Bayer Aktiengesellschaft

Lothar Fleiter

Rolf Dhein

Harald Blum

Hans-Joachim Traenckner

Peter Hohlein

Ludwig Bottenbruch

Knud Reuter

Jurgen Meixner

Jurgen Schwindt

Manfred Schreckenberg

Wolfgang Wellner

Wolfgang Beer

Hans G Stahl

The present invention relates to polymers capable of oxidative crosslinking, characterized in that they contain 10 to 80% by weight of structural units corresponding to formula (I) and/or (Ia) ##STR1## wherein R.sub.1 is an aliphatic saturated hydrocarbon radical containing 2 to 6 carbon atoms, provided that at least 2 carbon atoms are arranged between the nitrogen atom and the oxygen atom, and

Polymers capable of oxidative crosslinking

A process is disclosed for preparing aqueous, oxidatively-drying alkyd resins. The resins are useful as binders in aqueous lacquers and coating compositions.

Process for the preparation of aqueous, oxidatively drying alkyd resins

Aqueous lacquers, which contain grafted polybutadiene/maleic acid semi-esters or semi-amides as bonding agent, can be siccativated while the siccative is firstly dispersed in the aqueous phase and the bonding agent is dispersed in this dispersion.

Process for the production of siccativated aqueous lacquers with

Penta- or hexahydric sugar alcohols are outstandingly suitable as a polyol component for the preparation of polyesters or alkyd resins. Secondary reactions resulting in darkening are substantially avoided if as small a quantity as possible of aromatic polycarboxylic acid components is used.

Process for the preparation of polyesters or alkyd resins, resins which

The invention relates to an aerially-crosslinking, pigmented or non-pigmented coating agent consisting of conventional lacquer auxiliaries and an aerially-crosslinking binder which has been reacted to form a dicarboxylic acid semi-ester by the reaction of a copolymer consisting of copolymerized units of at least one ester carrying at least one 1,2-epoxide group or hydroxyl group of an .alpha.,.beta.-monoolefinically unsaturated C.sub.3 -C.sub.5 -carboxylic acid and at least one vinyl or vinylidene monomer which is different therefrom with at least one drying fatty acid and optionally with at least one cyclic dicarboxylic acid anhydride, characterized in that the coating agent contains as an additional lacquer auxiliary from 0.2 to 2% by weight of at least one .alpha.-dicarbonyl compound, based on the aerially-crosslinking binder.

Aerially-crosslinking polyacrylate coating agents

A binder composition which has a number average molecular weight of from 1000 to 20,000 and which comprises, in copolymerized form, from 5 to 55% by weight of fumaric acid and/or maleic acid bis-glycidyl ester and from 95 to 45% by weight of one or more vinyl and/or vinylidene monomers, esterified to an acid number of from 3 to 30 mg KOH/g with from 18 to 72% by weight, based on copolymer plus fatty acid, of a fatty acid and subsequently reacted with 0 to 3% by weight, based on copolymer plus fatty acid plus dicarboxylic acid anhydride, of a dicarboxylic acid anhydride.

Air-drying, fatty acid-modified lacquer binders, based on fumaric or

An air-drying and oven-drying lacquer binder based on a copolymer having copolymerized units of

Air-drying and oven-drying acrylate lacquer binders

Air-drying lacquer binders comprising copolymers of copolymerised units of

Air-drying acrylate lacquer binders

An air-drying lacquer binder comprising a copolymer of copolymerized units of

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Krefeld, Germany

Lothar Fleiter