A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCESS FOR PREPARING WATER-REDISPERSIBLE POLYMER POWDERS FOR DRY FORMULATIONS OF CONSTRUCTION MATERIALS
Vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers along with processes for preparing the same and uses for the same. Wherein the vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers are in the form of water-redispersible powders for producing hydraulically-setting building material dry formulations. Where the storage stability of the protective-colloid-stabilized vinyl acetate-ethylene or styrene-(meth)acrylic ester copolymers in the form of water-redispersible powders is improved by drying aqueous dispersions comprising protective-colloid-stabilized vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers, one or more water-soluble inorganic salts, and one or more desiccants. Where the water-soluble inorganic salts are selected from the group consisting of alkali metal sulfates and where the desiccants are selected from the group comprising polyvinyl alcohols, polyvinyl acetals, nonionic polyvinylpyrrolidones, nonionic poly(meth)acrylamides, polysaccharides and proteins.
PROCESS FOR PREPARING WATER-REDISPERSIBLE POLYMER POWDERS FOR DRY FORMULATIONS OF CONSTRUCTION MATERIALS
Vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers along with processes for preparing the same and uses for the same. Wherein the vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers are in the form of water-redispersible powders for producing hydraulically-setting building material dry formulations. Where the storage stability of the protective-colloid-stabilized vinyl acetate-ethylene or styrene-(meth)acrylic ester copolymers in the form of water-redispersible powders is improved by drying aqueous dispersions comprising protective-colloid-stabilized vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers, one or more water-soluble inorganic salts, and one or more desiccants. Where the water-soluble inorganic salts are selected from the group consisting of alkali metal sulfates and where the desiccants are selected from the group comprising polyvinyl alcohols, polyvinyl acetals, nonionic polyvinylpyrrolidones, nonionic poly(meth)acrylamides, polysaccharides and proteins.
PROCESS FOR PREPARING WATER-REDISPERSIBLE POLYMER POWDERS FOR DRY FORMULATIONS OF CONSTRUCTION MATERIALS
BANNWARTH MARKUS (author)
2023-06-15
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
PROCESS FOR PREPARING WATER-REDISPERSIBLE POLYMER POWDERS
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