US20220212454A1 - Thin multi-layer paneling structure - Google Patents
Thin multi-layer paneling structure Download PDFInfo
- Publication number
- US20220212454A1 US20220212454A1 US17/609,942 US202017609942A US2022212454A1 US 20220212454 A1 US20220212454 A1 US 20220212454A1 US 202017609942 A US202017609942 A US 202017609942A US 2022212454 A1 US2022212454 A1 US 2022212454A1
- Authority
- US
- United States
- Prior art keywords
- layer
- gloss
- polymer structure
- thin
- acrylic
- 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.)
- Abandoned
Links
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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Definitions
- the invention also relates to a high gloss, multi-layer panel that can be easily repaired, once marred, to return the surface gloss to at least 90% of the original surface gloss.
- High gloss finishes are appealing, and are desired in many articles, including car interiors and exteriors, as well as in sports equipment, and lawn and garden equipment.
- One problem with typical gloss coatings and paints is that the surface gloss layer is easily damaged due to scratching, marring and chemical exposure. Once marred, the thin surface coating is difficult to repair. Additionally, many coatings involve the use of volatile organic solvents which can cause health and/or environmental damage.
- Certain structural plastics such as high impact polystyrene (HIPS), acrylonitrile/butadiene/styrene (ABS) resins, poly(vinyl chloride)(PVC) resins, and the like, exhibit attractive mechanical properties when extruded, molded, or formed into various articles of manufacture. Although these structural plastics are strong, tough and relatively inexpensive, the properties of their exposed surfaces are less than ideal. They are easily degraded by light; can be easily scratched; and are eroded by common solvents.
- HIPS high impact polystyrene
- ABS acrylonitrile/butadiene/styrene
- PVC poly(vinyl chloride)
- capstocks A common practice in the industry to apply another resinous material over the structural plastic to protect the underlying structural material and provide a surface that can withstand abuse associated with the use environment. Such surfacing materials are called “capstocks”.
- the capstock is generally much thinner than the structural plastic, typically being about 10% to about 25% of the total thickness of the composite comprising the capstock and structural plastic plies.
- the thickness of the capstock can be about 0.01 mm to 0.8 mm, preferably 0.0127 mm to 0.65 mm, and more preferably from 0.04 mm to 0.38 mm whereas the thickness of the structural plastic ply can be about 1.0 to about 10 mm.
- acrylic resins known for their excellent optical characteristics, resistance to degradation by sunlight, hardness, inertness to water and common chemicals, durability, and toughness, are capstocks of choice for various structural plastics, such as ABS sheet.
- the mechanical properties of the capstock generally are secondary to those of the structural plastic, but it is important that the capstock not adversely affect the mechanical properties of the composite.
- Typical acrylic capstock materials such as Arkema's SOLARKOTE® resins are described in U.S. Pat. No. 6,852,405. These capstock materials are generally impact modified. A problem with impact modified single acrylic sheet, is that the impact modification diminishes both the gloss, and the chemical resistance of the cap layer.
- Capstocks can be cross-linked to improve chemical resistance, but it is known to be difficult to make cross-linked capstocks thin enough to replace a painted finish.
- U.S. Pat. Nos. 5,975,625, and 6,852,405 describes automotive vehicle bodies having a single layer plastic outer body and an inner metal frame.
- a thin capstock material that has a very high gloss, and has a high impact resistance, where the high gloss resists gloss reduction damage caused by surface contacts with chemicals such as isopropyl alcohol, ethyl alcohol, methyl alcohol, sulphuric acid, phosphoric acid, toluene, isooctane, diisobutylene, and chemical mixtures such as gasoline fuel, diesel fuel, bio-fuel, bitumen, antifreeze, brake fluid, engine oil, Pancreatin (bird feces substitute), tree resin, and sunscreen.
- the high gloss finish should also be easily restored to within 10% of the initial surface gloss.
- a post-polymerization reaction can be used to form useful cross-linking, such as by irradiation such as UV radiation and e-beam radiation.
- the invention relates to a multi-layer polymer structure comprising a thin, high gloss outer cap layer having a 60° gloss of greater than 80, preferably greater than 85, and more preferably greater than 90, as measured by a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter, wherein said cap layer has a thickness of from 0.01 mm to 0.8 mm, preferably 0.0127 mm to 0.65 mm, and more preferably from 0.04 mm to 0.38 mm; and an internal high impact resistant layer, wherein said high impact layer has an ASTM D256 notched Izod result at 23° C. of greater than 0.8 ft-lb/in, preferably greater than 1.0 ft-lb/in, and more preferably greater than 1.2 ft-lb/in.
- the thin high gloss outer cap layer of the first aspect has a heat deflection temperature (HDT), as measured by ASTM D648 (1.8 MPa) of at least 175° F., when prior to measurement, the samples are annealed at 80° C. for 96 hours then slow-cooled over 4 hours to 23° C.
- HDT heat deflection temperature
- the thin, high gloss outer cap layer of any of the first two aspects contains, as the matrix, at least one acrylic and/or styrenic polymer.
- the multi-layer polymer structure of any of the previous aspects contains, in the thin, high gloss outer cap layer, less than 5 weight percent, preferably less than 3 weight percent, preferably less than 1 weight percent, and most preferably no impact modifiers.
- the thin, high gloss outer cap layer of any of the previous aspects is chemical resistant and scratch resistant, and has a gloss retention of over 85%, preferably over 90% and a delta E of less than 5, preferably less than 3 for each test material using the following procedure: for 6 ⁇ 6 inch samples conditioned at 85° C. for one hour and rubbed with ten back-and-forth strokes with a PIG Hazmat pad soaked with a test chemical, then wiped with a clean PIG Hazmat pad, washed, and reconditioned for at least one hour, and 60° gloss re-measured.
- the test chemicals for the rub are chemicals such as butylene glycol and glyceryl stearate typically found in sunscreens.
- the cloths used in the test may be 3′′ ⁇ 14′′ PIG Hazmat Pads (MAT302) or 3′′ ⁇ 14′′ PIG Hazmat Pads (MAT423).
- the thin, high gloss outer cap layer of any of the previous aspects contains a polymer having a weight average molecular weight of at least 70,000 g/mol.
- the internal high impact resistant layer of any of the previous aspects is a thermoset, thermoplastic, and/or a polymer composite.
- the high-impact layer of any of the previous aspects is a composite composition containing particles, nanoparticles, and/or fibers.
- the multi-layer structure of any of the previous aspects further comprises a tie layer or adhesive layer between the exterior high gloss layer, and interior high impact layer.
- the multi-layer structure of any of the previous aspects exists over a substrate, wherein said substrate is selected from metal; ceramics; and cellulosics; thermoplastic, elastomeric, and thermoset polymers having a thickness in the range 0.1 mm to 30 mm and preferably 1.0 mm to 5 mm.
- a fourteenth aspect a method for restoring the gloss on a chemically or physically marred polymer multi-layer structure of any of the previous aspects is presented, where the method includes the step of removing or hiding the mar.
- the method of aspect 14 involves the mar restoration through the process of buffing, polishing, wiping, chemical treating, and/or sanding said multi-layer structure, wherein said gloss is restored to within 30%, preferably 20%, and most preferably within 10% of the original gloss, as measured by a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter,
- the multi-layer polymeric structure of any of the previous aspects is manufactured by thermoforming, in-mold decorating, sequential injection molding, coextrusion, resin transfer molding with in-mold decoration, or 3D printing (additive manufacturing).
- an article which contains the thin multi-layer polymeric structure of any of the previous aspects, where the article is selected from the group consisting of exterior paneling, automotive body panels, automotive body trim, recreational vehicle body panels or trims, exterior panels for recreational sporting equipment, marine equipment, exterior panels for outdoor lawn, garden and agricultural equipment and exterior paneling for marine, aerospace structures, aircraft, public transportation applications, interior paneling applications, interior automotive trims, interior panels for marine equipment, interior panels for aerospace and aircraft, interior panels for public transportation applications, and paneling for appliances, furniture, and cabinets.
- Copolymer as used herein, means a polymer having two or more different monomer units. “Polymer” is used to mean both homopolymer and copolymers. For example, as used herein, “PMMA” and “polymethyl methacrylate” are used to connote both the homopolymer and copolymers, unless specifically noted otherwise. (Meth)acrylate is used to connote both acrylates and methacrylates, as well as mixtures of these. Polymers may be straight chain, branched, star, comb, block, or any other structure. The polymers may be homogeneous, heterogeneous, and may have a gradient distribution of co-monomer units. All references cited are incorporated herein by reference.
- percent shall mean weight percent.
- Molecular weight is a weight average molecular weight as measured by GPC. In cases where the polymer contains some cross-linking, and GPC cannot be applied due to an insoluble polymer fraction, soluble fraction/gel fraction or soluble fraction molecular weight after extraction from gel is used.
- Multi-layer as used herein describes a structure having at least two layers attached directly or indirectly to each other, wherein the exterior layer is a high-gloss capstock, and at least one interior layer is a high impact layer.
- the layers may be directly in contact with each other, or may contain one or more other layers in between, such as a tie layer, an adhesive layer, a vapor barrier, a color layer or special effects layer, etc.
- the multi-layer structure has a high gloss capstock on either side of the interior high impact layer. This arrangement is especially useful where the multilayer structure is transparent or translucent, and the surfaces of both sides would be visible.
- the exterior high gloss layer is an acrylic- and/or styrenic-based layer; is chemical resistant, mar resistant and scratch resistant, with any deterioration of the high gloss being restorable to within 10% of the original gloss.
- the 60° gloss of the exterior layer is greater than 80, preferably greater than 85, and more preferably greater than 90, as measured by a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter.
- the exterior, high gloss layer may optionally contain 0.01-20 wt % nano-sized particles additives to improve the chemical resistance, mar resistance, scratch resistance, and/or improve the ability of the high gloss surface to be restored after incurring damage from chemical exposure, marring, and/or scratching.
- Useful nano-sized inorganic fillers include, but are not limited to silica, alumina, zinc oxide, barium oxide, molybdenum disulfide, boron nitride, tungsten disulfide, titanium oxide, nanographene, nanographite, graphite nanoplatelets, and graphite oxide nanoparticles.
- the exterior, high gloss layer is thin, having a thickness of from 0.01 mm to 0.8 mm, preferably 0.0127 mm to 0.65 mm, and more preferably from 0.04 mm to 0.38 mm.
- the exterior, high gloss layer has a heat deflection temperature (HDT), of greater than 175° F. (or 80° C.) as measured by ASTM D648 (1.8 MPa), when samples are annealed at 60-80° C. for 96 hours then slow-cooled over 4 hours to 23° C.
- HDT heat deflection temperature
- the acrylic or styrenic polymer of the invention has a weight average molecular weight of between 50,000 and 500,000 g/mol, and preferably from 70,000 and 200,000 g/mol, as measured by gel permeation chromatography.
- the molecular weight distribution of the acrylic polymer may be monomodal, or multimodal with a polydispersity index greater than 1.5.
- Copolymers containing comonomers that will lower the HDT of the copolymer, such as C 1-6 acrylates, should have a weight average molecular weight of greater than 100,000 g/mol.
- an acrylic cap layer will contain predominately methyl methacrylate monomer units, and have less than 10 weight percent, and preferably less than 5 weight percent of comonomers.
- the acrylic capstock may also have comonomers such as methacrylic acid, tertiobutyl cyclohexanol methacrylate, alpha-methyl styrene, and other T g increasing monomers, where the total co-monomer content can be up to 25%.
- comonomers such as methacrylic acid, tertiobutyl cyclohexanol methacrylate, alpha-methyl styrene, and other T g increasing monomers, where the total co-monomer content can be up to 25%.
- the cap layer is a blend of an acrylic or styrenic polymer with up to 90 weight percent, preferably less than 60 weight percent, more preferably less than 35 weight percent % of polyvinylidene fluoride (PVDF) homopolymers or copolymers.
- PVDF polyvinylidene fluoride
- a blend of acrylic polymers with less than 30 weight percent, preferably less than 20 weight percent of polylactic acid can also be used.
- the high gloss acrylic capstock can also be a crosslinked acrylic sheet with less than 5% crosslinking agent.
- the exterior, high-gloss layer may be a polymer blend, containing the acrylic or styrenic polymer plus up to 60 wt %, preferably up to 40 wt % of one or more other compatible, miscible or semi-miscible polymers.
- One useful blend is a blend of a poly(meth)acrylic polymer or copolymer with acrylonitrile-styrene-acrylate (ASA) polymer.
- ASA acrylonitrile-styrene-acrylate
- crosslinking is provided by a post-polymerization reaction, such as by the use of irradiation.
- Useful irradiation includes UV radiation, gamma radiation and e-beam.
- Alkyl methacrylate monomer is preferably methyl methacrylate, which may make up from 50 to 100 percent of the monomer mixture. 0 to 50 percent of other acrylate and methacrylate monomers or other ethylenically unsaturated monomers, included but not limited to, styrene, alpha methyl styrene, acrylonitrile, and crosslinkers at low levels may also be present in the monomer mixture.
- methacrylate and acrylate monomers useful in the monomer mixture include, but are not limited to, methyl acrylate, ethyl acrylate and ethyl methacrylate, butyl acrylate and butyl methacrylate, iso-octyl methacrylate and acrylate, n-octyl acrylate, lauryl acrylate and lauryl methacrylate, stearyl acrylate and stearyl methacrylate, isobornyl acrylate and methacrylate, methoxy ethyl acrylate and methacrylate, 2-ethoxy ethyl acrylate and methacrylate, isodecyl acrylate and methacrylate, tertiobutyl cyclohexyl acrylate and methacrylate, tertiobutyl cyclohexanol methacrylate, trimethyl cyclohexyl acrylate and methacrylate, meth
- Styrenic-based polymers include, but are not limited to, polystyrene, high-impact polystyrene (HIPS), acrylonitrile-butadiene-styrene (ABS) copolymers, acrylonitrile-styrene-acrylate (ASA) copolymers, styrene acrylonitrile (SAN) copolymers, methacrylate-butadiene-styrene (MBS) copolymers, styrene-butadiene copolymers, styrene-butadiene-styrene block (SBS) copolymers and their partially or fully hydrogenenated derivatives, styrene-isoprene copolymers, styrene-isoprene-styrene (SIS) block copolymers and their partially or fully hydrogenenated derivatives, and styrene-(meth)acrylate copolymers such as
- a preferred styrenic polymer is ASA.
- the styrenic polymers of the invention can be manufactured by means known in the art, including emulsion polymerization, solution polymerization, and suspension polymerization.
- Styrenic copolymers of the invention have a styrene content of at least 10 percent by weight, preferably at least 25 percent by weight.
- the capstock should contain less than 15 weight percent impact modifier, preferably less than 5 weight percent, more preferably less than 3 weight percent and most preferably less than 1 weight percent. In one preferred embodiment, the cap layer contains no impact modifier.
- the thin multi-layer paneling structure of the invention has at least one high impact resistant interior layer.
- This could be an impact-resistant thermoplastic, a blend of thermoplastics where the blend demonstrates impact-resistance, a blend of one or more thermoplastics and one or more thermoplastic elastomers and/or thermoplastic vulcanizates where the blend demonstrates impact-resistance, a thermoset polymer or a polymer composite.
- the high impact layer has an ASTM D256 notched Izod result at 23° C. of greater than 0.8 ft-lb/in, preferably greater than 1.0 ft-lb/in, and more preferably greater than 1.2 ft-lb/in.
- thermoplastics include, but are not limited to, acrylonitrile butyl styrene (ABS) polyvinyl chloride (PVC), and high impact polystyrene (HIPS), polycarbonate (PC), a blend of acrylic polymer and polylactic acid, impact modified acrylics such as RNEW® from Arkema, impact modified styrenics, polycarbonate, thermoplastic polyolefin (TPO), poly(phenylene oxide), polyphenylene ether, polystyrene polyamides, polyimides, polyesters, polyolefins and blends thereof.
- ABS acrylonitrile butyl styrene
- PVC polyvinyl chloride
- HIPS high impact polystyrene
- PC polycarbonate
- TPO thermoplastic polyolefin
- TPO thermoplastic polyolefin
- Preferred thermoplastics are ABS and polycarbonate.
- the interior high impact resistant polymer is a blend of an acrylic resin and a polyester, such as a polylactic acid.
- the multi-layer structure of the invention may be manufactured by several different means, as known in the art.
- the structure could be formed by coextrusion, extrusion lamination, extrusion coating, in-mold decoration, sequential injection molding, thermo-forming of a co-extruded sheet or cast sheet, RTM-TS (resin transfer molding with in-mold decoration), and 3D printing (additive manufacturing).
- the thin multi-layer structure of the invention has several properties that make it especially useful in many application.
- the high gloss cap has a 60° gloss of greater than 80, preferably greater than 85, and more preferably greater than 90, as measured by a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter.
- the multi-layer structure of the invention because of its excellent gloss, mar and scratch resistance, and the ability to restore the gloss, is an excellent material for use in many applications and articles.
- These include, but are not limited to internal and exterior paneling, automotive body panels, auto body trim, recreational vehicle body panels or trims, exterior panels for recreational sporting equipment, marine equipment, exterior panels for outdoor lawn, garden and agricultural equipment and exterior paneling for marine, aerospace structures, aircraft, public transportation applications, interior paneling applications, interior automotive trims, interior panels for marine equipment, interior panels for aerospace and aircraft, interior panels for public transportation applications, and paneling for appliances, furniture, and cabinets.
- the starting surface gloss and final surface gloss are characterized by a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter and the 60° is recorded (measured parallel to the rubbing direction).
- the measurement unit conforms to the standards DIN 67530, ISO 2813, ASTM D 523 and BS 3900 Part D 5. Values reported are the percentage of surface gloss that is retained after chemical exposure.
- the high gloss acrylic surface is buffed and polished with the following method. Apply tallow and rouge to a cotton muslin buffing wheel. Buff sample for 30-240 seconds with light pressure below the axis of the wheel; enough pressure to let the wheel graze the surface of the sample. Following the buffing step, apply light pressure on sample with a cotton flannel polishing wheel for 10 seconds to further smooth out the surface. After buffing and polishing, clean the acrylic surface with soap and water and dry with cotton cloth.
- Samples exposed to scratching damaged were paper polished within 1 hour after scratching by the following method.
- a 4′′ ⁇ 4′′ polishing paper (3MTM 281 Q WetordryTM 2 micron polishing paper) was wrapped around a dense sponge. Using light pressure and a circular polishing motion, the scratched acrylic surface was polished by hand with the polishing paper continuously for 5 minutes. After paper polishing the acrylic surface was washed with soap and water and dried with cotton cloth. The 20 surface gloss of a non-scratched region of the plaque was measured before and after paper polishing with a BYK Gardner Micro-Tri-Gloss 20/60/85 degree Gloss Meter as previously described.
- the visibility of scratch damage is quantified by an optical microscopy method.
- a digital image of the scratched region of the surface is captured in bright-field mode with a Nikon ME600 optical microscope equipped with a Pixelink PL-D 685 color camera at 100 ⁇ magnification.
- the image is converted to an RGB color format, where each pixel color is expressed by R, G and B values (integer values 0 to 255) for the Red, Green and Blue components of the pixel color, according to the RGB color system.
- the R, G and B values are measured for each pixel within two analysis regions of identical size and dimensions, A and B. Region A is entirely contained within the scratched region, and region B is adjacent to Region A and entirely contained within the non-scratched region. Both regions must contain an area greater than 1000 pixels.
- the average R, G, and B values of all pixels are calculated.
- the Scratch Visibility Value is calculated according to:
- R A , G A and B A are the average Red, Green and Blue color values, respectively, of all pixels in Region A.
- R B , G B and B B are the average Red, Green and Blue color values, respectively, of all pixels in Region B. It follows that scratch visibility increases with increasing Scratch Visibility Value.
- Sample 2 clear PMMA/EA copolymer having an EA comonomer content of 1-10 wt % and a weight average molecular weight in the range of 100,000 to 200,000 g/mol.
- Sample 3 clear PMMA/EA copolymer having an EA comonomer content of 1-10 wt % and a weight average molecular weight in the range of 70,000 to 110,000 g/mol, with 10-35 wt % of impact modifier based on the weight of the PMMA/EA copolymer.
- Sample 6 is a black PMMA/EA copolymer having an EA comonomer content of 0.1 to 2.0-wt % and a weight average molecular weight in the range of 70,000 to 110,000 g/mol
- Sample 7 is a black PMMA/MAA copolymer (having a MAA comonomer content of 1-10 wt % and a weight average molecular weight in the range of 70,000 to 110,000 g/mol)
- Both samples are tested in duplicates, and both samples exhibit more than 90% gloss retention and minimal color change (delta E less than 3), as shown in Table 3.
- Exterior paneling often incurs surface damage due to scratching and abrasion.
- This example demonstrates the utility of scratch resistant formulations such as those described in WO 18132818 A3 for the exterior layer of high gloss exterior paneling. Also demonstrated is the restoration of a surface after scratching damage via paper polishing. 6′′ ⁇ 6′′ samples plaques were prepared by injection molding and then affixed to steel plates for scratch tests and paper polishing. Samples were subjected to scratching according to the scratching test method described above, and then paper polished according to the paper polishing method described above. The scratch visibility, as well as surface gloss before and after paper polishing are listed in Table 4.
- Sample 8 is a black PMMA/EA copolymer having an EA comonomer content of 0.1 to 2.0 wt % and a weight average molecular weight in the range of 70,000 to 110,000 g/mol.
- Sample 9 is the same as Sample 8, with the addition of 15 wt % of Cabot CAB-O-SIL® TS622 fumed silica. Sample 9 was prepared by melt compounding the black PMMA/EA copolymer and Cabot CAB-O-SIL® TS622 fumed silica on a 27 mm Leistritz ZSE-27HP twin-screw extruder.
- the heat buildup (temperature rise of plastic above ambient) of dark acrylic capstocks can be reduced as much as 30° F. (determined using ASTM D4803). Accordingly, the service temperature of exterior paneling with IR reflective pigments or IR transmitting organic dyes will be much lower than the service temperature of exterior paneling without IR reflective pigments nor IR transmitting organic dyes.
- the lower service temperature may improve chemical resistance by reducing the thermodynamic free energy of mixing between the polymeric exterior paneling and the chemical to which the polymer substrate is exposed.
- the lower service temperature may significantly reduce the penetration of chemicals into the exterior paneling, defer the potential degradation caused by these chemicals, and reduces the temperature differences between the layers within the exterior paneling, which may be a multilayer structure, to minimize the possibility of a delamination failure within the exterior paneling.
- Lower service temperature may also reduce the temperature difference between the exterior paneling and any supporting material to which the exterior panel may be adhered, such as metal, to minimize the possibility of delamination failure of the adhesive interface.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
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US17/609,942 US20220212454A1 (en) | 2019-05-17 | 2020-05-14 | Thin multi-layer paneling structure |
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US201962849333P | 2019-05-17 | 2019-05-17 | |
PCT/US2020/032776 WO2020236499A1 (fr) | 2019-05-17 | 2020-05-14 | Structure de panneau multicouche mince |
US17/609,942 US20220212454A1 (en) | 2019-05-17 | 2020-05-14 | Thin multi-layer paneling structure |
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US (1) | US20220212454A1 (fr) |
EP (1) | EP3969278A4 (fr) |
KR (1) | KR20220024077A (fr) |
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US20080242782A1 (en) * | 2006-07-17 | 2008-10-02 | Degussa Gmbh | Compositions comprising an organic polymer as the matrix and inorganic particles as the filler, process for the preparation thereof and applications of the same |
KR20100050874A (ko) * | 2008-11-06 | 2010-05-14 | 제일모직주식회사 | 충격보강제, 그 제조방법 및 이를 이용한 메타크릴계 수지 조성물 |
US20150352818A1 (en) * | 2013-01-15 | 2015-12-10 | Arkema France | Multilayer composite composition, its manufacturing process, and article obtained thereof |
US20170036428A1 (en) * | 2014-04-17 | 2017-02-09 | Arkema France | Weatherable first surface over a tie layer over a pultruded substrate |
US20210355294A1 (en) * | 2017-01-16 | 2021-11-18 | Arkema Inc. | High gloss, abrasion resistant thermoplastic article |
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US5322899A (en) * | 1992-07-21 | 1994-06-21 | Ppg Industries, Inc. | Fluoropolymer blend for coextrusion onto thermoplastic substrates |
US8399573B2 (en) * | 2006-11-22 | 2013-03-19 | Sabic Innovative Plastics Ip B.V. | Polymer blend compositions |
EP2326436A2 (fr) * | 2008-05-06 | 2011-06-01 | Andrew Armstrong | Méthode pour nettoyage et vitrification d' une surface dure pour améliorer sa qualité |
EP2970646B1 (fr) * | 2013-03-14 | 2020-08-19 | Braskem America, Inc. | Copolymères résistant au choc de polypropylène ayant un faible trouble |
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2020
- 2020-05-14 KR KR1020217041361A patent/KR20220024077A/ko active Search and Examination
- 2020-05-14 EP EP20809856.6A patent/EP3969278A4/fr active Pending
- 2020-05-14 US US17/609,942 patent/US20220212454A1/en not_active Abandoned
- 2020-05-14 WO PCT/US2020/032776 patent/WO2020236499A1/fr unknown
- 2020-05-14 CN CN202080036784.7A patent/CN114945469A/zh active Pending
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US20080242782A1 (en) * | 2006-07-17 | 2008-10-02 | Degussa Gmbh | Compositions comprising an organic polymer as the matrix and inorganic particles as the filler, process for the preparation thereof and applications of the same |
KR20100050874A (ko) * | 2008-11-06 | 2010-05-14 | 제일모직주식회사 | 충격보강제, 그 제조방법 및 이를 이용한 메타크릴계 수지 조성물 |
US20150352818A1 (en) * | 2013-01-15 | 2015-12-10 | Arkema France | Multilayer composite composition, its manufacturing process, and article obtained thereof |
US20170036428A1 (en) * | 2014-04-17 | 2017-02-09 | Arkema France | Weatherable first surface over a tie layer over a pultruded substrate |
US20210355294A1 (en) * | 2017-01-16 | 2021-11-18 | Arkema Inc. | High gloss, abrasion resistant thermoplastic article |
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Title |
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Machine translation of KR 2010-0050874 (Year: 2010) * |
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EP3969278A1 (fr) | 2022-03-23 |
EP3969278A4 (fr) | 2023-06-28 |
CN114945469A (zh) | 2022-08-26 |
WO2020236499A1 (fr) | 2020-11-26 |
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