The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2021
Filed:
Nov. 14, 2016
Bando Chemical Industries, Ltd., Hyogo, JP;
Wacom Co., Ltd., Saitama, JP;
Yutaka Kamada, Hyogo, JP;
Arata Tani, Hyogo, JP;
Toshihiko Horie, Saitama, JP;
Soh Kato, Saitama, JP;
BANDO CHEMICAL INDUSTRIES, LTD., Hyogo, JP;
WACOM CO., LTD., Saitama, JP;
Abstract
The present invention addresses the problem of providing a surface protective film laminate, surface protective film and its producing method. The surface protective film which has excellent smoothness, light transmission properties, transparency, scratch resistance, weather resistance and self-healing properties. The present invention provides, as a solution, a surface protective film wherein three layers, namely, a protective layer, a transparent base film and a pressure-sensitive adhesive layer are laminated in this order, said protective layer being formed of a thermosetting polyurethane which is a cured product of a polyether polyol, an aliphatic isocyanate, an alcohol-based curing agent and a non-amine catalyst.