EP 0946277 A2 19991006 - METHOD FOR PRODUCING ORGANICALLY MODIFIED, PERMANENTLY HYDROPHOBIC AEROGELS
Title (en)
METHOD FOR PRODUCING ORGANICALLY MODIFIED, PERMANENTLY HYDROPHOBIC AEROGELS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ORGANISCH MODIFIZIERTEN, DAUERHAFT HYDROPHOBEN AEROGELEN
Title (fr)
PROCEDE POUR LA FABRICATION D'AEROGELS DURABLEMENT HYDROPHOBES MODIFIES ORGANIQUEMENT
Publication
Application
Priority
- DE 19648797 A 19961126
- EP 9706596 W 19971126
Abstract (en)
[origin: DE19648797A1] The invention relates to a method for producing organically modified aerogels with permanently hydrophobic surface groups, wherein a) a lyogel is provided; b) the lyogel provided in step (a) is wahed with an organic solvant; c) the surface of the gel obtained in step (b) is silylated; and d) the silylated surface gel obtained in step (c) is dried. The invention is characterized in that a disiloxane of the formula (I) R3Si-O-SiR3 is used as silylating agent in step (c), wherein the radicals R mean individually, being the same or different, either a hydrogen atom or a non-reactive organic linear, branched, cyclic, saturated or unsaturated, aromatic or heteroaromatic radical.
IPC 1-7
IPC 8 full level
B01J 13/00 (2006.01); B01J 20/10 (2006.01); B01J 20/281 (2006.01); C01B 33/16 (2006.01); C01B 33/18 (2006.01)
CPC (source: EP KR)
B01J 13/00 (2013.01 - KR); B01J 13/0091 (2013.01 - EP); C01B 33/16 (2013.01 - EP)
Citation (search report)
See references of WO 9823367A2
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
DE 19648797 A1 19980528; CA 2274911 A1 19980604; CN 1101725 C 20030219; CN 1241953 A 20000119; EP 0946277 A2 19991006; JP 2001504757 A 20010410; KR 20000057273 A 20000915; WO 9823367 A2 19980604; WO 9823367 A3 19980716
DOCDB simple family (application)
DE 19648797 A 19961126; CA 2274911 A 19971126; CN 97181109 A 19971126; EP 9706596 W 19971126; EP 97952807 A 19971126; JP 52427998 A 19971126; KR 19997004666 A 19990526