(19)
(11) EP 0 960 068 A1

(12)

(43) Date of publication:
01.12.1999 Bulletin 1999/48

(21) Application number: 97945995.0

(22) Date of filing: 01.12.1997
(51) International Patent Classification (IPC): 
C01B 33/ 193( . )
(86) International application number:
PCT/GB1997/003305
(87) International publication number:
WO 1998/025851 (18.06.1998 Gazette 1998/24)
(84) Designated Contracting States:
BE DE ES FR GB IT

(30) Priority: 10.12.1996 GB 19960025630

(71) Applicant: CROSFIELD LIMITED
Warrington, Cheshire WA5 1AB (GB)

(72) Inventor:
  • WARD, David, Richard
    Holywell Flintshire CH8 7QA (GB)

(74) Representative: Collingwood, Anthony Robert, et al 
Imperial Chemical Industries PLC, Group Intellectual Property Dept., P.O. Box 11, The Heath
Runcorn WA7 4QE, Cheshire
Runcorn WA7 4QE, Cheshire (GB)

   


(54) CONTROLLED-PORE AMORPHOUS SILICAS AND PROCESS FOR MANUFACTURING THE SAME