公开(公告)号：US20210221080A1

公开(公告)日：2021-07-22

申请号：US17059843

申请日：2019-05-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Benjamin R. Coonce ,  Richard J. Pokorny ,  Thomas P. Klun ,  Chunjie Zhang ,  Gregg A. Ambur ,  Benjamin G. Sonnek ,  Daniel J. Richter ,  Jung-Sheng Wu

IPC: B29D11/00 ,  B29C51/26 ,  G02B1/14 ,  G02B1/08

Abstract: A method of making a shaped abrasion-resistant multilayer optical film includes providing a curable composition comprising, based on the total weight of components a) to d) components: a) 87 to 96 weight percent of urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 4.8; b) 2 to 12.5 weight percent of (meth)acrylate monomer having a (meth)acrylate functionality of 1 to 2, wherein the (meth)acrylate monomer does not comprise a urethane (meth)acrylate compound; optionally c) 0.5 to 2 weight percent of silicone (meth)acrylate; and d) optional effective amount of photoinitiator. The curable composition is coated onto an MOF. Optionally, the curable composition to is at least partially dried. Next, the curable composition or the at least partially dried curable composition is at least partially cured to provide an abrasion-resistant multilayer optical film. Lastly, the abrasion-resistant multilayer optical film is thermoformed using a female mold having a mold surface. At least a portion of the mold surface has a radius of curvature of 58 to 76 mm and a maximum depth of 13 to 20 mm.

公开(公告)号：US20210208320A1

公开(公告)日：2021-07-08

申请号：US16755843

申请日：2018-10-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gregg A. Ambur ,  Benjamin G. Sonnek ,  Jo A. Etter ,  Timothy L. Wong ,  Thomas P. Klun ,  Richard J. Pokomy ,  Benjamin R. Coonce ,  Douglas S. Dunn ,  Henry A. Kostalik ,  Christopher S. Degraw ,  John R. Jacobson ,  Chunjie Zhang

IPC: G02B5/30 ,  B29D11/00 ,  G02B5/28

Abstract: An optical assembly including an optical element insert molded directly onto an optical stack is provided. The optical stack includes an optical film and may include a liner with the optical film being disposed between the optical element and the liner. The liner, if included, is removable from the optical film without substantial damage to the optical film. An outermost layer of the optical film may be diffusion bonded to a major surface of the optical element.

公开(公告)号：US20190143277A1

公开(公告)日：2019-05-16

申请号：US16097854

申请日：2017-05-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Chunjie Zhang ,  Hongying Jiang ,  Xuan Jiang ,  Naiyong Jing

IPC: B01D69/12 ,  B01D67/00 ,  B01D71/02 ,  B01J20/10 ,  B01J20/28 ,  B01J20/32

CPC classification number: B01D69/12 ,  B01D67/0079 ,  B01D71/027 ,  B01D71/56 ,  B01D71/68 ,  B01J20/103 ,  B01J20/28007 ,  B01J20/2803 ,  B01J20/28035 ,  B01J20/3234 ,  B01J20/3268 ,  B01J20/3295

Abstract: The present disclosure provides a multilayer article. The multilayer article includes a) a microfiltration membrane substrate; b) a first layer directly attached to the first major surface of the microfiltration membrane substrate; and c) a second layer directly attached to the first layer. The first layer includes a first polymeric binder and acid-sintered interconnected first silica nanoparticles arranged to form a continuous three-dimensional porous network. The second layer includes acid-sintered interconnected second silica nanoparticles arranged to form a continuous three-dimensional porous network. The present disclosure also provides a method for forming a multilayer article. The method includes (a) saturating a microfiltration membrane substrate with a liquid; (b) applying a first aqueous coating formulation to at least a portion of a first major surface of the microfiltration membrane substrate to form a coated substrate; (c) sintering the coated substrate, thereby forming a first layer; (d) applying a second aqueous coating formulation to the first major surface of the first layer to form a twice-coated substrate; and (e) sintering the twice-coated substrate.