WO2014193572A1 - Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods - Google Patents

Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods Download PDF

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Publication number
WO2014193572A1
WO2014193572A1 PCT/US2014/035400 US2014035400W WO2014193572A1 WO 2014193572 A1 WO2014193572 A1 WO 2014193572A1 US 2014035400 W US2014035400 W US 2014035400W WO 2014193572 A1 WO2014193572 A1 WO 2014193572A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
silica
pva
substrate
silica nanoparticles
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.)
Ceased
Application number
PCT/US2014/035400
Other languages
English (en)
French (fr)
Inventor
Justin A. Riddle
Paul B. ARMSTRONG
Karan JINDAL
Samuel J. CARPENTER
Garry W. Lachmansingh
William R. Dudley
Jason T. Petrin
Naiyong Jing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to EP14726488.1A priority Critical patent/EP3004256A1/en
Priority to US14/893,232 priority patent/US10040953B2/en
Priority to JP2016516659A priority patent/JP2016529085A/ja
Priority to CN201480029815.0A priority patent/CN105246984A/zh
Publication of WO2014193572A1 publication Critical patent/WO2014193572A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1693—Antifouling paints; Underwater paints as part of a multilayer system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/586—No clear coat specified each layer being cured, at least partially, separately
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/42—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
    • 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
    • C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
    • 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
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • 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
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • 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
    • C08J7/054—Forming anti-misting or drip-proofing coatings
    • 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
    • C08J7/056—Forming hydrophilic coatings
    • 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
    • C09D129/00—Coating compositions based on 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C09D5/002—Priming paints
    • 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
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
    • C09D5/1612—Non-macromolecular compounds
    • C09D5/1618—Non-macromolecular compounds inorganic
    • 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
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662—Synthetic film-forming substance
    • C09D5/1668—Vinyl-type polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2507/00—Polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2518/00—Other type of polymers
    • B05D2518/10—Silicon-containing polymers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/425—Coatings comprising at least one inhomogeneous layer consisting of a porous layer

Definitions

  • Articles having multilayer poly(vinyl alcohol) (PVA) and silica nanoparticle coatings are provided. More specifically, the articles include a substrate and a multilayer coating attached to the substrate.
  • the multilayer coating includes a silica layer comprising a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network.
  • the multilayer coating also includes a first poly(vinyl alcohol) (PVA) layer disposed between a surface of the substrate and the silica layer.
  • the silica layers of the acid-sintered silica nanoparticles generally do not include an organic binder. Rather, any organic materials present in the silica layer are simply located within various pores (e.g., voids) of the interconnected network. Further, fumed silica particles are formed at relatively high temperatures such as at temperatures greater than 300°C, greater than 400°C, or greater than 500°C. In contrast, the acid-sintered layer is formed by sintering the silica nanoparticles at relatively low temperatures such as at or near room temperature in the presence of an acid.
  • any suitable silica nanoparticles may be included in a PVA layer or a silica layer, for example and without limitation commercially available silica nanoparticles, acid-sintered silica nanoparticles, etc.
  • the silica nanoparticles are optionally acid-sintered or not acid-sintered silica nanoparticles, but preferably acid-sintered silica nanoparticles.
  • a layer is referred to as an "intermediary layer" regardless of how much PVA, silica nanoparticles, or combinations thereof that the layer contains with the proviso that it is positioned anywhere other than as the outermost layer of the multilayer coating (i.e. attached to a major surface of a substrate or located anywhere between a substrate and an outermost layer), as previously defined.
  • Item 1 is an article including a substrate, a multilayer coating attached to the substrate, the multilayer coating including a first silica layer that is an outermost layer of the multilayer coating, the first silica layer comprising a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network.
  • the multilayer coating also includes a first poly(vinyl alcohol) (PVA) layer disposed between a surface of the substrate and the outermost silica layer.
  • PVA poly(vinyl alcohol)
  • Item 21 is an article of any one of items 1 to 20, wherein the silica nanoparticles comprise acicular silica particles.
  • Item 22 is an article of any one of items 1 to 21 , wherein the substrate is at least one of a polymeric film, a polymeric sheet, a molded polymeric part, a metal, paper, a UV mirror, a UV stable substrate, a glass substrate, a mirror, a display, a window, or a release liner.
  • Item 28 is a method of any one of items 25 to 27, wherein the second silica layer comprises a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network.
  • Item 30 is a method of any one of items 25 to 29, further including crosslmking the PVA.
  • Item 33 is a method of any one of items 25 to 32, wherein the first PVA layer further contains a plurality of silica nanoparticles.
  • the second coating solution of PE 10 (i.e., the first PVA coating composition) was delivered at a rate of 36 cc/min to a 8 inch (20.32 cm) wide slot-type coating die.
  • the coated web travelled a 10 ft (3 m) span in the room environment, and then passed through twenty feet of air flotation ovens set at 120°C.
  • the substrate was moving at a speed of 20 ft/min (6.1 m/min) to achieve a wet coating thickness of approximately 29.1 ⁇ (dry thickness calculated to be 1.5 ⁇ ).

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Dispersion Chemistry (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Silicon Compounds (AREA)
PCT/US2014/035400 2013-05-30 2014-04-25 Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods Ceased WO2014193572A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14726488.1A EP3004256A1 (en) 2013-05-30 2014-04-25 Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods
US14/893,232 US10040953B2 (en) 2013-05-30 2014-04-25 Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods
JP2016516659A JP2016529085A (ja) 2013-05-30 2014-04-25 ポリ（ビニルアルコール）及びシリカナノ粒子多層コーティング及び方法
CN201480029815.0A CN105246984A (zh) 2013-05-30 2014-04-25 聚(乙烯醇)和二氧化硅纳米粒子多层涂层及方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361828832P 2013-05-30 2013-05-30
US61/828,832 2013-05-30

Publications (1)

Publication Number Publication Date
WO2014193572A1 true WO2014193572A1 (en) 2014-12-04

Family

ID=50819977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/035400 Ceased WO2014193572A1 (en) 2013-05-30 2014-04-25 Poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods

Country Status (5)

Country Link
US (1) US10040953B2 (enExample)
EP (1) EP3004256A1 (enExample)
JP (1) JP2016529085A (enExample)
CN (1) CN105246984A (enExample)
WO (1) WO2014193572A1 (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160340551A1 (en) * 2015-05-19 2016-11-24 Eternal Materials Co., Ltd. Coating composition for enhancing light transmittance and coating layer formed therefrom
JP2018034363A (ja) * 2016-08-30 2018-03-08 アイシン精機株式会社 機能性被膜及び機能性被膜の製造方法
US9926458B2 (en) 2013-05-30 2018-03-27 3M Innovative Properties Company Poly(vinyl alcohol)-containing and silica nanoparticle multilayer coatings and methods
US9925560B2 (en) 2013-05-30 2018-03-27 3M Innovative Properties Company Crosslinked poly(vinyl alcohol) and silica nanoparticle multilayer coatings and methods

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CN106076775A (zh) * 2016-07-01 2016-11-09 惠州联顺电子有限公司 一种防止涂层开裂的涂覆工艺
JP2018065990A (ja) * 2016-10-18 2018-04-26 積水フィルム株式会社 防曇性組成物及び防曇性フィルム
US20200171534A1 (en) * 2018-03-21 2020-06-04 Bar-Ilan University In-site thin coating of silica particles onto plastic films and their applications
KR102316018B1 (ko) * 2018-11-23 2021-10-22 주식회사 엘지화학 광학 적층체
JP2020157626A (ja) * 2019-03-27 2020-10-01 キヤノン株式会社 光学部材およびその保護方法
JP7340148B2 (ja) * 2020-01-14 2023-09-07 トヨタ自動車株式会社 樹脂多孔質体の製造方法

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