GB2029838A - Pigment Preparations for Plastics - Google Patents
Pigment Preparations for Plastics Download PDFInfo
- Publication number
- GB2029838A GB2029838A GB7926175A GB7926175A GB2029838A GB 2029838 A GB2029838 A GB 2029838A GB 7926175 A GB7926175 A GB 7926175A GB 7926175 A GB7926175 A GB 7926175A GB 2029838 A GB2029838 A GB 2029838A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colouring
- colouring agent
- agent preparation
- preparation
- agents
- 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.)
- Withdrawn
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 239000004033 plastic Substances 0.000 title claims abstract description 13
- 229920003023 plastic Polymers 0.000 title claims abstract description 13
- 239000000049 pigment Substances 0.000 title claims description 18
- 238000004040 coloring Methods 0.000 claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000344 soap Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000012876 carrier material Substances 0.000 claims abstract description 12
- 239000004150 EU approved colour Substances 0.000 claims abstract description 9
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 9
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 7
- 239000012188 paraffin wax Substances 0.000 claims abstract description 7
- 239000001993 wax Substances 0.000 claims abstract description 7
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 239000002216 antistatic agent Substances 0.000 claims abstract description 5
- 229920000573 polyethylene Polymers 0.000 claims abstract description 5
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 235000006708 antioxidants Nutrition 0.000 claims description 3
- 239000012963 UV stabilizer Substances 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- GHPYJLCQYMAXGG-WCCKRBBISA-N (2R)-2-amino-3-(2-boronoethylsulfanyl)propanoic acid hydrochloride Chemical compound Cl.N[C@@H](CSCCB(O)O)C(O)=O GHPYJLCQYMAXGG-WCCKRBBISA-N 0.000 description 1
- 125000004421 aryl sulphonamide group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
A colouring agent preparation for colouring plastics materials, consists of colouring agents and a carrier material, which is a metal soap, hard paraffin or polyethylene wax. Antistatic agents, antioxidants and blowing agents may be incorporated in the preparation.
Description
SPECIFICATION
Colouring Agents for Plastic Materials
This invention relates to a colouring agent composition for colouring plastics foils, plastics materials, moulded articles, hollow articles or the like, in bulk, and a method of production thereof.
Colouring agent preparations, pigment preparations, pigment dressings or the like, are used for the colouring of plastics materials.
These are generally in paste form, as powders or granulates. Solid granulated pigment preparations are preferred as so called master batches. The colouring pigments or other agents are bonded on a carrier material which should as far as possible be identical with the plastics material to be coloured, or otherwise should not alter its properties too much in an undesirable manner.
For this reason a large number of different compositions of the master batches or similar colouring agent preparations are known. What is decisive for the amount of colouring agent preparation to be used is the greater or smaller proportion of colouring agent in the preparation.
In order to reach a colour proportion of 5% for example in the end product, up to 30% of colouring agent preparation must be added, depending on the proportion of pigment in the preparation. Various raw materials for the production of plastics materials are used as carrier material or binding agents for the colouring agents, for example organic polymers (DE-OS 2427952), polyolefins (DE-OS 2259978), polyester (DD-PS 105248), resins, formed by mixing formaldehyde with arylsulphonamide (DE
AS 2608864 and DD-PS 128940).
Because of the carrier material, these preparations generally cannot be used universally and are only suitable for special plastics materials or otherwise alter the thermal or mechanical properties, more or less negatively according to the amount used in the plastics material.
The manufacturer of the end products therefore requires a large number of different master batches, even for the same colour according to the differant raw materials.
Colouring agent preparations with a pigment proportion up to 90% by mass are known, where the pigment dispersion consists of pigments coated with fatty acid amide in particle form (DE
OS 221 5871). For this and other preparations (DE-OS 2600211,2536719, 2244777, 2427952) a complex apparatus and devices as well as the considerable energy is needed for production. Moreover, the throughput in relation to production area and unit of time is reiatively low because of the reaction time and/or dissolving time needed. On the other hand, mechanical dispersion methods generally only result in low colour concentrations.
This invention seeks to provide highly concentrated colouring agents from any desired colouring agents in solid form, in which the additives necessary in the after processing can be incorporated at the same time. These colouring agent preparations should be usable for all types of polypropylene, polystyrenes, hard and soft PVC and polyamides PUR and polycarbonates, without altering the properites of the moulding compositions to be coloured in an undesirable manner.
The invention provides colouring agent preparations of high concentration with a carrier material which at the same time fulfils the function of a lubricant and mould release agent in the production of the end products.
A further object of the invention is to render possible the production of the colouring agent preparations according to the invention by means of a simple low-energy requirement process.
According to the invention there is provided a colouring agent preparation for colouring plastics materials, consisting of colouring agents and a carrier material, wherein metal soaps, hard paraffin or wax is used as carrier materials for the colouring agent and the proportion of pigment amounts to 60 to 80% by mass. Antistatic agents, anti-oxidants and blowing agents may be incorporated. The proportion of colouring agent preferably amounts to 40 to 80% by mass.
The metal soaps, preferably Zn-stearate or Alstearate, which have a satisfactory wetting and dispersing capacity, show the best result with regard to colour distribution. The extremely fine powdered structure provides satisfactory prerequisites for a uniform distribution of the colouring agent in the preparation.
The preparations according to the invention will be explained in more detail below with reference to examples.
Example 1
Colouring agent preparation in white
80% white pigments
20% metal soap
Example II
Colouring agent preparation in white
60% white pigments
40% polyethylene wax
Mixtures with 2% and 5% in high pressure and low pressure polyethylene were produced from these preparations I and II and used for coating paper.
The results of the experiment reads: "The quality with regard to the density and distribution in the PE is excellent."
Paper foil produced with this white concentrate in a thickness of 1 5 MY showed an excellent quality without the formation of specks or streaks.
Example Ill
70% colouring agent (organic and/or inorganic)
20% UV stabilizer at the same time 6.5% metal soap } binding agent and meta soap . and pigment carrier 3.5% antistatic agent
If 1.428 kg of this preparation are added to 100 kg,
1.000% colouring agent
0.285% stabilizer
0.093% metal soap are contained in the end product.
Since no additional carrier material is included, this preparation can be used generally.
Example IV
80% pigments, selectively, blue, red or yellow
20% stearate
With an addition of 0.5% of colouring agent concentrate to polypropylene, 0.4% pigments and 0.190% stearate are contained in the end product. The yarn spools prepared with this, which are exposed to heavy loading and otherwise crack at the flow seams, no longer crack after colouring with the concentrate given.
Example V
Recipe with blowing agents
50% colouring agent (organic and/or inorganic)
30% hard paraffin, metal soap or wax
20% blowing agent
In this case the proportion of blowing agents and pigments corresponds precisely to the amount needed to achieve the desired colouring effect required in the end product.
In the production of these colouring agent preparations it has been found that the mixing of the colouring agent components and hard paraffin, metal soap or wax is of significance in determining the quality of the preparation.
The method of production thus developed is characterised by the following features:
1. The metal soap or hard paraffin is introduced into a rapid mixer while in the rest position and the lid fastened down.
2. After starting the mixer the colouring agents are fed in small quantities through a sluice into the ensuing powder vortex. This causes the colour particles to be well rinsed by the pulverulent carrier particles.
3. The mixing process is carried out untilthe mixture has a consistency enabling it to flow without mechanical aids.
4. The mixed material is heated in an extruder without building up pressure to the melting point of the particular carrier material, whereby the carrier particles melt between the colour particles, encapsulate these and prevent the formation of an agglomerate.
5. The molten, hot, paste-like colouring agent preparation flows out of the extruder and onto a conveyor belt where it cools and drops through a funnel into a friction mill.
6. After the grinding process the ground material is separated into three different grain sizes, which can be used for specific colourings or shades of colouring.
The advantages of the solution according to the invention is that it is possible, with the same effectiveness, to reduce the material used by the manufacturer of the colouring agent preparation and so to save transport costs, space and electrical energy.
The pigment distribution is particularly good in the colour preparations produced in accordance with the proposed compositions, which has an effect on higher density and improved colouring effect in the coloured moulding compositions.
With less colouring agent added to the moulding compositions when colouring with the colouring agent preparations according to the invention, the same density and the same colouring effect as before is achieved and so is a saving in colouring agent.
A further advantage consists in that these preparations render possible, for the first time, use in foils, paper foils and polypropylene.
Hitherto, the colouring firms had to use the appropriate master batches for each kind of moulding composition (plastics material) used.
Moulding compositions of polyethylene, polypropylene, polystyrene, polyvinyich loride, polyamides and polycarbonates can be coloured with the above preparations. This means a simplification in storage for these firms.
It is a further advantage that through the use of lower temperatures in the production of the preparations, the necessary additives such as antistatic agents, antioxidants and blowing agents can be incorporated, as a result of which additional operations of later admixture during further processing are eliminated. A further advantage consists in that the addition of lubricants to improve the flow capacity of the moulding compositions in the screw press or blowing installation during further processing is eliminated.
Claims (7)
1. A colouring agent preparation for colouring plastics materials, consisting of colouring agents and a carrier material. wherein metal soaps, hard paraffin or wax is used as carrier materials for the colouring agent and the proportion of pigment amounts to 60 to 80% by mass.
2. A colouring agent preparation as claimed in
Claim 1, wherein the composition consists of:
60 to 80% colouring agent and
20 to 40% metal soap and/or polyethylene
wax.
3. A colouring agent preparation as claimed in
Claim 1, wherein the composition is:
40 to 70% colouring agent (organic and/or
inorganic)
6.5 to 40% metal soap and/or hard paraffin
20% UV stabilizer and/or blowing agent and
selectively
3.5% antistatic agent and/or anti-oxidant.
4. A colouring agent preparation as claimed in any one of Claims 1 to 4, wherein Zn-stearate or
Al-stearate is used as metal soap.
5. A method of producing a colouring agent preparation as claimed in any one of Claims 1 to 4, wherein the carrier material is poured into a stationary high-speed mixer and with the mixer running the colouring agents are added gradually, and the mixed material which is capable of flowing is melted in an extruder without pressure and the composition, after cooling on a conveyor belt, comminuted in a friction mill.
6. A colouring agent preparation as herein described and exemplified.
7. A method for manufacture of a colouring agent preparation carried out substantially as herein described and exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD20698378A DD137843A1 (en) | 1978-07-28 | 1978-07-28 | EXPERIMENTAL PREPARATIONS FOR PLASTIC IMPLEMENTATION AND MANUFACTURING METHOD THEREFOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2029838A true GB2029838A (en) | 1980-03-26 |
Family
ID=5513799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7926175A Withdrawn GB2029838A (en) | 1978-07-28 | 1979-07-27 | Pigment Preparations for Plastics |
Country Status (3)
| Country | Link |
|---|---|
| DD (1) | DD137843A1 (en) |
| DE (1) | DE2925013A1 (en) |
| GB (1) | GB2029838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2184735A (en) * | 1985-12-14 | 1987-07-01 | Bip Chemicals Ltd | Thermoplastic moulding compositions |
| EP0628592A1 (en) * | 1993-06-11 | 1994-12-14 | FELIX SCHOELLER JR. FOTO- UND SPEZIALPAPIERE GmbH & Co. KG. | Premixture, masterbatch or coating compound for the preparation of photographic layers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006039913A1 (en) * | 2006-08-12 | 2008-02-14 | Clariant International Limited | Highly filled colorant composition for coloring and modifying olefinic and non-olefinic plastics |
-
1978
- 1978-07-28 DD DD20698378A patent/DD137843A1/en unknown
-
1979
- 1979-06-21 DE DE19792925013 patent/DE2925013A1/en not_active Withdrawn
- 1979-07-27 GB GB7926175A patent/GB2029838A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2184735A (en) * | 1985-12-14 | 1987-07-01 | Bip Chemicals Ltd | Thermoplastic moulding compositions |
| GB2184735B (en) * | 1985-12-14 | 1989-10-11 | Bip Chemicals Ltd | Thermoplastic moulding compositions |
| EP0628592A1 (en) * | 1993-06-11 | 1994-12-14 | FELIX SCHOELLER JR. FOTO- UND SPEZIALPAPIERE GmbH & Co. KG. | Premixture, masterbatch or coating compound for the preparation of photographic layers |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2925013A1 (en) | 1980-02-07 |
| DD137843A1 (en) | 1979-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |