公开(公告)号：US20210139734A1

公开(公告)日：2021-05-13

申请号：US17047342

申请日：2019-04-16

Applicant: OMYA INTERNATIONAL AG

Inventor： Matthias BURI ,  Samuel RENTSCH ,  Fabio IPPOLITO

IPC: C09D17/00 ,  C09D7/61 ,  C09D7/65 ,  C09D7/63 ,  C09C1/02 ,  C09C1/42 ,  D21H21/28 ,  D21H17/67 ,  D21H17/68 ,  D21H17/07 ,  D21H17/37 ,  D21H19/12

Abstract: The present invention relates to the technical domain of additives for aqueous high solids suspensions of mineral materials. The inventive additive comprises specific primary amines and is used for increasing the pH-value of the suspension and/or for increasing the wettability of the mineral materials.

公开(公告)号：US20180355183A1

公开(公告)日：2018-12-13

申请号：US15780831

申请日：2017-01-05

Applicant: Omya International AG

Inventor： Samuel RENTSCH ,  Matthias WELKER ,  Patrick A.C. GANE

IPC: C09C1/02 ,  C01F11/18

CPC classification number: C09C1/021 ,  C01F11/185 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12

Abstract: The present invention relates to a method for the treatment of a surface-reacted calcium carbonate, wherein the treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts, iron (II)-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof, a treated surface-reacted calcium carbonate as well as a use of the treated surface-reacted calcium carbonate as oxygen scavenger.