EP4352195A1 - A tablet composition - Google Patents
A tablet compositionInfo
- Publication number
- EP4352195A1 EP4352195A1 EP22731589.2A EP22731589A EP4352195A1 EP 4352195 A1 EP4352195 A1 EP 4352195A1 EP 22731589 A EP22731589 A EP 22731589A EP 4352195 A1 EP4352195 A1 EP 4352195A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit dose
- tablet
- water
- hydrogel
- weight
- 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.)
- Pending
Links
- 239000007916 tablet composition Substances 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000017 hydrogel Substances 0.000 claims abstract description 44
- 239000003599 detergent Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000004094 surface-active agent Substances 0.000 claims abstract description 25
- 230000008961 swelling Effects 0.000 claims abstract description 24
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- -1 alkyl sulphate Chemical compound 0.000 claims description 30
- 235000002639 sodium chloride Nutrition 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 15
- 239000003945 anionic surfactant Substances 0.000 claims description 14
- 238000004851 dishwashing Methods 0.000 claims description 10
- 150000007524 organic acids Chemical class 0.000 claims description 9
- 239000002736 nonionic surfactant Substances 0.000 claims description 7
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 150000007522 mineralic acids Chemical class 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920006037 cross link polymer Polymers 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 239000001120 potassium sulphate Substances 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract description 11
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 21
- 239000006260 foam Substances 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 10
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 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 5
- 229910052783 alkali metal Inorganic materials 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 239000007884 disintegrant Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000002280 amphoteric surfactant Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229960003237 betaine Drugs 0.000 description 3
- 239000003093 cationic surfactant Substances 0.000 description 3
- 235000015165 citric acid Nutrition 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 150000004677 hydrates Chemical class 0.000 description 3
- 238000004900 laundering Methods 0.000 description 3
- 229940043348 myristyl alcohol Drugs 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- AOMUHOFOVNGZAN-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)dodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CCO)CCO AOMUHOFOVNGZAN-UHFFFAOYSA-N 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 150000001449 anionic compounds Chemical group 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 2
- 229940098691 coco monoethanolamide Drugs 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 229910001412 inorganic anion Inorganic materials 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- ORUDEUCNYHCHPB-OUUBHVDSSA-N (2r,3s,4s,5r,6r)-2-(hydroxymethyl)-6-tetradecoxyoxane-3,4,5-triol Chemical compound CCCCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O ORUDEUCNYHCHPB-OUUBHVDSSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 1
- FEUFEGJTJIHPOF-UHFFFAOYSA-N 2-butyl acrylic acid Chemical compound CCCCC(=C)C(O)=O FEUFEGJTJIHPOF-UHFFFAOYSA-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
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 description 1
- HEBDGRTWECSNNT-UHFFFAOYSA-N 2-methylidenepentanoic acid Chemical compound CCCC(=C)C(O)=O HEBDGRTWECSNNT-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- JDRSMPFHFNXQRB-CMTNHCDUSA-N Decyl beta-D-threo-hexopyranoside Chemical compound CCCCCCCCCCO[C@@H]1O[C@H](CO)C(O)[C@H](O)C1O JDRSMPFHFNXQRB-CMTNHCDUSA-N 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
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-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
- 230000009471 action Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229960000686 benzalkonium chloride Drugs 0.000 description 1
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-M bisulphate group Chemical group S([O-])(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229940073499 decyl glucoside Drugs 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- PYIDGJJWBIBVIA-UYTYNIKBSA-N lauryl glucoside Chemical compound CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O PYIDGJJWBIBVIA-UYTYNIKBSA-N 0.000 description 1
- 229940048848 lauryl glucoside Drugs 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003138 primary alcohols Chemical class 0.000 description 1
- 238000009516 primary packaging Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009463 water soluble packaging Methods 0.000 description 1
- 239000004711 α-olefin Substances 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
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
-
- 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
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0091—Dishwashing tablets
-
- 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
- C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
- C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
- C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
- C11D17/044—Solid compositions
-
- 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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- 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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/10—Carbonates ; Bicarbonates
-
- 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
- C11D3/37—Polymers
-
- 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
- C11D3/37—Polymers
- C11D3/3788—Graft polymers
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to a detergent tablet, in particular, it relates to a detergent tablet for providing a liquid detergent composition on dissolution in water. It discloses a unit dose tablet comprising a surfactant, 0.1 to 10 % by weight hydrogel and a water-soluble inorganic salt, wherein the hydrogel has a swelling ratio of at least 50, wherein swelling ratio is defined by the formula: SR (Swelling ratio) = (WS-WD)/WD, where Ws is the weight of the hydrogel after swelling, and WD is the weight of the dried hydrogel, a surfactant and a hydrogel. It further discloses a process for forming a liquid detergent composition comprising the steps of providing water in a container, adding said tablet into the water, wherein the ratio of tablet to water is in the range from 1 :5 to 1:100 by weight.
Description
A TABLET COMPOSITION
Field of the Invention
The present invention relates to a detergent tablet. In particular it relates to a detergent tablet for providing a liquid detergent composition on dissolution in water.
Background and Prior Art
Consumers spend considerable amount of time and effort in cleaning their households. They prefer to use different cleaning compositions depending on the substrates to be cleaned. Typically, such compositions differ in terms of their ingredients such as, detersive agents, builders, perfume, soil release polymers etc. Moreover, a particular composition is available in different formats such as, powder, liquid, tablet, pod etc.
Typically, a composition in tablet format contains concentrated detergent. Consumers dissolves the tablet in water to form a liquid detergent composition and use it. Tablets are compact in size. Hence requires less packaging material compared to a liquid or powder detergent having similar level of detersive agent. Often the packaging materials includes polyethylene, polyethylene terephthalate etc. which are predominantly sourced from non-renewable resources. There are continuous efforts to reduce such consumptions, and tablet format perfectly fits in to this. Moreover, when a tablet is formulated as a unit dose, it provides relief to consumer from adjudging and dosing right amount of composition in water. Hence tablet format is gaining popularity in this space.
In present context, a tablet contains a unit dose of concentrated detergent, which forms a liquid detergent composition on dissolution in water. For such tablets, it is desirable that the tablets should be hard enough to resist breakage in transportation/storage and at same time it should dissolve fast in contact with water. A tablet is formed by compacting a homogenised powder comprising the required ingredients. In one hand, a high compression force leads to hard tablets which fails to dissolve fast. On the other hand, lower compression force leads to loosely packed ingredients which helps in faster dissolution, however, does not have the required strength. It is desirable to have a fast-dissolving tablet with sufficient strength.
One way to improve the performance of tablets is to incorporate a disintegrant in the composition which disintegrates the tablet in water, helping in faster dissolution. However, most
of the disintegrants are insoluble in water leaving residue upon dissolution in the liquid composition, which is not preferred by consumers.
EP 1 642 960 (Unilever N.V, 2006) describes a detergent composition in the form of a tablet, which includes a semi-solid region and a solid tablet body, characterised in that a barrier layer formed from a hydrated polymeric material is interposed between the semi-solid region and the solid tablet body. The barrier layer according to the invention has superior stability and appearance, as well as good barrier properties.
However, there is a need for an improved tablet which forms a detergent composition which provides faster dissolution in water without leaving any residue.
Objects of the Invention
In view of the foregoing, it is an object of the present invention to provide a composition in a tablet format.
It is another object of the present invention to provide a detergent tablet.
It is yet another object of the present invention is to a provide a unit dose tablet which forms a liquid detergent composition on dissolution in water.
It is yet another object of the present invention to provide a unit dose tablet which is hard to resist breakage during storage and transportation yet dissolve fast in water to form a liquid detergent.
It is yet another object of the present invention to provide a unit dose tablet composition which forms a transparent liquid detergent composition on dissolution in water.
The present inventors while working on this have surprisingly found that a tablet comprising a surfactant and a hydrogel, dissolves fast in water providing a transparent liquid detergent.
Thus, satisfying one or more of the above-mentioned objects.
Summary of the Invention
In a first aspect, the present invention provides a unit dose tablet comprising: a) a surfactant; b) 0.1 to 10 % by weight hydrogel; and, c) a water-soluble inorganic salt, wherein the hydrogel has a swelling ratio of at least 50, wherein swelling ratio is defined by the formula: SR (Swelling ratio) = (WS-WD)/WD,
Where Ws is the weight of the hydrogel after swelling, and WD is the weight of the dried hydrogel.
In a second aspect, the present invention provides a process for forming a liquid detergent comprising the steps of providing water in a container, adding a tablet according to the first aspect into the water, wherein the ratio of tablet to water is in the range from 1 :5 to 1 : 100 by weight.
In another aspect, the present invention provides the use of a unit dose tablet according to the first aspect for dishwashing.
These and other aspects, features and advantages will become apparent to those of ordinary skill in the art from reading of the following detailed description. For the avoidance of doubt, any feature of one aspect of the present invention may be utilized in any other aspect of the invention. The word “comprising” is intended to mean “including” but not necessarily “consisting of’ or “composed of.” In other words, the listed steps or options need not be exhaustive. It is noted that the examples given in the description below are intended to clarify the invention and are not intended to limit the invention to those examples per se. Similarly, all percentages are weight/weight percentages unless otherwise indicated. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word “about”. Numerical ranges expressed in the format "from x to y" are understood to include x and y. When for a specific feature multiple preferred ranges are described in the format "from x to y", it is understood that all ranges combining the different endpoints are also contemplated.
Detailed Description of the Invention
By “unit dose” as used herein, implies an amount of a composition suitable for single time use.
The term “cross-polymer” as used herein preferably refers to a polymer formed by cross-linking of two or more copolymers, which contains repeating units of one or more monomers.
The term “stimulus” as used herein, preferably refers to environmental factors influencing the phase behaviour of a compound. For example, swelling-deswelling of certain hydrogels are affected by environmental factors such as, pH, temperature, ionic strength etc.
According to the present invention there is provided a unit dose tablet comprising a a surfactant, 0.1 to 10 % by weight hydrogel and a water-soluble inorganic salt, wherein the hydrogel has a swelling ratio of at least 50, wherein swelling ratio is given by the formula: SR (Swelling ratio) = (WS-WD)/WD, where Ws is the weight of the hydrogel after swelling, and WD is the weight of the dried hydrogel.
The tablet according to the present invention comprises a surfactant for providing detersive benefit. Preferably the amount of the surfactant is in the range 10 to 70% by weight of the tablet. Preferably higher the amount of surfactant is better the performance of the tablet. More preferably the amount of surfactant is in the range 15 to 70% by weight, even more preferably 20 to 70% by weight, yet more preferably 25 to 70% by weight of the tablet. Most preferably, the amount of surfactant is 30 to 60% by weight of the tablet.
Preferably the surfactant in the tablet is selected from anionic, non-ionic, cationic, amphoteric surfactant and mixture thereof.
Surfactant
Preferably the surfactant is an anionic surfactant. Anionic surfactant suitable for the present invention includes salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term “alkyl” being used to include the alkyl portion of higher acyl radicals. Examples of such materials include alkyl sulphates, alkyl ether sulphates, alkaryl sulfonates, alpha-olefin sulfonates and mixtures thereof. The alkyl radicals preferably contain from 10 to 18 carbon atoms and may be unsaturated. The alkyl ether sulphates may contain from one to ten ethylene oxide or propylene oxide units per molecule, and preferably contain one to three ethylene oxide units per molecule.
The suitable anionic surfactant includes alkylbenzene sulfonates. Preferably in an embodiment suitable for dishwash comprises linear alkylbenzene sulfonates (LAS) with an alkyl chain length of from 10 to 18 carbon atoms. Commercial LAS is a mixture of closely related isomers and homologues alkyl chain homologues, each containing an aromatic ring sulfonated at the “para” position and attached to a linear alkyl chain at any position except the terminal carbons. The linear alkyl chain typically has a chain length of from 11 to 15 carbon atoms, with the predominant materials having a chain length of about C12. Each alkyl chain homologue consists of a mixture of all the possible sulpho-phenyl isomers except for the 1 -phenyl isomer. LAS is normally formulated into compositions in acid (i.e. HLAS) form and then at least partially neutralized in-situ. The counterion for anionic surfactants is generally an alkali metal such as sodium or potassium; or an ammoniacal counterion such as monoethanolamine, (MEA) diethanolamine (DEA) or triethanolamine (TEA), monoisopropanolamine (MIPA). Mixtures of such counterions may also be employed. Sodium and potassium are preferred.
Preferably the suitable anionic surfactant includes alkyl sulphate surfactant (PAS), such as non- ethoxylated primary and secondary alkyl sulphates with an alkyl chain length of from 10 to 18.
Preferably the tablet suitable for laundry application may contain alkyl ether sulphates having a straight or branched chain alkyl group having 10 to 18, more preferably 12 to 14 carbon atoms and containing an average of 1 to 3 ethylene oxide (EO) units per molecule. A preferred example is sodium lauryl ether sulphate (SLES) in which the predominantly C12 lauryl alkyl group has been ethoxylated with an average of 3 EO units per molecule. The alkyl ether sulphates may be used alone or in combination with any other anionic surfactant.
Preferably the anionic surfactant is selected from primary alkyl sulphate, alkyl benzene sulphonates, alkyl ether sulphates and mixture thereof.
Preferably the amount of the anionic surfactant is in the range up to 100% by weight of the total amount of the surfactant. More preferably, the amount of anionic surfactant is in the range 10 to 90%, even more preferably 20 to 80%, most preferably 30 to 70% by weight of the total amount of surfactant.
The tablet according to the present invention may preferably comprises a non-ionic, cationic and amphoteric surfactant in addition to anionic surfactant.
Suitable non-ionic surfactants include water soluble aliphatic ethoxylated non-ionic surfactants including the primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol ethoxylates. This includes the condensation products of a higher alcohol (e.g., an alkanol containing about 8 to 16 carbon atoms in a straight or branched chain configuration) condensed with about 4 to 20 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with about 10 moles of ethylene oxide (EO), tridecanol condensed with about 6 to 15 moles of EO, myristyl alcohol condensed with about 10 moles of EO per mole of myristyl alcohol, the condensation product of EO with a cut of coconut fatty alcohol containing a mixture of fatty alcohols with alkyl chains varying from 10 to about 14 carbon atoms in length and wherein the condensate contains either about 6 moles of EO per mole of total alcohol or about 9 moles of EO per mole of alcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per mole of alcohol.
Examples of the foregoing non-ionic surfactants include, but are not limited to, the Neodol (trade mark, ex Shell), which are higher aliphatic, primary alcohol containing about 9 to 15 carbon atoms, such as C9 to C11 alkanol condensed with 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5), C12 to C13 alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C12 to C15 alkanol condensed with 12 moles ethylene oxide (Neodol 25-12), C14 to C15 alkanol condensed with 13 moles ethylene oxide (Neodol 45-13), and the like. Such ethoxamers have an HLB (hydrophobic lipophilic balance) value of about 8 to 15 and give good O/W emulsification, whereas ethoxamers with HLB values below 7 contain less than 4 ethylene oxide groups and tend to be poor emulsifiers and poor detergents.
Another group of suitable non-ionic surfactants are alkyl polyglycosides(APG) which are sugar derivatives of fatty alcohol. Example of such surfactants are decyl glucoside, lauryl glucoside, myristyl glucoside.
Suitable cationic surfactants are quaternary ammonium salts. According to the present invention quaternary ammonium salts are characterised in that the ammonium salt has the general formula: R1R2R3R4N+X- wherein R1 is a C12 to C18 alkyl group, each of R2, R3 and R4 independently is a C1 to C3 alkyl group and X is an inorganic anion. R1 is preferably a C14 to C16 straight chain alkyl group, more preferably C16. R2, R3 and R4 are preferably methyl groups. The inorganic anion (X-) is preferably chosen from halide, sulphate, bisulphate or hydroxide.
For the purposes of this invention, a quaternary ammonium hydroxide is considered to be a quaternary ammonium salt. More preferably the anion is a halide ion or sulphate, most preferably a chloride or sulphate. Cetyl-trimethylammonium chloride is a specific example of a suitable compound and commercially abundantly available.
Another type of quaternary ammonium cationic surfactant is the class of benzalkonium halides, also known as alkyldimethylbenzylammonium halides. The most common type being benzalkonium chloride, also known as alkyldimethylbenzylammonium chloride (or ADBAC).
Suitable amphoteric surfactants include derivatives of aliphatic quaternary ammonium, sulphonium and phosphonium compounds having an aliphatic radical of from 8 to 18 carbon atoms and an aliphatic radical substituted by an anionic water-solubilising group, for instance 3- (N-N-dimethyl-N-hexadecylammonium) propane-1 -sulphonate betaine, 3-(dodecylmethyl sulphonium) propane-1 -sulphonate betaine and 3- (cetylmethylphosphonium) ethane sulphonate betaine.
Examples of amphoteric surfactants suitable for the present invention include cocoamidopropyl betaine (CAPB), cocoamidopropyl amine oxide (CAPAO), cocodiethanol amide (CDEA) and cocomonoethanol amide (CMEA).
Hydrogel
The tablet according to the present invention comprises a hydrogel. Hydrogels are crosslinked polymers capable of absorbing water from 15 to 1500 times of their own weight. Without wishing to be limited by theory it is believed that the hydrogel in the tablet swells in contact with water, thereby disintegrates the tablet. This results in dissolving the detersive actives quickly in water.
The hydrogels having higher water absorbing capacity provides faster dissolution of the tablet. Often water absorbing capacity or swelling of a hydrogel is expressed in terms of swelling ratio, defined by,
Swelling ratio (SR)= (Ws- WD)/WD,
Where Ws is the weight of the hydrogel after swelling or fully hydrated, and WD is the weight of the dried hydrogel. Typically, higher values of SR indicate higher water absorbing capacity.
The swelling ratio (SR) of the hydrogels suitable for the present invention is at least 50, more preferably, at least 100 and most preferably at least 150. Preferably the hydrogel has a swelling ratio at most 1500, more preferably 1200 and most preferably 1000.
Preferably the amount of the hydrogel is in the range of 0.1 to 10% by weight of the tablet. More preferably, the amount of the hydrogel is in the range, 0.3 to 9% by weight, even more preferably 0.5 to 8% by weight, most preferably 0.8 to 7% by weight of the tablet.
Preferably the hydrogel is a cross-polymers comprising monomers selected from n-alkyl acrylamide, alkyl acrylic acid, ethylene oxide and mixture thereof.
Preferably the alkyl acrylic acid is C2 to C8 alkyl acrylic acid. Preferably the alkyl acrylic acid is selected from ethyl acrylic acid, n-propyl acrylic acid, n-butyl acrylic acid and mixture thereof. Preferably the n-alkyl acrylamide is C3 to C8 alkyl acrylamide.
Conventionally, swellable disintegrants, such as, cellulose derivative, pyrrolidone based, starch, clay, are known in tablet context. They swell in contact with water, thereby accelerate the disintegration of tablets. However, water absorption or swelling ratio of such disintegrants are significantly less compared to the hydrogel as claimed. Further, such disintegrants typically do not form gel like hydrogels, hence they do not involve de-swelling characteristic.
Preferably the hydrogel is responsive to a stimulus selected from pH, temperature, ionic strength or combination thereof. Without wishing to be limited by theory it is believed that the hydrogel in the tablet first swells in contact with water to disintegrate the tablet and then de swells in response to one of said stimuli forming a homogenous liquid, which blend with the surfactant and water to form a transparent liquid detergent.
Water-soluble inorganic salt The tablet comprises a water-soluble inorganic salt. The inorganic salt provide the ionic strength to the liquid. Typically, the water-soluble salt does not leave any residue, thereby forming transparent liquid detergent.
Typically, in contact with water, the hydrogel rapidly absorbs water and swells, thus disintegrate the tablet. Preferably the hydrogels are responsive to external stimuli. Preferably the stimulus is ionic strength. Wthout wishing to be limited by theory, it is believed that the water-soluble salt
provides desired ionic strength to de-swells the hydrogel. Thereby the tablet completely dissolves in water providing a transparent liquid detergent composition.
Preferably the solubility of the inorganic salt is in the range of 0.5 g/100 ml_ to 75 g/100 ml_ at 25 °C, preferably 1 g/100 ml_ to 70 g /100 ml_ at 25 °C, more preferably 5 g/100 ml_ to 65 g/100 ml_ at 25 °C, even more preferably 10 g/100 ml_ to 60 g/100 ml_.
The water-soluble inorganic salt suitable for the invention includes anhydrous forms or hydrates of salts of mono or divalent alkali metals, preferably anhydrous form, or hydrates of salts of mono alkali metals, more preferably wherein the mono alkali metals is sodium or potassium.
Preferably, the anhydrous forms or hydrates of salts of mono alkali metals is selected from the group consisting of sodium chloride, sodium sulphate, sodium carbonate, potassium chloride, potassium sulphate, potassium carbonate and mixtures thereof.
Preferably the amount of the inorganic salt is in the range of 0.1 to 40% by weight of the composition. More preferably, the amount of the inorganic salt is in the range 0.5 to 35% by weight, even more preferably 0.8 to 30% and most preferably 1.0 to 25% by weight of the tablet.
Effervescent system
Preferably the tablet according to the present invention comprises an effervescent system. The effervescence provides a cue to consumers about formation of the liquid detergent composition.
Preferably the effervescent system comprises a carbonate or bicarbonate salt and a compound selected from an organic acid, a salt of organic acid, a salt of inorganic acid and mixture thereof. Preferably the carbonate or bicarbonate salt is selected from sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, calcium carbonate, calcium bicarbonate and magnesium carbonate as well as mixtures thereof.
Preferably organic acid is selected from citric acid, tartaric acid, fumaric acid, malic acid, adipic acid, succinic acid, and mixture thereof. A preferred effervescent system is sodium bicarbonate and citric acid.
Alternately and preferably, the effervescent system may comprise a salt of an organic acid, such as sodium or potassium salt of an organic acid.
In another embodiment, the effervescent system preferably comprises a salt of inorganic acid. Preferably, the salt of inorganic acid is an acid salt, which formed by incomplete neutralisation of a bivalent or trivalent acid. Examples of such salts include sodium bisulphate, potassium bisulphate, mono-sodium phosphate etc.
Some of the preferred examples of effervescent systems are as follows: a) a combination of sodium bicarbonate and citric acid; and b) a combination of sodium bicarbonate and sodium bisulphate.
Preferably the amount of the effervescent system is in the range from 1 to 40% by weight of the tablet. More preferably the amount of the effervescent system is in the range from 5 to 35% by weight and most preferably 10 to 30% by weight of the tablet.
Preferably in the effervescent system, the ratio of the bicarbonate salt to the organic acid or salt of organic acid or salt of inorganic acid is in the range 10:1 to 1:10, more preferably 5:1 to 1:5, most preferably 3:1 to 1:3 by weight.
Application
Preferably in one embodiment, the tablet according to the present invention is formulated for laundering. The term “laundering” herein refers to treating or washing fabrics. The tablet may be used directly for laundering, wherein a consumer drops the tablet in a bucket of water forming a wash liquor and soak their laundry load in the wash liquor and subsequently wash it. In such applications, it is desired that the amount of surfactant should be sufficient to clean the fabrics, however, should not leave excess detersive, which may force the consumer to rinse the fabric multiple time. Therefore, in such embodiments, preferably the amount of surfactant is in the range 10 to 40% by weight, more preferably 10 to 30%, most preferably 10 to 20% by weight of the tablet.
In another scenario, the consumer may prepare a liquid detergent by dissolving the tablet in a secondary container and store it for multiple use. In such scenario, preferably, the amount of surfactant is in the range 20 to 70% by weight, more preferably, 30 to 70% by weight and more preferably 40 to 70% by weight of the tablet.
Preferably, in laundry context, the anionic surfactant in the tablet is selected from alkyl benzene sulphonates, alkyl ether sulphates and mixture thereof.
In aforesaid cases, the tablet according to the present invention may further comprises other ingredients such as, builders, sequestrants, soil release polymers, perfume, enzyme, fluorescer. preservative etc.
In another embodiment, the tablet according to the present invention may be used for hard surface cleaning. Hard surface cleaning compositions are generally used for cleaning surfaces such as, kitchen utensils, dishes, kitchen platform, tabletop etc. One of such embodiments is a tablet for dishwashing.
In dishwashing context, preferably the anionic surfactant in the tablet is selected from primary alkyl sulphate, alkyl benzene sulphonates and mixture thereof.
In another embodiment, the tablet may be used for machine dishwashing, where a consumer dose the tablet in dishwashing machine. In such cases, the tablet may not contain an effervescent system. Moreover, it is preferable not to have excessive foam. Therefore, tablet according to such embodiment may contain an antifoaming agent.
Preferably tablets according to the present invention suitable for dishwashing further comprises a solvent for providing degreasing benefit.
The tablet according to the present invention may be provided with a container. The tablet may be dosed in the container containing sufficient water. The tablet dissolves in the water thereby providing a cleaning composition. The container may be equipped with a spray head or foam engine, which helps in dispensing the cleaning composition directly on the surface as spray or foam.
It is also possible to provide a cleaning product comprising a tablet as claimed herein along with a foam dispenser. The tablet dissolves in water providing a liquid cleaning composition, which thereupon may be filled in the dispenser. Alternatively, the tablet may be dosed in the dispenser and water is added, which forms a liquid cleaning composition inside the dispenser. The foam dispenser herein may be a pressurised gas-based or foam trigger-based dispenser.
Preferably the foam dispenser comprises a container to hold the composition and a foam trigger, which includes a trigger lever, a pump, a mixing chamber and a nozzle. The pump comprises a piston moving in a cavity against a spring. The cavity is in fluid communication with
the container and the mixing chamber, wherein it has one-way valves which allow the composition to flow from the container to the mixing chamber. Typically, the foam trigger is actuated by pressing the trigger lever, which in turn pressed the piston against the spring thereby pushing the composition stored in the cavity to the mixing chamber. In the mixing chamber the composition mixed with air and pass through a mesh before dispensing out of the nozzle as foam. On subsequent release of the trigger lever, the spring push back the piston, thereby the empty cavity fills with the composition flowing from the container. Foam dispensers equipped with foam trigger rely on the pump action, hence do not require a pressurised gas.
It may also possible that the foam dispenser comprises a pressurised gas, stored along with the composition in the container. Such dispenser is activated by opening a one-way valve, thereby releases the gas along with composition through a nozzle and dispenses a foam.
Water-soluble packaging
Preferably the tablet according to the invention is single dose format. Typically, the consumer drops the tablet directly in to the water to form a liquid detergent. Preferably the tablet is packed in a water-soluble primary packaging, which dissolve in contact with water releasing the tablet into the water.
Process of making tablet
Preferably, tablets are prepared following conventional tablet making process. In the process a homogenised dry powder is prepared by mixing the ingredients in specified ratio. Subsequently, the powder is filled in a die-block and compressed to form the tablet. A rotary press or a hydraulic press maybe employed to compress the powder to tablet.
Preferably the pressure applied during the compression is in the range 1 to 100 kg-f/cm2, more preferably 2.5 to 75 kg-f/cm2, even more preferably 5 to 50 kg-f/cm2, and most preferably 7.5 to 30 kg-f/cm2.
There is provided a method for forming a liquid detergent comprising the steps of providing water in a container, adding a tablet according to the present invention, wherein the ratio of the tablet to water is in the range of 1 : 5 to 1 : 100 by weight. More preferably the ratio of the tablet to water is in the range 1:10 to 1: 70 by weight, most preferably 1:15 to 1:50 by weight. Preferably, a consumer prepares the liquid detergent by dissolving the tablet in a secondary container and store it for multiple use.
There is provided a use of a tablet according to present invention for dishwashing. Preferably the tablet is dissolved in a bowl of water to form a liquid dishwashing detergent and subsequently used by consumers for hand dishwashing. Examples:
Tablets
Dry mix compositions were prepared according to the recipes provided in table 1. In subsequent step, 19 gm of each dry mix composition was taken in die-block and compressed by applying a pressure of 10 kg-f/cm2, thereby forming the tablet.
Table 1
Formulation 1 is according to the invention and formulation A and B are comparative examples.
Evaluation of the tablets
For evaluating the performance of the tablets made by said process, each tablet was added to 1 litre water and allowed to dissolve. The time of dissolution of each tablet was noted using a stopwatch.
Table 2
From the above table it is evident that tablets prepared according to formulation A and B do not dissolve even after ten minutes thereby fails to from a liquid detergent. Whereas tablet comprising a surfactant and a hydrogel dissolve fast and forms a homogenised transparent liquid detergent.
Claims
1. A unit dose tablet comprising; a) a surfactant; b) 0.1 to 10 % by weight hydrogel; and, c) a water-soluble inorganic salt, wherein the hydrogel has a swelling ratio of at least 50, wherein swelling ratio is deifned by the formula: SR (Swelling ratio) = (WS-WD)/WD,
Where Ws is the weight of the hydrogel after swelling, and WD is the weight of the dried hydrogel.
2. A unit dose tablet according to claim 1 wherein the amount of the surfactant is in the range from 10 to 70% by weight of the tablet.
3. A unit dose tablet according to claim 1 or 2 wherein the surfactant is selected from anionic surfactant, non-ionic surfactant and combinations thereof.
4. A unit dose tablet according to claim 3 wherein the anionic surfactant is selected from primary alkyl sulphate, alkyl benzene sulphonates, alkyl ether sulphates and combinations thereof.
5. A unit dose tablet according to claim 3 wherein the non-ionic surfactant is selected from alcohol ethoxylate, alkyl polyglycoside and combinations thereof.
6. A unit dose tablet according to any one of the preceding claims wherein the hydrogel has a swelling ratio (SR) at least 100.
7. A unit dose tablet according to any one of the preceding claims wherein the hydrogel is a cross-polymers comprising monomers selected from n-alkyl acrylamide, alkyl acrylic and combinations thereof.
8. A unit dose tablet according to any one of the preceding claims wherein the hydrogel is a stimulus responsive hydrogel.
9. A unit dose table according to claim 8 wherein the stimulus is selected from pH, temperature, ionic strength and combination thereof.
10. A unit dose tablet according to claim 9 wherein the stimulus is ionic strength.
11. A unit dose tablet according to any one of preceding claims wherein the water-soluble inorganic salt is selected from sodium chloride, sodium sulphate, sodium carbonate, potassium chloride, potassium sulphate, potassium carbonate and combinations thereof.
12. A unit dose tablet according to any one of the preceding claims comprising 0.1 to 40% by weight water-soluble inorganic salt.
13. A unit dose tablet according to claim 12 wherein the effervescent system comprising:
(a) a carbonate or a bicarbonate salt; and
(b) a compound selected from an organic acid, a salt of organic acid, a salt of inorganic acid and mixtures thereof.
14. A process for forming a liquid detergent composition comprising the steps of: a) providing water in a container; and b) adding a tablet according to any one of the preceding claims 1 to 13 into the water, wherein the ratio of tablet to water is in the range from 1:5 to 1:100 by weight.
15. Use of a tablet according to any one of claims 1 to 13 for dishwashing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21177953 | 2021-06-07 | ||
| PCT/EP2022/064894 WO2022258453A1 (en) | 2021-06-07 | 2022-06-01 | A tablet composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4352195A1 true EP4352195A1 (en) | 2024-04-17 |
Family
ID=76305773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22731589.2A Pending EP4352195A1 (en) | 2021-06-07 | 2022-06-01 | A tablet composition |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4352195A1 (en) |
| CN (1) | CN117425720A (en) |
| BR (1) | BR112023025567A2 (en) |
| WO (1) | WO2022258453A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1049352B (en) * | 1955-05-02 | 1959-01-29 | A/B Alfred Ullmann &. Co., Stockholm | Mixture for making soap bubbles |
| WO1998003064A1 (en) * | 1996-07-23 | 1998-01-29 | Fmc Corporation | Disintegrant composition for dispersible solids |
| GB9711829D0 (en) * | 1997-06-06 | 1997-08-06 | Unilever Plc | Detergent compositions |
| EP1004661A1 (en) * | 1998-11-11 | 2000-05-31 | DALLI-WERKE WÄSCHE- und KÖRPERPFLEGE GmbH & Co. KG | High density granule, method for production thereof, and its use as disintegrant in tablets |
| DE10002010A1 (en) * | 2000-01-19 | 2001-07-26 | Cognis Deutschland Gmbh | Tablet dispersing agent for detergent tablets comprises swellable materials, fatty alcohol sulfates, builder and optionally water |
| EP1642960B1 (en) | 2004-10-01 | 2007-10-31 | Unilever N.V. | Detergent compositions in tablet form |
| DE102019210899A1 (en) * | 2019-07-23 | 2021-01-28 | Henkel Ag & Co. Kgaa | Moldings containing active substances and processes for their production |
-
2022
- 2022-06-01 CN CN202280040415.4A patent/CN117425720A/en active Pending
- 2022-06-01 BR BR112023025567A patent/BR112023025567A2/en unknown
- 2022-06-01 WO PCT/EP2022/064894 patent/WO2022258453A1/en active Application Filing
- 2022-06-01 EP EP22731589.2A patent/EP4352195A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022258453A1 (en) | 2022-12-15 |
| CN117425720A (en) | 2024-01-19 |
| BR112023025567A2 (en) | 2024-02-20 |
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