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    PHOTOPOLYMERIZABLE COMPOSITIONS INCLUDING A POLYURETHANE METHACRYLATE POLYMER PREPARED USING A POLYCARBONATE DIOL, ARTICLES, AND METHODS
    36.
    发明申请
    PHOTOPOLYMERIZABLE COMPOSITIONS INCLUDING A POLYURETHANE METHACRYLATE POLYMER PREPARED USING A POLYCARBONATE DIOL, ARTICLES, AND METHODS 有权

    公开(公告)号：US20210301042A1

    公开(公告)日：2021-09-30

    申请号：US17344096

    申请日：2021-06-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Thomas P. Klun ,  Zeba Parkar ,  John M. Riedesel ,  Richard J. Pokorny ,  Chad M. Amb ,  Benjamin R. Coonce ,  Robert S. Clough ,  Tianyu Wu ,  Saswata Chakraborty ,  Yongshang Lu ,  Benjamin C. Mac Murray

    IPC: C08F2/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/129 ,  C08F2/44 ,  C08F220/18 ,  C08F290/06 ,  C08G18/44 ,  C08G18/67 ,  C08K5/00 ,  C08K5/3437

    Abstract: The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes a) 40-60 parts by weight of a monofunctional (meth)acrylate monomer, per 100 parts of the total photopolymerizable composition; b) a photoinitiator; and c) a polymerization reaction product of components. A cured homopolymer of the monofunctional (meth)acrylate monomer has a glass transition temperature of 125 degrees Celsius or greater. The polymerization reaction product of components includes i) a diisocyanate; ii) a hydroxy functional methacrylate; iii) a polycarbonate diol; and iv) a catalyst. The polymerization reaction product includes a polyurethane methacrylate polymer. Often, the polycarbonate diol has a number average molecular weight of greater than 1,000 grams per mole (g/mol) or a weighted average of all polycarbonate diols present in the components has a Mn of greater than 1,000 g/mol; alternatively, the polyurethane methacrylate polymer has a weight average molecular weight of 8,000 g/mol or greater. An article is also provided including the photopolymerizable composition reaction product. Further, the present disclosure provides articles and methods of making articles. Methods are additionally provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.

    ARTICLE AND METHODS OF MAKING THE SAME
    38.
    发明申请
    ARTICLE AND METHODS OF MAKING THE SAME 有权

    公开(公告)号：US20210149092A1

    公开(公告)日：2021-05-20

    申请号：US16622991

    申请日：2018-06-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Matthew H. Frey ,  Megan A. Creighton ,  Morgan A. Priolo ,  Benjamin R. Coonce

    IPC: G02B5/02 ,  B29D11/00 ,  B29C35/08

    Abstract: Article (9,19) comprising a substrate (10, 20) comprising a polymer and having first (11,21) and second (12, 22) opposed major surfaces. The first major surface (11, 21) has first surface regions (13, 23) with first nanoparticles (14a, 14b, 14c, 14d, 24a, 24b, 24c, 24d) partially embedded into the first major surface (11, 21), and one of •(a) second surface regions (15) free of nanoparticles; or •(b) second surface regions (25) with at least second nanoparticles (28) on the first major surface (11, 21) or partially embedded into the first major surface (11, 21). The first surface regions (13, 23) have a first average surface roughness, Ra1, of at least 20 nm, wherein the second surface regions (15, 25) have a second average surface roughness, Ra2, of less than 100 nm, wherein the first average surface roughness, Ra1, is greater than the second average surface roughness, Ra2, and wherein there is an absolute difference between the first and second average surface roughness of at least 10 nm.

    COMPOSITE FILM, PROTECTIVE COVER FOR AN ELECTRONIC DEVICE, AND METHODS OF MAKING THE SAME
    40.
    发明申请
    COMPOSITE FILM, PROTECTIVE COVER FOR AN ELECTRONIC DEVICE, AND METHODS OF MAKING THE SAME 审中-公开

    公开(公告)号：US20200324527A1

    公开(公告)日：2020-10-15

    申请号：US16769318

    申请日：2018-12-07

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Thomas P. Klun ,  Chunjie Zhang ,  Richard J. Pokorny ,  Benjamin R. Coonce ,  Benjamin G. Sonnek ,  Gregg A. Ambur ,  Jung-Sheng Wu

    IPC: B32B27/08 ,  C09J7/38 ,  C08K3/08 ,  B32B7/06 ,  B32B7/12 ,  C08G18/78 ,  B32B3/02 ,  B32B3/26 ,  C08F290/14 ,  C08G18/67 ,  C09D175/16

    Abstract: A composite film comprises: a first unitary thermoplastic polymer film; a low surface energy abrasion resistant layer disposed on the first unitary thermoplastic polymer film; a first adhesive layer proximate and securely bonded to the first unitary thermoplastic polymer film; a second unitary thermoplastic polymer film bonded to the first adhesive layer; and a second adhesive layer bonded to the second unitary thermoplastic polymer film opposite the first adhesive layer. A protective cover for an electronic device comprises: a first unitary thermoplastic polymer film; a low surface energy abrasion resistant layer disposed on the first unitary thermoplastic polymer film; a first adhesive layer proximate and securely bonded to the first unitary thermoplastic polymer film. The low surface energy abrasion resistant layer comprises an at least partially cured curable composition comprising components, based on the total weight of components a) to d): a) 70 to 95 weight percent of urethane (meth)acrylate compound having an average (meth)acrylate functionality of 3 to 9; b) 2 to 20 weight percent (meth)acrylate monomer having a (meth)acrylate functionality of 1 to 2, wherein the (meth)acrylate monomer is not a urethane (meth)acrylate compound; c) 0.5 to 2 weight percent of silicone (meth)acrylate; and d) optional effective amount of photoinitiator. Methods of making are also disclosed.

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