Invention Grant
- Patent Title: Process for the deinking of coated paper or paperboard
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Application No.: US15760500Application Date: 2016-10-10
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Publication No.: US10544544B2Publication Date: 2020-01-28
- Inventor: Patrick A. C. Gane , Samuel Rentsch , Matthias Welker , Catherine Jean Ridgway
- Applicant: Omya International AG
- Applicant Address: CH Oftringen
- Assignee: OMYA INTERNATIONAL AG
- Current Assignee: OMYA INTERNATIONAL AG
- Current Assignee Address: CH Oftringen
- Agency: Heslin Rothenberg Farley & Mesiti P.C.
- Priority: EP15189268 20151012
- International Application: PCT/EP2016/074129 WO 20161010
- International Announcement: WO2017/063971 WO 20170420
- Main IPC: D21C5/02
- IPC: D21C5/02 ; D21H19/40 ; D21H19/52 ; D21H19/54 ; D21H19/44
Abstract:
A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water.
Public/Granted literature
- US20180258586A1 PROCESS FOR THE DEINKING OF COATED PAPER OR PAPERBOARD Public/Granted day:2018-09-13
Information query
