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    Photochromic articles
    5.
    发明授权
    Photochromic articles 有权

    公开(公告)号：US12099222B2

    公开(公告)日：2024-09-24

    申请号：US17260509

    申请日：2019-08-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kevin T. Huseby ,  Michael Benton Free ,  Victor Ho ,  Stephen A. Johnson ,  Christopher W. A. Krohe

    IPC: G02B5/23 ,  C08J5/18 ,  C09K9/02 ,  G02C7/10

    CPC classification number: G02B5/23 ,  C08J5/18 ,  C09K9/02 ,  G02C7/102 ,  C08J2367/02

    Abstract: Photochromic article having first and second opposed major surfaces comprising a first, transparent layer having first and second opposed major surfaces, the first layer comprising thermoplastic, a second, transparent layer having first and second opposed major surfaces, the second layer comprising photochromic dye and amorphous copolyester, wherein the first major surface of the second layer is adjacent to the second major surface of the first layer, and a third layer having first and second opposed major surfaces, wherein the first major surface of the third layer is adjacent to the second major surface of the second layer. Embodiments of photochromic article described herein are useful, for example in eyewear, window films, security films, decorative films, electronic devices (i.e., having a display with a photochromic article).

    Printable compositions including polymeric and polymerizable components, articles, and methods of making articles therefrom
    6.
    发明授权
    Printable compositions including polymeric and polymerizable components, articles, and methods of making articles therefrom 有权

    公开(公告)号：US11602412B2

    公开(公告)日：2023-03-14

    申请号：US16463560

    申请日：2017-12-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zeba Parkar ,  Alexander J. Huffman ,  Mahfuza B. Ali ,  Stephen A. Johnson ,  Victor Ho

    IPC: A61C7/08 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  B29C64/124 ,  B29C64/20 ,  B29C64/393 ,  C08F220/68 ,  C08L75/04 ,  A61K6/887 ,  A61K6/893 ,  B33Y70/10 ,  B29K101/12 ,  B29L31/00

    Abstract: The present disclosure provides a printable composition. The printable composition includes a polymer, a polymerizable component, a temporary solvent, a photoinitiator, and optionally an inhibitor. The present disclosure also provides an article including an integral blend of a thermoset polymer and a second polymer different from the thermoset polymer. Further, the present disclosure provides a method of making an article. The method includes (i) providing a printable composition; (ii) selectively curing the printable composition to form a gelled article; and (iii) removing at least a portion of the temporary solvent from the gelled article. The method may optionally include (iv) curing unpolymerized polymerizable component remaining before or after step (iii). Also, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of an article, the article including: an integral blend of 8 to 50 wt. %, inclusive, of a thermoset polymer and 30 to 90 wt. %, inclusive, of a second polymer different from the thermoset polymer, wherein the weight percent is based on the total weight of the article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is 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.

    RETARDER
    9.
    发明申请
    RETARDER 审中-公开

    公开(公告)号：US20200333521A1

    公开(公告)日：2020-10-22

    申请号：US16765400

    申请日：2018-11-19

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Stephen A. Johnson ,  Derek W. Patzman ,  Richard Y. Liu ,  Victor Ho ,  John F. Van Derlofske, III

    IPC: G02B5/30 ,  C08L67/02

    Abstract: A retarder including first and second outer layers and a birefringent layer disposed between and in direct contact with the first and second outer layers is described. The birefringent layer may include a first polyester having greater than 45 mole percent naphthalate units and greater than 45 mole percent ethylene units. Each of the first and second outer layers includes a second polyester which may include 40 to 50 mole percent naphthalate units, at least 25 mole percent ethylene units, and 10 to 25 mole percent of branched or cyclic C4-C10 alkyl units. The retarder has a retardance in a range of 1 micrometer to 100 micrometers.

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