Wacker-chemie Gmbh

Wacker Polymer Systems Gmbh & Co. Kg

Robert Singer

Herbert Eck

Kurt Stark

Peter Tschirner

Richard Goetze

Andreas Lumpp

Karl Maier

Guenter Braunsperger

Ekkehard Merz

Maximilian Kerbl

Organosilicone and vinyl ester copolymers free from phase separation are prepared by copolymerizing at least one vinyl ester monomer with organosilicones containing difunctional silicone monomers and optionally a minor amount of monofunctional silicone monomers, in a non-aqueous solvent mixture containing at least one solvent with a transfer coefficient greater than 20&#xb7;10relative to vinyl acetate.

Organofunctional silicone copolymers and the saponification products thereof

The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.

Process for preparing solid polyvinyl ester resins

An aqueous primer based on alkali-soluble acrylic resins and siliconates, especially suitable for strongly alkaline substrates, for example, asbestos cement articles, is provided. The primer is characterized by stability to storage and good compatibility with the substrate and with customary coating agents, and it brings about good water repellence, good stabilization of the substrate and a good binding between the substrate and the final coating.

Alkaline resistant primer and the use thereof

A laminating and coating adhesive based on an aqueous dispersion of

Laminating and coating adhesive, its manufacture and use

Strongly adhering aqueous plastic dispersions based on copolymers of olefinically unsaturated compounds, which are particularly suitable as binding agents for paints and lacquers and as adhesives, and which are distinguished by their good wet adhesion are described. This is achieved by the inclusion by polymerization of from 0.2% to 7% by weight, based on the total weight of the monomers, of vinyl and/or allyl diacetylacetate having the formula:

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Burghausen, Germany

Robert Singer