CA2449803A1 - Soap composition - Google Patents
Soap composition Download PDFInfo
- Publication number
- CA2449803A1 CA2449803A1 CA002449803A CA2449803A CA2449803A1 CA 2449803 A1 CA2449803 A1 CA 2449803A1 CA 002449803 A CA002449803 A CA 002449803A CA 2449803 A CA2449803 A CA 2449803A CA 2449803 A1 CA2449803 A1 CA 2449803A1
- Authority
- CA
- Canada
- Prior art keywords
- soap
- weight
- soap composition
- composition according
- fatty acids
- 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.)
- Abandoned
Links
- 239000000344 soap Substances 0.000 title claims abstract description 141
- 239000000203 mixture Substances 0.000 title claims abstract description 81
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 29
- 239000000194 fatty acid Substances 0.000 claims abstract description 29
- 229930195729 fatty acid Natural products 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 14
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims abstract description 14
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 13
- 229920005862 polyol Polymers 0.000 claims abstract description 13
- 150000003077 polyols Chemical class 0.000 claims abstract description 13
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 9
- 150000004665 fatty acids Chemical class 0.000 claims description 22
- -1 C24 fatty acids Chemical class 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 235000019482 Palm oil Nutrition 0.000 claims description 8
- 239000003346 palm kernel oil Substances 0.000 claims description 8
- 235000019865 palm kernel oil Nutrition 0.000 claims description 8
- 239000002540 palm oil Substances 0.000 claims description 8
- 235000021588 free fatty acids Nutrition 0.000 claims description 7
- 150000005846 sugar alcohols Chemical class 0.000 claims description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- PHZLMBHDXVLRIX-UHFFFAOYSA-M potassium lactate Chemical group [K+].CC(O)C([O-])=O PHZLMBHDXVLRIX-UHFFFAOYSA-M 0.000 claims description 5
- 239000001521 potassium lactate Substances 0.000 claims description 5
- 235000011085 potassium lactate Nutrition 0.000 claims description 5
- 229960001304 potassium lactate Drugs 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 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 9
- 239000003599 detergent Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 5
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002304 perfume Substances 0.000 description 5
- 239000000600 sorbitol Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000013538 functional additive Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical class CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000003974 emollient agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical class CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 235000020778 linoleic acid Nutrition 0.000 description 2
- OYHQOLUKZRVURQ-HZJYTTRNSA-N linoleic acid group Chemical group C(CCCCCCC\C=C/C\C=C/CCCCC)(=O)O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 235000012149 noodles Nutrition 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 229920000223 polyglycerol Polymers 0.000 description 2
- 229920005903 polyol mixture Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical class OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical class OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- QTDIEDOANJISNP-UHFFFAOYSA-N 2-dodecoxyethyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOCCOS(O)(=O)=O QTDIEDOANJISNP-UHFFFAOYSA-N 0.000 description 1
- AFENDNXGAFYKQO-UHFFFAOYSA-N 2-hydroxybutyric acid Chemical class CCC(O)C(O)=O AFENDNXGAFYKQO-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical class COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- HIQIXEFWDLTDED-UHFFFAOYSA-N 4-hydroxy-1-piperidin-4-ylpyrrolidin-2-one Chemical compound O=C1CC(O)CN1C1CCNCC1 HIQIXEFWDLTDED-UHFFFAOYSA-N 0.000 description 1
- HOSGXJWQVBHGLT-UHFFFAOYSA-N 6-hydroxy-3,4-dihydro-1h-quinolin-2-one Chemical group N1C(=O)CCC2=CC(O)=CC=C21 HOSGXJWQVBHGLT-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000283153 Cetacea Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical class OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000004150 EU approved colour Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004909 Moisturizer Substances 0.000 description 1
- 235000014643 Orbignya martiana Nutrition 0.000 description 1
- 244000021150 Orbignya martiana Species 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Chemical class [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical group CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Chemical class OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000010480 babassu oil Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000008294 cold cream Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 150000002190 fatty acyls Chemical group 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 229940013317 fish oils Drugs 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 150000002306 glutamic acid derivatives Chemical class 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229940079865 intestinal antiinfectives imidazole derivative Drugs 0.000 description 1
- 150000003893 lactate salts Chemical class 0.000 description 1
- 239000004310 lactic acid Chemical class 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000001630 malic acid Chemical class 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000001333 moisturizer Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 125000005608 naphthenic acid group Chemical group 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- SFVFIFLLYFPGHH-UHFFFAOYSA-M stearalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SFVFIFLLYFPGHH-UHFFFAOYSA-M 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 239000011975 tartaric acid Chemical class 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 229930003799 tocopherol Natural products 0.000 description 1
- 239000011732 tocopherol Substances 0.000 description 1
- 235000019149 tocopherols Nutrition 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- QUEDXNHFTDJVIY-UHFFFAOYSA-N γ-tocopherol Chemical class OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1 QUEDXNHFTDJVIY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D9/00—Compositions of detergents based essentially on soap
- C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
- C11D9/48—Superfatting agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/006—Detergents in the form of bars or tablets containing mainly surfactants, but no builders, e.g. syndet bar
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0095—Solid transparent soaps or detergents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D9/00—Compositions of detergents based essentially on soap
- C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
- C11D9/22—Organic compounds, e.g. vitamins
- C11D9/26—Organic compounds, e.g. vitamins containing oxygen
Abstract
A soap composition containing: (i) 50 to 90 % by weight of alkali metal soap of C8-C24 fatty acids, (ii) 3 to 25 % by weight of at least one polyol, (iii) 0.1 to 10 % by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25 % by weight of water. The soap composition is particularly suitable for use in forming a translucent or transparent soap bar.
Description
Soap Composition Field of Invention The present invention relates to a soap composition, and in particular to a transparent or translucent soap composition.
Background A wide range of soap compositions, used to make soap bars or tablets, particularly toilet soap tablets for personal washing, are known in the art. There is a continual need to improve the properties of the soap composition or soap tablet, such as ability to lather, hardness, reduction in. mush (softening when left standing in water), feel and moisturisation. It can be difficult to obtain a soap composition having all or most of the aforementioned properties. Soap compositions can be either opaque, translucent or transparent, and it can be particularly difficult to achieve the aforementioned properties whilst maintaining or improving the translucency or transparency of a soap composition.
Prior Art GB-1417183 and GB-1487552 both disclose detergent bars containing a water soluble lactate salt, which together with a water soluble glutamate salt, act as moisturising components.
US-4297230 is directed to a transparent soap bar containing potassium soap and chloride anions.
WO 99/42554 is directed to a soap bar containing 30-60% by weight of alkali metal 3o salt of a defined fatty acid mixture, 3-35% by weight of fatty acid, 2-25%
by weight of structurant and the remainder water.
US-6218348 claims a process of making a soap bar which contains polyalkylene glycol having a molecular weight in the range from 400 to 25,000.
Background A wide range of soap compositions, used to make soap bars or tablets, particularly toilet soap tablets for personal washing, are known in the art. There is a continual need to improve the properties of the soap composition or soap tablet, such as ability to lather, hardness, reduction in. mush (softening when left standing in water), feel and moisturisation. It can be difficult to obtain a soap composition having all or most of the aforementioned properties. Soap compositions can be either opaque, translucent or transparent, and it can be particularly difficult to achieve the aforementioned properties whilst maintaining or improving the translucency or transparency of a soap composition.
Prior Art GB-1417183 and GB-1487552 both disclose detergent bars containing a water soluble lactate salt, which together with a water soluble glutamate salt, act as moisturising components.
US-4297230 is directed to a transparent soap bar containing potassium soap and chloride anions.
WO 99/42554 is directed to a soap bar containing 30-60% by weight of alkali metal 3o salt of a defined fatty acid mixture, 3-35% by weight of fatty acid, 2-25%
by weight of structurant and the remainder water.
US-6218348 claims a process of making a soap bar which contains polyalkylene glycol having a molecular weight in the range from 400 to 25,000.
2 Summary of the Invention We have now surprisingly discovered a soap composition which overcomes or significantly reduces at least one of the aforementioned problems.
Accordingly, the present invention provides a soap composition comprising (i) 50 to 90% by weight of alkali metal soap of C8 C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
The invention also provides a soap tablet or bar comprising (i) 50 to 90% by weight of alkali metal.soap Of Cg-C~4 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
The invention further provides the use of a soap composition comprising (i) 50 to 90% by weight of alkali metal soap Of C$-C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water, to form a transparent and/or translucent soap tablet or bar.
The soap composition according to the present invention may be opaque, translucent or transparent, and is preferably transparent or translucent. By "opaque"
is meant having the property of preventing the transmission of light so that objects placed behind an opaque soap cannot be seen. By "transparent" is meant having the property of transmitting light without appreciable scattering, so that objects placed behind a transparent soap are entirely visible and can easily be discerned.
By "translucent" is meant having the property of allowing light to pass through partially or diffusely so that objects placed behind a translucent soap tablet cannot clearly be distinguished (therefore also called partly transparent or semi-transparent). The amount of light transmitted is, of course, dependent upon the
Accordingly, the present invention provides a soap composition comprising (i) 50 to 90% by weight of alkali metal soap of C8 C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
The invention also provides a soap tablet or bar comprising (i) 50 to 90% by weight of alkali metal.soap Of Cg-C~4 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
The invention further provides the use of a soap composition comprising (i) 50 to 90% by weight of alkali metal soap Of C$-C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water, to form a transparent and/or translucent soap tablet or bar.
The soap composition according to the present invention may be opaque, translucent or transparent, and is preferably transparent or translucent. By "opaque"
is meant having the property of preventing the transmission of light so that objects placed behind an opaque soap cannot be seen. By "transparent" is meant having the property of transmitting light without appreciable scattering, so that objects placed behind a transparent soap are entirely visible and can easily be discerned.
By "translucent" is meant having the property of allowing light to pass through partially or diffusely so that objects placed behind a translucent soap tablet cannot clearly be distinguished (therefore also called partly transparent or semi-transparent). The amount of light transmitted is, of course, dependent upon the
3 thickness of the soap, and in the present context soap of 20 mm thickness was used as standard.
The soap composition preferably comprises in the range from 55 to 85%, more preferably 60 to 80%, particularly 63 to 75%, and especially 65 to 70% by weight of alkali metal soap of C8-C24 fatty acids, based on the total weight of the composition, Fatty acids, suitable for use herein, can be obtained from natural sources such as, for instance, plant or animal esters (eg palm oil, palm kernel oil, coconut ail, babassu oil, soybean oil, castor oil, tallow, whale or fish oils, grease, lard, and mixtures thereof). The fatty acids can also be synthetically prepared (eg, by the oxidation of petroleum, or by the hydrogenation of carbon monoxide by the Fischer-Tropsch process). Resin acids, such as those present in tall oil, may be used.
Naphthenic acids are also suitable.
Alkali metal soaps, such as sodium and potassium soaps, can be made by direct saponification of the fats and oils or by the neutralisation of the free fatty acids which are prepared in a separate manufacturing process. Particularly preferred in the present invention are the sodium soaps, but small amounts, suitably less than 10%, preferably less than 8%, more preferably less than 5%, and particularly less than 1 by weight of non-sodium soaps, such as potassium soaps, magnesium soaps, ammonium soaps and/or alkanolamine soaps, and especially potassium soaps, may also be present. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no potassium soaps. Alkali metal salts of mixtures of fatty acids derived from palm oil and palm kernel oil, eg sodium palm oil soaps and sodium palm kernel oil soaps, are preferred.
The term "palm oil" is used herein in to mean fatty acid mixtures having an approximate by weight carbon chain length distribution of 2.5% C,4, 29% C,6, 23%
C,B, 2% palmitoleic, 41.5% oleic and 3% linoleic acids (the first three fatty acids listed being saturated). Other sources having similar carbon chain length distributions, such as fatty acids derived from various tallows and lard, may also be used instead of or in addition to palm oil fatty acids.
The soap composition preferably comprises in the range from 55 to 85%, more preferably 60 to 80%, particularly 63 to 75%, and especially 65 to 70% by weight of alkali metal soap of C8-C24 fatty acids, based on the total weight of the composition, Fatty acids, suitable for use herein, can be obtained from natural sources such as, for instance, plant or animal esters (eg palm oil, palm kernel oil, coconut ail, babassu oil, soybean oil, castor oil, tallow, whale or fish oils, grease, lard, and mixtures thereof). The fatty acids can also be synthetically prepared (eg, by the oxidation of petroleum, or by the hydrogenation of carbon monoxide by the Fischer-Tropsch process). Resin acids, such as those present in tall oil, may be used.
Naphthenic acids are also suitable.
Alkali metal soaps, such as sodium and potassium soaps, can be made by direct saponification of the fats and oils or by the neutralisation of the free fatty acids which are prepared in a separate manufacturing process. Particularly preferred in the present invention are the sodium soaps, but small amounts, suitably less than 10%, preferably less than 8%, more preferably less than 5%, and particularly less than 1 by weight of non-sodium soaps, such as potassium soaps, magnesium soaps, ammonium soaps and/or alkanolamine soaps, and especially potassium soaps, may also be present. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no potassium soaps. Alkali metal salts of mixtures of fatty acids derived from palm oil and palm kernel oil, eg sodium palm oil soaps and sodium palm kernel oil soaps, are preferred.
The term "palm oil" is used herein in to mean fatty acid mixtures having an approximate by weight carbon chain length distribution of 2.5% C,4, 29% C,6, 23%
C,B, 2% palmitoleic, 41.5% oleic and 3% linoleic acids (the first three fatty acids listed being saturated). Other sources having similar carbon chain length distributions, such as fatty acids derived from various tallows and lard, may also be used instead of or in addition to palm oil fatty acids.
4 The term "palm kernel oil" is used herein to mean fatty acid mixtures having an approximate by weight carbon chain length distribution of: 8% C8, 7%
C,°, 48% C,Z, 17% C,4, 8% C,6, 2% C,B, 7% oleic and 2% linoleic acids (the first six fatty acids listed being saturated). Other sources having similar carbon chain length distributions, such as coconut oil and babassu kernel oil, may also be used instead of or in addition to palm kernel oil fatty acids.
The soap component preferably comprises in the range from (i) 10 to 98%, more preferably 40 to 95%, particularly 60 to 90%, and especially 75 to 85% by weight of soaps having in the range from 16 to 20 carbon atoms (preferably derived from palm oil fatty acids), and (ii) 2 to 90%, more preferably 5 to 60%, particularly 10 to 40%, and especially 15 to 25% by weight of soaps having in the range from 8 to 14 carbon atoms (preferably derived from palm kernel oil fatty acids and/or coconut oil).
The soap composition may also comprise a minor amount of one or more synthetic or non-soap detergents, which may be of the anionic, nonionic, amphoteric or cationic type, or mixtures thereof. Preferably less than 25%, more preferably less than 15%, particularly less than 10%, and especially less than 5% by weight, based on the total weight of the composition is non-soap detergent. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no non-soap detergent.
Suitable non-soap detergents include (i) anionic detergents such as the alkyl aryl sulphonates, such as C,°-C22 alkyl benzene sulphonates; the olefin sulphonate salts;
the C,°-C~° paraffin sulphonate salts; the C$-C2~ fatty acyl sarcosinates; the C8 C22 fatty acyl isethionates and C8 C22 fatty acyl N-methyl taurides; and C8 C22 fatty acid alkanol amides; the C$-CZ° alkyl sulphates and the sulphate esters of the reaction product of 1-20 moles of alkylene oxide with 2 to 5 carbon atoms and a saturated straight-or branched-chain aliphatic monohydric C8-C~° alcohol, such as sodium lauryl ether sulphate, (ii) nonionic detergents such as the reaction products of 1-50 mole of C2-C4 alkylene oxide with C8 Ca° primary or secondary alkanols, with dihydric alcohols, and the like, (iii) amphoteric detergents such as the alkyl-~i-iminodipropionates, and long-chain imidazole derivatives, such as imidazolinium betaines, and (iv) cationic detergents such as quaternary ammonium compounds, such as stearyl dimethyl benzyl ammonium chloride, and the like.
The concentration of polyols or polyhydric alcohols in the soap composition according to the present invention is preferably in the range from 5 to 20%, more preferably 8 to 18%, particularly 10 to 16%, and especially 12 to 14% by weight based on the total weight of the composition.
The molecular weight of the polyol is preferably less than 300, more preferably in the range from 50 to 270, particularly 80 to 220, and especially 90 to 200.
Suitable polyols include sugar alcohols such as sorbitol, mannitol;
(poly)glycols such as (poly)ethylene glycol, (poly)propylene glycol; and other C3 C6 polyols containing from 3 to 6 hydroxyl groups such as trimethylolpropane, trimethylolethane, and glycerine. Sugar alcohols, particularly sorbitol, are preferred. Mixtures of any two or more of the aforementioned materials may also be employed.
In a preferred embodiment, the soap composition according to the present invention preferably comprises a polyol mixture of a sugar alcohol, particularly sorbitol, and glycerine. The concentration of sugar alcohol in the soap composition according to 2o the present invention is preferably in the range from 1 to 10%, more preferably 3 to 8%, particularly 4 to 7%, and especially 5 to 6% by weight based on the total weight of the composition. The concentration of glycerine in the soap composition is preferably in the range from 1 to 15%, more preferably 3 to 12%, particularly
C,°, 48% C,Z, 17% C,4, 8% C,6, 2% C,B, 7% oleic and 2% linoleic acids (the first six fatty acids listed being saturated). Other sources having similar carbon chain length distributions, such as coconut oil and babassu kernel oil, may also be used instead of or in addition to palm kernel oil fatty acids.
The soap component preferably comprises in the range from (i) 10 to 98%, more preferably 40 to 95%, particularly 60 to 90%, and especially 75 to 85% by weight of soaps having in the range from 16 to 20 carbon atoms (preferably derived from palm oil fatty acids), and (ii) 2 to 90%, more preferably 5 to 60%, particularly 10 to 40%, and especially 15 to 25% by weight of soaps having in the range from 8 to 14 carbon atoms (preferably derived from palm kernel oil fatty acids and/or coconut oil).
The soap composition may also comprise a minor amount of one or more synthetic or non-soap detergents, which may be of the anionic, nonionic, amphoteric or cationic type, or mixtures thereof. Preferably less than 25%, more preferably less than 15%, particularly less than 10%, and especially less than 5% by weight, based on the total weight of the composition is non-soap detergent. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no non-soap detergent.
Suitable non-soap detergents include (i) anionic detergents such as the alkyl aryl sulphonates, such as C,°-C22 alkyl benzene sulphonates; the olefin sulphonate salts;
the C,°-C~° paraffin sulphonate salts; the C$-C2~ fatty acyl sarcosinates; the C8 C22 fatty acyl isethionates and C8 C22 fatty acyl N-methyl taurides; and C8 C22 fatty acid alkanol amides; the C$-CZ° alkyl sulphates and the sulphate esters of the reaction product of 1-20 moles of alkylene oxide with 2 to 5 carbon atoms and a saturated straight-or branched-chain aliphatic monohydric C8-C~° alcohol, such as sodium lauryl ether sulphate, (ii) nonionic detergents such as the reaction products of 1-50 mole of C2-C4 alkylene oxide with C8 Ca° primary or secondary alkanols, with dihydric alcohols, and the like, (iii) amphoteric detergents such as the alkyl-~i-iminodipropionates, and long-chain imidazole derivatives, such as imidazolinium betaines, and (iv) cationic detergents such as quaternary ammonium compounds, such as stearyl dimethyl benzyl ammonium chloride, and the like.
The concentration of polyols or polyhydric alcohols in the soap composition according to the present invention is preferably in the range from 5 to 20%, more preferably 8 to 18%, particularly 10 to 16%, and especially 12 to 14% by weight based on the total weight of the composition.
The molecular weight of the polyol is preferably less than 300, more preferably in the range from 50 to 270, particularly 80 to 220, and especially 90 to 200.
Suitable polyols include sugar alcohols such as sorbitol, mannitol;
(poly)glycols such as (poly)ethylene glycol, (poly)propylene glycol; and other C3 C6 polyols containing from 3 to 6 hydroxyl groups such as trimethylolpropane, trimethylolethane, and glycerine. Sugar alcohols, particularly sorbitol, are preferred. Mixtures of any two or more of the aforementioned materials may also be employed.
In a preferred embodiment, the soap composition according to the present invention preferably comprises a polyol mixture of a sugar alcohol, particularly sorbitol, and glycerine. The concentration of sugar alcohol in the soap composition according to 2o the present invention is preferably in the range from 1 to 10%, more preferably 3 to 8%, particularly 4 to 7%, and especially 5 to 6% by weight based on the total weight of the composition. The concentration of glycerine in the soap composition is preferably in the range from 1 to 15%, more preferably 3 to 12%, particularly
5 to 10%, and especially 6 to 8% by weight based on the total weight of the composition.
The specific combination of sugar alcohol, particularly sorbitol, and glycerine polyol mixture reduces the formation of large opaque white crystals during a normal soap neutralisation process, enabling a transparent or translucent product to be processed on a standard soap finishing line.
The potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having
The specific combination of sugar alcohol, particularly sorbitol, and glycerine polyol mixture reduces the formation of large opaque white crystals during a normal soap neutralisation process, enabling a transparent or translucent product to be processed on a standard soap finishing line.
The potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having
6 or less carbon atoms, preferably comprises in the range from 1 to 5, more preferably 2 to 4, and especially 3 carbon atoms. The potassium salt is preferably the salt of a hydroxy carboxylic acid, and preferably comprises 1 or 2, and more preferably carboxyl group(s). The potassium salt also preferably comprises 1 or 2, and more preferably 1 hydroxyl group(s). Suitable materials include the potassium salts of formic acid, lactic acid, acetic acid, citric acid, tartaric acid, malic acid, and alpha hydroxybutyric acid. In a particularly preferred embodiment of the invention, potassium lactate is employed.
The concentration of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, preferably potassium lactate, in the soap composition according to the present invention is preferably in the range from 0.3 to 8%, more preferably 0.6 to 6%, particularly 1 to 4%, and especially 1.5 to 2%
1 o by weight based on the total weight of the composition. The presence of the aforementioned potassium salt can improve one or more of the translucency, hardness, lathering, mushing, feel and moisturizing properties of the soap composition and finished soap bar or tablet.
The concentration of water in the soap composition according to the present invention is preferably in the range from 10 to 22%, more preferably 12 to 20%, particularly 14 to 19%, and especially 16 to 1 ~% by weight based on the total weight of the composition.
2o The soap composition according to the present invention may optionally contain free fatty acids, in addition to the neutralized fatty acids of the actual soap component.
Preferred free fatty acids are the same types of fatty acids, as defined above, which are used to form the soap component, and therefore generally contain from 8 to carbon atoms. The soap composition preferably comprises in the range from 0.5 to 10%, more preferably 1 to 5%, particularly 1.5 to 3%, and especially 2 to 2.5%
by weight based on the total weight of the composition, of free fatty acids. The presence of the free fatty acids can improve both the mildness and refitting properties of the soap composition on the skin.
The soap composition suitably comprises less than 0.5%, preferably less than 0.25%, more preferably less than 0.2%, particularly less than 0.15%, and especially less than 0.1% by weight based on the total weight of the composition, of sodium chloride. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no sodium chloride. The presence of sodium
The concentration of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, preferably potassium lactate, in the soap composition according to the present invention is preferably in the range from 0.3 to 8%, more preferably 0.6 to 6%, particularly 1 to 4%, and especially 1.5 to 2%
1 o by weight based on the total weight of the composition. The presence of the aforementioned potassium salt can improve one or more of the translucency, hardness, lathering, mushing, feel and moisturizing properties of the soap composition and finished soap bar or tablet.
The concentration of water in the soap composition according to the present invention is preferably in the range from 10 to 22%, more preferably 12 to 20%, particularly 14 to 19%, and especially 16 to 1 ~% by weight based on the total weight of the composition.
2o The soap composition according to the present invention may optionally contain free fatty acids, in addition to the neutralized fatty acids of the actual soap component.
Preferred free fatty acids are the same types of fatty acids, as defined above, which are used to form the soap component, and therefore generally contain from 8 to carbon atoms. The soap composition preferably comprises in the range from 0.5 to 10%, more preferably 1 to 5%, particularly 1.5 to 3%, and especially 2 to 2.5%
by weight based on the total weight of the composition, of free fatty acids. The presence of the free fatty acids can improve both the mildness and refitting properties of the soap composition on the skin.
The soap composition suitably comprises less than 0.5%, preferably less than 0.25%, more preferably less than 0.2%, particularly less than 0.15%, and especially less than 0.1% by weight based on the total weight of the composition, of sodium chloride. In a particularly preferred embodiment of the invention, the soap composition comprises substantially no sodium chloride. The presence of sodium
7 chloride at such low concentrations, or the complete absence thereof, in a soap composition according to the present invention, can result in improved foaming properties, and faster translucency development in the soap finishing process.
The soap composition may also contain effective amounts of other materials or functional additives. Suitable functional additives include perfumes, antioxidants, such as tocopherols BHA, BHT and the like; chelating agents, such as EDTA and the like; emulsifiers such as polyglycerol esters, eg polyglycerol monostearate;
colouring agents; deodorants; dyes; emollients and skin conditioners, such as dimerized fatty acids, lanolin, cold cream, mineral oil, sorbitan esters, isopropyl myristate; enzymes; foam stabilizers; germicides; lathering agents;
moisturizers;
optical brighteners; dyes; pearlescers; sequestering agents; stabilizers;
superfatting agents; UV absorbers; and mixtures of any two or more of these materials.
The functional additives may be used in any desired quantity to effect the desired functional characteristics, and usually minor amounts in the range from 0.01 to 5%
by weight based on the total weight of the composition are used. For example, if present, (i) anti-bacterial agents and sanitizers generally comprise in the range from 0.5 to 4% by weight, (ii) emollients and skin conditioning agents generally comprise in the range from 0.5 to about 5% by weight, and (iii) perfumes, dyes and coloring agents comprise in the range from 0.2 to about 5% by weight, all based on the total weight of the composition.
In a preferred embodiment, the soap composition according to the present invention is translucent, preferably having a translucency value, measured as described herein, of greater than 15%, more preferably in the range from 20 to 80%, particularly 30 to 70%, and especially 40 to 60%.
fn addition, the soap composition preferably has a total mush value, measured as described herein, of less than 30, more preferably in the range from 5 to 25, particularly 10 to 20, and especially 15 to 20 g/50 cm2.
The soap composition may also contain effective amounts of other materials or functional additives. Suitable functional additives include perfumes, antioxidants, such as tocopherols BHA, BHT and the like; chelating agents, such as EDTA and the like; emulsifiers such as polyglycerol esters, eg polyglycerol monostearate;
colouring agents; deodorants; dyes; emollients and skin conditioners, such as dimerized fatty acids, lanolin, cold cream, mineral oil, sorbitan esters, isopropyl myristate; enzymes; foam stabilizers; germicides; lathering agents;
moisturizers;
optical brighteners; dyes; pearlescers; sequestering agents; stabilizers;
superfatting agents; UV absorbers; and mixtures of any two or more of these materials.
The functional additives may be used in any desired quantity to effect the desired functional characteristics, and usually minor amounts in the range from 0.01 to 5%
by weight based on the total weight of the composition are used. For example, if present, (i) anti-bacterial agents and sanitizers generally comprise in the range from 0.5 to 4% by weight, (ii) emollients and skin conditioning agents generally comprise in the range from 0.5 to about 5% by weight, and (iii) perfumes, dyes and coloring agents comprise in the range from 0.2 to about 5% by weight, all based on the total weight of the composition.
In a preferred embodiment, the soap composition according to the present invention is translucent, preferably having a translucency value, measured as described herein, of greater than 15%, more preferably in the range from 20 to 80%, particularly 30 to 70%, and especially 40 to 60%.
fn addition, the soap composition preferably has a total mush value, measured as described herein, of less than 30, more preferably in the range from 5 to 25, particularly 10 to 20, and especially 15 to 20 g/50 cm2.
8 The soap composition preferably has,.a lather volume, measured as described herein, of greater than 30, more preferably in the range from 40 to 150, particularly 50 to 120, and especially 60 to 100 ml.
The soap composition according to the present invention may be converted into flakes, noodles, pellets, or any other suitable form or shape by methods known in the art. The converted soap composition, preferably in the form of noodles, can be mixed with other components, such as perfumes, colorants and other functional additives in an amalgamator for at least 5 minutes. The resultant mixture may be plodded or extruded into an endless bar that, after cutting into billets, can be stamped into a final soap tablet.
The invention is illustrated by the following non-limiting examples.
The following test procedures were employed;
(i) Translucency Translucency was evaluated by measuring the light transmission of a slice of soap having a thickness of 20 mm using a reflectometer according to Dr B Lange, Type LMG 008. The result is expressed as a percentage of the light transmission of a matted glass standard. The transmission of the glass standard compared to air was 8.3% and the transmission of this standard was taken as 100%.
Translucency: >40% = excellent 20 to 40% = good <20% = moderate ii Mush Mush was determined by immersing a well defined portion of a soap tablet (approximate weight = 45 g, and approximate surface area = 70 cm2) in demineralised water at 20°C for 2 hours. Before immersion, the weight of the soap block was measured (= W,). After removal from the water, excess water was 3o allowed to drip from the soap block for 1 minute, and the weight of the soap block was measured again (= W~). All of the mush was scraped off the soap block with a plastic spatula and the soap block again reweighed (= W3). The amount of mush is expressed in 3 different parameters, which were calculated according to the following equations (based on an immersed surface area of 50 cm2);
The soap composition according to the present invention may be converted into flakes, noodles, pellets, or any other suitable form or shape by methods known in the art. The converted soap composition, preferably in the form of noodles, can be mixed with other components, such as perfumes, colorants and other functional additives in an amalgamator for at least 5 minutes. The resultant mixture may be plodded or extruded into an endless bar that, after cutting into billets, can be stamped into a final soap tablet.
The invention is illustrated by the following non-limiting examples.
The following test procedures were employed;
(i) Translucency Translucency was evaluated by measuring the light transmission of a slice of soap having a thickness of 20 mm using a reflectometer according to Dr B Lange, Type LMG 008. The result is expressed as a percentage of the light transmission of a matted glass standard. The transmission of the glass standard compared to air was 8.3% and the transmission of this standard was taken as 100%.
Translucency: >40% = excellent 20 to 40% = good <20% = moderate ii Mush Mush was determined by immersing a well defined portion of a soap tablet (approximate weight = 45 g, and approximate surface area = 70 cm2) in demineralised water at 20°C for 2 hours. Before immersion, the weight of the soap block was measured (= W,). After removal from the water, excess water was 3o allowed to drip from the soap block for 1 minute, and the weight of the soap block was measured again (= W~). All of the mush was scraped off the soap block with a plastic spatula and the soap block again reweighed (= W3). The amount of mush is expressed in 3 different parameters, which were calculated according to the following equations (based on an immersed surface area of 50 cm2);
9 Total mush - (WZ-W3)x50/immersed area Water uptake = (W,-WZ)x50/immersed area Mushed soap = (W,-W3)x50/immersed area Total mush is a measure of the resistance against slime formation when the soap bar is in contact with water. Water uptake and mushed soap quantity is an indication of measure of the structure of the mush.
Total mush: <15 g/50 cm~ = excellent 15-25 g/50 cm2 = good >25 g/50 cm2 = moderate iii Lather Lather volume was measured by using a handwash method which closely approximates normal consumer habits. The test was carried out using a pair of surgeon's disposable latex gloves which were rinsed to remove talc. The soap tablets (approximate weight of tablets = 85 g, dimensions 8 cm x 5.5 cm x 2.5 cm (cushion model)) to be tested were washed for 10 minutes before the test by twisting the tablet 20 times through 180° under running water at approximately 14°C. The soap tablet was then immersed in water at a temperature of 20°C, twisted 15 times through 180°, and placed back in the soap dish. Lather was than generated by rubbing the tips of the fingers of one hand against the palm of the other hand
Total mush: <15 g/50 cm~ = excellent 15-25 g/50 cm2 = good >25 g/50 cm2 = moderate iii Lather Lather volume was measured by using a handwash method which closely approximates normal consumer habits. The test was carried out using a pair of surgeon's disposable latex gloves which were rinsed to remove talc. The soap tablets (approximate weight of tablets = 85 g, dimensions 8 cm x 5.5 cm x 2.5 cm (cushion model)) to be tested were washed for 10 minutes before the test by twisting the tablet 20 times through 180° under running water at approximately 14°C. The soap tablet was then immersed in water at a temperature of 20°C, twisted 15 times through 180°, and placed back in the soap dish. Lather was than generated by rubbing the tips of the fingers of one hand against the palm of the other hand
10 times. As much lather as possible was removed from the hands by alternately gripping one hand with the other and forcing lather towards the fingertips.
Accumulated lather was dislodged into a 150 ml beaker calibrated at 10 ml intervals.
The whole procedure was repeated twice and the total volume of lather recorded as lather volume. Before measuring the lather volume, the lather was gently stirred to release large air pockets. The test was done in triplicate using 3 different soap tablets made from the same composition. Lather volume was calculated as an average value of the three results.
Lather volume: >100 ml = excellent 50-100 ml = good <50 ml = moderate (iv) Rate of wear The soap tablets used in the lather volume test were weighed both before and after the test. Weighing after the test was done after the soap had dried at ambient temperature (approximately 23°C) for at least for 24 hours. The weight difference was recorded as rate of wear and expressed in grams.
Rate of Wear: <3 g = excellent 3-5 g = good 5 >5 g = moderate (v) Hardness A "cheese wire" with an attached weight was cut into the corner of a soap tablet, until an equilibrium position was reached. The area over which the force acts increases as the depth of the cut increases, and therefore the stress being exerted 10 decreases until it is exactly balanced by the resistance of the soap and the wire stops moving. The stress at that point is equal to the yield stress of the soap. The time taken to reach this point was 60 seconds. After this time the weight was removed and the length of the cut measured. The yield stress was calculated from the semi-empirical formula:
Yield stress = 3/8(Wx98.1 )/LxD N/mz where L and D are the length of the cut and diameter of the wire in cm. W is the weight applied on the wire to obtain the cut and is given in grams.
Hardness: >7x105 Nlm2 = hard >4<7x105 N/m2 = moderate < 4x105 N/m2 = soft Hardness is strongly dependent upon temperature and moisture content, and therefore measurements need to be performed under strictly controlled conditions of temperature and moisture.
Example 1 A soap formulation was prepared containing 53.5% by weight of sodium soap of palm oil fatty acids, 13.5% by weight of sodium soap of palm kernel oil fatty acids, 2% by weight of free fatty acids, 7.5% by weight of glycerin, 5% by weight of sorbitol, 1.5% by weight of potassium lactate, and 17% by weight of water.
The soap composition was passed 6 times through a laboratory Mazzoni M-100 duplex refiner/plodder with refining sieves of 0.5 mm and provided with a rectangular extrusion die of 45 mm x 19 mm at the end of the conical outlet. The cylinder temperature was set at 30°C and the cone temperature was 57°C.
The speed of the
Accumulated lather was dislodged into a 150 ml beaker calibrated at 10 ml intervals.
The whole procedure was repeated twice and the total volume of lather recorded as lather volume. Before measuring the lather volume, the lather was gently stirred to release large air pockets. The test was done in triplicate using 3 different soap tablets made from the same composition. Lather volume was calculated as an average value of the three results.
Lather volume: >100 ml = excellent 50-100 ml = good <50 ml = moderate (iv) Rate of wear The soap tablets used in the lather volume test were weighed both before and after the test. Weighing after the test was done after the soap had dried at ambient temperature (approximately 23°C) for at least for 24 hours. The weight difference was recorded as rate of wear and expressed in grams.
Rate of Wear: <3 g = excellent 3-5 g = good 5 >5 g = moderate (v) Hardness A "cheese wire" with an attached weight was cut into the corner of a soap tablet, until an equilibrium position was reached. The area over which the force acts increases as the depth of the cut increases, and therefore the stress being exerted 10 decreases until it is exactly balanced by the resistance of the soap and the wire stops moving. The stress at that point is equal to the yield stress of the soap. The time taken to reach this point was 60 seconds. After this time the weight was removed and the length of the cut measured. The yield stress was calculated from the semi-empirical formula:
Yield stress = 3/8(Wx98.1 )/LxD N/mz where L and D are the length of the cut and diameter of the wire in cm. W is the weight applied on the wire to obtain the cut and is given in grams.
Hardness: >7x105 Nlm2 = hard >4<7x105 N/m2 = moderate < 4x105 N/m2 = soft Hardness is strongly dependent upon temperature and moisture content, and therefore measurements need to be performed under strictly controlled conditions of temperature and moisture.
Example 1 A soap formulation was prepared containing 53.5% by weight of sodium soap of palm oil fatty acids, 13.5% by weight of sodium soap of palm kernel oil fatty acids, 2% by weight of free fatty acids, 7.5% by weight of glycerin, 5% by weight of sorbitol, 1.5% by weight of potassium lactate, and 17% by weight of water.
The soap composition was passed 6 times through a laboratory Mazzoni M-100 duplex refiner/plodder with refining sieves of 0.5 mm and provided with a rectangular extrusion die of 45 mm x 19 mm at the end of the conical outlet. The cylinder temperature was set at 30°C and the cone temperature was 57°C.
The speed of the
11 plodder screw was fixed at 13 rpm. Soap tablets were made from the soap composition produced after each passage through the plodder. The translucency of each cycle soap tablet was measured from the corresponding billets and the results are given in Table 1.
The soap tablet made from the soap composition produced after 6 passages through the plodder, was subjected to the test procedures described herein and the results are given in Table 2.
1 o Example 2 This is a comparative example not according to the present invention. The procedure of Example 1 was repeated except that the soap formulation contained no potassium lactate. The results are given in Tables 1 and 2.
Table 1 Translucency of Soap Tablet (%) Cycle Example 1 Example 2 (Comp.) 1 4.4 4.0 2 6.6 4.4 3 12.9 6.9 4 27.2 13.4 5 42.2 29.5 6 54.1 52.1 Table 2 Properties Example 1 Example 2 (Comp (i) Translucency (%) 54.1 52.1 (ii) Mush Total mush (g/50 cm~) 21.9 29.2 3o Water uptake (g/50 18.8 24.7 cm~) Mushed soap (g/50 cm2) 3.1 4.6 (iii) Lather (ml) 58 48 (iv) Rate of wear (g) 5.3 7.7 (v) Hardness (x105 N/m2)6.6 4.7
The soap tablet made from the soap composition produced after 6 passages through the plodder, was subjected to the test procedures described herein and the results are given in Table 2.
1 o Example 2 This is a comparative example not according to the present invention. The procedure of Example 1 was repeated except that the soap formulation contained no potassium lactate. The results are given in Tables 1 and 2.
Table 1 Translucency of Soap Tablet (%) Cycle Example 1 Example 2 (Comp.) 1 4.4 4.0 2 6.6 4.4 3 12.9 6.9 4 27.2 13.4 5 42.2 29.5 6 54.1 52.1 Table 2 Properties Example 1 Example 2 (Comp (i) Translucency (%) 54.1 52.1 (ii) Mush Total mush (g/50 cm~) 21.9 29.2 3o Water uptake (g/50 18.8 24.7 cm~) Mushed soap (g/50 cm2) 3.1 4.6 (iii) Lather (ml) 58 48 (iv) Rate of wear (g) 5.3 7.7 (v) Hardness (x105 N/m2)6.6 4.7
12 Example 3 The procedure of Example 1 was repeated except that 1.5% by weight based on the total weight of the composition of perfume oil (Green Apple (ex Fragrance Oils Ltd)) was added to the soap composition. The results are given in Tables 3 and 4.
Example 4 This is a comparative example not according to the present invention. The procedure of Example 2 was repeated except that 1.5% by weight based on the total weight of the composition of perfume oil (Green Apple (ex Fragrance Oils)) was added to the soap composition. The results are given in Tables 3 and 4.
T..L.1... n Translucency of Tablet (%) Soap Cycle Example 3 Example 4 (Comp.) 1 6.6 2.0 2 8.3 4.5 3 17.8 9.0 4 35.2 17.0 5 41.4 34.5 6 50.9 43.7 Table 4 Properties Example 3 Example 4 (Comp.) (i) Translucency (%) 50.9 43.7 (ii) Mush Total mush (g150 cm2) 17.1 20.0 Water uptake (g/50 cm~)12.2 14.9 Mushed soap (g/50 cm~) 4.9 5.1 (iii) Lather (ml) 87 40 (iv) Rate of wear 5.3 4.6 (g) (v) Hardness (x105 N/m2)5.7 4.4 The above examples illustrate the improved properties of a soap composition according to the present invention.
Example 4 This is a comparative example not according to the present invention. The procedure of Example 2 was repeated except that 1.5% by weight based on the total weight of the composition of perfume oil (Green Apple (ex Fragrance Oils)) was added to the soap composition. The results are given in Tables 3 and 4.
T..L.1... n Translucency of Tablet (%) Soap Cycle Example 3 Example 4 (Comp.) 1 6.6 2.0 2 8.3 4.5 3 17.8 9.0 4 35.2 17.0 5 41.4 34.5 6 50.9 43.7 Table 4 Properties Example 3 Example 4 (Comp.) (i) Translucency (%) 50.9 43.7 (ii) Mush Total mush (g150 cm2) 17.1 20.0 Water uptake (g/50 cm~)12.2 14.9 Mushed soap (g/50 cm~) 4.9 5.1 (iii) Lather (ml) 87 40 (iv) Rate of wear 5.3 4.6 (g) (v) Hardness (x105 N/m2)5.7 4.4 The above examples illustrate the improved properties of a soap composition according to the present invention.
Claims (14)
1. A soap composition comprising (i) 50 to 90% by weight of alkali metal soap of C8C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
2. A soap composition according to claim 1 wherein the potassium salt is present at a concentration of 1 to 4% by weight.
3. A soap composition according to either one of claims 1 and 2 wherein the potassium salt is potassium lactate.
4. A soap composition according to any one of the preceding claims wherein the fatty acids of the alkali metal soap are derived from palm oil and palm kernel oil.
5. A soap composition according to any one of the preceding claims wherein the alkali metal soap comprises less than 1 % by weight of potassium soap.
6. A soap composition according to any one of the preceding claims wherein the molecular weight of the polyol is less than 300.
7. A soap composition according to any one of the preceding claims wherein the polyol comprises a sugar alcohol and glycerine.
8. A soap composition according to any one of the preceding claims wherein the sodium chloride content is less than 0.15% by weight.
9. A soap composition according to any one of the preceding claims additionally comprising 0.5 to 10% by weight of free fatty acids.
10. A soap composition according to any one of the preceding claims having a translucency value of greater than 15%.
11. A soap composition according to any one of the preceding claims having a total mush value of less than 30 g/50 cm2.
12. A soap composition according to any one of the preceding claims having a lather volume of greater than 30 ml.
13. A soap tablet or bar comprising (i) 50 to 90% by weight of alkali metal soap of C8 C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water.
14. The use of a soap composition comprising (i) 50 to 90% by weight of alkali metal soap of C8-C24 fatty acids, (ii) 3 to 25% by weight of at least one polyol, (iii) 0.1 to 10% by weight of the potassium salt of a carboxylic acid and/or hydroxy carboxylic acid having 6 or less carbon atoms, and (iv) 5 to 25% by weight of water, to form a transparent and/or translucent soap tablet or bar.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0115942A GB0115942D0 (en) | 2001-06-29 | 2001-06-29 | Soap composition |
GB0115942.5 | 2001-06-29 | ||
PCT/GB2002/002712 WO2003002706A1 (en) | 2001-06-29 | 2002-06-17 | Soap composition |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2449803A1 true CA2449803A1 (en) | 2003-01-09 |
Family
ID=9917619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002449803A Abandoned CA2449803A1 (en) | 2001-06-29 | 2002-06-17 | Soap composition |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1399534A1 (en) |
CA (1) | CA2449803A1 (en) |
GB (1) | GB0115942D0 (en) |
WO (1) | WO2003002706A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007005617A1 (en) * | 2007-01-31 | 2008-08-07 | Buck-Chemie Gmbh | Transparent toilet cleaner |
BR112021014238A2 (en) | 2019-03-01 | 2021-09-28 | Unilever Ip Holdings B.V. | COMPOSITION IN SOAP BAR AND USES OF A COMPOSITION |
KR102245320B1 (en) * | 2019-07-25 | 2021-04-28 | 송경호 | Transparent soap having 3-dimensional message displaying function and method for producing the same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4046717A (en) * | 1972-01-28 | 1977-09-06 | Lever Brothers Company | Detergent bars |
BE794378A (en) * | 1972-01-28 | 1973-07-23 | Unilever Nv | DETERGENT BREADS |
US4297230A (en) * | 1979-02-06 | 1981-10-27 | The Procter & Gamble Company | Non-crystallizing transparent soap bars |
US4468338A (en) * | 1983-06-13 | 1984-08-28 | Purex Corporation | Transparent soap composition |
JPS60177100A (en) * | 1984-02-21 | 1985-09-11 | ライオン株式会社 | Liquid transparent soap composition |
GB9016526D0 (en) * | 1990-07-27 | 1990-09-12 | Unilever Plc | Soap composition |
US6342470B1 (en) * | 2000-04-26 | 2002-01-29 | Unilever Home & Personal Care Usa | Bar comprising soap, fatty acid, polyalkylene glycol and protic acid salts in critical ratios and providing enhanced skin care benefits |
-
2001
- 2001-06-29 GB GB0115942A patent/GB0115942D0/en not_active Ceased
-
2002
- 2002-06-17 CA CA002449803A patent/CA2449803A1/en not_active Abandoned
- 2002-06-17 EP EP02748977A patent/EP1399534A1/en not_active Withdrawn
- 2002-06-17 WO PCT/GB2002/002712 patent/WO2003002706A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
GB0115942D0 (en) | 2001-08-22 |
EP1399534A1 (en) | 2004-03-24 |
WO2003002706A1 (en) | 2003-01-09 |
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Legal Events
Date | Code | Title | Description |
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FZDE | Discontinued |