Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/004—Reflecting paints; Signal paints
• • 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
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/02—Physical, chemical or physicochemical properties
  • B32B7/023—Optical properties
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
• • 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
  • B32B27/065—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 foam
• • 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
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
  • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• • 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
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
  • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
• • 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
  • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
  • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
• • 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
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
• • 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
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• • 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
  • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08J7/04—Coating
  • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/18—Fireproof paints including high temperature resistant paints
• • 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
  • B32B2266/00—Composition of foam
  • B32B2266/02—Organic
  • B32B2266/0214—Materials belonging to B32B27/00
  • B32B2266/0221—Vinyl resin
  • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/40—Properties of the layers or laminate having particular optical properties
  • B32B2307/416—Reflective
• • 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
  • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
  • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
  • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
  • C08J2333/12—Homopolymers or copolymers of methyl methacrylate
• • 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
  • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
• • 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
  • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
  • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
  • C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
  • C08J2427/06—Homopolymers or copolymers of vinyl chloride

Definitions

• the invention relates to vinyl articles having improved solar reflectivity.
• Vinyl articles particularly vinyl substrates exposed to sunlight such as vinyl siding and trim, often suffer from defects due to the solar radiation.
• a common defect in vinyl sidings is called “oil canning”. Oil canning is manifested in appearance of surface bulges, waves and ripples in the vinyl plank while in use. The oil canning is caused by the temperature rise due to solar radiation.
• One aspect of the invention relates to a vinyl article comprising a vinyl substrate and an infrared reflective film disposed on the vinyl substrate.
• the infrared reflective film has a reflectivity greater than 30% for wavelengths between 800 and 1000 nm and a transmittance greater than 60% for wavelengths between 400 and 700 nm.
• a further aspect of the invention relates to a process for producing a vinyl article comprising providing a vinyl substrate, and laminating an infrared reflective film on the vinyl substrate.
• the infrared reflective film has a reflectivity greater than 30% for wavelengths between 800 and 1000 nm and a transmittance greater than 60% for wavelengths between 400 and 700 nm.
• FIG. 1 is an AFM image of an infrared reflective film according an embodiment of the invention.
• FIG. 2 is a specular reflection spectrum of an infrared reflective film according to an embodiment of the invention.
• IR reflective film that is reflective in the near infrared (IR) range (i.e., IR reflective) to the vinyl article. Because 50% of the solar energy resides in the wavelength between 750 nm to 1200 nm, the IR reflective film can reflect sunlight and reduce the surface temperature of the vinyl article. This improvement can be achieved on vinyl article articles of all colors without significantly altering the appearance of the underlying vinyl substrate and without requiring alteration of the composition of the underlying vinyl substrate.
• polymer refers to a polymeric compound prepared by polymerizing monomers, whether of the same or a different type.
• the generic term “polymer” includes the terms “homopolymer,” “copolymer,” and “resin.”
• polymerized units derived from refers to polymer molecules that are synthesized according to polymerization techniques wherein a product polymer contains “polymerized units derived from” the constituent monomers which are the starting materials for the polymerization reactions.
• (meth) acrylate refers to either acrylate or methacrylate or combinations thereof
• (meth) acrylic refers to either acrylic or methacrylic or combinations thereof.
• substituted refers to having at least one attached chemical group, for example, alkyl group, alkenyl group, vinyl group, hydroxyl group, carboxylic acid group, other functional groups, and combinations thereof.
• weight average molecular weight refers to the weight average molecular weight of a polymer as measured by gel permeation chromatography (“GPC”), for acrylic polymers against polystyrene calibration standards following ASTM D5296-11 (2011), and using tetrahydrofuran (“THF”) as the mobile phase and diluent.
• GPC gel permeation chromatography
• THF tetrahydrofuran
• weight of polymer means the dry weight of the polymer.
• the polymer composition contains little or no” of a certain substance
• the polymer composition contains none of that substance, or, if any of that substance is present in the present composition, the amount of that substance is 1 % or less by weight, based on the weight of the polymer composition.
• embodiments that are described herein as having “little or no” of a certain substance embodiments are envisioned in which there is none of that certain substance.
• a vinyl article comprising a vinyl substrate and an infrared reflective film disposed on the vinyl substrate.
• the vinyl substrate comprises a polyvinyl chloride (PVC) substrate.
• PVC polyvinyl chloride
• the composition of the vinyl substrate is not limited and may comprise any vinyl polymer known in the art.
• the vinyl substrate is a plank of vinyl siding, architectural trim, or foamed vinyl substrates (e.g., PVC foam board used in decking material, fascia pergola, and other exterior building products).
• the infrared reflective film has a reflectivity greater than 30% for wavelengths between 800 and 1000 nm, which comprises wavelengths in the near IR region.
• the infrared reflective film has a reflectivity greater than 40% for wavelengths between 800 and 1000 nm. More preferably, the infrared reflective film has a reflectivity greater than 50% for wavelengths between 800 and 1000 nm. Even more preferably, the infrared reflective film has a reflectivity greater than 60% for wavelengths between 800 and 1000 nm.
• Reflectivity/transmittance is measured using a PerkinElmer Lambda 950 UV-Vis-NIR spectrometer and a 60 mm Integrated Sphere Accessory at a resolution (slit width) of 2 nm and a data interval of 2 nm.
• the detector response time was 0.2 sec and 8° of reflection/transmission data was collected.
• the infrared reflective film has a transmittance greater than 60% for wavelengths between 400 and 700 nm, i.e., the visible region.
• the infrared reflective film has a transmittance greater than 70% for wavelengths between 400 and 700 nm. More preferably, the infrared reflective film has a transmittance greater than 80% for wavelengths between 400 and 700 nm.
• the thickness of the infrared reflective film ranges from 5 microns to 100 microns.
• the thickness of the infrared reflective film may be at least 10 microns, at least 20 microns, at least 30 microns, or at least 40 microns, and the thickness of the infrared reflective film may be less than 100 microns, less than 90 microns, less than 80 microns, less than 70 microns, or less than 60 microns.
• the infrared reflective film comprises a first polymeric material having a refractive index, nl, and a second refractive index, n2.
• the refractive index contrast, nl/n2 is preferably greater than 1.04. More preferably, the refractive index contrast is greater than 1.05. Even more preferably, the refractive index contrast is greater than 1.06.
• the first polymeric material has a refractive index, nl, greater than 1.5.
• the first polymeric material include, but are not limited to, polycarbonate, polyethylene naphthalate, polystyrene, polyethylene terephthalate, polysulfone, polyamide, cyclic polyolefins, polyvinyl chloride, poly vinylidene chloride.
• the first polymeric material comprises polycarbonate, which has a refractive index of 1.58.
• the second polymeric material has a refractive index, n2, less than 1.5.
• the second polymeric material include, but are not limited to, poly(methyl methacrylate), polyvinylidene fluoride, and polyethylene oxides.
• the second polymeric material comprises poly(methyl methacrylate), which has a refractive index of about 1.49.
• the first polymeric material of the infrared reflective film comprises polycarbonate and the second polymeric material comprises poly(methyl methacrylate), such that the infrared reflective film has a refractive index contrast (nl/n2) of about 1.06.
• infrared reflective film comprises a plurality of alternating layers of the first polymeric material and the second polymeric material.
• Each of the alternating layers may have an average thickness ranging from 100 to 250 nm, preferably from 110 to 225 nm, and more preferably from 120 to 200 nm.
• the “average thickness” of the layers means the arithmetic mean of all of the layers in the infrared reflective film is between the stated range.
• each layer in the infrared reflective film has a thickness variation of less than 50% of the average thickness of all of the layers.
• the infrared reflective film preferably comprises 50 to 400 alternating layers of the first and second polymeric materials, i.e., 25 to 200 layers of each of the materials.
• Another aspect of the present invention relates to a process for producing a vinyl article.
• the process comprises providing a vinyl substrate and laminating an infrared reflective film, as described above, on the vinyl substrate.
• providing a vinyl substrate means that a vinyl substrate is produced or acquired for use in the process, but does not require the vinyl substrate to be produced by the method.
• a vinyl substrate may be produced and shipped to the location where the infrared reflective film is laminated onto the vinyl substrate.
• laminating means that the infrared reflective film is bonded to the vinyl substrate, such as, for example, using an adhesive.
• the infrared reflective film may be prepared, for example, by extrusion.
• First and second polymeric materials may be coextruded to form an infrared reflective film comprised of alternating layers.
• the extruded film may be cooled down on a chill roll to form the infrared reflective film.
• the infrared reflective film may be adhered to a surface of the vinyl substrate.
• An appropriate adhesive such as, for example, a water borne acrylic binder adhesive, can be used to adhere the infrared reflective film to the vinyl substrate.
• a coextrusion line was utilized for the microlayer extrusion trial and consisted of two 31.75 mm (1.25 inch) diameter, 24:1 L/D single screw extruders.
• the extruders fed individual gear pumps to ensure uniform flow of the polymer melts to the feed block and dies.
• a precision feedring was used to produce layered coextruded structures with 100 or 200 layers. They were merged with skin layers (50% by volume) and extruded at 20 Ib/h from an 8-inch wide film die to 12-50 micron thick films. Extruder and die temperatures were set at 243 °C. Extruded films were cooled down on a chill roll set at 104 °C.
• FIG. 2 shows a specular reflection spectrum of an infrared reflective film according to an embodiment of the invention.
• the infrared reflective film of the invention has significant solar reflectivity and is clear in the visible range.
• the samples having the inventive infrared reflection films have a lower temperature than the control samples at the same sun exposure condition.
• the temperature of all the samples after sun exposure is less than 63 °C.
• the temperature difference between the examples and comparative examples depends on the color (NIR spectrum included) of the vinyl product.
• the Product “Redwood” showed the largest temperature difference of 8 °C under direct sunlight exposure.
• the lowered temperature provided by the inventive infrared reflection films is expected to prevent the oil canning of PVC vinyl siding.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Laminated Bodies (AREA)
• Optical Filters (AREA)

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Citations (4)

• 2022
  • 2022-11-17 JP JP2024527107A patent/JP2024541752A/ja active Pending
  • 2022-11-17 CN CN202280069880.0A patent/CN118103461A/zh active Pending
  • 2022-11-17 EP EP22844592.0A patent/EP4433546A1/en active Pending
  • 2022-11-17 US US18/709,114 patent/US20250026935A1/en active Pending
  • 2022-11-17 KR KR1020247019533A patent/KR20240112292A/ko active Pending
  • 2022-11-17 WO PCT/US2022/050173 patent/WO2023091531A1/en not_active Ceased

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