RELEASE LAYERS AND ARTICLES CONTAINING THEM

    公开(公告)号:US20210332269A1

    公开(公告)日:2021-10-28

    申请号:US17309619

    申请日:2019-12-11

    Abstract: Release layers that can be included in various adhesive tape products and release liners for adhesive layers are provided. The release layer is a cured reaction product of a curable release composition that contains i) a siloxane polymer having at least two hydrolyzable groups and having a weight average molecular weight of at least 1000 Daltons, ii) a crosslinker, iii) a silane additive, iv) a photoacid generator, and v) an optional silicate resin. The crosslinker is a compound of formula Si(OR5)4 or is a compound having at least two silyl groups of formula —Si(R4)x(OR5)3-x where R4 is alkyl or aryl, R5 is alkyl, and the variable xis an integer equal to 0 or 1. The silane additive is a compound having two silyl groups of formula —Si(R6)2(OR7) or a single silyl group of formula —Si(R10) (OR9)2 where R6 is alkyl or aryl, R7 is alkyl, R9 is alkyl, and R10 is alkyl or aryl.

    ADHESIVE ARTICLE AND METHOD OF MAKING THE SAME

    公开(公告)号:US20190322905A1

    公开(公告)日:2019-10-24

    申请号:US16312539

    申请日:2017-06-21

    Abstract: A method of making an adhesive article includes providing a liner having first and second silicone release layer disposed on opposite sides thereof, applying the onium salt photoacid generator onto at least a portion of the first silicone release layer to provide a modified silicone release layer, disposing an adhesive layer onto the second silicone release layer, and and exposing at least the adhesive layer to electron beam radiation within a process chamber thereby providing a crosslinked adhesive layer, wherein the process chamber contains oxygen, wherein the modified silicone release layer is exposed to the oxygen during crosslinking of the adhesive layer. The first silicone release layer does not contain an onium salt photoacid generator. An adhesive article made by the method is also disclosed.

    Retroreflective articles and devices having viscoelastic lightguide
    7.
    发明授权
    Retroreflective articles and devices having viscoelastic lightguide 有权
    具有粘弹性光导的回射制品和装置

    公开(公告)号:US09551475B2

    公开(公告)日:2017-01-24

    申请号:US14177332

    申请日:2014-02-11

    Abstract: Disclosed herein is an optical device having a light source, a viscoelastic lightguide and a retroreflective film suitable for retroreflecting light. Light from the light source enters the viscoelastic lightguide and is transported within the lightguide by total internal reflection. The transported light is extracted from the lightguide and retroreflected at a structured surface of the retroreflective film. The optical device may have a “front lit” or a “back lit” configuration depending on the relative positioning of the lightguide and the retroreflective film. The retroreflective film may include prismatic retroreflective sheeting, holographic film or film structured with diffraction gratings. The optical device may be used, for example, as a sign or marking, a license plate assembly, a tail light assembly for vehicles, a security laminate for protection of documents against tampering, or an illumination device.

    Abstract translation: 本文公开了一种具有光源,粘弹性光导和适于回射光的回射膜的光学装置。 来自光源的光进入粘弹性光导,并通过全内反射在光导内传输。 被输送的光从光导中提取出来并在回射膜的结构化表面回射。 根据光导和逆反射膜的相对定位,光学装置可以具有“前灯”或“背光”配置。 回射膜可以包括棱镜式反光片,全息膜或由衍射光栅构成的膜。 光学装置可以例如用作标志或标记,车牌组件,用于车辆的尾灯组件,用于保护文件免受篡改的安全层压板或照明装置。

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