GB1567734A - Process for the preparation of nondusting dyestuff particles - Google Patents
Process for the preparation of nondusting dyestuff particles Download PDFInfo
- Publication number
- GB1567734A GB1567734A GB14797/78A GB1479778A GB1567734A GB 1567734 A GB1567734 A GB 1567734A GB 14797/78 A GB14797/78 A GB 14797/78A GB 1479778 A GB1479778 A GB 1479778A GB 1567734 A GB1567734 A GB 1567734A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyestuff
- particles
- fluidized bed
- solution
- solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002245 particle Substances 0.000 title claims abstract description 39
- 239000000975 dye Substances 0.000 title claims description 63
- 238000000034 method Methods 0.000 title claims description 46
- 238000002360 preparation method Methods 0.000 title description 4
- 238000010410 dusting Methods 0.000 claims abstract description 7
- 238000005299 abrasion Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 25
- 239000002904 solvent Substances 0.000 claims description 19
- 238000005243 fluidization Methods 0.000 claims description 13
- 239000004606 Fillers/Extenders Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 239000011230 binding agent Substances 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 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000009472 formulation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000012467 final product Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 1
- 101000619542 Homo sapiens E3 ubiquitin-protein ligase parkin Proteins 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 102000045222 parkin Human genes 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0092—Dyes in solid form
- C09B67/0095—Process features in the making of granulates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Coloring (AREA)
- Glanulating (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Abrasion-resistant, non-dusting, water-soluble dye particles are prepared by spraying dye solution, which optionally contains formulation auxiliaries, onto dye particles in a fluidised bed. The stream of gas required to create the fluidised bed must be able to take up moisture.
Description
(54) PROCESS FOR THE PREPARATION OF NONDUSTING
DYESTUFF PARTICLES
(71) We, HOECHST AKTIEN
GESELLSCHAFT, a body corporate organised according to the laws of the Federal
Republic of Germany, of 6230 Frankfurt (Main) SO, Postfach 80 03 20, Germany, do hereby declare the invention for which we pray that a paUt may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following Stateneat:- The pxst invention relates to the pre parkin of noadusting dyestuff particles.
It is known that water-soluble dyestuffs, especially reactive dyestuffs, may be obtained in slid form from concentrated solutions thereof using spray chambers. The dyestuff powder obtained by these processes is always very fine, has a correspondingly low bulk den sity and is highly dusting. Although it is desirable to obtain fine grains, which permit a high rate of solution and high working speed, dyestuffs and dyestuff preparations which are dust-free or substantially dust-free are required to prevent troubles and injuries to the service staff and contamination of the production rooms and of the prepared products.
It is known to treat prepared dyestuff powders subsequently by adding antidust agents, for example oils or various other additives, or combinations thereof. This subsequent addition of an antidust agent has the disadvantage that it involves high costs and also that a number of additional inconvenient problems may result depending on the particular antidust agents used. The problem of the low bulk (powder) density does not change in this process.
The present invention provides a process for the preparation of abrasion resistant (as hereinafter defined), nondusting dyestuff partides, which comprises spraying a solvent for tbe dyestuff or a solution of the dyestuff into or orito a bed comprising particles of the dye stuff {fluidized by a gas which is capable of removing solvent from the bed, and subsequently separating the nondusting particles.
According to the process of the invention the dyestuff is preferably a water-soluble dye stuff, especially a reactive dyestuff, and there is sprayed onto or into the fluidized bed water or an aqueous dyestuff solution. The gas used for fluidizing the bed may be any suitable inert gas depending on the dyestuff and especially on the solvent. When water or an aqueous dyestuff solution is to be sprayed the fluidizing gas is generally air.
The term " abrasion-resistant" means that the dyestuff particles are not reduced in size under normal conditions, for example storage, transportation, handling or mixing conditions.
The conditions for fluidization of the bed comprising particles of the dyestuff are according to known principles for fluidized beds. It is preferred that the bed comprises particles of different sizes within the accepted size range for fluidization.
The process according to the invention may be carried out discontinuously or continuously.
In a discontinuous process, dyestuffs particles which may be fluidized and which are, or include, particles which would give dusting may be put into a suitable apparatus to form the fluidized bed. The bed is then treated with solvent or dyestuff solution according to the invention to increase the particle size. The particles are then removed from the apparatus and may be graded for size. Particles which are larger than required may be comminuted and, if necessary, subjected to further treatment, and undersize particles may be returned to the apparatus for further treatment.
A continuously operating process according to the invention is generally carried out by starting with an mitial bed of particles, which may all be of such a size that they are nondusting, or may be as described above. The or further dyestuff particles to be treated are then added to the fluidized bed continuously or at intervals, the bed being treated with solvent or dyestuff solution as above. Treated particles may be removed in usual manner continuously or at intervals from the fluidized bed, and may be graded as described above.
Recycled particles may be returned to the fluidized bed directly or with the basic feed of particles to be treated.
The solvent or dyestuff solution may be sprayed from the top (preferred), from the bottom and/or from the side. The dyestuff solution may contain an extender. The term dyestuff solution " means a solution of solids
(i.e. dyestuff, extender, additives (for example
tensides or binders) and compositions thereof)
dissolved in an amount up to the degree of saturation. Suitable extenders for aqueous solutions are inter alia NaCI or Na2SO4.
It is, moreover, possible to spray solvent vapour onto the fluidized bed. Optionally a binder, for example Manutex (Trade Mark) or Tylose (Trade Mark) may be added to the solvent. The residence time of the dyestuff solution or of the diluted dyestuff solution in the fluidized bed, and a possible temperature stress involved therein, may be reduced and energy saved by submitting the solution to a preliminary concentration process in a suitable apparatus. The number of spray nozzles used in a suitable apparatus depends on the dimension of the fluidized bed and on the quantity passed through. The arrangement of the nozzles, either at the top, at the bottom and/or at the side, has no essential influence on the granulation process. Advantageously the spray nozzles are arranged at the top of the apparatus employed.
In continuous operation of the process of the invention, the feed of the dyestuff powder, granulate or mixture of powder and granulate to be treated may suitably be passed through the spray cone of the solvent or dyestuff solution. The agglomerates are discharged in known manner via suitable devices as indicated above, for example rotary valves. The dyestuff powder entrained by the exhaust air is usually retained by self-cleaning dry filters and recycled to the fluidized bed directly or together with the material to be treated.
An apparatus in which the process of the invention may be carried out will now be described, by way of example only, with reference to the accompanying drawing, which shows an elevation of the apparatus, partly in section.
The fluidization apparatus has a fluidization chamber casing 1, through which pass, into the chamber, a screw-feed dosing device 5, by which dyestuff particles to form the fluidized bed and recycled undersize or comminuted oversize particles may be introduced, and a spray nozzle 2 for introduction of the solvent or dyestuff solution. Hot air for fluidization is introduced into the fluidization chamber by the gas inlet 4 via the perforated plate 6, and, charged with solvent, leaves the fluidization apparatus via a port 7. A discharge pipe 8 for the final product opens into the fluidization chamber at a level immediately over the perforated plate. The pipe 8 is equipped with a rotary valve 3.
The present invention is illustrated by the tests shown in the following Table.
Test I (discontinuous) (a) 2 (discontinuous) (b) 3 (continuous) 4 (continuous) (R) (R) (R) (R) Remazol Remazol Remazol Ramazol Brilliant Blue Black B Black B Golden Yellow 61200 Reactive 20505 Reactive 20505 Reactive 18852 Reactive Dyestuff Blue 19 Black 5 Black 5 Yellow 17 Fluidization area m2 0.4 0.4 0.4 0.4 Rate of flow of fluidizing air m3/h(c) 330 1200 350 360 Temperature of fluidizing air C 80 135 90 150 Fluidized bed temperature C 35 65 35 40 Throughput of dyestuff kg/h - - 40 36 Throughput of water kg/h 10 - 6 Throughput of dyestuff-solution (d) kg/h - 50 - 11 Amount of dyestuff in initial fluidized bed kg 83 30 10 10 Compacted bulk density of starting material g/l - - - 421 Non-compacted bulk density of starting material g/l 750 700 700 Compacted bulk density of final product g/l - - - 403 Non-compacted bulk density of final product g/l 659 990 315 Particle size of starting material m 80% < 20 80% < 20 80% 20 80% < 20 Particle size of final product m 97% > 200 100% > 250 80% 150 52% 200
Notes (a) process time approx 1 hour
(b) process time approx 6 minutes (c) calculated at 1 atmosphere pressure, OOC (d) concentration-20% by weight
WHAT WE CLAIM IS:
1. A process for preparing abrasion resistant (as hereinafter defined), non-dusting particles of a dyestuff, which comprises spraying a sol- vent for the dyestuff or a solution of the dyestuff into or onto a bed comprising particles of the dyestuff fluidized by a gas which is capable of removing the solvent from the fluidized bed, and subsequently separating the non-dusting particles.
2. A process as claimed in claim 1, wherein the dyestuff is water soluble and water or an aqueous solution of the dyestuff is sprayed onto or into the fluidized bed.
3. A process as claimed in claim 2, wherein the dyestuff is a water-soluble reactive dyestuff.
4. A process as claimed in any one of claims 1 to 3, wherein the solvent or dyestuff solution is sprayed onto the fluidized bed from above.
5. A process as claimed in any one of claims 1 to 4, wherein solvent is sprayed in vapour form.
6. A process as claimed in any one of claims 1 to 4, wherein a dyestuff solution contains an extender.
7. A process as claimed in claim 6, wherein the extender is sodium chloride or sodium sulfate.
8. A process as claimed in any one of claims 1 to 7, wherein a dyestuff solution contains a binder.
9. A process as claimed in any one of claims 1 to 8, wherein the fluidization gas is hot.
10. A process as claimed in any one of claims 1 to 9, wherein the fluidization gas is air.
11. A process as claimed in any one of claims 1 to 10, which is carried out in a continuous manner and wherein, during the process, dyestuff particles to be treated are added to the fluidized bed and treated dyestuff particles are removed from the fluidized bed.
12. A process as claimed in claim 11, wherein the removed dyestuff particles are subsequently graded and undersize and/or comminuted oversize particles are recycled to the fluidized bed.
13. A process as claimed in claim 1, conducted substantially as described herein.
14. A process as claimed in claim 1, conducted in an apparatus substantially as des cribbed herein with reference to, and as illus
trated in, the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (14)
1. A process for preparing abrasion resistant (as hereinafter defined), non-dusting particles of a dyestuff, which comprises spraying a sol- vent for the dyestuff or a solution of the dyestuff into or onto a bed comprising particles of the dyestuff fluidized by a gas which is capable of removing the solvent from the fluidized bed, and subsequently separating the non-dusting particles.
2. A process as claimed in claim 1, wherein the dyestuff is water soluble and water or an aqueous solution of the dyestuff is sprayed onto or into the fluidized bed.
3. A process as claimed in claim 2, wherein the dyestuff is a water-soluble reactive dyestuff.
4. A process as claimed in any one of claims 1 to 3, wherein the solvent or dyestuff solution is sprayed onto the fluidized bed from above.
5. A process as claimed in any one of claims 1 to 4, wherein solvent is sprayed in vapour form.
6. A process as claimed in any one of claims 1 to 4, wherein a dyestuff solution contains an extender.
7. A process as claimed in claim 6, wherein the extender is sodium chloride or sodium sulfate.
8. A process as claimed in any one of claims 1 to 7, wherein a dyestuff solution contains a binder.
9. A process as claimed in any one of claims 1 to 8, wherein the fluidization gas is hot.
10. A process as claimed in any one of claims 1 to 9, wherein the fluidization gas is air.
11. A process as claimed in any one of claims 1 to 10, which is carried out in a continuous manner and wherein, during the process, dyestuff particles to be treated are added to the fluidized bed and treated dyestuff particles are removed from the fluidized bed.
12. A process as claimed in claim 11, wherein the removed dyestuff particles are subsequently graded and undersize and/or comminuted oversize particles are recycled to the fluidized bed.
13. A process as claimed in claim 1, conducted substantially as described herein.
14. A process as claimed in claim 1, conducted in an apparatus substantially as des cribbed herein with reference to, and as illus
trated in, the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2716478A DE2716478C2 (en) | 1977-04-14 | 1977-04-14 | Process for producing abrasion-resistant, non-dusting, water-soluble dye particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1567734A true GB1567734A (en) | 1980-05-21 |
Family
ID=6006263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14797/78A Expired GB1567734A (en) | 1977-04-14 | 1978-04-14 | Process for the preparation of nondusting dyestuff particles |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS53128634A (en) |
| AR (1) | AR219741A1 (en) |
| BR (1) | BR7802311A (en) |
| CH (1) | CH633031A5 (en) |
| DE (1) | DE2716478C2 (en) |
| FR (1) | FR2387270A1 (en) |
| GB (1) | GB1567734A (en) |
| IN (1) | IN148409B (en) |
| IT (1) | IT1095579B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444401A1 (en) * | 1983-12-12 | 1985-06-20 | SGS-ATES Componenti Elettronici S.p.A., Catania | DIGITAL PHASE SYNCHRONIZER FOR SIGNALS OF THE SAME FREQUENCY, ESPECIALLY FOR SIGNAL DEMODULATORS |
| US4560747A (en) * | 1979-10-30 | 1985-12-24 | Ciba Geigy Corporation | Process for producing granulates of water-soluble dyes by fluidized bed granulation |
| US4846409A (en) * | 1986-10-17 | 1989-07-11 | Bayer Aktiengesellschaft | Process for the preparation of granules |
| US6712862B1 (en) | 1997-07-21 | 2004-03-30 | Clariant Finance (Bvi) Limited | Granular compacts, their production and use |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH635862A5 (en) * | 1977-10-15 | 1983-04-29 | Ciba Geigy Ag | Process for granulation of pigments. |
| EP0024654A1 (en) * | 1979-08-22 | 1981-03-11 | Ciba-Geigy Ag | Granules of fibre-reactive dyestuffs and process for their preparation |
| EP0024655A3 (en) * | 1979-08-22 | 1981-03-25 | Ciba-Geigy Ag | Granules of metal complex dyestuffs and process for their preparation |
| FR2468633A1 (en) * | 1979-09-21 | 1981-05-08 | Ugine Kuhlmann | Non-dusty azo metal complex dye granules prepn. - by pulverising aq. dye paste above or inside fluidised bed |
| CH658667A5 (en) * | 1984-05-04 | 1986-11-28 | Ciba Geigy Ag | METHOD FOR PRODUCING DYE GRANULES. |
| JP3092152B2 (en) * | 1990-08-28 | 2000-09-25 | 住友化学工業株式会社 | Granular reactive dye composition and method for dyeing or printing cellulosic fiber material using the same |
| US5143671A (en) * | 1990-10-31 | 1992-09-01 | Eastman Kodak Company | Fluidized bed process for treating pigments |
| JP4724617B2 (en) * | 2006-07-25 | 2011-07-13 | 本田技研工業株式会社 | Parking brake device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1254730A (en) * | 1969-02-13 | 1971-11-24 | Vyzk Ustav Organ Syntez | A process for isolating reactive dyestuffs, or reactive optical brightening agents. |
| GB1373167A (en) * | 1972-01-26 | 1974-11-06 | Ici Ltd | Manufacture of dyestuff powder |
-
1977
- 1977-04-14 DE DE2716478A patent/DE2716478C2/en not_active Expired
-
1978
- 1978-04-07 IN IN381/CAL/78A patent/IN148409B/en unknown
- 1978-04-11 CH CH388278A patent/CH633031A5/en not_active IP Right Cessation
- 1978-04-12 IT IT22245/78A patent/IT1095579B/en active
- 1978-04-13 AR AR271768A patent/AR219741A1/en active
- 1978-04-13 JP JP4272078A patent/JPS53128634A/en active Granted
- 1978-04-13 BR BR7802311A patent/BR7802311A/en unknown
- 1978-04-14 GB GB14797/78A patent/GB1567734A/en not_active Expired
- 1978-04-14 FR FR7811032A patent/FR2387270A1/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560747A (en) * | 1979-10-30 | 1985-12-24 | Ciba Geigy Corporation | Process for producing granulates of water-soluble dyes by fluidized bed granulation |
| DE3444401A1 (en) * | 1983-12-12 | 1985-06-20 | SGS-ATES Componenti Elettronici S.p.A., Catania | DIGITAL PHASE SYNCHRONIZER FOR SIGNALS OF THE SAME FREQUENCY, ESPECIALLY FOR SIGNAL DEMODULATORS |
| US4846409A (en) * | 1986-10-17 | 1989-07-11 | Bayer Aktiengesellschaft | Process for the preparation of granules |
| US6712862B1 (en) | 1997-07-21 | 2004-03-30 | Clariant Finance (Bvi) Limited | Granular compacts, their production and use |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2716478A1 (en) | 1978-10-26 |
| JPS53128634A (en) | 1978-11-09 |
| IT1095579B (en) | 1985-08-10 |
| FR2387270A1 (en) | 1978-11-10 |
| IN148409B (en) | 1981-02-14 |
| BR7802311A (en) | 1978-11-28 |
| AR219741A1 (en) | 1980-09-15 |
| IT7822245A0 (en) | 1978-04-12 |
| JPS6143389B2 (en) | 1986-09-27 |
| DE2716478C2 (en) | 1987-01-08 |
| CH633031A5 (en) | 1982-11-15 |
| FR2387270B1 (en) | 1985-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930414 |