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WO2025168513A1 - Procédé de production d'une pièce en polyoléfine, pièce en polyoléfine et utilisation associée - Google Patents

Procédé de production d'une pièce en polyoléfine, pièce en polyoléfine et utilisation associée

Info

Publication number
WO2025168513A1
WO2025168513A1 PCT/EP2025/052731 EP2025052731W WO2025168513A1 WO 2025168513 A1 WO2025168513 A1 WO 2025168513A1 EP 2025052731 W EP2025052731 W EP 2025052731W WO 2025168513 A1 WO2025168513 A1 WO 2025168513A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyolefin
primer
propane
base coat
gas
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.)
Pending
Application number
PCT/EP2025/052731
Other languages
English (en)
Inventor
Jana HRACHOVÁ
Hans LEENDERS
Ting Huang
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.)
SABIC Global Technologies BV
Original Assignee
SABIC Global Technologies BV
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 SABIC Global Technologies BV filed Critical SABIC Global Technologies BV
Publication of WO2025168513A1 publication Critical patent/WO2025168513A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C08J7/12—Chemical modification
    • C08J7/123—Treatment by wave energy or particle radiation
    • 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
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/08—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by flames
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/142—Pretreatment
    • B05D3/144—Pretreatment of polymeric substrates
    • 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
    • B05D7/53—Base coat plus clear coat type
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J7/12—Chemical modification
    • C08J7/126—Halogenation

Definitions

  • Amorphous materials like polycarbonate, with high light transparency can be used in automotive parts such as trims, smart bumpers, etc. with integrated lighting systems (backlit panels), e.g., for various indicators (charging, welcome). Such automotive parts can further be enhanced by decoration technologies like laser etching, e.g., ablation, film over-molding, or a combination thereof.
  • amorphous materials like polycarbonate used for lighting effects e.g., hidden until lit
  • a process for producing a polyolefin part including treating a surface of the polyolefin part to provide an activated polyolefin surface; applying a primer directly on the activated polyolefin surface; applying a base coat directly on the primer; and removing a portion of the base coat by laser etching while retaining at least a portion of the primer present between the base coat and the activated polyolefin surface; and applying a clear coat directly on remaining base coat and exposed primer.
  • the polyolefin can have a haze of 73 to 100% and transmittance of 40 to 70%.
  • the primer can have a transparency of 40 to 100%.
  • the primer can include 2-2-butoxyethoxy)ethanol.
  • a thickness of greater than or equal to 1 micrometers of the primer present between the base coat and the activated polyolefin surface can be retained.
  • the clear coat can include an acrylic monomer, an epoxy, a polyurethane, a polysiloxane or a combination thereof.
  • the polyolefin part can be a vehicle part.
  • the present inventors made a surprising discovery that a base coat applied on a primer applied to a polyolefin part can be removed (e.g., laser etched or ablated) without also removing the primer underneath the base coat. Accordingly, a desired polyolefin part can be produced without a second activation of a polyolefin surface after laser etching, e.g., ablation, of a base coat applied to a plastic part. Such second activation would otherwise be performed to ensure adherence of a clear coat on a polyolefin surface from which paint is removed.
  • the process can include (i) treatment, e.g., surface activation, of polyolefin; (ii) application of primer and base coat (black or colored) to the polyolefin; (iii) removal of the base coat by laser etching, e.g., ablation, to expose primer; (iv) application of a clear coat on remaining base coat and exposed primer.
  • the polyolefin can be translucent and the primer can be transparent and the base coat can be removed from areas of the part to be backlit, e.g., exposing a lighting feature located behind the polyolefin part.
  • a combination of polypropylene and polyethylene can include a heterophasic propylene copolymer or polypropylene impact copolymer, which is a polypropylene blended with an elastomer impact modifier, such as polyethylene particles, C 2 -C 8 (ethylene-octene copolymer) elastomer impact modifier or C 2 -C 4 (ethylene-butene copolymer) impact modifier or SEBS (styrene ethylene butadiene styrene) impact modifier.
  • an elastomer impact modifier such as polyethylene particles, C 2 -C 8 (ethylene-octene copolymer) elastomer impact modifier or C 2 -C 4 (ethylene-butene copolymer) impact modifier or SEBS (styrene ethylene butadiene styrene) impact modifier.
  • the polyolefin can optionally be reinforced, e.g., with fibers, particles, flakes, or a combination thereof, such as especially for example, long glass fibers, short glass fibers, glass beads, talc, mica, inorganic fillers, natural fibers, conductive fillers, carbon fibers, or a combination thereof.
  • the polyolefin can be a STAMAX® material, a long glass fiber reinforced polypropylene commercially available from SABIC.
  • the polyolefin can be translucent and can include a polypropylene compound or a co-polymer thereof.
  • the translucent polyolefin part can include a translucent polypropylene compound, such as QRYSTALTM by SABIC. Translucency can be affected by fillers such as fibers, particles, flakes, or a combination thereof, which can be omitted from translucent polyolefin.
  • propane-containing gas being propane or a mixture including at least 50 wt. % of propane the surface being treated is activated.
  • the gas including propane can include at least 80 wt. % of propane, or at least 95 wt. % of propane, such as for example, at least 99 wt. % of propane or even 100 wt. % of propane.
  • a flame is produced by burning a mixture of air and the gas including propane, wherein the gas-to-air ratio is chosen such that the propane to oxygen ratio is equal to or less than 1 : 5.01 . This also contributes to a further activation of the surface being treated.
  • a burner can be used for producing the flame, said burner including at least one nozzle for providing a mixture of air and the gas including propane to be burned.
  • the gap between the at least one nozzle and the surface being treated influences the extent of activation accomplished by the flame treatment. A too large distance between the cone of the flame and surface being treated causes the surface activation to decrease. A too low distance between the cone of the flame and the surface being treated can damage the surface.
  • the surface can also be activated using a different activation method, by treating said surface with e.g., atmospheric plasma, low pressure plasma, with a coronatreatment or by fluorination.
  • a different activation method by treating said surface with e.g., atmospheric plasma, low pressure plasma, with a coronatreatment or by fluorination.
  • a primer also known as an adhesion promoter, is a preparatory coating that is applied onto a bonding surface before contacting the surface with a bonding agent or base coat, to improve adhesion of the bonding agent or base coat to the bonding surface.
  • the primer can be colored, black, or transparent.
  • the polyolefin can be translucent and the primer can be transparent and areas of the polyolefin can be backlit, e.g., exposing a lighting feature located behind the polyolefin part.
  • a thickness of the primer can be, for example, 2 micrometers (pm) to 50 pm, 10 pm to 40 pm, or 15 pm to 30 pm.
  • “transparent” can refer to a material property comprising at least one of: a visible light transmission equal to or greater than 40%; and a haze equal or greater than 60 %.
  • the primer can have a transparency of 40 to 100%.
  • the basecoat can be a synthetic resin, e.g., waterborne.
  • the basecoat can include, for example, butan-1-ol, 2-(2-butoxyethoxy)ethanol, propan-2-ol, and 2-dimethylaminoethanol.
  • the base coat can be any desired color.
  • a thickness of the base coat can be, for example, 5 pm to 50 pm, 10 pm to 40 pm, or 10 pm to 20 pm.
  • the clear coat includes a transparent polymer.
  • Any suitable transparent polymer can be used. Examples include, but are not limited to, an acrylic monomer, an epoxy, a polyurethane, a polysiloxane or a combination thereof.
  • the clear coat can provide, for example, scratch resistance, ultraviolet (UV) resistance, or a combination thereof.
  • the clear coat can help render the polyolefin part suitable for environmental exposure.
  • a thickness of the clear coat can be, for example, 5 pm to 50 pm, for example, 25 pm to 45 pm, or 30 pm to 45 pm.
  • the polyolefin part, as disclosed herein, can be translucent and used to integrate lighting, functional features, ornamental elements, or a combination thereof into an assembly, e.g., of a front cover of a vehicle, for example, an electric vehicle.
  • the translucent polyolefin part can be transparent.
  • Translucency is a superset of transparency.
  • a translucent medium allows the transport of light while a transparent medium not only allows the transport of light but also allows for image formation.
  • a transparent medium is also translucent, but a translucent medium can be transparent, but is not necessarily so.
  • Opacity is the opposite of translucency.
  • the translucent polyolefin can have a transmittance of visible light above 10%.
  • Opaque is defined as having a visible light transmittance of up to 10%.
  • the transparent portion is optically transparent, i.e. it is transparent to at least light visible to the human eye, and can have a transmittance of visible light above 30%.
  • the assembly can further include a light module.
  • the translucent polyolefin part can form part of the light module, such as a light emitting diode (LED) light module.
  • the light module can include a reflector and a lighting member.
  • the invention also relates to a vehicle, e.g., an electric vehicle, including an assembly as described herein.
  • the assembly can form part of a front fascia of the vehicle, where fascia is a general term for a set of front-end components of the vehicle.
  • the assembly can be part of the front fascia of the vehicle.
  • the assembly can replace the grille of the vehicle.
  • a pair of headlights can flank the assembly.
  • the assembly can be placed between the headlights of the vehicle.
  • the front panel assembly can extend between a bumper fascia and a front window of the vehicle.
  • the assembly can be adjacent to the bumper fascia, e.g., a covering of the bumper beam, and can further extend over the front of the vehicle up to a lower edge of
  • the clear coat can be present directly on the exposed primer in an area corresponding to a sensor accommodating portion, a light accommodating portion, a camera accommodating portion, a display accommodating portion, a receiver accommodating portion, a transmitter accommodating portion, or a combination thereof.
  • a translucent polypropylene plaque (145 x 210 millimeters, thickness 3.2 millimeters (mm)) was formed by injection molding.
  • the plaque was coated with primer (thickness 19 to 22 micrometers (pm)) and a black base coat (thickness 16 to 19 pm).
  • top black base coat was removed by laser ablation (infrared laser, having a wavelength of 1 ,064 nanometers, optic type f 450 for coating ablation in day/night processing mode) to a cleanness level that black color was not visible on the surface and with minimal removal of primer layer underneath.
  • laser ablation infrared laser, having a wavelength of 1 ,064 nanometers, optic type f 450 for coating ablation in day/night processing mode
  • Analysis of the samples was conducted by microscope in cross-section. A line between the polypropylene and primer was clearly visible in the cross-section. No black base coat residue was visible on the surface in the ablated area using a light microscope. Measurements were taken at various locations on the sample, with a summary provided in Table 1.
  • autonomous or “automobile(s)” or “vehicle(s)” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum).
  • a hybrid vehicle is a vehicle that has two or more sources of power, for example, both gasoline-powered and electric-powered vehicles.
  • compositions, methods, and articles can alternatively comprise, consist of, or consist essentially of, any appropriate components or steps herein disclosed.
  • the compositions, methods, and articles can additionally, or alternatively, be formulated so as to be devoid, or substantially free, of any steps, components, materials, ingredients, adjuvants, or species that are otherwise not necessary to the achievement of the function or objectives of the compositions, methods, and articles.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Un procédé de production d'une partie polyoléfine comprend le traitement d'une surface de la partie polyoléfine pour fournir une surface de polyoléfine activée ; l'application d'une amorce directement sur la surface de polyoléfine activée ; l'application d'une couche de base directement sur l'amorce ; et l'élimination d'une partie de la couche de base par gravure laser tout en retenant au moins une partie de l'amorce présente entre la couche de base et la surface de polyoléfine activée ; et l'application d'une couche transparente directement sur la couche de base restante et l'amorce exposée.
PCT/EP2025/052731 2024-02-05 2025-02-04 Procédé de production d'une pièce en polyoléfine, pièce en polyoléfine et utilisation associée Pending WO2025168513A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CNPCT/CN2024/076000 2024-02-05
CN2024076000 2024-02-05
EP24161271.2 2024-03-04
EP24161271 2024-03-04

Publications (1)

Publication Number Publication Date
WO2025168513A1 true WO2025168513A1 (fr) 2025-08-14

Family

ID=94478557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/052731 Pending WO2025168513A1 (fr) 2024-02-05 2025-02-04 Procédé de production d'une pièce en polyoléfine, pièce en polyoléfine et utilisation associée

Country Status (1)

Country Link
WO (1) WO2025168513A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016023760A1 (fr) * 2014-08-11 2016-02-18 Lisa Dräxlmaier GmbH Substrat pourvu d'un revêtement et procédé de fabrication de celui-ci
WO2017076772A1 (fr) 2015-11-02 2017-05-11 Sabic Global Technologies B.V. Objet diffusant la lumière
WO2017076770A1 (fr) 2015-11-02 2017-05-11 Sabic Global Technologies B.V. Article de diffusion de lumière
WO2018019764A1 (fr) 2016-07-29 2018-02-01 Sabic Global Technologies B.V. Article diffusant la lumière
WO2019043087A1 (fr) 2017-09-01 2019-03-07 Sabic Global Technologies B.V. Composition de polypropylène
WO2023117034A1 (fr) * 2020-12-17 2023-06-29 Akzo Nobel Coatings International B.V. Système de revêtement multicouche pour substrats en polycarbonate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016023760A1 (fr) * 2014-08-11 2016-02-18 Lisa Dräxlmaier GmbH Substrat pourvu d'un revêtement et procédé de fabrication de celui-ci
WO2017076772A1 (fr) 2015-11-02 2017-05-11 Sabic Global Technologies B.V. Objet diffusant la lumière
WO2017076770A1 (fr) 2015-11-02 2017-05-11 Sabic Global Technologies B.V. Article de diffusion de lumière
WO2018019764A1 (fr) 2016-07-29 2018-02-01 Sabic Global Technologies B.V. Article diffusant la lumière
WO2019043087A1 (fr) 2017-09-01 2019-03-07 Sabic Global Technologies B.V. Composition de polypropylène
WO2023117034A1 (fr) * 2020-12-17 2023-06-29 Akzo Nobel Coatings International B.V. Système de revêtement multicouche pour substrats en polycarbonate

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