Invention Grant
- Patent Title: Use of phosphoric acid to reduce the quantity of free dispersing agent in a method for concentrating calcium carbonate in water
- Patent Title (中): 在将碳酸钙浓缩在水中的方法中使用磷酸来减少游离分散剂的量
-
Application No.: US12740964Application Date: 2008-07-28
-
Publication No.: US08163829B2Publication Date: 2012-04-24
- 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: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0706806 20070928
- International Application: PCT/IB2008/002040 WO 20080728
- International Announcement: WO2009/040616 WO 20090402
- Main IPC: C08K3/26
- IPC: C08K3/26
Abstract:
The invention consists of the use of phosphoric acid, in a method for concentrating an aqueous dispersion or suspension of calcium carbonate in the presence of at least one acrylic dispersing agent, as an agent for reducing the quantity of free dispersing agent, i.e. the fraction of acrylic dispersing agent not adsorbed onto the surface of the particles of the calcium carbonate and present in the aqueous phase. It also pertains to the aqueous dispersions or suspensions of calcium carbonate, exhibiting a reduced quantity of free dispersing agent.
Public/Granted literature
Information query
