公开(公告)号：US20170357039A1

公开(公告)日：2017-12-14

申请号：US15537302

申请日：2015-12-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Saori Ueda ,  Toshitaka Nakajima ,  Yorinobu Takamatsu ,  Ken Egashira ,  Koji Saito

IPC: G02B5/20 ,  B60R13/10

CPC classification number: G02B5/208 ,  B60R13/10 ,  G02B1/04 ,  G02B5/124 ,  C08L75/04

Abstract: The disclosed retroreflective sheet contains a retroreflective layer and a polyurethane surface protecting layer, wherein the surface protecting layer contains at least a reaction product of a polyol with either a polyester backbone or a polycarbonate backbone and a trifunctional or higher aliphatic isocyanate, and the glass transition temperature Tg of the surface protecting layer is 50° C. or higher, and the tan δ of the loss tangent at 120° C. is 0.1 or less.

公开(公告)号：US10365418B2

公开(公告)日：2019-07-30

申请号：US15537302

申请日：2015-12-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Saori Ueda ,  Toshitaka Nakajima ,  Yorinobu Takamatsu ,  Ken Egashira ,  Koji Saito

IPC: G02B1/04 ,  G02B5/20 ,  B60R13/10 ,  C08L75/04 ,  G02B5/124

Abstract: The disclosed retroreflective sheet contains a retroreflective layer and a polyurethane surface protecting layer, wherein the surface protecting layer contains at least a reaction product of a polyol with either a polyester backbone or a polycarbonate backbone and a trifunctional or higher aliphatic isocyanate, and the glass transition temperature Tg of the surface protecting layer is 50° C. or higher, and the tan δ of the loss tangent at 120° C. is 0.1 or less.

公开(公告)号：US10406998B2

公开(公告)日：2019-09-10

申请号：US14409067

申请日：2013-06-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Akira Muramoto ,  Toshitaka Nakajima

IPC: G09F13/16 ,  B60R13/10

Abstract: A license plate sheet having superior weather resistance is provided. A license plate comprising the license plate sheet and having markings visible to a infrared-based ALPR system, is also provided. In some embodiments, the license plate sheet includes an infrared absorbing marking layer, wherein the infrared absorbing marking layer includes cesium tungsten oxide and a binder.

公开(公告)号：US20150191132A1

公开(公告)日：2015-07-09

申请号：US14409067

申请日：2013-06-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Akira Muramoto ,  Toshitaka Nakajima

IPC: B60R13/10 ,  G09F13/16

CPC classification number: B60R13/10 ,  G09F13/16

Abstract: A license plate sheet having superior weather resistance is provided. A license plate comprising the license plate sheet and having markings visible to a infrared-based ALPR system, is also provided. In some embodiments, the license plate sheet includes an infrared absorbing marking layer, wherein the infrared absorbing marking layer includes cesium tungsten oxide and a binder.

Abstract translation: 提供具有优异耐候性的牌照片。 还提供了一种牌照，其特征在于包括牌照板并且具有可以基于红外线的ALPR系统可见的标记。 在一些实施例中，车牌板包括红外线吸收标记层，其中红外吸收标记层包括氧化钨铯和粘合剂。