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    MULTI-LAYER COATING SYSTEM FOR POLYCARBONATE SUBSTRATES
    1.
    发明申请
    MULTI-LAYER COATING SYSTEM FOR POLYCARBONATE SUBSTRATES 有权

    公开(公告)号：US20250059398A1

    公开(公告)日：2025-02-20

    申请号：US18719771

    申请日：2021-12-20

    Applicant: Akzo Nobel Coatings International B.V.

    Inventor： Martijn Jelle Smit

    IPC: C09D175/04 ,  C08J7/04 ,  C08J7/043 ,  C09D5/08

    Abstract: The disclosure relates to a multi-layer coating system on a polycarbonate substrate, comprising: a primer layer applied directly to the substrate, wherein the primer layer is obtained from a primer coating composition, which comprises at least one polyaspartic acid ester and at least one polyisocyanate crosslinker, which primer coating composition does not comprise epoxy-functional alkoxysilanes and is free from compounds with reactive OH groups, and at least one organic topcoat layer overlying the primer layer, which organic topcoat layer is obtained from a coating composition different from the primer composition.

    One-component moisture-curable adhesive composition
    2.
    发明授权
    One-component moisture-curable adhesive composition 有权

    公开(公告)号：US12091587B2

    公开(公告)日：2024-09-17

    申请号：US18577455

    申请日：2022-07-13

    Applicant: Akzo Nobel Coatings International B.V.

    Inventor： Shahin Akhlaghi ,  Hendrica Petronella Maria Verlaan-Hooft

    IPC: C09J175/08 ,  B27G11/00 ,  C09J7/10

    CPC classification number: C09J175/08 ,  B27G11/00 ,  C09J7/10 ,  C09J2203/346 ,  C09J2301/302 ,  C09J2301/50 ,  C09J2475/00

    Abstract: A one-component moisture-curing adhesive composition is provided, comprising from 80 to 100 wt % of an isocyanate-functional prepolymer obtainable by reacting (a) a polyisocyanates mixture having an average nominal isocyanate functionality in the range of from above 2.00 to below 2.05, and (b) a polyol mixture, wherein the equivalent ratio between isocyanate groups in (a) and hydroxyl groups in (b) is in the range of from 3.5 to 7.0, wherein the content of free isocyanate groups in the adhesive composition is in the range of from 14 to 17 wt %, and wherein polyisocyanates mixture (a) comprises (a1) a diisocyanate comprising methyl diphenyl diisocyanate in excess of (a2) a uretonimine-modified methyl diphenyl diisocyanate comprising at least 3 isocyanate functional groups. A method of bonding a first piece of material to a second piece of material using such adhesive composition, and an object made from the method, are also provided.

    Waterborne, UV Curable Coating Composition For Easy-Clean Coatings
    6.
    发明公开
    Waterborne, UV Curable Coating Composition For Easy-Clean Coatings 审中-公开

    公开(公告)号：US20240034906A1

    公开(公告)日：2024-02-01

    申请号：US17768542

    申请日：2020-10-13

    Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.

    Inventor： Zheng SHI ,  Quan James HUANG ,  Puxin FANG ,  Hong LIN ,  Junbiao LU

    IPC: C09D175/08 ,  C09D7/20 ,  C09D7/65

    CPC classification number: C09D175/08 ,  C09D7/20 ,  C09D7/65

    Abstract: The invention relates to the synthesis of a carboxyl-functional, unsaturated polyurethane containing a perfluoropolyether block, which can be used as an easy clean additive in preparation of a waterborne, UV curable coating composition. The polyurethane can be prepared by a method comprising the following steps: a) subjecting a hydroxy-terminated perfluoropolyether A to a reaction with a molar excess of polyisocyanate B to obtain an isocyanate-functional urethane C, b) adding a carboxyl-functional polyol D to the reaction mixture, c) adding OH— functional (meth)acrylate monomer E to the reaction mixture, wherein steps (b) and (c) can be performed in any order, and d) neutralizing the reaction product with a neutralizer F. The resulting coating has easy clean and anti-stain properties.

    Estimating Biofilm Biomass on Objects in an Aquatic Environment
    7.
    发明公开
    Estimating Biofilm Biomass on Objects in an Aquatic Environment 审中-公开

    公开(公告)号：US20230358689A1

    公开(公告)日：2023-11-09

    申请号：US18027189

    申请日：2021-09-29

    Applicant: Akzo Nobel Coatings International B.V.

    Inventor： Jennifer Elise LONGYEAR ,  Paul STOODLEY

    IPC: G01N21/94 ,  G01N21/31

    CPC classification number: G01N21/94 ,  G01N21/31 ,  G01N2021/945

    Abstract: System and method for estimating aquatic environment-originating biofilm biomass on a coating of an object. The method includes obtaining one or more digital images of a fouled portion of the coating on the object and determining from each of the one or more images a respective reflectance value for the portion of the coating. The method includes determining on the basis of the one or more reflectance values a value of a spectral index representative of biomass and calculating a biomass pigment surface area density on the basis of the spectral index, SI, and one or more calibration values determined for a reference coating. The method includes compensating the calculated biomass pigment surface area density for the reflectance of the coating of the object by applying a compensation associated with the difference of the reflectance of the coating of the object relative to the reference coating.

    Method For Determining Representative Colours From At Least One Digital Colour Image
    9.
    发明申请
    Method For Determining Representative Colours From At Least One Digital Colour Image 有权

    公开(公告)号：US20230136460A1

    公开(公告)日：2023-05-04

    申请号：US17918258

    申请日：2021-04-13

    Applicant: Akzo Nobel Coatings International B.V.

    Inventor： Peter Mark SPIERS ,  Arjan GIJSENIJ

    IPC: G06T7/90 ,  G06T11/00

    Abstract: The present invention relates to a computer implemented method for determining a predetermined number, k, of representative colours from at least one digital colour image, comprising the steps of: a) obtaining at least one digital colour image having a number, p, of pixels each pixel having a colour value within an n-dimensional colour space; b) defining a predetermined number of K cluster centres which are distributed in a predetermined pattern in the colour space, wherein K>k; c) forming clusters by associating for each pixel its colour value with the nearest of the cluster centres; d) reducing the number of clusters to k by deleting cluster centres and/or merging clusters; e) from each of the resulting k clusters defining a respective representative colour.

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