Patents Examined by Ken Horten
  • Process of preparing high-porosity silica xerogels using alkanolamines
    Patent number: 5270027
    Abstract: The invention relates to high-porosity silica xerogels and a process for their preparation consisting of subjecting silica alcogels to thermal treatment in the presence of organic compounds containing amino and hydroxyl groups.The xerogels are characterised by a total pore volume .gtoreq.2 cc/g and a mean pore diameter .gtoreq.100 .ANG..
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: December 14, 1993
    Assignee: Istututo Guido Donegani S.p.A.
    Inventors: Luigi Balducci, Franco Montino, Guido Cogliati