WO2006121291A1 - Polymer resin composition and method of preparing the same - Google Patents
Polymer resin composition and method of preparing the same Download PDFInfo
- Publication number
- WO2006121291A1 WO2006121291A1 PCT/KR2006/001754 KR2006001754W WO2006121291A1 WO 2006121291 A1 WO2006121291 A1 WO 2006121291A1 KR 2006001754 W KR2006001754 W KR 2006001754W WO 2006121291 A1 WO2006121291 A1 WO 2006121291A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polymer resin
- pigment particles
- resin composition
- polyhedral
- flaky
- Prior art date
Links
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
- C08K7/00—Use of ingredients characterised by shape
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2998—Coated including synthetic resin or polymer
Definitions
- the present invention relates to a polymer resin composition and a method of manufacturing the same, and more particularly, to an inexpensive polymer resin composition that provides a uniform color even at resin flow lines or resin weld lines in a molded product manufactured therefrom and which does not deteriorate physical properties of the polymer resin therein, and a method of preparing the same.
- the appearances of polymer resin molded products have been diversified using special effects providing, for example, metallic textures, pearl textures, holographic textures, marble textures, etc.
- a method of providing a metallic texture or a pearl texture includes preparing a polymer resin composition that includes a flaky pigment providing such a textual effect and then directly molding the polymer resin composition into a product having a metallic or pearl textured appearance.
- Polymeric molded products formed using this method have luminescent properties due to the flaky pigment reflecting light.
- flaky pigment particles that maximize the reflection of light and do not greatly affect the volume or physical properties of a polymer resin are used. This method is cheaper than a conventional spray coating method and does not cause environmental problems associated with conventional spray coating methods.
- the orientation of the flaky pigment particles changes in a resin flow line or a resin weld line in which polymer resin flows intersect or weld, from a direction parallel to a surface of the product to a direction perpendicular to the surface of the product (refer to FIG. 1 ).
- the reflection of light in the resin flow line or i resin weld line decreases, thereby resulting in a dark line on the surface of the product degrading the product's appearance.
- the amount of flaky pigment particles can be reduced.
- reducing the amount of flaky pigment particles results in an attenuate texture.
- the use of increased flaky pigment particles results in a rough and inferior product appearance.
- the inventors of the present invention have found a method of selectively distributing flaky pigment particles and polyhedral pigment particles in a composition so as not to degrade the appearance of a product manufactured therefrom even in a resin flow line and a resin weld line.
- FIG. 1 is a concept view of the paths of light in a product manufactured using a polymer resin composition containing only flaky pigment particles;
- FIG. 2 is a concept view of the paths of light in a product manufactured using a polymer resin composition containing only polyhedral pigment particles
- FIG. 3 is a concept view of the paths of light in a product manufactured using a polymer resin composition according to the present invention containing both flaky pigment particles and polyhedral pigment particles;
- FIG. 4 is a photograph of a surface of a polymer resin molded product manufactured in Example 1 according to the present invention.
- FIG. 5 is a photograph of a surface of a polymer resin molded product manufactured in Comparative Example 1.
- the present invention provides a polymer resin composition that does not degrade the appearance of a product manufactured therefrom even in a resin flow line and a resin weld line.
- the present invention provides a method of preparing the polymer resin composition.
- the present invention provides a polymer resin molded product manufactured using the polymer resin composition.
- a polymer resin composition comprising: a polymer resin; 0.01-10.0 parts by weight of flaky pigment particles having an aspect ratio of 0.01-0.1 based on 100 parts by weight of the polymer resin; and 0.01-10.0 parts by weight of polyhedral pigment particles having an aspect ratio of 0.300-0.999 based on 100 parts by weight of the polymer resin.
- a method of preparing a polymer resin composition comprising: preparing master batches by coating flaky pigment particles having an aspect ratio of 0.01-0.1 and polyhedral pigment particles having an aspect ratio of 0.300-0.999 with a polymer resin; and uniformly dry-blending the master batches with a polymer resin.
- the present invention also provides a method of preparing a polymer resin composition, the method comprising: preparing master batches by coating flaky pigment particles having an aspect ratio of 0.01-0.1 and polyhedral pigment particles having an aspect ratio of 0.300-0.999 with a polymer resin; and uniformly compounding the master batches with a polymer resin.
- a polymer resin molded product manufactured using the above-described polymer resin composition.
- a polymer resin molded product having excellent appearance i.e., having a uniform color even in resin flow lines or resin weld lines, and in which there is no decrease in the physical properties of a polymer resin contained therein can be manufactured at a low cost.
- a polymer resin composition containing both flaky pigment particles and polyhedral pigment particles so that the polyhedral pigment particles are mainly distributed in a resin flow line or a resin weld line of a polymer resin molded product manufactured from the polymer resin composition and the flaky pigment particles are mainly distributed in the other regions of the polymer resin molded product.
- flaky pigment particles there are no definite criteria for classifying flaky pigment particles and polyhedral pigment particles.
- pigment particles having an aspect ratio of 0.1 or less are referred to as “flaky pigment particles”
- pigment particles having an aspect ratio of 0.3 or greater and at least four facets are referred to as “polyhedral pigment particles”.
- the aspect ratio means the ratio of the largest diameter to the smallest diameter of a particle. Accordingly, the aspect ratio of a spherical particle is "1".
- the present invention provides a polymer resin composition including
- the amount of the flaky pigment particles is less than 0.01 parts by weight, it is difficult to obtain a special texture effect, such as a metallic texture or a pearl texture, on the surface of the polymer resin molded product.
- the amount of the flaky pigment particles is larger than 10.0 parts by weight, physical properties, such as elongation, impact strength, etc., of the polymer resin constituting the polymer resin molded product deteriorates.
- the amount of the polyhedral pigment particles is less than 0.01 parts by weight, the appearance of a polymer resin molded product manufactured using the polymer resin composition, especially in a resin flow line or a resin weld line in the polymer resin molded product, deteriorates.
- the amount of the polyhedral pigment particles is greater than 10.0 parts by weight, physical properties, such as elongation, impact strength, etc., of the polymer resin constituting the polymer resin molded product deteriorate.
- the aspect ratio of the flaky pigment particles is smaller than 0.01 , the mechanical strength of the polymer resin molded product is so small that it can be can be easily broken.
- the aspect ratio of the flaky pigment particles is greater than 0.10, the flaky pigment particles may not be uniformly distributed in the polymer resin composition, the orientation of the flaky pigment particles is less parallel to the surface of a polymer resin molded product, and a special effect, such as a metallic texture or pearl texture effect, is insufficient.
- the aspect ratio of the polyhedral pigment particles is smaller than 0.300, the amount of reflected light varies according to the orientation of particles, which results in an inferior product appearance.
- the polyhedral pigment particles When the aspect ratio of the polyhedral pigment particles is greater than 0.999, the polyhedral pigment particles are almost spherical, and thus light reflection occurs at points rather than at planes, thereby resulting in a reduction in the amount of reflected light and an inferior product appearance.
- the flaky pigment particles can be composed of only metallic flakes or can be formed by coating a metal layer on flaky substrates.
- Flaky pigment particles composed of only metallic flakes can be formed by shaping spherical metallic powder into a flat form through dry or wet milling.
- any material can be used for the flaky pigment particles composed of only metallic flakes without limitation.
- precious metals such as gold, silver, platinum, palladium, etc.
- base metals such as nickel, copper, chromium, tin, etc., or an alloy thereof can be used for the flaky pigment particles.
- Examples of a material for the flaky substrate on which a metal layer will be coated include, but are not limited to, glass, calcite, wollastonite, silica, silicon carbide, cubic boron nitride (CBN) abrasive, etc., all of which are in powder form.
- the glass include, but are not limited to, element glass, hydrogen bond glass, oxide glass, fluoride glass, chloride glass, sulfide glass, carbonate glass, nitrate glass, sulfate glass, etc.
- any material can be used for the metal layer without limitation provided that a uniform thickness and a desired texture can be attained therewith.
- the material for the metal layer include precious metals, such as gold, silver, platinum, palladium, etc., base metals, such as nickel, copper, chromium, tin, etc., or an alloy thereof.
- the flaky pigment particles with a metal layer on their flaky substrate can be prepared through, for example, sputtering or fine powder coating, but not limited thereto.
- the metal layer may have a thickness of 10-200 nm. When the thickness of the metal layer is smaller than 10 nm, the surface of the substrate cannot be uniformly coated. When the thickness of the metal layer is greater than 200 nm, the metal layer has more uneven portions, and thus the luminosity of the particle decreases.
- the flaky pigment particles may have a largest diameter of 10-250 ⁇ m.
- the flaky pigment particles When the largest diameter of the flaky pigment particles is smaller than 10 ⁇ m, the flaky pigment particles are too small to provide a special effect, such as a metallic texture effect, etc.
- the flaky pigment particles When the largest diameter of the flaky pigment particles is larger than 250 ⁇ m, the flaky pigment particles are so large that they can be easily recognized, and thus a polymer resin molded product having an elegant appearance cannot be attained therefrom.
- the polyhedral pigment particles may have a structure having a metal layer, which provides a metallic texture or pearl texture effect, on a substrate having an appropriate size and shape.
- the polyhedral pigment particles can be composed of only the substrate without the metal layer. Any material can be used for the substrate having a light-reflecting characteristic and not requiring a metal layer without limitation provided that a desired texture effect can be attained therewith.
- Examples of the material for such a substrate include, but are not limited to, precious metals, such as gold, silver, platinum, palladium, etc., base metals, such as nickel, copper, chromium, tin, etc., an alloy thereof, etc.
- Examples of a material for the substrate of the polyhedral pigment particles with a metal layer include glass, calcite, wollastonite, silica, wafer fragments, silicon carbide, cubic boron nitride (CBN) abrasive, aluminum nitride, etc., all of which are in powder form.
- Examples of the glass include, but are not limited to, element glass, hydrogen bond glass, oxide glass, fluoride glass, chloride glass, sulfide glass, carbonate glass, nitrate glass, sulfate glass, etc.
- glass powder having a specific particle diameter distribution is prepared through mechanical pulverization using, for example, a ball mill, a jet mill, an attriter, a sand mill, a sample mill, etc.
- a narrower particle diameter distribution leads to a more uniform product appearance.
- the particle diameter distribution of glass powder can be appropriately varied if required.
- any material can be used for the metal layer of the polyhedral pigment particles without limitation provided that a uniform thickness and a desired texture can be attained therewith.
- the material for the metal layer include precious metals, such as gold, silver, platinum, palladium, etc., base metals, such as nickel, copper, chromium, tin, etc., or an alloy thereof.
- the polyhedral pigment particles with a metal layer on their polyhedral substrate can be prepared through, for example, sputtering, electroless plating, vacuum deposition, or fine powder coating, but not limited thereto.
- the metal layer of the polyhedral pigment particles may have a thickness of 10-
- the thickness of the metal layer is smaller than 10 nm, the surface of the substrate cannot be uniformly coated.
- the thickness of the metal layer is greater than 200 nm, the roughness of the metal layer increases, and thus the luminosity of the particle decreases.
- the polyhedral pigment particles may have a largest diameter of 20-500 ⁇ m.
- the polyhedral pigment particles are too small to provide a special effect, such as a metallic texture effect, etc.
- the polyhedral pigment particles are so large that they can be easily recognized, and thus a polymer resin molded product having an elegant product appearance cannot be attained therefrom.
- edges of the flaky pigment particles and the polyhedral pigment particles can be processed into round shapes, which less scatter light than shape edges.
- the edges of the flaky pigment particles and/or the polygonal pigment particles may be processed into round shapes through, for example, grinding. Any grinding method that is known to one of ordinary skill in the art can be used.
- the polyhedral pigment particles may have 4-12 facets, for example, 6-10 facets.
- the number of facets of the polyhedral pigment particles is less than 4, the amount of reflected light seriously changes according to the orientation of the polyhedral pigment particles.
- the number of facets of the polyhedral pigment particles is greater than 12, the area of each facet is too small to reflect a sufficient amount of light, which degrades the appearance of a product manufactured from the polyhedral pigment particles.
- polymer resin mixed with the flaky pigment particles and the polyhedral pigment particles include, but are not limited thereto, thermoplastic and thermoset resins such as polyethylene, polypropylene, ABS resin, AES resin, AS resin, acrylic resin, polystyrene resin, polyvinylchloride, polymethylpentene, polyamide, polyethylene terephthalate, polyarylate, polyacetal resin, polycarbonate, polyphenylene ether, polysulfone, polyphenylenesulfide, polyethersulfone, polybutadiene, a mixture thereof, a copolymer thereof, a modified product thereof, etc.
- thermoplastic and thermoset resins such as polyethylene, polypropylene, ABS resin, AES resin, AS resin, acrylic resin, polystyrene resin, polyvinylchloride, polymethylpentene, polyamide, polyethylene terephthalate, polyarylate, polyacetal resin, polycarbonate, polyphenylene ether, polysulfone, polyphenylene
- highly transparent polymer resins such as ABS resin, PMMA resin, AS resin, acrylic resin, polystyrene, polycarbonate, PVC resin, etc.
- Any method that is known to one of ordinary skill in the art as a method by which the flaky pigment particles and polyhedral pigment particles can be uniformly mixed with the polymer resin can be used without limitation.
- a mixture of the flaky pigment particles and polyhedral pigment particles with the polymer resin can be dry- blended or compounded after being formed as a master batch.
- a direct mixing method includes adding the flaky pigment particles and the polyhedral pigment particles into a polymer resin and mixing the mixture using, for example, a tumbler, a blender, a banbury mixer, a mill roll, etc., to uniformly distribute the flaky pigment particles and the polyhedral pigment particles in the polymer resin.
- a mixing method using master batches includes coating the surfaces of the flaky pigment particles and the polyhedral pigment particles with a polymer resin to form master batches and dispersing the master batches in a bulk polymer resin. This method provides good dispersibility and prevents chemical and/or physical damage of the flaky pigment particles and the polyhedral pigment particles.
- Compounding is a method of uniformly mixing the flaky pigment particles and the polyhedral pigment particles with a polymer resin in, for example, an extruder, while melting the polymer resin.
- a polymer resin for example, an extruder
- master batches thereof can be used instead of the flaky pigment particles and the polyhedral pigment particles.
- a stabilizer, a dispersing agent, a UV-absorbing agent, an easy-releasing agent, etc. can be added into the polymer resin provided that a quality product appearance and a special texture effect are ensured.
- a polymer resin molded product can be manufactured using the polymer resin composition described above in which the flaky pigment particles and the polyhedral pigment particles are dispersed in the polymer resin. Any method that is known to one of ordinary skill in the art can be used without limitation to manufacture the polymer resin molded product.
- the distribution of the flaky pigment particles and polyhedral pigment particles is locally varied, especially near a resin flow line or resin weld line of a polymer resin molded product, in a process of manufacturing the polymer resin molded product. While the density of the flaky pigment particles is maintained almost constant in the polymer resin composition, the density of the polyhedral pigment particles is much higher near the resin flow line or resin weld line of the polymer resin molded product than other regions. Thus, a sufficiently amount of light can be reflected near the resin flow line or resin weld line and no dark line, which degrades the appearance of the product, appear on the surface of the product.
- a transparent ABS resin (ABS TR557, available from LG Chem. Ltd.) was used as a polymer resin of a polymer resin composition. 0.4 parts by weight of flaky pigment particles and 3 parts by weight of polyhedral pigment particles based on 100 parts by weight of the polymer resin were added. Aluminum flakes having an average diameter of 135 ⁇ m were used as the flaky pigment particles.
- the polyhedral pigment particles were obtained by coating glass fragments with silver and had an average particle diameter of 70 ⁇ m and an aspect ratio of 1-0.2.
- FIG. 4 is a photograph of a surface of a polymer resin molded product manufactured using the polymer resin composition of Example 1.
- a 5:5 mixture of a transparent ABS resin (ABS TR557, available from LG Chem. Ltd.) and a high impact strength, high glossy ABS resin (ABS HG173, available from LG Chem. Ltd.) was used as a polymer resin of a polymer resin composition.
- a transparent ABS resin ABS TR557, available from LG Chem. Ltd.
- a high impact strength, high glossy ABS resin ABS HG173, available from LG Chem. Ltd.
- Aluminum flakes having an average particle diameter of 135 ⁇ m were used as the flaky pigment particles.
- the polyhedral pigment particles were obtained by coating glass fragments with silver and had an average particle diameter of 70 ⁇ m and an aspect ratio of 1-0.2.
- a transparent ABS resin was used as a polymer resin of a polymer resin composition. 0.7 parts by weight of flaky pigment particles based on 100 parts by weight of the polymer resin were added. Aluminum flakes having an average particle diameter of 45 ⁇ m were used as the flaky pigment particles.
- FIG. 5 is a photograph of a surface of a polymer resin molded product manufactured using the polymer resin composition of Comparative Example 1.
- a transparent ABS resin was used as a polymer resin of a polymer resin composition, and flaky pigment particles of different sizes were added into the polymer resin. 0.9 parts by weight of aluminum flakes having an average particle diameter of 135 ⁇ m and 0.3 parts by weight of aluminum flakes having an average particle diameter of 60 ⁇ m based on 100 parts by weight of the polymer resin were added.
- a polymer resin composition was prepared in the same manner as in Comparative Example 1 , except that 3 parts by weights of polyhedral pigment particles instead of the flaky pigment particles were used.
- the polyhedral pigment particles were obtained by coating glass fragments with silver and had an average particle diameter of 70 ⁇ m. and an aspect ratio of 1-0.2.
- ⁇ Inferior metallic texture x: No metallic texture There is no practical problem at the grade indicated by ⁇ or O, wherein the grade indicated by ® is most desirable.
- the polymer resin compositions of Examples 1 and 2 according to the present invention caused no practical problem in terms of the formation of resin weld lines and the metallic texture of products manufactured therefrom.
- the polymer resin molded product manufactured using the polymer resin composition of Comparative Example 1 had excellent metallic texture, a distinct resin weld line also appeared in the polymer resin molded product manufactured in Comparative Example 1.
- the polymer resin molded product manufactured using the composition of Comparative Example 2 had good metallic texture but also had a resin weld line.
- the polymer resin molded product manufactured using the composition of Comparative Example 3 had in distinct resin weld lines but had inferior metallic texture.
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- 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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008511055A JP2008546853A (en) | 2005-05-11 | 2006-05-11 | Polymer resin composition and method for producing the same |
CN2006800158517A CN101171287B (en) | 2005-05-11 | 2006-05-11 | Polymer resin composition and method of preparing the same |
EP06768478A EP1879951A4 (en) | 2005-05-11 | 2006-05-11 | Polymer resin composition and method of preparing the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20050039099 | 2005-05-11 | ||
KR10-2005-0039099 | 2005-05-11 | ||
KR1020050078050A KR100789244B1 (en) | 2005-05-11 | 2005-08-24 | Polymer resin composition and the method of manufacturing the same |
KR10-2005-0078050 | 2005-08-24 |
Publications (1)
Publication Number | Publication Date |
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WO2006121291A1 true WO2006121291A1 (en) | 2006-11-16 |
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ID=37396755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2006/001754 WO2006121291A1 (en) | 2005-05-11 | 2006-05-11 | Polymer resin composition and method of preparing the same |
Country Status (3)
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US (1) | US7754805B2 (en) |
EP (1) | EP1879951A4 (en) |
WO (1) | WO2006121291A1 (en) |
Families Citing this family (1)
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GB2515469A (en) * | 2013-05-28 | 2014-12-31 | Polycasa Ltd | Method of producing an acrylic material |
Citations (6)
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JPH07304899A (en) * | 1994-05-13 | 1995-11-21 | Nippon Glass Fiber Co Ltd | Metallic pigment for incorporation into resin and synthetic resin composition containing the same |
JPH08109340A (en) * | 1994-10-12 | 1996-04-30 | Nippon Glass Fiber Co Ltd | Metallic pigment and synthetic resin composition compounded with the same |
US5530051A (en) * | 1993-12-08 | 1996-06-25 | Kanegafuchi Kagaku Kabushiki Kaisha | Synthetic resin composition and metallic pigment for incorporation into synthetic resin |
JPH09194630A (en) * | 1996-01-12 | 1997-07-29 | Nisshin Steel Co Ltd | Metallic pigment comprising polyhedral particle |
JPH11279434A (en) * | 1998-03-26 | 1999-10-12 | Hitachi Chem Co Ltd | Metallic pigment, composition for metallic tone molding product and metallic tone molding product |
JP2005105253A (en) * | 2003-09-11 | 2005-04-21 | Maruo Calcium Co Ltd | Metallic pigment and synthetic resin composition obtained by mixing the pigment thereinto |
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JPS6395252A (en) * | 1986-10-13 | 1988-04-26 | Mitsui Toatsu Chem Inc | Polypropylene resin composition |
JP2651058B2 (en) * | 1991-06-06 | 1997-09-10 | 帝人化成株式会社 | Resin composition |
JP3457753B2 (en) * | 1994-10-21 | 2003-10-20 | Jsr株式会社 | Thermoplastic resin composition |
JPH10265676A (en) | 1997-03-27 | 1998-10-06 | Sekisui Chem Co Ltd | Synthetic resin composition with metallic appearance |
JP2001226601A (en) | 1999-12-06 | 2001-08-21 | Nippon Sheet Glass Co Ltd | Glossy resin composition and molded product therefrom |
US6893694B2 (en) * | 2001-05-08 | 2005-05-17 | Pactiv Corporation | Containers and sheets made of filled polymer compositions |
AU2003272278A1 (en) | 2002-09-05 | 2004-03-29 | Jrs Pharma Lp | Compositions for industrial applications |
JP4334204B2 (en) * | 2002-11-21 | 2009-09-30 | メルク株式会社 | High-luminance and high-saturation iris pigment and method for producing the same |
DE102005002124A1 (en) * | 2005-01-17 | 2006-07-27 | Merck Patent Gmbh | Strong color effect pigments |
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2006
- 2006-05-11 US US11/432,000 patent/US7754805B2/en active Active
- 2006-05-11 WO PCT/KR2006/001754 patent/WO2006121291A1/en active Application Filing
- 2006-05-11 EP EP06768478A patent/EP1879951A4/en not_active Withdrawn
Patent Citations (6)
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US5530051A (en) * | 1993-12-08 | 1996-06-25 | Kanegafuchi Kagaku Kabushiki Kaisha | Synthetic resin composition and metallic pigment for incorporation into synthetic resin |
JPH07304899A (en) * | 1994-05-13 | 1995-11-21 | Nippon Glass Fiber Co Ltd | Metallic pigment for incorporation into resin and synthetic resin composition containing the same |
JPH08109340A (en) * | 1994-10-12 | 1996-04-30 | Nippon Glass Fiber Co Ltd | Metallic pigment and synthetic resin composition compounded with the same |
JPH09194630A (en) * | 1996-01-12 | 1997-07-29 | Nisshin Steel Co Ltd | Metallic pigment comprising polyhedral particle |
JPH11279434A (en) * | 1998-03-26 | 1999-10-12 | Hitachi Chem Co Ltd | Metallic pigment, composition for metallic tone molding product and metallic tone molding product |
JP2005105253A (en) * | 2003-09-11 | 2005-04-21 | Maruo Calcium Co Ltd | Metallic pigment and synthetic resin composition obtained by mixing the pigment thereinto |
Non-Patent Citations (1)
Title |
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See also references of EP1879951A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1879951A1 (en) | 2008-01-23 |
EP1879951A4 (en) | 2008-07-02 |
US7754805B2 (en) | 2010-07-13 |
US20060293433A1 (en) | 2006-12-28 |
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