CA2269988A1 - Surface-cleaning method - Google Patents
Surface-cleaning method Download PDFInfo
- Publication number
- CA2269988A1 CA2269988A1 CA002269988A CA2269988A CA2269988A1 CA 2269988 A1 CA2269988 A1 CA 2269988A1 CA 002269988 A CA002269988 A CA 002269988A CA 2269988 A CA2269988 A CA 2269988A CA 2269988 A1 CA2269988 A1 CA 2269988A1
- Authority
- CA
- Canada
- Prior art keywords
- independently
- cleaning
- water
- acid
- ch2ch2oh
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 51
- 239000012528 membrane Substances 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 21
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 7
- 239000010439 graphite Substances 0.000 claims abstract description 7
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 235000013311 vegetables Nutrition 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 238000011010 flushing procedure Methods 0.000 claims description 28
- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 claims description 13
- -1 H3NCH2CH2OH Inorganic materials 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 229910003202 NH4 Inorganic materials 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 229920001308 poly(aminoacid) Polymers 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920001955 polyphenylene ether Polymers 0.000 claims description 4
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 claims 2
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical compound [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 claims 2
- 239000000470 constituent Substances 0.000 claims 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000004753 textile Substances 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract 1
- 239000002759 woven fabric Substances 0.000 abstract 1
- 239000012466 permeate Substances 0.000 description 25
- 239000007864 aqueous solution Substances 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 150000003839 salts Chemical class 0.000 description 10
- 238000000926 separation method Methods 0.000 description 10
- 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 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 5
- 229920000805 Polyaspartic acid Polymers 0.000 description 5
- 235000003704 aspartic acid Nutrition 0.000 description 5
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 5
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 108090000790 Enzymes Proteins 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000013065 commercial product Substances 0.000 description 4
- 239000008139 complexing agent Substances 0.000 description 4
- 229940088598 enzyme Drugs 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- 125000002730 succinyl group Chemical group C(CCC(=O)*)(=O)* 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 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
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 108010064470 polyaspartate Proteins 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- YDBVAWZTOAZPTJ-REOHCLBHSA-N (2s)-2-(hydroxyamino)butanedioic acid Chemical compound ON[C@H](C(O)=O)CC(O)=O YDBVAWZTOAZPTJ-REOHCLBHSA-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
- REJHVSOVQBJEBF-OWOJBTEDSA-N 5-azaniumyl-2-[(e)-2-(4-azaniumyl-2-sulfonatophenyl)ethenyl]benzenesulfonate Chemical compound OS(=O)(=O)C1=CC(N)=CC=C1\C=C\C1=CC=C(N)C=C1S(O)(=O)=O REJHVSOVQBJEBF-OWOJBTEDSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- DCXYFEDJOCDNAF-UHFFFAOYSA-N Asparagine Natural products OC(=O)C(N)CC(N)=O DCXYFEDJOCDNAF-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-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
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- MDBVZFGSKMWJFD-UHFFFAOYSA-N OP(O)=O.OP(O)(O)=O Chemical compound OP(O)=O.OP(O)(O)=O MDBVZFGSKMWJFD-UHFFFAOYSA-N 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 108010009736 Protein Hydrolysates Proteins 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 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
- 235000004279 alanine Nutrition 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 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
- 235000019418 amylase Nutrition 0.000 description 1
- 229940025131 amylases Drugs 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 235000009582 asparagine Nutrition 0.000 description 1
- 229960001230 asparagine Drugs 0.000 description 1
- 125000006297 carbonyl amino group Chemical group [H]N([*:2])C([*:1])=O 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229940080260 iminodisuccinate Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000018977 lysine Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000003531 protein hydrolysate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012465 retentate Substances 0.000 description 1
- 238000001374 small-angle light scattering Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004094 surface-active agent 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
- 238000000108 ultra-filtration Methods 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3209—Amines or imines with one to four nitrogen atoms; Quaternized amines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- 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
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3719—Polyamides or polyimides
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3245—Aminoacids
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/34—Organic compounds containing sulfur
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/164—Use of bases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/166—Use of enzymatic agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
-
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
-
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/18—Glass; Plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Cleaning By Liquid Or Steam (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19700493.8 | 1997-01-09 | ||
| DE19700493A DE19700493A1 (de) | 1997-01-09 | 1997-01-09 | Verfahren zur Reinigung von Oberflächen |
| PCT/EP1998/000016 WO1998030661A1 (de) | 1997-01-09 | 1998-01-03 | Verfahren zur reinigung von oberflächen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2269988A1 true CA2269988A1 (en) | 1998-07-16 |
Family
ID=7817029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002269988A Abandoned CA2269988A1 (en) | 1997-01-09 | 1998-01-03 | Surface-cleaning method |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6387189B1 (https=) |
| EP (1) | EP0970167B1 (https=) |
| JP (1) | JP2001507750A (https=) |
| KR (1) | KR100494284B1 (https=) |
| AT (1) | ATE310071T1 (https=) |
| AU (1) | AU724604B2 (https=) |
| BR (1) | BR9806156A (https=) |
| CA (1) | CA2269988A1 (https=) |
| DE (2) | DE19700493A1 (https=) |
| IL (1) | IL129509A (https=) |
| WO (1) | WO1998030661A1 (https=) |
Families Citing this family (60)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69740003D1 (de) | 1996-12-20 | 2010-11-04 | Siemens Water Tech Corp | Reinigungsmethode |
| US20040052826A1 (en) * | 2000-09-11 | 2004-03-18 | Elena Fernandez-Kleinlein | Cosmetic and pharmaceutical compositions and their use |
| AUPR421501A0 (en) | 2001-04-04 | 2001-05-03 | U.S. Filter Wastewater Group, Inc. | Potting method |
| AUPR692401A0 (en) | 2001-08-09 | 2001-08-30 | U.S. Filter Wastewater Group, Inc. | Method of cleaning membrane modules |
| US6546940B1 (en) * | 2001-09-10 | 2003-04-15 | Johnsondiversey, Inc. | Cleaning composition and method for using the same |
| JP2003136027A (ja) | 2001-11-01 | 2003-05-13 | Ngk Insulators Ltd | 半導体製造装置中で使用するためのセラミック部材を洗浄する方法、洗浄剤および洗浄剤の組み合わせ |
| ATE333318T1 (de) * | 2001-11-16 | 2006-08-15 | Us Filter Wastewater Group Inc | Methode zur reinigung von membranen |
| US7247238B2 (en) | 2002-02-12 | 2007-07-24 | Siemens Water Technologies Corp. | Poly(ethylene chlorotrifluoroethylene) membranes |
| DE10221982A1 (de) * | 2002-05-17 | 2003-11-27 | Goldschmidt Ag Th | Wässrige Desinfektionsmittel auf Basis von Alkylaminverbindungen und Aminopolycarbonsäuren |
| AUPS300602A0 (en) | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| CA2501628C (en) | 2002-10-10 | 2012-12-04 | U.S. Filter Wastewater Group, Inc. | A filtration and backwashing arrangement for membrane modules |
| AU2002953111A0 (en) | 2002-12-05 | 2002-12-19 | U. S. Filter Wastewater Group, Inc. | Mixing chamber |
| US7250114B2 (en) * | 2003-05-30 | 2007-07-31 | Lam Research Corporation | Methods of finishing quartz glass surfaces and components made by the methods |
| KR101115173B1 (ko) | 2003-08-29 | 2012-02-24 | 지멘스 워터 테크놀로지스 코포레이션 | 역류 |
| WO2005046849A1 (en) | 2003-11-14 | 2005-05-26 | U.S. Filter Wastewater Group, Inc. | Improved module cleaning method |
| US7247210B2 (en) * | 2004-02-23 | 2007-07-24 | Ecolab Inc. | Methods for treating CIP equipment and equipment for treating CIP equipment |
| US7392811B2 (en) * | 2004-02-23 | 2008-07-01 | Ecolab Inc. | Delivery head for multiple phase treatment composition, vessel including a delivery head, and method for treating a vessel interior surface |
| US7220358B2 (en) * | 2004-02-23 | 2007-05-22 | Ecolab Inc. | Methods for treating membranes and separation facilities and membrane treatment composition |
| WO2005092799A1 (en) | 2004-03-26 | 2005-10-06 | U.S. Filter Wastewater Group, Inc. | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
| AU2005240524C1 (en) | 2004-04-22 | 2009-12-24 | Evoqua Water Technologies Llc | Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials |
| NZ588094A (en) | 2004-08-20 | 2012-04-27 | Siemens Water Tech Corp | Potting head for hollow fibre filter module |
| US8790515B2 (en) | 2004-09-07 | 2014-07-29 | Evoqua Water Technologies Llc | Reduction of backwash liquid waste |
| AU2005284677B2 (en) | 2004-09-14 | 2010-12-23 | Evoqua Water Technologies Llc | Methods and apparatus for removing solids from a membrane module |
| NZ553771A (en) | 2004-09-15 | 2010-11-26 | Siemens Water Tech Corp | Continuously variable aeration of membrane filtration system and flow control device when used in such application |
| US7591950B2 (en) | 2004-11-02 | 2009-09-22 | Siemens Water Technologies Corp. | Submerged cross-flow filtration |
| DE102004053015A1 (de) * | 2004-11-03 | 2006-05-04 | Lanxess Deutschland Gmbh | Rußreiniger |
| ZA200703570B (en) * | 2004-11-03 | 2008-08-27 | Johnson Diversey Inc | Method of cleaning containers for recycling |
| US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
| NZ583228A (en) | 2004-12-24 | 2012-05-25 | Siemens Industry Inc | Cleaning in membrane filtration systems |
| NZ562786A (en) | 2005-04-29 | 2010-10-29 | Siemens Water Tech Corp | Chemical clean for membrane filter |
| SG140229A1 (en) | 2005-08-22 | 2008-03-28 | Siemens Water Tech Corp | An assembly for water filtration using a tube manifold to minimise backwash |
| WO2007044345A2 (en) | 2005-10-05 | 2007-04-19 | Siemens Water Technologies Corp. | Method and apparatus for treating wastewater |
| WO2007044415A2 (en) | 2005-10-05 | 2007-04-19 | Siemens Water Technologies Corp. | Method and apparatus for treating wastewater |
| US7455765B2 (en) | 2006-01-25 | 2008-11-25 | Siemens Water Technologies Corp. | Wastewater treatment system and method |
| US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| EP2463017A1 (en) | 2007-05-29 | 2012-06-13 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
| DE102008010750B4 (de) | 2008-02-21 | 2010-02-18 | Engel Oberflächentechnik GmbH | Anordnung und Verfahren zur Reinigung von Solarkollektoren |
| CN102112213B (zh) | 2008-07-24 | 2016-08-03 | 伊沃夸水处理技术有限责任公司 | 用于膜过滤模块的框架系统 |
| JP2012500117A (ja) | 2008-08-20 | 2012-01-05 | シーメンス ウォーター テクノロジース コーポレイション | 膜濾過システムの逆洗エネルギ効率の改善 |
| AU2010101488B4 (en) | 2009-06-11 | 2013-05-02 | Evoqua Water Technologies Llc | Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane |
| CN102869432B (zh) | 2010-04-30 | 2016-02-03 | 伊沃夸水处理技术有限责任公司 | 流体流分配装置 |
| US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
| JP2014528354A (ja) | 2011-09-30 | 2014-10-27 | エヴォクア ウォーター テクノロジーズ エルエルシーＥｖｏｑｕａ Ｗａｔｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓｌｌｃ | 隔離バルブ |
| CN103958024B (zh) | 2011-09-30 | 2016-07-06 | 伊沃夸水处理技术有限责任公司 | 改进的歧管排列 |
| AU2013280452B2 (en) | 2012-06-28 | 2017-07-20 | Evoqua Water Technologies Llc | A potting method |
| DE112013004713T5 (de) | 2012-09-26 | 2015-07-23 | Evoqua Water Technologies Llc | Membransicherungsvorrichtung |
| AU2013231145B2 (en) | 2012-09-26 | 2017-08-17 | Evoqua Water Technologies Llc | Membrane potting methods |
| KR20150059788A (ko) | 2012-09-27 | 2015-06-02 | 에보쿠아 워터 테크놀로지스 엘엘씨 | 침지된 막을 위한 가스 스코어링 장치 |
| DE102012218021A1 (de) | 2012-10-02 | 2014-04-03 | Henkel Ag & Co. Kgaa | Leistungsgesteigerte Wasch- oder Reinigungsmittel mit Komplexbildnern II |
| DE102012218019A1 (de) * | 2012-10-02 | 2014-04-03 | Henkel Ag & Co. Kgaa | Leistungsgesteigerte Wasch- oder Reinigungsmittel mit Komplexbildnern I |
| HUE061765T2 (hu) | 2013-10-02 | 2023-08-28 | Rohm & Haas Electronic Mat Singapore Pte Ltd | Berendezés membrán filtrációs modul javítására |
| JP6090362B2 (ja) * | 2015-05-20 | 2017-03-08 | 栗田工業株式会社 | ポリアミド系逆浸透膜の洗浄液、および洗浄方法 |
| WO2017011068A1 (en) | 2015-07-14 | 2017-01-19 | Evoqua Water Technologies Llc | Aeration device for filtration system |
| JP6090376B2 (ja) * | 2015-07-27 | 2017-03-08 | 栗田工業株式会社 | 水処理用ポリアミド系逆浸透膜用洗浄剤、洗浄液、および洗浄方法 |
| JP6090377B2 (ja) * | 2015-07-27 | 2017-03-08 | 栗田工業株式会社 | 水処理用ポリアミド系逆浸透膜用洗浄剤、洗浄液、および洗浄方法 |
| EP3500657A1 (en) | 2016-08-16 | 2019-06-26 | Diversey, Inc. | A composition for aesthetic improvement of food and beverage containers and methods thereof |
| AR112957A1 (es) | 2017-09-29 | 2020-01-08 | Ecolab Usa Inc | Proceso de limpieza de membrana |
| US11738310B2 (en) * | 2019-12-31 | 2023-08-29 | Industrial Technology Research Institute | Method for cleaning membrane |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1306331A (https=) | 1970-12-07 | 1973-02-07 | ||
| SU639863A1 (ru) | 1977-06-16 | 1978-12-30 | Калининский Ордена Трудового Красного Знамени Политехнический Институт Калининский Сельско-Хозяйственный Институт | Способ получени комплексона-иминоди нтарной кислоты |
| DE3626672A1 (de) | 1986-08-07 | 1988-02-11 | Bayer Ag | Polyasparaginamidsaeure |
| EP0261874A3 (en) * | 1986-09-22 | 1989-01-25 | The Procter & Gamble Company | Concentrated hard-surface cleaning compositions |
| US4808328A (en) * | 1987-05-08 | 1989-02-28 | Joseph N. Cooper | Iodine-based antiseptic cleanser composition |
| DE3739610A1 (de) | 1987-11-23 | 1989-06-01 | Basf Ag | Nitrilo-di-aepfel-mono-essigsaeuren, verfahren zu ihrer herstellung und ihre verwendung |
| DE4024552A1 (de) | 1990-08-02 | 1992-02-06 | Henkel Kgaa | Derivat der aminobernsteinsaeure als komplexierungsmittel |
| DK0513948T3 (da) | 1991-05-15 | 1998-10-26 | Hampshire Chemical Corp | Sammensætninger indeholdende biologisk nedbrydelige chelateringsmidler til rensning af hårde overflader |
| EP0561464A1 (en) * | 1992-03-20 | 1993-09-22 | Unilever N.V. | Polyaminoacids as builder for rinse aid compositions |
| US5288783A (en) | 1992-05-14 | 1994-02-22 | Srchem Incorporated | Preparation of salt of polyaspartic acid by high temperature reaction |
| JPH06330020A (ja) | 1993-05-20 | 1994-11-29 | Nippon Shokubai Co Ltd | キレート性組成物及びその製法並びに洗剤組成物 |
| JP3326867B2 (ja) | 1993-05-24 | 2002-09-24 | 株式会社日本触媒 | イミノジコハク酸金属塩の製造方法 |
| DE4322410A1 (de) | 1993-07-06 | 1995-01-12 | Bayer Ag | Verfahren zur Herstellung von Polysuccinimid und Polyasparaginsäure |
| EP0734434A1 (en) * | 1993-12-14 | 1996-10-02 | The Procter & Gamble Company | Liquid laundry detergents containing polyamino acid and polyalkylene glycol |
| DE19528059A1 (de) | 1995-07-31 | 1997-02-06 | Bayer Ag | Wasch- und Reinigungsmittel mit Iminodisuccinaten |
| US5703033A (en) * | 1996-02-06 | 1997-12-30 | The Procter & Gamble Company | Low sudsing, low streaking and filming hard surface cleaners |
-
1997
- 1997-01-09 DE DE19700493A patent/DE19700493A1/de not_active Ceased
-
1998
- 1998-01-03 AU AU62070/98A patent/AU724604B2/en not_active Ceased
- 1998-01-03 WO PCT/EP1998/000016 patent/WO1998030661A1/de not_active Ceased
- 1998-01-03 DE DE59813197T patent/DE59813197D1/de not_active Expired - Fee Related
- 1998-01-03 BR BR9806156-9A patent/BR9806156A/pt unknown
- 1998-01-03 US US09/269,568 patent/US6387189B1/en not_active Expired - Fee Related
- 1998-01-03 JP JP53051998A patent/JP2001507750A/ja not_active Ceased
- 1998-01-03 CA CA002269988A patent/CA2269988A1/en not_active Abandoned
- 1998-01-03 AT AT98904031T patent/ATE310071T1/de not_active IP Right Cessation
- 1998-01-03 KR KR10-1999-7003016A patent/KR100494284B1/ko not_active Expired - Fee Related
- 1998-01-03 EP EP98904031A patent/EP0970167B1/de not_active Expired - Lifetime
- 1998-01-03 IL IL12950998A patent/IL129509A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100494284B1 (ko) | 2005-06-13 |
| IL129509A0 (en) | 2000-02-29 |
| DE19700493A1 (de) | 1998-07-16 |
| EP0970167B1 (de) | 2005-11-16 |
| ATE310071T1 (de) | 2005-12-15 |
| AU724604B2 (en) | 2000-09-28 |
| US6387189B1 (en) | 2002-05-14 |
| DE59813197D1 (de) | 2005-12-22 |
| KR20000068729A (ko) | 2000-11-25 |
| WO1998030661A1 (de) | 1998-07-16 |
| AU6207098A (en) | 1998-08-03 |
| BR9806156A (pt) | 1999-10-19 |
| EP0970167A1 (de) | 2000-01-12 |
| IL129509A (en) | 2003-02-12 |
| JP2001507750A (ja) | 2001-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6387189B1 (en) | Surface-cleaning method | |
| DE69200380T2 (de) | Im Waschverfahren hydrolysierbares Polyimidbiopolymer enthaltende Waschmittelzusammensetzung. | |
| WO1994001486A1 (de) | Modifizierte polyasparaginsäuren, verfahren zu ihrer herstellung und ihre verwendung | |
| BR112016005593B1 (pt) | Processo para preparar ácido poliaspártico modificado ou sais do mesmo, composições de lavagem de louça e de detergente e de limpeza, e, uso de um ácido poliaspártico modificado | |
| DE4211713A1 (de) | Verfahren zur Herstellung von Aminodicarbonsäure-N,N-diessigsäuren | |
| EP3230344A1 (de) | Verfahren zur herstellung von polyasparaginsäure mittels vorkondensat | |
| CN106943879A (zh) | 一种反渗透膜有机污垢的清洗剂 | |
| DE19647293C1 (de) | Verhinderung und Verzögerung der Belagsbildung in Membranprozessen | |
| KR20180130513A (ko) | 킬레이트제의 혼합물, 및 이러한 혼합물의 제조 방법 | |
| EP0396999B1 (de) | 2-Methyl- und 2-Hydroxymethyl-serin-N,N-diessigsäure und ihre Derivate | |
| US3686128A (en) | Washing,bleaching and cleansing agents containing poly - (n-tricarballylic acid)-alkyleneimines | |
| DE4429976A1 (de) | Sulfonsäuregruppen enthaltende Polyasparaginsäurederivate, ihre Verwendung und Herstellung | |
| EP0411436B1 (de) | Verwendung von 2-Hydroxy-3-aminopropionsäure-Derivaten als Komplex-bildner, Bleichmittelstabilisatoren und Gerüststoffe in Wasch- und Reinigungsmitteln | |
| US5929006A (en) | Cleaning agent composition | |
| US3784486A (en) | Alpha,alpha-carboxyalkoxy succinic acid compounds as detergent builders and sequestering agents | |
| US4107064A (en) | Metal sequestering method | |
| FR2744126A1 (fr) | Procede de preparation de polymeres a unites succinyle repetees et utilisation des polymeres obtenus dans des systemes aqueux et non aqueux | |
| US5726341A (en) | Amine nitrile intermediate for the preparation of 2-hydroxyethyl iminodiacetic acid | |
| US6013612A (en) | Cleaning agent composition | |
| US4066687A (en) | 2,3-carboxy alkoxy succinic acid and salts thereof | |
| US3980578A (en) | Metal sequestering method and composition using α,α'-carboxyalkoxy succinic acid compounds | |
| DE4128510A1 (de) | Phosphonomethylierte polyacrylamide, verfahren zu ihrer herstellung und ihre verwendung | |
| EP2388308A1 (en) | Cleaning composition with improved stain removal | |
| EP2942385A1 (en) | Use of oxidized humic acid and its salts in cleaning compositions | |
| US5023018A (en) | Use of polyhydroxyalkylamine-N,N-dicarboxylic acids and their salts as builders in detergents and cleaning agents |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |