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:
Sep. 28, 2021
Filed:
Jul. 26, 2018
Nissan Chemical Corporation, Tokyo, JP;
Kazuya Shindo, Funabashi, JP;
Tokio Nishita, Toyama, JP;
Kazuya Ebara, Funabashi, JP;
BangChing Ho, Kaohsiung, TW;
NISSAN CHEMICAL CORPORATION, Tokyo, JP;
Abstract
Provided is a composition for forming release layers which comprises (A) a polyurea including a repeating unit represented by formula (1), (B) an acid compound or a salt thereof, (C) a crosslinking agent selected from among compounds having a nitrogen atom substituted by a hydroxyalkyl group and/or an alkoxymethyl group, (D) a polymeric additive including a repeating unit represented by formula (a1), a repeating unit represented by formula (b), and a repeating unit represented by formula (c), and (E) a solvent, wherein the polymeric additive (D) is contained in an amount of 5-100 parts by mass per 100 parts by mass of the polyurea (A). (In the formulae, the Rmoieties each are independently a hydrogen atom or a methyl group; Ris a branched Calkyl group in which at least one hydrogen atom has been replaced with a fluorine atom; Ris a Chydroxyalkyl group; and Ris a Cpolycycloalkyl group or Caryl group.)