公开(公告)号：US20210114361A1

公开(公告)日：2021-04-22

申请号：US17058049

申请日：2019-08-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Charlie Chia-Tie HO ,  Yongshang LU ,  John J. JAROS ,  Jay M. JENNEN ,  Ryan M. BRAUN ,  Sean P. ADDISON ,  Trevor A. LARSON ,  Richard J. POKORNY ,  Joan M. NOYOLA ,  Zachary J. MALMBERG ,  Thomas P. KLUN ,  Moses M. DAVID ,  Jun MA ,  Cordell M. HARDY

IPC: B32B27/40 ,  B32B27/08 ,  B32B7/12 ,  B32B27/14 ,  B32B37/15 ,  C08G18/12 ,  C08G18/32 ,  C08G18/42 ,  C08G18/66 ,  C08G18/75 ,  C08G18/76

Abstract: Various embodiments disclosed relate to a surfacing film. The surfacing film includes a base layer. The base layer includes a thermoplastic polyurethane film comprising a reaction product of a reaction mixture of a diisocyanate, a polyester polyol having a melting temperature of at least about 30° C.; and a diol chain extender. There are many reasons to use the surfacing film including easier and more cost effective manufacturing of the surfacing film by directly extruding the base layer by mixing the reaction mixture in an extruder. Another reason to use the surfacing film is that the film has improved resistance to discoloration. Another reason to use the film is that the film shows good toughness.

公开(公告)号：US20200071562A1

公开(公告)日：2020-03-05

申请号：US16346722

申请日：2017-11-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Richard J. POKORNY ,  Nicholas L. UNTIEDT ,  Thomas P. KLUN

IPC: C09D175/16 ,  C09D7/62 ,  C08F220/14 ,  C08G18/67 ,  C08G18/79 ,  C08G18/24

Abstract: A hardcoat composition is described comprising urethane (meth)acrylate oligomer having a first functional groups; an acrylic polymer having second functional groups; wherein the first and second functional groups form a hydrogen bond; and silica nanoparticles. The hardcoat composition may be cured by actinic radiation, upon which the acrylic polymer may be removed by solvent extraction. Also described are articles comprising the cured hardcoat described herein disposed on a surface of a substrate and methods of making an article.