Hydrophobing additives
AssigneeWacker Chemie AG
InventorAbdulmajid Hashemzadeh
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Abstract
The invention relates to hydrophobing additives on the basis of silica, one or more silicone resins and one or more functionalized alkylalkoxysilanes, the alkyl groups thereof carrying at least one amino, carboxylic acid, epoxy or hydroxy group.
Claims15
A polymer composition containing:
- one or more silane-containing copolymers;
- and
- one or more hydrophobicizing additives, wherein the hydrophobicizing additives are based on silica, one or more silicone resins and one or more functionalized alkylalkoxysilanes whose alkyl groups bear at least one amino, carboxyl, epoxy or hydroxy group,
- wherein the silane-containing copolymers are based on ethylenically unsaturated monomers and include monomer units of ethylenically unsaturated silanes.
The polymer composition claim 14, wherein the hydrophobicizing additive is based on from 10 to 90% by weight of silica, based on the dry weight of the hydrophobicizing additive.
A composition containing composite particles and based on silica, one or more silicone resins, one or more functionalized alkylalkoxysilanes whose alkyl groups bear at least one amino, carboxyl, epoxy or hydroxy group and one or more silane-containing copolymers which are based on ethylenically unsaturated monomers and contain monomer units of ethylenically unsaturated silanes,
- wherein one or more composite particles are obtained by condensation of silica and/or silicone resins with one or more silane-containing copolymers in an aqueous solvent, with one or more silane-containing copolymers being fixed onto silica and/or silicone resins as a result of the condensation, are present.
(canceled)
Dependencies are inferred from the claim text.