Invention Grant
- Patent Title: Use of co-grinding agents in a process to manufacture co-ground natural and precipitated calcium carbonates, suspensions and dry pigments obtained and their uses
- Patent Title (中): 在研磨天然和沉淀碳酸钙，悬浮液和干颜料的方法中使用共研磨剂及其用途
-
Application No.: US12085318Application Date: 2006-12-19
-
Publication No.: US08282730B2Publication Date: 2012-10-09
- Inventor: Christian Jacquemet , Jacques Mongoin
- Applicant: Christian Jacquemet , Jacques Mongoin
- Applicant Address: FR Genay
- Assignee: Coatex S.A.S.
- Current Assignee: Coatex S.A.S.
- Current Assignee Address: FR Genay
- Agency: Amster, Rothstein & Ebenstein LLP
- Priority: FR0513504 20051230
- International Application: PCT/IB2006/003806 WO 20061219
- International Announcement: WO2007/077484 WO 20070712
- Main IPC: C09C1/02
- IPC: C09C1/02 ; C09C3/04 ; B02C23/06
Abstract:
The invention consists in the use, in a process of manufacture of GCC and PCC co-ground in water, of a co-grinding agent characterised in that: a) it is constituted by a least one homopolymer and/or at least one copolymer of acrylic acid, which is partially neutralised, of which the rate of molar neutralisation is less than 75% of the total acid functions, b) and in that it is introduced: during the stage of preparation of the aqueous suspensions of GCC and PCC, and/or during stage 2) of co-grinding, and possibly during the stage of co-grinding and another stage of concentration, and possibly during this other stage of concentration. The invention also lies in the resulting aqueous suspensions of GCC and PCC, in the dry pigments of GCC and PCC obtained, and in the use of these products in paper, paint, rubber and plastic.
Public/Granted literature
Information query
