公开(公告)号：US20210095096A1

公开(公告)日：2021-04-01

申请号：US17122804

申请日：2020-12-15

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Toru OOKUBO ,  Daisuke MURATA

IPC: C08K5/3492 ,  C08J5/18 ,  C08J7/04 ,  C09D5/32 ,  C09D175/04

Abstract: A protective film that includes at least one of a transparent polyolefin resin layer and a surface protection layer, and that has excellent weather resistance and a low level of white turbidity, which is a factor that impairs design properties; and a sheet using the protective film. The protective film comprises at least a transparent polyolefin resin layer, wherein the transparent polyolefin resin layer contains a first hydroxyphenyltriazine-based ultraviolet absorber (UVA-A) having a structure represented by the general formula below. In the general formula, R1-R3 each independently represent a hydrogen atom, a methyl group, a phenyl group, or an alkoxy group, and at least two of R1-R3 are an alkoxy group having 8-18 carbon atoms, R4 and R5 each independently represent a hydroxyl group, a methyl group, or a hydrogen atom, and R6-R8 each independently represent a methyl group or a hydrogen atom.

公开(公告)号：US20210138774A1

公开(公告)日：2021-05-13

申请号：US17151930

申请日：2021-01-19

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Daisuke MURATA ,  Toru OOKUBO

IPC: B32B27/18 ,  B32B27/32 ,  B32B7/12 ,  C08K5/3432 ,  C08K5/3475 ,  C08K5/3492

Abstract: A protective film containing a transparent polyolefin resin layer with improved or even superior weather resistance, and a sheet using the protective film. A protective film according to the present embodiment includes at least a transparent polyolefin resin layer. The transparent polyolefin resin layer contains a hindered amine light stabilizer represented by general formula (I) below in a range of 0.05 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of a transparent olefin resin included in the transparent polyolefin resin layer. (In general formula (I), R is an alkyl group having 1-18 carbon atoms, or a cycloalkyl group having 5-8 carbon atoms.)