EP0334873A1 - Stabilisiertes cadmiumoxid, verfahren zur herstellung und verwendung - Google Patents
Stabilisiertes cadmiumoxid, verfahren zur herstellung und verwendungInfo
- Publication number
- EP0334873A1 EP0334873A1 EP87907922A EP87907922A EP0334873A1 EP 0334873 A1 EP0334873 A1 EP 0334873A1 EP 87907922 A EP87907922 A EP 87907922A EP 87907922 A EP87907922 A EP 87907922A EP 0334873 A1 EP0334873 A1 EP 0334873A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cadmium oxide
- stabilized
- adjuvant
- pulverulent
- cadmium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 title claims abstract description 49
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- 239000002671 adjuvant Substances 0.000 claims abstract description 15
- 239000003381 stabilizer Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 6
- 239000000344 soap Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 239000008139 complexing agent Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229910052793 cadmium Inorganic materials 0.000 description 7
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 231100001245 air toxic agent Toxicity 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229940065285 cadmium compound Drugs 0.000 description 1
- 150000001662 cadmium compounds Chemical class 0.000 description 1
- GWOWVOYJLHSRJJ-UHFFFAOYSA-L cadmium stearate Chemical compound [Cd+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O GWOWVOYJLHSRJJ-UHFFFAOYSA-L 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- -1 fatty acid salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 231100000566 intoxication Toxicity 0.000 description 1
- 230000035987 intoxication Effects 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G11/00—Compounds of cadmium
Definitions
- the present invention relates to cadmium oxide stabilized with a view in particular to its use as a raw material for the manufacture of cadmium soaps (fatty acid salts) which are used as stabilizers and / or lubricants in the field of synthetic resins.
- the invention also extends to the process for the preparation of such a stabilized oxide and to its use.
- Cadmium oxide is generally present at 1 powdery state with a particle size close to the mi ⁇ cron.
- the cadmium oxide powder is not very collapsible and its physical characteristics make it difficult to manipulate the product by placing in a silo, pneumatic travel or by a mechanical device
- Preventive and protective measures involving the use of particularly expensive devices and installations are necessary to meet the requirements imposed by the legislation currently in force.
- cadmium oxide is difficult to store for an extended period, since progressive carbonation takes place, thereby reducing the quality of the raw material used in the manufacture of cadmium stabilizers and lubricants and, optionally, the quality of the stabilizer or lubricant prepared.
- Cadmium oxide also tends to take up moisture and agglomerate during storage, making handling even less easy. These characteristics require storage protected from air and moisture, preferably in perfectly closed drums, the transport of which is particularly expensive and entail high difficulties with regard to handling, in particular when handling. using conveyor systems using dry air or nitrogen.
- the untreated cadmium oxide adheres to the drums in which it is transported and that decontamination is particularly difficult. It also has a low apparent density.
- the toxicity of the product per se, the adhesion mentioned and the difficulty of depollution are such that the users return the drums to the producer rather than destroying them on the spot. Given the low apparent density of the product, this represents significant commercial costs.
- the object of the present invention is to process the cadmium oxide in such a way that it is present in a more stable non-pulverulent form, that is to say significantly less sensitive to the humidity of the air and less toxic to the environment, by providing a starting material equivalent to cadmium oxide for the manufacture of stabilizers and / or lubricants intended for synthetic resins.
- a subsidiary aim of the present invention is to provide cadmium oxide treated so as to obtain a product intended for the manufacture of stabilizers and / or lubricants, which is easy to handle, to convey, to store and to transport, therefore not requiring expensive installations.
- the aim is also, as a complementary measure, to obtain a product which adheres only slightly to the walls of the barrel or other containers intended to contain it.
- the treatment to which the cadmium oxide is subjected must not significantly alter the reactivity of cadmium oxide.
- the product should notably easy- ment disintegrate and disperse in the molten fatty acid, without emission of toxic products.
- the stabilized, non-pulverulent cadmium oxide contains cadium oxide and at least one adjuvant compatible with the use of the stabilizer and / or lubricant and of the synthetic resin for which it is intended. , part of the cadmium oxide and of the adjuvant being able to have reacted at least partially between them.
- the stabilized cadmium oxide in the form of the present invention is in a non-pulverulent form which is easy to handle in conventional storage and conveying installations without it being necessary to make any special arrangements. costly and expensive with regard to environmental pollution. It can also be seen that the stabilized cadmium oxide conforming to the present invention is substantially less sensitive to the uptake of moisture and to carbonation. This property also facilitates its handling and maintains the consistency of Chemical quality It has also been observed that the state in which the stabilized cadmium oxide appears in accordance with the present invention hardly influences the manufacture of the stabilizer and / or lubricant prepared from it. , nor the manufacture of the resin containing a stabilizer and / or lubricant obtained from stabilized cadmium oxide according to the present invention.
- the adjuvant is chosen from among the group consisting of fatty acids and derivatives thereof, in the saturated or unsaturated state, the lubricating agents, complexing agents, antioxidants, plasticizers, metallic soaps and waxes.
- a fatty acid corresponding in preponderant proportions to the fatty acid of the cadmium soap for which the cadmium oxide treated according to the invention is intended.
- stearin will be chosen if the cadmium oxide stabilized according to the invention is intended to produce a cadmium stearate.
- the stabilized cadmium oxide according to the present invention contains at least 5% of adjuvant, at least part of which has optionally reacted with cadmium oxide.
- adjuvant for economic and practical reasons, it is not advantageous to exceed an additive content greater than 50%, although contents of this order are not excluded from the scope of the invention.
- it contains approximately 15% by weight of adjuvant and 85% by weight of cadmium oxide, at least part of the constituents having reacted with each other.
- the cadmium oxide stabilized according to the present invention can be in the form of beads, scales, spaghetti, granules, pearls, pellets, etc.
- the present invention also relates to a process for the preparation of stabilized cadmium oxide according to the present invention.
- the fresh cadmium oxide and at least one adjuvant of the aforementioned type are intimately mixed in the ratio between 5/95 and 50/50, and the mixture thus obtained is subjected to a granulation step known per se.
- These techniques are conventional and mention may be made of extrusion and granulation by friction or other, encapsulation, compacting, rolling and spraying, some of these techniques, involving at least local heating of the mixture and consequently a softening or a fu ⁇ sion of the constituents.
- Example 1 The examples which follow are given for the purpose of illustrating the present invention without any limiting purpose.
- Example 1 The examples which follow are given for the purpose of illustrating the present invention without any limiting purpose.
- the mixture is made homogeneous by stirring for a few minutes and then heated with stirring until a temperature of the mass of 70 to 80 degrees centigrade is reached.
- the mixer is then cooled externally with cold water.
- the material is gradually transformed into low-dust granules which are very suitable for supplying the many well-known machines used in the various granulation techniques mentioned above.
- the product unlike the traditional powder product, does not generate dust and allows appreciably reduce the precautions to avoid intoxication.
- the product according to the invention by its presentation, has good flow properties. It allows "continuous" dosing from supply silos. Any manipulation of the product by pneumatic conveying techniques or other mechanical feeding system is then also permitted. It has no marked tendency to adhere to barrels contrary to untreated cadmium oxide.
- the product according to the invention finally has a very high weight / volume ratio and advantageous in many respects. for example, savings made during transport, when designing storage facilities.
- This product is approximately 3 times denser than conventional cadmium oxide.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
- Detergent Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU86692 | 1986-12-01 | ||
| LU86692A LU86692A1 (fr) | 1986-12-01 | 1986-12-01 | Oxyde de cadmium stabilise et procede pour sa preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0334873A1 true EP0334873A1 (de) | 1989-10-04 |
Family
ID=19730828
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87870164A Withdrawn EP0275854A1 (de) | 1986-12-01 | 1987-12-01 | Stabilisiertes cadmiumoxid, Verfahren zur Herstellung und Verwendung |
| EP87907922A Pending EP0334873A1 (de) | 1986-12-01 | 1987-12-01 | Stabilisiertes cadmiumoxid, verfahren zur herstellung und verwendung |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87870164A Withdrawn EP0275854A1 (de) | 1986-12-01 | 1987-12-01 | Stabilisiertes cadmiumoxid, Verfahren zur Herstellung und Verwendung |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP0275854A1 (de) |
| JP (1) | JPH02502024A (de) |
| KR (1) | KR890700147A (de) |
| AU (1) | AU8330787A (de) |
| LU (1) | LU86692A1 (de) |
| WO (1) | WO1988004308A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1255267A (en) * | 1969-03-10 | 1971-12-01 | Ass Lead Mfg Ltd | Improvements in stabilisers for synthetic resins |
| GB1353320A (en) * | 1970-11-16 | 1974-05-15 | Hardman & Holden Ltd | Process for the production of metal soaps |
| US4173492A (en) * | 1976-03-19 | 1979-11-06 | Pollard Edward T | Method of preparing coated pigment particles and the product produced thereby |
| US4368139A (en) * | 1981-02-17 | 1983-01-11 | Argus Chemical Corporation | Nondusting free-flowing solid particulate polyvalent metal carboxylic acid salt compositions and process for preparing the same |
-
1986
- 1986-12-01 LU LU86692A patent/LU86692A1/fr unknown
-
1987
- 1987-12-01 EP EP87870164A patent/EP0275854A1/de not_active Withdrawn
- 1987-12-01 JP JP63500199A patent/JPH02502024A/ja active Pending
- 1987-12-01 EP EP87907922A patent/EP0334873A1/de active Pending
- 1987-12-01 WO PCT/BE1987/000017 patent/WO1988004308A1/fr not_active Ceased
- 1987-12-01 AU AU83307/87A patent/AU8330787A/en not_active Abandoned
- 1987-12-01 KR KR1019880700902A patent/KR890700147A/ko not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8804308A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| LU86692A1 (fr) | 1988-07-14 |
| AU8330787A (en) | 1988-06-30 |
| KR890700147A (ko) | 1989-03-10 |
| WO1988004308A1 (fr) | 1988-06-16 |
| JPH02502024A (ja) | 1990-07-05 |
| EP0275854A1 (de) | 1988-07-27 |
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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 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 19890613 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| XX | Miscellaneous |
Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 87870164.8/0275854 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 02.11.90. |