WO1997002324A1 - Metodo para la estabilizacion cromatica de pigmentos para polimeros, procedimiento para la coloracion de polimeros, y pigmentos obtenidos por dicho metodo - Google Patents
Metodo para la estabilizacion cromatica de pigmentos para polimeros, procedimiento para la coloracion de polimeros, y pigmentos obtenidos por dicho metodo Download PDFInfo
- Publication number
- WO1997002324A1 WO1997002324A1 PCT/ES1995/000147 ES9500147W WO9702324A1 WO 1997002324 A1 WO1997002324 A1 WO 1997002324A1 ES 9500147 W ES9500147 W ES 9500147W WO 9702324 A1 WO9702324 A1 WO 9702324A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pigments
- orbitals
- pigment
- electrons
- polymer
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
Definitions
- the invention relates to a process for the coloration of polymers, a method for chromatically stabilizing conventional itself pigments containing metallic elements, as well as chromatically stabilized pigments for the coloration of polymers.
- plastic materials based on polymers such as, for example, PVC, P.E. the P.E.T. and the P.M.M.
- PVC polyvinyl styrene
- P.E.T. polyvinyl styrene
- P.M.M polyvinyl styrene
- furniture, enclosures, profiles, construction materials such as doors, window frames, carpentry boards, pipes, grilles, as well as covers for electric cables, housings for all types of appliances, containers and packaging can be cited, hoses, sleeves, household and household items, mechanical components, and many more.
- Such polymers are distinguished, in general, by their low price, their resistance to environmental degrading agents, their easy formability, their low specific gravity, their impermeability etc.
- the different colors are basically achieved according to the chemical element that has been used in its preparation.
- chromium or cadmium in yellow pigments, cobalt in blue pigments, copper in green pigments, iron in red pigments, etc. can be cited.
- a common characteristic of the vast majority of these pigments is that they have a relatively low molecular weight, so their incorporation into materials of similar molecular weights usually produces a satisfactory coloration.
- the material to be colored had a very high molecular weight, it was not possible to achieve a homogeneous dispersion of the pigment in the material, resulting in the formation of the interfaces and the consequent adverse effects specified above.
- pigments comprise a metallic element, for example barium, cadmium, cobalt, copper, chromium, iron etc. transported in a polymeric carrier ("carrier") of eg PET, PP or PE, as well as antioxidants, stabilizers and lubricants.
- carrier eg PET, PP or PE
- antioxidants, stabilizers and lubricants e.g antioxidants, stabilizers and lubricants.
- Masterbatches typically used in the coloring of polymers are the so-called FERROCOLOR of FERRO EMANEL and CROMOFIX of INDUSTRIAS QU ⁇ MICAS AUXILIARES DEL PL ⁇ STICO, SA
- the typical composition of "masterbatches” of the type mentioned above are (in% by weight) 44-49% of a metallic element, 34-40% of a polymer, 4-7% of an antioxidant as well as stabilizers and lubricants. Masterbatches are usually incorporated in an amount of 3 to 10% by weight in the pellet of the polymer to be colored.
- the basic polymeric pellets, apart from the "masterbatch” usually comprise up to about 50% by weight of a polymer as well as antioxidants, lubricants, stabilizers etc.
- the object of the present invention is to solve the aforementioned drawbacks in the coloration of polymers according to the state of the art, by chromatically stabilized pigments that are distributed homogeneously in the polymers to be colored.
- the object of the invention is essentially achieved by pretreatment of pigments containing metallic elements, in themselves conventional, according to a method according to which a conventional pigment itself is subjected to photonic shots of a light of a super-short wavelength. determining the energy applicable to photonic shots based on the difference of the known energy potentials between the inner and outer orbitals of the metallic elements present in the pigment, adjusting the wavelength (X) of the super-short wavelength light that it is applied, to a value of a constant resulting from the division of the speed of light
- This displacement it can be achieved, for example, by using radiators or 50-N and 65 BL.K black light tubes. of WESTINGHOUSE, RS 750 and RS-45K of PHILIPS and PTL-60L of OSRAM, that is to say by means of a transformation in itself conventional for other applications of the "black” light that usually has a wavelength of around 1.7 x 10 "9 cm (160 to 190 nm) between square peaks, generated and driven outside the radiator.
- the time and energy required for exposure to the black light of the pigment is calculated based on the molecular weight (n) of a pigment itself, the known molecular weight of the polymer (N), the known atomic structure in terms of number of electrons and valence of the metallic element contained in the pigment.
- the treated metallic element has, in its outer and inner orbitals, a modified distribution of its electrons, such that the outer orbitals (E) have additional electrons from displacement from the inner orbitals (e), in a number inversely proportional to the value of the molecular weight of the polymer.
- the light to which the pigments are exposed has a wavelength between 160 and 190 nanometers, commonly called "black" light.
- it is emitted in pulses and modulated to produce square waves so that it can penetrate through the orbitals of the metallic elements and through the layers formed by the pigments.
- the black light exposure of the pigments to be treated is 0.08 to 0.12 seconds and preferably 0.1 seconds for every 10 microns thick of the pigments to be treated.
- the distance (D) which allows variations of plus or minus 20% between the black light source and the surface of the pigment layer, is calculated based on the equation
- D L xk where L is equal to the wavelength of light, and k is a constant equal to (2x45) xlO 6 m.
- the constant k is determined as a function of the harmonics of the wavelength multiplied by 10 "6, that is, by the resonance or amplification factor, of the wavelength.
- the emission power of the black light source (in W), is calculated based on the temperature lifting capacity, according to the black panel standard in degrees celsius, starting from a range of working temperatures in the treatment of pigments between 20 and 33 ° C, preferably between 25 and 28 ° C.
- the black panel is a well-known international measurement standard for temperature control of a 250 x 100 x 1 mm panel in accordance with the ASTM gray scale on which the energy source to be tested is projected.
- the exposure of the pigments to black light is carried out in a tunnel through which a conveyor belt is passed in which a layer of pigments of a thickness of 2-3 cm has been deposited, the speed being calculated transport (V) based on the formula
- V e x 0.10 m / sec where e is equal to a multiple of 0.10 m. Speeds up to 20% higher or lower are also tolerable.
- the factor e is determined by the fact that a speed of passage of the pigment that allows sufficient "photosensitization" of all the exposed pigment must be found. It should be taken into account in this regard that, basically, excessive exposure is not harmful but that lower exposure may result in insufficient modification of the pigment's outer orbitals.
- the pigment can be exposed to black light, starting from a thickness of the pigment layer of 0.025 m and a width of 0.31 m and a length of the black light source of 0.65 m, in which case each longitudinal strip of 0.001 m of pigment must be exposed to black light for 1 second.
- a suitable installation for the treatment of the pigment is, for example, a tunnel protected in such a way that it essentially does not emit black light or suffer from imitations of ambient light inside, consisting of a rectangular body of 5500 x 400 x 450 mm through which a Conveyor belt at a speed of 300 to 430 m / h, fed with untreated pigment at one end by a dosing hopper capable of depositing a layer of 2 to 3 cm thick pigment.
- the installation also includes six black light emitting tubes of 160 to 190 nm and distributed in successive pairs equidistant longitudinally from the tunnel. DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
- a layer of a "masterbatch" pigment of the CROMOFIX series of INDUSTRIAS QU ⁇ MICAS AUXILIARES DEL PL ⁇ STICO, SA is continuously disposed in a sufficient quantity of an essentially uniform thickness of 25 mm.
- the pigment already treated in conventional plastic bags is collected.
- Example 2 The pigment introduced in the tunnel of example 1 is the CROMOFIX pigment Ref. Master 1436 (Series 0) suitable for coloring in yellow Ge-04 of PVC pellets.
- the metallic element present in said pigment at approximately 45% by weight is cadmium.
- Example 3 The pigment introduced in the tunnel of example 1 is the CROMOFIX pigment Ref. Master 3003 (Series 0) suitable for coloring in red Ro-01 PVC pellets.
- the metallic element present in said pigment at approximately 48% by weight is iron.
- Example 4 A rigid PVC-based profile of conventional composition, yellow in color, with a content of approximately 5% by weight of the pigment of the Example 2 treated according to Example 1, of an approximate length of 30 cm and a width of about 8 cm.
- the sample was subjected to the determination of the linear expansion coefficient according to UNE 53126-79.
- the resulting coefficient was 7.6xl0 "5 .
- Example 5 A rigid PVC-based profile of conventional composition, of red color with a content of approximately 5% by weight of the pigment of Example 4 treated according to Example 1, of an approximate length of 30 cm and of a width of about 8 cm.
- the sample was subjected to the determination of the linear expansion coefficient according to UNE 53126-79.
- the resulting coefficient was 7.3xl0 "5 .
- Example 6 The profile of Example 3 was cut longitudinally and one of the halves was subjected to accelerated aging in an XENOTEST-150 apparatus, for successive periods 24, 48, 72 and 96 hours, while the other half was kept in absolute darkness at 23 ° C and 50% relative humidity to act as a standard sample. After each period, a visual comparison of the exposed samples with the standard sample was made, and no difference could be seen between the colors until 72 hours and a clarification barely noticeable at 96 hours.
- Example 7 The profile of the example was cut longitudinally
- Example 8 CROMOFIX "masterbatch" pigments Ref. Master 6004 (Series 0, for green color Ve-04) and Ref. Master 7436 were treated according to the specifications of example 1
- the treated pigments were incorporated in a proportion of 5% by weight, respectively in conventional PVC pellets, and prepared, by extrusion Conventional, PVC-based slats in a conventional way 1 m long, 3 mm thick and 8 cm wide.
- the ATLAS camera was programmed to reproduce repetitive cycles of degradation, being recorded during these cycles both the amount of radiation emitted and the number of hours of light and dark elapsed, according to the following specifications:
- a Dr. Lange microcolorimeter was used, capable of performing color measurements in three coordinates, namely green-red (a *), blue-yellow (b *) and black-white (L *), as well as their differences from the reference standard.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU39846/95A AU3984695A (en) | 1995-07-04 | 1995-12-07 | Method for the chromatic stabilization of pigments for polymers, process for the coloration of polymers, and pigments obtained by such method |
EP95938472A EP0795587A1 (en) | 1995-07-04 | 1995-12-07 | Method for the chromatic stabilization of pigments for polymers, process for the coloration of polymers, and pigments obtained by such method |
MX9701654A MX9701654A (es) | 1995-07-04 | 1995-12-07 | Metodo para la estabilizacion cromatica de pigmentos para polimeros, procedimiento para la coloracion de polimeros, y pigmentos obtenidos por dicho metodo. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP9501335 | 1995-07-04 | ||
ES9501335 | 1995-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997002324A1 true WO1997002324A1 (es) | 1997-01-23 |
Family
ID=8290935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1995/000147 WO1997002324A1 (es) | 1995-07-04 | 1995-12-07 | Metodo para la estabilizacion cromatica de pigmentos para polimeros, procedimiento para la coloracion de polimeros, y pigmentos obtenidos por dicho metodo |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0795587A1 (es) |
AU (1) | AU3984695A (es) |
CA (1) | CA2199122A1 (es) |
MX (1) | MX9701654A (es) |
WO (1) | WO1997002324A1 (es) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU829645A1 (ru) * | 1979-08-15 | 1981-05-15 | Предприятие П/Я Г-4855 | Способ модифицировани пигментнойдВуОКиСи ТиТАНА |
SU939503A1 (ru) * | 1980-04-21 | 1982-06-30 | Ярославское Производственное Объединение "Лакокраска" | Способ модифицировани неорганических пигментов |
US4478643A (en) * | 1982-06-11 | 1984-10-23 | Gakko Hojin Kinki Daigaku | Base composition comprising an irradiated organic pigment |
EP0360513A2 (en) * | 1988-09-19 | 1990-03-28 | Toyota Jidosha Kabushiki Kaisha | Production process of pigment |
-
1995
- 1995-12-07 WO PCT/ES1995/000147 patent/WO1997002324A1/es not_active Application Discontinuation
- 1995-12-07 EP EP95938472A patent/EP0795587A1/en not_active Withdrawn
- 1995-12-07 MX MX9701654A patent/MX9701654A/es unknown
- 1995-12-07 CA CA 2199122 patent/CA2199122A1/en not_active Abandoned
- 1995-12-07 AU AU39846/95A patent/AU3984695A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU829645A1 (ru) * | 1979-08-15 | 1981-05-15 | Предприятие П/Я Г-4855 | Способ модифицировани пигментнойдВуОКиСи ТиТАНА |
SU939503A1 (ru) * | 1980-04-21 | 1982-06-30 | Ярославское Производственное Объединение "Лакокраска" | Способ модифицировани неорганических пигментов |
US4478643A (en) * | 1982-06-11 | 1984-10-23 | Gakko Hojin Kinki Daigaku | Base composition comprising an irradiated organic pigment |
EP0360513A2 (en) * | 1988-09-19 | 1990-03-28 | Toyota Jidosha Kabushiki Kaisha | Production process of pigment |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 8209, Derwent World Patents Index; AN 82-17581E * |
DATABASE WPI Week 8319, Derwent World Patents Index; AN 83-46233K * |
Also Published As
Publication number | Publication date |
---|---|
EP0795587A1 (en) | 1997-09-17 |
AU3984695A (en) | 1997-02-05 |
CA2199122A1 (en) | 1997-01-23 |
MX9701654A (es) | 1998-02-28 |
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