ
り低いと肌への刺激が強いと共に風呂釡等をいた
める惧れがあるためである。
本発明においては、炭酸水素ナトリウムを必須
成分として含有するが、本発明の効果を損わない
範囲で炭酸ナトリウムやセスキ炭酸ナトリウムを
含んでも良い。このときは製品を浴湯中に溶解し
たときのPHが５〜７（0.01重量％水溶液）の範囲
内におさまるようにすることが必要である。
また、本発明入浴剤には、上記必須成分のほか
に、硫酸ナトリウム、硫酸マグネシウム、硫酸亜
鉛等の硫酸塩あるいは塩化ナトリウム等の塩酸塩
等を配合することができる。これらの配合量は酸
に対し30〜500重量％、特に50〜300重量％が好ま
しい。
更に、本発明入浴剤には、一般に配合されてい
る。香料、色素、あるいはビタミン類、温泉の有
効成分、蛋白分解酵素、海草エキス、アルギン酸
ナトリウム、ラノリン、シリコン、両性界面活性
剤、生薬あるいはその抽出エキス等を配合して、
効果を一層高めることができる。
本発明の入浴剤は、粉末、顆粒、結晶、錠剤等
の形にすることができ、これらの製剤化のため
に、必要に応じて賦形剤、結合剤、崩壊剤、滑沢
剤等を添加することもできる。
叙上のような本発明入浴剤は弱酸性でありなが
ら風呂釡、浴槽をいためることがなく、PHが人の
肌と大略同一であるので肌に好影響を与える。し
かも浴湯に投ずるとき発生する炭酸ガスは、アル
カリ性ではイオンとして存在するため血流促進効
果はないが、本発明の如く酸性領域ではCO2分子
として存在して肌の血行を促進する優れた効果を
奏する。
次に実施例を挙げて説明する。
実施例 １
表―１に示す組成の入浴剤を調製し、このもの
の銅製風呂釡及びホーロー製浴槽への影響を調べ
た。
結果は表―２のとおりである。
(1) 銅製風呂釡に対する影響
銅粉よりのCu2+の溶出
各入浴剤の0.2％水溶液25mlに銅粉末100mg
を加え、約80℃の温浴中で一昼夜処理し、液
中に溶出したCu2+を原子吸光度で定量した。
銅製風呂釡よりのCu2+の溶出
銅製風呂釡（金剛燃器製作所製）の浴槽に
各入浴剤の0.2％水溶液180を入れ、60℃に
なるまで加熱し、一昼夜放置した。２日目も
同様な操作を行い、３日目（48時間後）の風
呂水についてCu2+を定量した。
(2) ホーロー浴槽への影響
テストプラスター（クローズドパツチテスト用
絆創膏）に各入浴剤の0.2％水溶液を含浸させ、
ホーローテストピース（日本琺瑯工業会より入
手）上に貼付し、室温に放置した。48時間後にテ
ストプラスターをはがし、ホーロー面に対する影
響を次の項目、評点にて評価した。
光沢の変化
〇：変化なし △：やや変化 ×：変化あり
変退色
〇：変化なし △：やや変化 ×：変化あり
The present invention provides a novel weakly acidic bath additive, more specifically,
Contains sodium bicarbonate and succinic acid or sodium succinate, and when added to bath water, it reacts quickly and generates carbon dioxide gas, which dissolves and has the effect of promoting blood flow. Concerning weakly acidic bath additives that do not get damaged. Bath additives are generally a mixture of inorganic salts such as mirabilite, borax, sulfur, salt, carbonate, etc., combined with fragrances, colorants, plant extracts, organic acids, etc., and add fragrance to bath water.
By adding color and moderate stimulation to the skin surface, it activates blood circulation, relieves fatigue, and improves metabolism. Among these bath additives, there are effervescent bath additives that combine carbonate and acid, which generate carbon dioxide gas bubbles in the bath water, increasing the feeling of relaxation and refreshment, and making bathing more enjoyable. has. However, the bath additives commonly used in households are neutral or weakly alkaline, mainly containing inorganic salts such as mirabilite, sodium bicarbonate, and sodium carbonate, while acidic or weakly acidic bath additives are It is said to damage pots or bathtubs, and has not yet been put to practical use. However, since the PH of human skin is weakly acidic, the inventors of the present invention have conducted extensive research and found that weakly acidic bath additives have a favorable effect on the skin, and have found that they have not been commonly used as acids. When fumaric acid, succinic acid, phosphoric acid, or their salts are used in place of citric acid and tartaric acid to create a weakly acidic bath additive, there is almost no corrosion of bathtubs and bathtubs, which was a concern in the past. Effervescent bath additives that combine sodium and succinic acid or sodium succinate react quickly when added to bath water and generate carbon dioxide gas, which is dissolved in the bath water as CO 2 molecules. The present invention has been completed. That is, the present invention provides (a) sodium hydrogen carbonate;
(b) an acid selected from succinic acid in an amount of 0.2 to 1.5 times the weight of sodium bicarbonate and sodium succinate in an amount of 0.4 to 3 times the weight of sodium bicarbonate; and (c) a sulfate in an amount of 0.3 to 5 times the weight of the acid. and/or contains hydrochloride, and the pH when dissolved in bath water is 5 to 7 (0.01
The present invention provides a weakly acidic bath additive, characterized in that it is a weakly acidic bath additive (wt% aqueous solution). The amount of acid and sodium bicarbonate should be such that when the bath additive is added to the bath water, the bath water becomes weakly acidic, i.e., a 0.01% by weight aqueous solution of the bath additive has a pH of 5~5.
It is necessary to make it 7. The reason for adjusting the PH to the above range is that when the PH is acidic, carbon dioxide gas exists as CO 2 molecules and exhibits a blood flow promoting effect, but when the PH is alkaline, carbon dioxide gas becomes CO 3 2- ions or This is because the effect is not observed at all because it exists as HCO 3 - ions, and if the pH is lower than 5, it is highly irritating to the skin and may damage bathtubs and the like. In the present invention, sodium hydrogen carbonate is contained as an essential component, but sodium carbonate or sodium sesquicarbonate may also be contained within a range that does not impair the effects of the present invention. In this case, it is necessary to ensure that the pH of the product when dissolved in bath water falls within the range of 5 to 7 (0.01% by weight aqueous solution). In addition to the above-mentioned essential components, the bath additive of the present invention may contain sulfates such as sodium sulfate, magnesium sulfate, zinc sulfate, etc., or hydrochlorides such as sodium chloride. The blending amount of these components is preferably 30 to 500% by weight, particularly 50 to 300% by weight based on the acid. Furthermore, the bath additives of the present invention generally contain such compounds. Contains fragrances, pigments, vitamins, active ingredients from hot springs, proteolytic enzymes, seaweed extracts, sodium alginate, lanolin, silicone, amphoteric surfactants, herbal medicines or their extracts, etc.
The effect can be further enhanced. The bath additives of the present invention can be in the form of powders, granules, crystals, tablets, etc., and excipients, binders, disintegrants, lubricants, etc. may be added as necessary to form these formulations. It can also be added. Although the bath salts of the present invention as mentioned above are weakly acidic, they do not damage bathtubs and bathtubs, and have a positive effect on the skin because the pH is approximately the same as that of human skin. Moreover, the carbon dioxide gas generated when bath water is poured into bath water exists as ions in alkaline conditions and has no effect of promoting blood flow, but in acidic conditions as in the present invention, it exists as CO 2 molecules and has an excellent effect of promoting blood circulation in the skin. play. Next, an example will be given and explained. Example 1 Bath additives having the compositions shown in Table 1 were prepared, and their effects on copper bathtubs and enamel bathtubs were investigated. The results are shown in Table-2. (1) Effect on copper bathtub Elution of Cu 2+ from copper powder 100mg of copper powder in 25ml of 0.2% aqueous solution of each bath additive
was added and treated overnight in a hot bath at about 80°C, and Cu 2+ eluted into the solution was quantified by atomic absorption. Elution of Cu 2+ from a copper bathtub A 0.2% aqueous solution of each bath salt (180%) was placed in a copper bathtub (manufactured by Kongo Renki Seisakusho), heated to 60°C, and left overnight. The same operation was performed on the second day, and Cu 2+ was quantified in the bath water on the third day (48 hours later). (2) Effect on enamel bathtubs Impregnate a test plaster (adhesive for closed patch testing) with a 0.2% aqueous solution of each bath additive.
It was pasted on an enamel test piece (obtained from the Japan Enamel Industry Association) and left at room temperature. After 48 hours, the test plaster was removed and the effect on the enamel surface was evaluated using the following items and ratings. Change in gloss 〇: No change △: Slight change ×: Change discoloration 〇: No change △: Slight change ×: Change
【表】【table】
【表】
実施例 ２
表―３に示す組成の入浴剤を調製し、通常の入
浴剤と同様にして（浴湯に約0.01％加える）３ケ
月間使用した。その結果、風呂釡、浴槽には何の
いたみも変色もなかつた。[Table] Example 2 Bath additives having the composition shown in Table 3 were prepared and used in the same manner as regular bath additives (approximately 0.01% added to bath water) for 3 months. As a result, there was no damage or discoloration in the bathtub or tub.
【表】
実施例 ３
表―４に示す組成の入浴剤（直径４cm、１錠20
ｇ）を40℃、200の湯に溶かした。PH、浴水中
の炭酸ガス濃度が最大に達するまでの時間、溶け
残りの有無について検討した。炭酸ナトリウムと
コハク酸の組合せ(B)では、炭酸ガスの発生及び溶
解が遅く炭酸ナトリウムが底に溶け残る。炭酸水
素ナトリウムとフマル酸の組合せ(C)では、炭酸ガ
スの発生及び溶解が遅く浴湯上にフマル酸が溶け
残る。炭酸ナトリウムとフマル酸の組合せ(D)で
は、炭酸ガスの発生及び溶解が遅く浴湯上にフマ
ル酸、底に炭酸ナトリウムが溶け残る。[Table] Example 3 Bath salts with the composition shown in Table 4 (diameter 4 cm, 1 tablet 20
g) was dissolved in 200 ml of hot water at 40°C. We investigated the pH, the time it takes for the carbon dioxide concentration in the bath water to reach its maximum, and the presence or absence of undissolved water. In the combination (B) of sodium carbonate and succinic acid, the generation and dissolution of carbon dioxide gas are slow and the sodium carbonate remains dissolved at the bottom. In the combination (C) of sodium bicarbonate and fumaric acid, the generation and dissolution of carbon dioxide gas is slow, and the fumaric acid remains dissolved on the bath water. In the combination (D) of sodium carbonate and fumaric acid, the generation and dissolution of carbon dioxide gas is slow, leaving fumaric acid on the top of the bath water and sodium carbonate dissolved on the bottom.
【表】
実施例 ４
表―５に示す組成の入浴剤を40℃の湯に0.01％
の割合で溶かした溶液中に、一般消費者宅の残り
湯から分離されたH2S生産菌（硫酸還元菌）及び
FeSO4、亜硫酸ソーダを添加した。翌日の湯の臭
い、色の変化について観察した。[Table] Example 4 Add 0.01% of bath additives with the composition shown in Table 5 to hot water at 40°C.
H 2 S-producing bacteria (sulfate-reducing bacteria) isolated from leftover hot water in general consumer homes and
FeSO 4 and sodium sulfite were added. The odor and color change of the hot water the next day were observed.
Claims (1)
ムの0.2〜1.5重量倍のコハク酸及び炭酸水素ナト
リウムの0.4〜３重量倍のコハク酸―ナトリウム
から選ばれる酸、並びに(c)該酸の0.3〜５重量倍
の硫酸塩及び／又は塩酸塩を含有し、浴湯に溶解
したときのPHが５〜７（0.01重量％水溶液）にな
るようにしたことを特徴とする弱酸性入浴剤。1 (a) sodium hydrogen carbonate, (b) an acid selected from succinic acid in an amount of 0.2 to 1.5 times the weight of sodium hydrogen carbonate, and sodium succinate in an amount of 0.4 to 3 times the weight of sodium hydrogen carbonate; A weakly acidic bath additive, characterized in that it contains 0.3 to 5 times the weight of sulfate and/or hydrochloride, and has a pH of 5 to 7 (0.01% by weight aqueous solution) when dissolved in bath water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18025282A JPS5970609A (en) | 1982-10-14 | 1982-10-14 | Weakly acidic bathing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18025282A JPS5970609A (en) | 1982-10-14 | 1982-10-14 | Weakly acidic bathing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5970609A JPS5970609A (en) | 1984-04-21 |
| JPH02324B2 true JPH02324B2 (en) | 1990-01-08 |
Family
ID=16080014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18025282A Granted JPS5970609A (en) | 1982-10-14 | 1982-10-14 | Weakly acidic bathing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5970609A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60215613A (en) * | 1984-04-10 | 1985-10-29 | Kao Corp | Weak-acidity bath preparation |
| JPS60215617A (en) * | 1984-04-12 | 1985-10-29 | Kao Corp | Weak-acidity bath preparation |
| JPS60215621A (en) * | 1984-04-12 | 1985-10-29 | Kao Corp | Weak-acidity bath preparation |
| JPS61277611A (en) * | 1985-06-03 | 1986-12-08 | Kao Corp | Weakly acidic bathing agent |
| JPS6393711A (en) * | 1986-10-09 | 1988-04-25 | Kao Corp | Bathing agent |
| JPH0816050B2 (en) * | 1988-04-01 | 1996-02-21 | 花王株式会社 | Bath additive |
| CN1332643C (en) * | 2002-08-08 | 2007-08-22 | 株式会社津村 | Solid bathing agent composition |
| JP5667756B2 (en) * | 2009-10-29 | 2015-02-12 | 泰行 清水 | Bath oil-containing bath oil |
| JP5883655B2 (en) | 2011-01-12 | 2016-03-15 | 花王株式会社 | Method for producing foaming bath agent composition |
| JP6075553B2 (en) * | 2013-06-25 | 2017-02-08 | 白元アース株式会社 | Foaming bath composition |
-
1982
- 1982-10-14 JP JP18025282A patent/JPS5970609A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5970609A (en) | 1984-04-21 |
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