EP1003077A2 - Verfahren zur Herstellung von als Tablette formulierten fotografischen Prozesschemikalien - Google Patents
Verfahren zur Herstellung von als Tablette formulierten fotografischen Prozesschemikalien Download PDFInfo
- Publication number
- EP1003077A2 EP1003077A2 EP99119025A EP99119025A EP1003077A2 EP 1003077 A2 EP1003077 A2 EP 1003077A2 EP 99119025 A EP99119025 A EP 99119025A EP 99119025 A EP99119025 A EP 99119025A EP 1003077 A2 EP1003077 A2 EP 1003077A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- less
- hardness
- tablet
- tablets
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000126 substance Substances 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000007858 starting material Substances 0.000 claims abstract description 6
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 239000002075 main ingredient Substances 0.000 claims 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 18
- 238000005469 granulation Methods 0.000 abstract description 9
- 230000003179 granulation Effects 0.000 abstract description 9
- 238000002203 pretreatment Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 19
- 239000008187 granular material Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 16
- 238000003860 storage Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 10
- 239000005913 Maltodextrin Substances 0.000 description 8
- 229920002774 Maltodextrin Polymers 0.000 description 8
- 229940035034 maltodextrin Drugs 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010298 pulverizing process Methods 0.000 description 6
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 5
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 5
- 229920002125 Sokalan® Polymers 0.000 description 5
- 108700004121 sarkosyl Proteins 0.000 description 5
- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 description 5
- 235000010265 sodium sulphite Nutrition 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 229940057838 polyethylene glycol 4000 Drugs 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229960002920 sorbitol Drugs 0.000 description 4
- LQIAZOCLNBBZQK-UHFFFAOYSA-N 1-(1,2-Diphosphanylethyl)pyrrolidin-2-one Chemical compound PCC(P)N1CCCC1=O LQIAZOCLNBBZQK-UHFFFAOYSA-N 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 238000007907 direct compression Methods 0.000 description 3
- -1 silver halide Chemical class 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 3
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 2
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 2
- AFBBKYQYNPNMAT-UHFFFAOYSA-N 1h-1,2,4-triazol-1-ium-3-thiolate Chemical compound SC=1N=CNN=1 AFBBKYQYNPNMAT-UHFFFAOYSA-N 0.000 description 2
- 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 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000014666 liquid concentrate Nutrition 0.000 description 2
- 235000010355 mannitol Nutrition 0.000 description 2
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 2
- 239000000546 pharmaceutical excipient Substances 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000811 xylitol Substances 0.000 description 2
- 235000010447 xylitol Nutrition 0.000 description 2
- 229960002675 xylitol Drugs 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 235000008504 concentrate Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 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
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000005550 wet granulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
- G03C5/265—Supplying of photographic processing chemicals; Preparation or packaging thereof of powders, granulates, tablets
Definitions
- the invention relates to a method for producing of photographic formulated as tablets (especially tablets) Process chemicals and those obtainable by these processes corresponding moldings.
- Exposed silver halide films are made in commercial laboratories developed and processed fully automatically. Color negative films for example, run through a developer bath Bleaching bath, a fixing bath and usually a stabilizing bath or several washing steps. The steps of bleaching and Fixing can be done using a bleach-fixing bath in one single processing step can be combined. The done developed negatives are exposed on color paper, the exposed color paper then also runs through a developing bath, usually a combined bleach-fix bath and final washing steps. The washing steps can be replaced by a stabilizing bath if necessary.
- Liquid concentrates need because of their water content Transport and storage relatively much space.
- the empty ones Concentrate containers represent a considerable volume of waste.
- Powdered chemicals are difficult to handle. Since the Precautions must be taken when powder can be dusted during handling to avoid adverse health effects for users to be hit.
- the granulation of the process chemicals before pressing one tablet is expensive.
- the object of the invention is to achieve this based on a simple, inexpensive method of manufacture to create such moldings.
- the invention further relates to a shaped body (in particular one tablet) by the aforementioned method is available.
- a shaped body is any body with a through shaping purposefully manufactured shape. It is preferably around a tablet.
- Photographic process chemicals are any chemicals that as part of one or more photographic processes (e.g. developing, fixing, bleach-fixing or the like) Can find application.
- the input materials are all those Substances that are part of the molded body. It is about on the one hand about the person or persons in the respective photographic Processing process of active substances (e.g. fixing and / or Bleach-fixing agent, developer) and auxiliary substances, that are photographically inert or conducive to photography.
- active substances e.g. fixing and / or Bleach-fixing agent, developer
- auxiliary substances that are photographically inert or conducive to photography.
- All insert materials of the molded body are water-soluble.
- a tablet produced according to the invention dissolves when setting the usual concentrations of the process chemicals completely in aqueous solution at the usual bath temperatures where the solution process can be slow, if such a tablet, for example, to regenerate a process bath serves. Any auxiliaries must be in such Extent be water soluble that dissolving for adjustment the desired concentration is not hindered.
- auxiliary substances that are photographically beneficial can be buffer substances, for example to set a desired pH, water softener (in particular complexing agents), possibly optical Brighteners, preservatives, antioxidants, antifoggants, Solubilizers, emulsifiers and additives to increase resistance to moisture his.
- An exemplary disclosure of suitable auxiliaries can be found in DE-A-197 46 879, the disclosure of which Reference to this also expressly in the present application is included. Reference is also made to the disclosure in Ullmann's Encyclopedia Chemicals Industrial Chemistry, 5th edition, vol. A20, chapter "Photography".
- Auxiliaries include, for example, photographic inert additives for tableting in question. It can be fillers, Binders, lubricants, flow regulators, lubricants, Act mold release agents and the like.
- photographic inert additives for tableting in question can be fillers, Binders, lubricants, flow regulators, lubricants, Act mold release agents and the like.
- suitable additives are referred to Rudolf Voigt, Textbook of Pharmaceutical Technology, 5th ed., Verlag Chemie, Weinheim 1984, page 178 ff.
- the disclosure content the specified passage is hereby expressly stated also made the subject of the present application.
- At least 50% of the inorganic portion of the feed materials is crushed to an average grain size of 125 ⁇ m or less.
- the comminution can be carried out by any suitable method, preferably the corresponding proportion of the starting materials is ground.
- the average grain size ⁇ m is defined according to DIN 66141 (page 18) by: Q3 i represents the mass distribution, the proportion of a grain class to the associated grain class.
- the feed materials are pressed directly (Direct tabletting) to a shaped body with a Molded hardness of at least 400 N.
- direct pressing or direct tabletting refers to the compression of powdery feedstocks without one over the invention Pre-treatment to a size reduction Molded body.
- Pre-treatment to a size reduction Molded body means "Direct pressing" that in any case that portion of the feed materials that in step a) to the specified grain size is crushed, no further pretreatment, in particular no granulation (e.g. fluidized bed granulation) is subjected.
- no granulation e.g. fluidized bed granulation
- the invention should not be excluded be that a remaining portion of the input materials (e.g. possible organic components) of a pretreatment such as Undergoes granulation. It is preferred according to the invention however, if all feed materials are not pretreated undergo, but immediately as a powder of Undergo direct tableting.
- the molded article produced according to the invention has a hardness from at least 400 N.
- the hardness is measured with a breaking strength tester TBH30 from ERWEKA.
- the tablet to be tested is between two extendable jaws clamped and with a rising Force applied.
- the one needed to break the tablet Force is registered (in N) and as a measure of the Tablet hardness specified.
- the moldings produced according to the invention preferably have an abrasion of less than 2%, more preferably less than 1%.
- This abrasion or the abrasion resistance is measured according to that in Example 3 of the present application specified procedures.
- the invention has recognized that surprisingly hard and sufficient abrasion-resistant tablets that are suitable for use in automatic feed magazines of commercial development machines are suitable, thanks to the direct compression without any need on a complex pretreatment of at least one essential Manufacture proportion of the ingredients of the tablet to let.
- This is surprising given the state of the art (Rudolf Voigt, textbook of pharmaceutical technology, Page 154 et seq.) Teaches that direct pressing is more precise Do not manufacture powder tablets of sufficient strength to let. It is expressly stated there that the Direct tabletting, at most, coarse crystalline substances grain sizes between 0.5 and 1 mm are considered optimal designated.
- the invention has recognized that contrary this teaching of the prior art hard and abrasion resistant Tablets can be made by direct compression correspondingly fine powder.
- At least 70% by weight is more preferred at least 80% by weight, more preferably at least 90% by weight of the inorganic portion of the feed materials crushed to the specified grain sizes.
- the invention can be the total inorganic portion of the feed materials can be comminuted accordingly, and any one organic part in whole or in part in this crushing be included.
- the moldings can contain binders, but their proportion preferably below 10% by weight, more preferably below 5, is less than 2 or less than 1% by weight. Ggt. can on binder to be completely dispensed with.
- At least 50% by weight are preferred, more preferably at least 80% by weight, more preferably at least 90 or 95 %
- it can be amonioma and or sodium tiosulfate.
- the tablets according to the invention with these salts as the main component for example Use in a fixer or bleach-fixer his.
- ammonium thiosulfate 90/10 which is 90% commercially available consists of ammonium thiosulfate and 10% sodium thiosulfate, were in a BAUERMEISTER powder mill with turbo insert ground to a particle size of less than 125 ⁇ m.
- the degree of pulverization was 90%.
- the degree of pulverization was 100%, ie the main inorganic component was used completely pulverized.
- Tablet breaking strength 6 tablets in each case were tested for breaking strength using a TBH 30 tablet breaking strength tester from ERWEKA and the mean value was formed. A hardness of> 400 N is required to avoid damage during transport.
- the powder mixture is granulated in the fluidized bed, then dried at an air temperature of 60 ° C for 8 minutes and finally at an air temperature of 0 ° C within 7 min cooled to 35 ° C.
- the entire fluidized bed granulation process was complete after 1 h 25 min.
- Example 1 the individual powder mixtures were pressed into tablets.
- the tablets had the breaking strengths given in Table 3: Degree of powdering ammonium thiosulfate 90/10 44.4% (not according to the invention) 90% 100% Tablet hardness [N] Tablet hardness [N] Tablet hardness [N] Maltodextrin 229 408 657 Sokalan CP45 305 474 856 Luvitec VPI 55 K18P 368 607 828 Luviskol K90 346 545 754 D-sorbitol 352 541 806 D-mannitol 305 415 759 Sorbitol / xylitol 351 517 751
- Tablet abrasion Five tablets are weighed and placed in the plexiglass drum of an ERWEKA TA-10 tablet abrasion and friability tester. After a rotation time of 5 minutes, the tablets are freed of adhering dust and weighed again. The percentage abrasion is calculated from the weight loss in relation to the initial weight.
- Example 3 Average of 6 tablets Comparative Example 2 Average of 6 tablets After 0 days Tablet thickness [mm] 9.50 9.46 Tablet hardness [N] 509 459 Tablet abrasion [%] 0.50 0.20 After 14 days at 50 ° C Tablet thickness [mm] 9.63 9.57 Tablet hardness [N] 639 672 After 28 days at 50 ° C Tablet thickness [mm] 9.57 9.80 Tablet hardness [N] 661 408
- the cooled melt granules were treated with 67.35 kg of ammonium thiosulfate 90/10, which had previously been ground in a BAUERMEISTER powder mill with turbo insert to a particle size of ⁇ 125 ⁇ m, with 5.03 kg of sodium disulfite, 9.25 kg of sodium sulfite, 410 g Maltodextrin and 1.46 kg of sodium N-lauroyl sarcosinate mixed in a mixer for 10 minutes to a homogeneous mass.
- the final blend obtained was compressed on a rotary tablet press of the FETTE 2090 type to tablets with a diameter of 30 mm and a weight of 10.73 g.
- Example 4 Average of 6 tablets Comparative Example 3 Average of 6 tablets After 0 days Tablet thickness [mm] 9.58 10.08 Tablet hardness [N] 489 828 Tablet abrasion [%] 0.45 0.37 After 7 days at 50 ° C Tablet thickness [mm] 9.68 10.10 Tablet hardness [N] 728 868 After 14 days at 50 ° C Tablet thickness [mm] 9.70 10.11 Tablet hardness [N] 740 818
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Detergent Compositions (AREA)
- Crushing And Pulverization Processes (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
| Pulverisierungsgrad Ammoniumthiosulfat 90/10 | Tablettenhärte | |
| Vergleichsbeispiel 1 | 44,4% | 229 N |
| Beispiel 1a | 90,0% | 408 N |
| Beispiel 1b | 100 % | 657 N |
| Vergleichsbeispiel 2 | 420 N |
| Pulverisierungsgrad Ammoniumthiosulfat 90/10 | |||
| 44,4% (nicht erfindungsgemäß) | 90% | 100% | |
| Tablettenhärte [N] | Tablettenhärte [N] | Tablettenhärte [N] | |
| Maltodextrin | 229 | 408 | 657 |
| Sokalan CP45 | 305 | 474 | 856 |
| Luvitec VPI 55 K18P | 368 | 607 | 828 |
| Luviskol K90 | 346 | 545 | 754 |
| D-Sorbit | 352 | 541 | 806 |
| D-Mannit | 305 | 415 | 759 |
| Sorbit / Xylit | 351 | 517 | 751 |
| Beispiel 3 Mittelwert aus 6 Tabletten | Vergleichsbeispiel 2 Mittelwert aus 6 Tabletten | ||
| Nach 0 Tagen | |||
| Tablettendicke [mm] | 9,50 | 9,46 | |
| Tablettenhärte [N] | 509 | 459 | |
| Tablettenabrieb [%] | 0,50 | 0,20 | |
| Nach 14 Tagen bei 50 °C | |||
| Tablettendicke [mm] | 9,63 | 9,57 | |
| Tablettenhärte [N] | 639 | 672 | |
| Nach 28 Tagen bei 50 °C | |||
| Tablettendicke [mm] | 9,57 | 9,80 | |
| Tablettenhärte [N] | 661 | 408 |
| [kg] | |
| NaH-Fe-DTPA | 58,43 |
| Polyethylenglykol 4000 | 6,57 |
| | |
| Ammoniumthiosulfat 90/10 | 67,35 |
| Natriumdisulfit | 5,03 |
| Natriumsulfit | 9,25 |
| Maltodextrin | 0,41 |
| Natrium-N-Lauroyl-sarkosinat | 1,46 |
| |
| Beispiel 4 Mittelwert aus 6 Tabletten | Vergleichsbeispiel 3 Mittelwert aus 6 Tabletten | ||
| Nach 0 Tagen | |||
| Tablettendicke [mm] | 9,58 | 10,08 | |
| Tablettenhärte [N] | 489 | 828 | |
| Tablettenabrieb [%] | 0,45 | 0,37 | |
| Nach 7 Tagen bei 50 °C | |||
| Tablettendicke [mm] | 9,68 | 10,10 | |
| Tablettenhärte [N] | 728 | 868 | |
| Nach 14 Tagen bei 50 °C | |||
| Tablettendicke [mm] | 9,70 | 10,11 | |
| Tablettenhärte [N] | 740 | 818 |
Claims (10)
- Verfahren zur Herstellung von als Formkörper formulierten fotografischen Prozeßchemikalien, mit den Schritten:a) Zerkleinern von wenigstens 50 Gew.-% des anorganischen Anteils der Einsatzmaterialien auf eine mittlere Korngröße von 125µm oder weniger,b) Direktverpressen der Einsatzmaterialien zu einem Formkörper mit einer Härte von wenigstens 400 N.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens 70 Gew.-%, vorzugsweise wenigstens 80 Gew.-% des anorganischen Anteils der Einsatzmaterialien auf eine mittlere Korngröße von 125µm oder weniger zerkleinert werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Einsatzmaterialien wasserlösliche, fotografisch inerte und/oder fotografisch förderliche Hilfsstoffe enthalten.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Einsatzmaterialien Bindemittel enthalten.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Bindemittelanteil unter 10 Gew.-%, vorzugsweise unter 5 Gew.-%, weiter vorzugsweise unter 2 Gew.-%, weiter vorzugsweise unter 1 Gew.-% liegt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß wenigstens 50 Gew.-%, vorzugsweise wenigstens 80 Gew.-%, weiter vorzugsweise wenigstens 90 Gew.-%, weiter vorzugsweise wenigstens 95 Gew.-% der Einsatzmaterialien anorganische Stoffe sind.
- Verfahren nach einem der Ansprüche 1 bis 6 zur Herstellung eines Formkörpers zum Einsatz in einem Fixier- oder Bleichfixierbad.
- Formkörper, der fotografische Prozeßchemikalien enthält und eine Härte von wenigstens 400 N aufweist, erhältlich durch ein Verfahren mit den folgenden Schritten:a) Zerkleinern von wenigstens 50 Gew.-%, vorzugsweise wenigstens 70 Gew.-%, weiter vorzugsweise wenigstens 80 Gew.-% des anorganischen Anteils der Einsatzmaterialien auf eine mittlere Korngröße von 125µm oder weniger,b) Direktverpressen der Einsatzmatenialien zu einem Formkörper mit einer Härte von wenigstens 400 N.
- Formkörper nach Anspruch 8, dadurch gekennzeichnet, daß er fotografische Prozeßchemikalien zur Herstellung eines Fixier- oder Bleichfixierbades enthält.
- Formkörper nach Anspruch 9, dadurch gekennzeichnet, daß er Ammoniumthiosulfat und/oder Alkalithiosulfat als anorganischen Hauptbestandteil enthält.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853273 | 1998-11-18 | ||
| DE19853273A DE19853273A1 (de) | 1998-11-18 | 1998-11-18 | Verfahren zur Herstellung von als Tablette formulierten fotografischen Prozeßchemikalien |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1003077A2 true EP1003077A2 (de) | 2000-05-24 |
| EP1003077A3 EP1003077A3 (de) | 2000-09-20 |
| EP1003077B1 EP1003077B1 (de) | 2004-01-07 |
Family
ID=7888273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99119025A Expired - Lifetime EP1003077B1 (de) | 1998-11-18 | 1999-09-29 | Verfahren zur Herstellung von als Tablette formulierten fotografischen Prozesschemikalien |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1003077B1 (de) |
| DE (2) | DE19853273A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985001877A1 (en) * | 1983-10-24 | 1985-05-09 | Basf Wyandotte Corporation | A process for preparation spray-dried powders containing a water-soluble vitamin and powders prepared thereby |
| EP0611986A1 (de) * | 1993-02-15 | 1994-08-24 | Konica Corporation | Feststoffzusammensetzung zur photographischen Verarbeitung eines farbphotographischen lichtempfindlichen Silberhalogenidmaterials |
| DE69520079T2 (de) * | 1994-04-19 | 2001-06-21 | Konica Corp., Tokio/Tokyo | Herstellungsverfahren für feste Verarbeitungszusammensetzungen für photographische, lichtempfindliche Silberhalogenidmaterialien |
-
1998
- 1998-11-18 DE DE19853273A patent/DE19853273A1/de not_active Withdrawn
-
1999
- 1999-09-29 EP EP99119025A patent/EP1003077B1/de not_active Expired - Lifetime
- 1999-09-29 DE DE59908242T patent/DE59908242D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1003077A3 (de) | 2000-09-20 |
| DE59908242D1 (de) | 2004-02-12 |
| DE19853273A1 (de) | 2000-05-25 |
| EP1003077B1 (de) | 2004-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69802832T2 (de) | Gepresste nitroglycerintablette und verfahren zu ihrer herstellung | |
| DE60102971T3 (de) | Pulverisiertes Mannit und Verfahren zu deren Herstellung | |
| DE69230051T2 (de) | Co-kristallisierte Sorbit/Xylit-Zusammenstellungen aus der Schmelzphase | |
| EP0552227B2 (de) | Lösungsmittelfreie, oral zu verabreichende pharmazeutische zubereitung mit verzögerter wirkstofffreisetzung und verfahren zu deren herstellung | |
| DE69014691T2 (de) | Verfahren zur Herstellung von Bromocriptin enthaltenden Arzneimittelzubereitungen mit hoher Stabilität und in Beziehung zueinander stehende Produkte. | |
| DE2813146A1 (de) | Tablettieren von mikrokapseln | |
| DE2057239C3 (de) | Verfahren zur Herstellung eines stabilen Antischaummittel | |
| DE69518237T2 (de) | Feste pharmazeutische zubereitung mit (s)-2-(4-isobutylphenyl)propionsäure als wirkstoff und mikrokristalliner cellulose und kolloidalem silica als hilfstoff | |
| DE69400384T2 (de) | Bleichzusammensetzung in Form eines Granulats zum Bleichen von Haaren und Verfahren zur Herstellung | |
| DE3124983A1 (de) | Arzneiformen zur oralen verabreichung | |
| EP1865921B1 (de) | Pharmazeutische zubereitung von n-[5-(aminosulfonyl)-4-methyl-1,3-thiazol-2-yl]-n-methyl-2-[4-(2-pyridinyl)phenyl]acetamid | |
| EP0275468A1 (de) | Clodronat-haltige Arzneimittel und Verfahren zur Herstellung derselben | |
| DE3789258T2 (de) | Multigranuläre Tablette mit verzögerter Freisetzung. | |
| DE68914683T2 (de) | Arzneimittelzusammensetzung für die schnelle verabreichung des aktiven bestandteils, der aus einer festen dispersion und einem oberflächenaktiven mittel besteht. | |
| DE3150557C2 (de) | ||
| EP1003077B1 (de) | Verfahren zur Herstellung von als Tablette formulierten fotografischen Prozesschemikalien | |
| DE69501183T2 (de) | Feste orale pharmazeutische Zubereitung mit Gemfibrozil als aktiver Inhaltsstoff und Verfahren zur Herstellung | |
| DE60309736T2 (de) | Halogeniertes hydantoin und paraffinwachs enthaltende biozide zusammensetzung | |
| DE2050701C3 (de) | Verwendung eines pulverförmigen Celluloseäthers als Hilfsstoff zur Herstellung von leicht zerfallbaren festen Arzneiformen | |
| DE69525620T2 (de) | Verfahren für die herstellung schmelz-granulierte sucralfatzubereitung | |
| EP2451447B1 (de) | Wasserarmes tablettierhilfsmittel und verfahren zu seiner herstellung | |
| DE2424950A1 (de) | Pharmazeutische allopurinol-enthaltende zubereitungen und verfahren zu ihrer herstellung | |
| DE1617638A1 (de) | Tablettenbindemittel | |
| DE3942131C2 (de) | Pharmazeutisches Trimebutin-haltiges Präparat mit verlängerter Wirkstoff-Freisetzung und Verfahren zur Herstellung | |
| DE60024132T2 (de) | Einen histamin h 2 antagonisten enthaltende brausezusammensetzung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): BE DE FR GB IT NL |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 20010308 |
|
| AKX | Designation fees paid |
Free format text: BE DE FR GB IT NL |
|
| 17Q | First examination report despatched |
Effective date: 20021204 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB IT NL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20040107 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 59908242 Country of ref document: DE Date of ref document: 20040212 Kind code of ref document: P |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040415 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20041008 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20070917 Year of fee payment: 9 Ref country code: BE Payment date: 20070921 Year of fee payment: 9 |
|
| BERE | Be: lapsed |
Owner name: *TETENAL PHOTOWERK G.M.B.H. & CO. Effective date: 20080930 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090401 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20090401 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080930 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20120920 Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20121008 Year of fee payment: 14 Ref country code: DE Payment date: 20121126 Year of fee payment: 14 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130929 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59908242 Country of ref document: DE Effective date: 20140401 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140530 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130929 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140401 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130930 |

