Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1995-04-21
1996-01-16
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 21, 528 32, 528 30, 528 38, 528 41, 528481, C08G 7708
Patent
active
054848695
ABSTRACT:
Organosiloxane copolycondensates are disclosed and which are optionally cross-linked by means of cross-linking agents containing Si, Ti, Zr and/or Al and contain the units ##STR1## wherein R.sup.1 -R.sup.5 are ##STR2## wherein R.sup.6 is alkylene with C.sub.1 -C.sub.10 bound directly to N or X, cycloalkylene with C.sub.5 -C.sub.8 or ##STR3## X is >N--H, >N--CH.sub.3, >N--C.sub.2 H.sub.5, --S--, --S.sub.2 --, --S.sub.3 --, --S.sub.4 --, ##STR4## wherein R" is H or alkyl with C.sub.1 -C.sub.5. These products are in the form of spherical particles with a diameter of 0.01 to 3.0 mm, a specific surface of up to 1000 m.sup.2 /g, a specific pore volume of up to 6.0 ml/g and a bulk density of 50 to 1000 g/l. Different methods of preparing the formed copolycondensates are disclosed as well as use of certain compositions for removing metals from solutions and/or for the adsorption of gaseous organic compounds and/or of water vapor.
REFERENCES:
patent: 5003024 (1991-03-01), Panster et al.
Panster Peter
Wieland Stefan
Degussa - Aktiengesellschaft
Marquis Melvyn I.
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