EP 1235758 A1 20020904 - MULTI-PHASE CALCIUM SILICATE HYDRATES, METHODS FOR THEIR PREPARATION, AND IMPROVED PAPER AND PIGMENT PRODUCTS PRODUCED THEREWITH
Title (en)
MULTI-PHASE CALCIUM SILICATE HYDRATES, METHODS FOR THEIR PREPARATION, AND IMPROVED PAPER AND PIGMENT PRODUCTS PRODUCED THEREWITH
Title (de)
MULTIPHASIGE CALSIUMSILIKATHYDRATE, VERFAHREN ZUR HERSTELLUNG DERSELBEN UND VERBESSERTE PAPIER- UND PIGMENT-PRODUKTE DIESE ENTHALTEND
Title (fr)
HYDRATES DE SILICATE DE CALCIUM A PHASES MULTIPLES, LEURS PROCEDES DE PREPARATION ET PRODUITS AMELIORES A BASE DE PAPIER ET DE PIGMENTS FABRIQUES A PARTIR DE CES HYDRATES
Publication
Application
Priority
- US 0023506 W 20000826
- US 15086299 P 19990826
Abstract (en)
[origin: WO0114274A1] A method for the hydrothermal preparation of calcium silicate hydrates. Multi-phase calcium silicate hydrates, having unique physical and chemical properties, are prepared by hydrothermal reaction of specified ratios of CaO and SiO2, normally starting from slurries of slaked lime and from fluxed calcined diatomaceous earth, each of which is at about the atmospheric boiling point before being mixed and charged to a reactor, and pressurized. The hydrothermal reaction is carried out while maintaining the initial dilution for a preselected reaction time at a preselected reaction temperature. The calcium silicate hydrates produced have high water absorption and light scattering power, and have optical and physical properties making them highly desirable as a filler substitute in papermaking.
IPC 1-7
IPC 8 full level
D21H 19/40 (2006.01); D21H 21/28 (2006.01); D21H 17/68 (2006.01); D21H 19/54 (2006.01)
CPC (source: EP)
D21H 19/40 (2013.01); D21H 21/28 (2013.01); D21H 21/285 (2013.01); D21H 17/68 (2013.01); D21H 19/54 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0114274 A1 20010301; AT E311353 T1 20051215; AU 6941100 A 20010319; CA 2382869 A1 20010301; CA 2382869 C 20130402; DE 60024483 D1 20060105; DE 60024483 T2 20060817; EP 1235758 A1 20020904; EP 1235758 A4 20021113; EP 1235758 B1 20051130
DOCDB simple family (application)
US 0023506 W 20000826; AT 00957850 T 20000826; AU 6941100 A 20000826; CA 2382869 A 20000826; DE 60024483 T 20000826; EP 00957850 A 20000826