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    AMORPHOUS COPOLYESTER RESINS FOR USE AS A COLD SEAL ADHESIVE, COATING COMPOSITIONS
    12.
    发明公开
    AMORPHOUS COPOLYESTER RESINS FOR USE AS A COLD SEAL ADHESIVE, COATING COMPOSITIONS 审中-公开

    公开(公告)号：US20230383154A1

    公开(公告)日：2023-11-30

    申请号：US18032598

    申请日：2021-10-20

    Applicant: Bostik, Inc.

    Inventor： Deepa PUTHANPARAMBU ,  Tatiana KRETLOW ,  Joshua T. HARJU ,  Marie HUT

    IPC: C09J167/03

    CPC classification number: C09J167/03 ,  C09J2301/312

    Abstract: A method of adhering substrate surfaces to one another comprises applying a copolyester resin mixture to the surfaces and contacting the surfaces with one another in the absence of heat to form a cold seal. The copolyester resin may be sulfonated and the reaction product of (a) at least two diols comprising ethylene glycol at a mole fraction of at least about 0.25 and (b) at least three diacids or diesters comprising: (i) a sulfomonomer at a mole fraction of at least 0.02, preferably at least 0.07; (ii) at least one aromatic diacid or diester; and (iii) at least one aliphatic diacid or diester. The ratio of aromatic to aliphatic diacids or diesters may be between about 75/25 and about 45/55, and the glass transition temperature of the resin may be between about −25° C. and about 15° C. The resin may be solvated and preferably is food grade compliant and compostable.

    AMORPHOUS COPOLYESTER RESIN FOR INDUSTRIAL COATINGS AND METHODS FOR COATING A METAL SURFACE USING SUCH COATING COMPOSITIONS
    14.
    发明公开
    AMORPHOUS COPOLYESTER RESIN FOR INDUSTRIAL COATINGS AND METHODS FOR COATING A METAL SURFACE USING SUCH COATING COMPOSITIONS 审中-公开

    公开(公告)号：US20230257624A1

    公开(公告)日：2023-08-17

    申请号：US18015013

    申请日：2021-07-07

    Applicant: Bostik, Inc.

    Inventor： Joshua HARJU ,  Deepa PUTHANPARAMBIL

    IPC: C09D167/02 ,  C08G63/189 ,  C08G63/199

    CPC classification number: C09D167/02 ,  C08G63/189 ,  C08G63/199

    Abstract: A copolyester resin comprises the reaction product of at least two aliphatic diols and at least two aromatic diacids or diesters comprising a naphthalene-based monomer and terephthalic-based monomer and has a glass transition temperature between about 65° C. and about 95° C. A coating comprises a copolyester resin comprising the reaction product of at least two aliphatic diols and at least one aromatic diacid or diester comprising the naphthalene-based monomer; a cross-linker; and metal catalyst. The coating composition may be solvated and provides excellent retort resistance, flexibility, chemical resistance, and ability to bond to metal substrates, including tin-plated steel. The copolyester resin may be food grade compliant and alcohol compliant, making it suitable for use as a can coating, especially for beverages and even alcoholic beverages with no restrictions on the alcohol content.

    HOT MELT PRESSURE SENSITIVE ADHESIVES BASED ON ETHYLENE-ACRYLATE BLOCK COPOLYMERS
    15.
    发明申请
    HOT MELT PRESSURE SENSITIVE ADHESIVES BASED ON ETHYLENE-ACRYLATE BLOCK COPOLYMERS 有权

    公开(公告)号：US20230002651A1

    公开(公告)日：2023-01-05

    申请号：US17782181

    申请日：2020-12-04

    Applicant: Bostik, Inc.

    Inventor： Kathleen M. Davis ,  Michael D. Vitrano ,  Patrick J. Czaplewski ,  Lauren M. Rohde

    IPC: C09J153/00 ,  C09J5/06 ,  C08F220/06 ,  C08F210/02

    Abstract: A hot melt pressure sensitive adhesive composition comprises: (a) a block copolymer comprising a first polymer block comprising an ethylene residue and a second polymer block comprising a C1 to C4 alkyl acrylate residue, wherein the block copolymer has a melt index as measured in accordance with ASTM D1238 of between about 0.1 and about 250 g/10 min; (b) a tackifying resin; and (c) a plasticizer. A method for making a laminate comprises the steps of: applying the hot melt pressure sensitive adhesive composition of the invention in a molten state to a primary substrate and allowing the adhesive to cool to form a bond with said primary substrate. Certain adhesives the invention perform comparably to certain styrene block copolymer adhesives, but provides an alternative polymer source.

    Hot melt adhesive compositions based on propylene-based polymers and methods for using same
    16.
    发明授权
    Hot melt adhesive compositions based on propylene-based polymers and methods for using same 有权

    公开(公告)号：US11365329B2

    公开(公告)日：2022-06-21

    申请号：US16157190

    申请日：2018-10-11

    Applicant: Bostik, Inc.

    Inventor： Baoyu Wang ,  Ronald F. Graf ,  Russell Stuczynski

    IPC: C09J7/35 ,  C09J11/08 ,  C09J123/14 ,  C08L23/14 ,  B32B7/12 ,  B32B27/12 ,  B32B27/32 ,  B32B5/26 ,  B32B3/04 ,  C09J7/24 ,  C09J7/21 ,  B32B5/02 ,  B32B37/12

    Abstract: A polymer composition for use in a hot melt adhesive comprises at least one semierystalline, low molecular weight (LMW) propylene-based polymer; at least one essentially amorphous, high molecular weight (HMW) propylene-based polymer; and at least one essentially amorphous, LMW propylene-based polymer. A hot melt adhesive composition further contains a tackifier, a plasticizer, an antioxidant, and optionally a wax, a filler, a colorant, a UV absorber, another polymer, or combinations thereof. The hot melt adhesive is useful for a variety of industrial applications where bonding of low surface energy substrates is encountered, including disposable nonwoven hygienic articles, labeling and other assembly applications. Particularly preferred applications include nonwoven disposable diaper and feminine sanitary napkin construction, diaper and adult incontinent brief elastic attachment, diaper and napkin core stabilization, diaper backsheet lamination, industrial filter material conversion, and surgical gown and surgical drape assemblies. The composition demonstrates improved peel strength while maintaining very good creep resistance.

    EXTRUDABLE ANTIFOG COPOLYESTER HEAT SEAL RESINS
    17.
    发明申请
    EXTRUDABLE ANTIFOG COPOLYESTER HEAT SEAL RESINS 有权

    公开(公告)号：US20220153004A1

    公开(公告)日：2022-05-19

    申请号：US17665720

    申请日：2022-02-07

    Applicant: Bostik, Inc.

    Inventor： Deepa PUTHANPARAMBIL

    IPC: B32B27/20 ,  B29C48/08 ,  B29C48/40 ,  B32B27/36

    Abstract: A semicrystalline copolyester resin composition formed by twin screw extrusion of various ingredients includes copolyester resins, antiblock, slip and antifog additives. This semicrystalline copolyester resin can be extruded on to PET film or coextruded with PET resin to form clear PET films with antifog properties. These films with antifog properties are produced in a single step without the use of solvent and does not involve any secondary step for coating a separate antifog layer. This minimizes the cost and time required by a converter to make such clear antifog films. These films containing the heat seal copolyester resin can be heat sealed to clear APET trays. Contents within the trays, such as food, can be seen without fogging on the inside of the film that is used to seal the tray. The seals are strong and the peels are smooth giving a very good packaging performance.

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