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    METHODS OF CONTROLLING HAZE IN ORTHODONTIC APPLIANCES INCLUDING SEMI-CRYSTALLINE POLYMERS
    1.
    发明公开
    METHODS OF CONTROLLING HAZE IN ORTHODONTIC APPLIANCES INCLUDING SEMI-CRYSTALLINE POLYMERS 审中-公开

    公开(公告)号：US20230363858A1

    公开(公告)日：2023-11-16

    申请号：US18029942

    申请日：2021-10-05

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Ta-Hua Yu ,  Pamela A. Percha ,  Karl J.L. Geisler ,  Bruce R. Broyles

    IPC: A61C7/08

    CPC classification number: A61C7/08

    Abstract: A dental appliance includes a polymeric shell with a plurality of cavities for receiving one or more teeth, including an interior region with a core layer of a first thermoplastic polymer A with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa, and first and second interior layers of a second thermoplastic polymer B with a glass transition temperature of less than about 0° C., a flexural modulus less than about 1 GPa, and an elongation a break of greater than 150%; and first and second exterior layers of a third thermoplastic polymer C with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa. The dental appliance demonstrates enhanced optical properties, with enhanced light transmission and low haze.

    ARTICLES INCLUDING NANOSTRUCTURED SURFACES AND INTERPENETRATING LAYERS, AND METHODS OF MAKING SAME
    5.
    发明申请
    ARTICLES INCLUDING NANOSTRUCTURED SURFACES AND INTERPENETRATING LAYERS, AND METHODS OF MAKING SAME 有权

    公开(公告)号：US20210292570A1

    公开(公告)日：2021-09-23

    申请号：US17260326

    申请日：2019-08-19

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Matthew H. Frey ,  Ta-Hua Yu ,  Moses M. David ,  Richard J. Pokorny ,  Jun Ma

    IPC: C09D4/00 ,  C08K3/36 ,  C09D1/00 ,  B82B3/00 ,  B22D23/04

    Abstract: The present disclosure provides an article including an organic layer having a nanostructured first surface including nanofeatures defining nanorecesses and an opposing second surface; and a ceramic layer disposed on the nanostructured first surface of the organic layer and filling at least a portion of the nanorecesses. The ceramic layer has a nanostructured first surface including nanofeatures and an opposing second surface, and the nanostructured first surface of the ceramic layer is interpenetrated with the nanostructured first surface of the organic layer. The present disclosure also provides a method of making the article. The method includes obtaining an organic layer having a nanostructured first surface including nanofeatures defining nanorecesses and an opposing second surface; and filling at least a portion of the nanorecesses of the nanostructured first surface of the organic layer with a ceramic material to form the article. In addition, the present disclosure provides articles including interpenetrating layers having different elastic storage moduli, such as non-metallic layers, and methods of making the articles. The articles can exhibit high abrasion resistance.

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