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    RETROREFLECTIVE ARTICLES AND DEVICES HAVING VISCOELASTIC LIGHTGUIDE
    4.
    发明申请
    RETROREFLECTIVE ARTICLES AND DEVICES HAVING VISCOELASTIC LIGHTGUIDE 审中-公开
    回归物品和具有粘弹性光泽的装置

    公开(公告)号：US20150316693A1

    公开(公告)日：2015-11-05

    申请号：US14741503

    申请日：2015-06-17

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Audrey A. Sherman ,  Marie A. Boulos ,  Michael A. Meis ,  Kevin R. Schaffer ,  Thu-Van T. Tran

    IPC分类号： G02B5/128 ,  G09F13/16 ,  F21V8/00

    CPC分类号： G02B5/128 ,  G02B6/0055 ,  G09F13/16 ,  G09F2013/0472

    摘要： 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 optical device may have a “front lit” configuration such that light being transported within the lightguide is extracted and retroreflected by the film toward a viewer. The optical device may have a “back lit” configuration such that light being transported within the lightguide is extracted and transmitted through the film toward a viewer. The retroreflective film may comprise beaded retroreflective sheeting such as that used in traffic signs and markings.

    摘要翻译： 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。 光学装置可以具有“前照明”构造，使得在光导内传输的光被薄膜朝向观察者提取并回射。 光学装置可以具有“背光”构造，使得在光导内传输的光被提取并通过胶片朝向观察者传播。 回射膜可以包括诸如用于交通标志和标记的串珠式回射片材。

    Compositions based on acrylic block copolymer blends
    5.
    发明授权
    Compositions based on acrylic block copolymer blends 有权

    公开(公告)号：US10287427B2

    公开(公告)日：2019-05-14

    申请号：US15516419

    申请日：2015-12-01

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： David J. Yarusso ,  Thu-Van T. Tran

    IPC分类号： C08L29/14 ,  C08L53/00 ,  C08F293/00 ,  C08J3/00 ,  C08L1/14

    摘要： Described herein is a composition comprising a polymeric blend of: (i) a first polymer comprising at least one acrylic block copolymer, wherein the at least one acrylic block copolymer comprises: (a) at least two A block polymeric units wherein each A block has a glass transition temperature of at least 90 C and each A block is independently derived from a monoethylenically unsaturated monomer comprising a first (meth)acrylate monomer; and (b) at least one B block polymeric unit wherein the at least one B block has a glass transition temperature no greater than −30 C and wherein the at least one B block is derived from a monoethylenically unsaturated monomer comprising a second (meth)acrylate monomer; and (ii) a second polymer selected from at least one of a polyvinyl acetal resin, a polyvinyl acetate, and a cellulose ester.

    Retroreflective articles and devices having viscoelastic lightguide
    6.
    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

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Audrey A. Sherman ,  Marie A. Boulos ,  Kevin R. Schaffer ,  Michael A. Meis ,  Thu-Van T. Tran ,  Ellen O. Aeling ,  Soemantri Widagdo

    IPC分类号： F21V7/04 ,  F21V8/00 ,  F21V13/04 ,  B44F1/04 ,  G02B5/124 ,  G09F13/18 ,  B42D25/29 ,  B42D25/324 ,  B42D25/328

    CPC分类号： F21V13/04 ,  B42D25/29 ,  B42D25/324 ,  B42D25/328 ,  B42D2035/20 ,  B44F1/045 ,  G02B5/12 ,  G02B5/124 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0063 ,  G09F13/18

    摘要： 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.

    摘要翻译： 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。

    METHOD OF MAKING PACKAGE VISCOELASTIC COMPOSITIONS BY POLYMERIZING ETHYLENICALLY-UNSATURATED MATERIALS USING IONIZING RADIATION
    7.
    发明申请
    METHOD OF MAKING PACKAGE VISCOELASTIC COMPOSITIONS BY POLYMERIZING ETHYLENICALLY-UNSATURATED MATERIALS USING IONIZING RADIATION 有权
    通过使用离子化辐射聚合乙烯基不饱和材料制备包装粘弹性组合物的方法

    公开(公告)号：US20150322304A1

    公开(公告)日：2015-11-12

    申请号：US14648003

    申请日：2013-12-06

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Daniel J. O'Neal ,  Sasha B. Myers ,  Karl Richter ,  Thu-Van T. Tran ,  Craig E. Hamer

    IPC分类号： C09J133/08 ,  C08K5/00 ,  C08K3/00

    CPC分类号： C09J133/08 ,  C08K3/01 ,  C08K5/0008 ,  C09J7/385 ,  C09J133/02

    摘要： Methods of forming an adhesive composition including the steps of (a) combining a non-deaerated mixture comprising at least one free radically (co)polymerizable ethylenically-unsaturated material with a sealable packaging, wherein the packaging contains the non-deaerated mixture; (b) sealing the non-deaerated mixture in the packaging to form a sealed packaging; and (c) exposing the non-deaerated mixture in the sealed packaging to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the at least one free radically (co)polymerizable ethylenically-unsaturated material to form an adhesive composition in the sealed packaging. The (co)polymerization takes place essentially non-adiabatically. At least a portion of the packaging is meltable and mixable with the adhesive composition so as to provide a flowable coatable adhesive composition when the sealed packaging containing the adhesive composition is heated to a temperature sufficient to melt at least a portion of the packaging.

    摘要翻译： 形成粘合剂组合物的方法包括以下步骤：（a）将包含至少一种自由基（共）可聚合烯属不饱和材料的非脱气混合物与可密封包装组合，其中所述包装含有非脱气混合物; （b）密封包装中的非脱气混合物以形成密封包装; 和（c）将密封包装中的未脱气的混合物暴露于电离辐射源，时间足以引发至少一部分自由基（共）可聚合烯属不饱和材料的（共）聚合 以在密封包装中形成粘合剂组合物。 （共）聚合基本上是非绝热的。 包装的至少一部分可熔融并与粘合剂组合物混合，以便当将含有粘合剂组合物的密封包装加热至足以熔化至少一部分包装的温度时，提供可流动的可涂覆粘合剂组合物。

    Adhesive compositions and articles, and methods of making and using the same
    10.
    发明授权
    Adhesive compositions and articles, and methods of making and using the same 有权

    公开(公告)号：US10246616B2

    公开(公告)日：2019-04-02

    申请号：US15615425

    申请日：2017-06-06

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： David J. Yarusso ,  Thu-Van T. Tran ,  Soyoung Kim ,  Ross E. Behling ,  Karl E. Benson

    IPC分类号： C08L23/02 ,  C09J133/10 ,  C08L33/26 ,  C09J133/08 ,  C09J133/26 ,  B32B27/30 ,  C08L33/10 ,  C08F220/18 ,  C08F265/06 ,  C08F290/04 ,  C09J155/00 ,  C08L33/08

    摘要： An adhesive composition includes a first acrylic polymer preparable from first components and a second acrylic polymer. The first components comprising i) a branched first alkyl (meth)acrylate having from 4 to 22 carbon atoms, and ii) at least one of acrylic acid and methacrylic acid. The second acrylic polymer is preparable from second components comprising iii) at least one second alkyl (meth)acrylate having from 4 to 22 carbon atoms, iv) a (meth)acrylamide represented by the formula wherein R1 is H or methyl, and R2 and R3 each independently represents H or an alkyl group having from 1 to 8 carbon atoms, or taken together R2 and R3 may form a divalent alkylene group having from 4 to 6 carbon atoms, and v) at least one high Tg macromer having a terminal free-radically polymerizable unsaturated group, the high Tg macromer having a Tg of at least 45° C. Based on the combined total weight of the at least one first acrylic polymer and the at least one second acrylic polymer, the at least one second acrylic polymer is present at a level of from 5 to 40 percent by weight. Methods of making the adhesive composition are also disclosed.