公开(公告)号：US20220025189A1

公开(公告)日：2022-01-27

申请号：US17492989

申请日：2021-10-04

Applicant: OMYA INTERNATIONAL AG

Inventor： Daniel E. GERARD ,  Samuel RENTSCH ,  Matthias WELKER ,  Simon URWYLER ,  Joachim GLAUBITZ ,  Martina Elisabeth KNUPFER ,  Patrick A. C. GANE

IPC: C09C1/02 ,  D21H17/67 ,  D21H19/38 ,  D21H21/52

Abstract: A method of preserving, controlling an odor, and/or enhancing and/or mediating antimicrobial activity of a substrate is described, the method comprising administering a surface-reacted calcium carbonate. The surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one H3O+ ion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate.

公开(公告)号：US20220017753A1

公开(公告)日：2022-01-20

申请号：US17492216

申请日：2021-10-01

Applicant: OMYA INTERNATIONAL AG

Inventor： Daniel E. GERARD ,  Samuel RENTSCH ,  Matthias WELKER ,  Simon URWYLER ,  Joachim GLAUBITZ ,  Martina Elisabeth KNUPFER ,  Patrick A. C. GANE

IPC: C09C1/02 ,  D21H17/67 ,  D21H19/38 ,  D21H21/52

Abstract: A surface-reacted calcium carbonate is described. In embodiments, the surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one H3O+ ion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate.

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.