Basf Aktiengesellschaft

Erich Penzel

Maximilian Angel

Joachim Pakusch

Bernhard Schuler

Gregor Ley

Gernot Franzmann

Kaspar Bott

Guenter Eckert

Hans J Geelhaar

Franz Merger

Knut Oppenlaender

Eckehardt Wistuba

Martin Fischer

Oral Aydin

Friedrich Towae

Hermann Seyffer

Walter Rebafka

Eberhard Beckmann

Lothar Maempel

Norbert Sendhoff

Werner Kuesters

Rainer Strickler

Michael Melan

Josef Lamprecht

Karl-Clemens Peters

Walter Trautmann

Hans J Neumann

Lothar Heider

Lothar Wuertele

Werner Schackert

Alfred Mueller

Walter Prange

Wolfgang Rehder

Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.3 -alkyl and X is O or NH, and from 20 to 85% by weight of other monomers capable of undergoing free radical copolymerization are used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I. The resultant powders are added to mineral binders.

Composition of a redispersible spray dried unsaturated sulfonic acid

Packaging materials are produced by a process which comprises coating substrates suitable for packaging with an aqueous solution or emulsion which contains a copolymer A) composed of

Packaging materials having barrier properties against oxygen

Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is O or NH, and

Unsaturated sulfonic acid polymers as spray drying assistants

Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is O or NH, and from 20 to 85% by weight of other monomers capable of undergoing free radical copolymerization are used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I.

Use of unsaturated sulfonic acid polymers as spray drying assistants

Floor covering adhesives substantially comprising

Floor covering adhesive based on aqueous polymer dispersions

Paints and renders contain, as binders, aqueous dispersions of copolymers which have a minimum film-forming temperature of from -15.degree. to 20.degree. C. and consist of

Paints and renders containing aqueous dispersions of vinylidene

N-substituted acrylamide or methacrylamide derivatives of the general formula ##STR1## where m is 0 or 1, n is 1, 2, 3 or 4, n-m is 1, 2, 3 or 4, X is Br or Cl, and R.sup.1 and R.sup.2 are each CH.sub.3 or H, are prepared by reacting an aromatic haloalkyl compound with N-methylolacrylamide or N-methylolmethacrylamide in the presence of a strong acid.

N-substituted acrylamide and methacrylamide derivatives and their

Emulsion copolymerization of acrylic or methacrylic acid esters with from 0.3 to 10% by weight of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids and/or their amides, with or without up to 25% by weight of styrene, acrylonitrile, vinyl acetate and/or vinyl chloride, using the emulsion feed process, gives particularly concentrated copolymer dispersions if an emulsifier system of 0.01-5.0% by weight of a sulfuric acid half-ester of an oxyalkylated alkylphenol and 0.01-1% by weight of a dialkyl sulfosuccinate, where alkyl is of 6 to 18 carbon atoms, is employed and the polymerization is carried out at pH 2-6.

Preparation of concentrated polyacrylate dispersions

Binders which comprise (A) an aqueous emulsion of a copolymer A, having a glass transition temperature of 0-50.degree. C., of monoolefinically unsaturated carboxylic acid esters, with or without styrene, vinyl acetate, vinyl chloride and acrylonitrile, which copolymer contains, as copolymerized units, small amounts of monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids and/or their amides (of which the nitrogen atoms may or may not be alkyl-substituted and/or alkylol-substituted) and small amounts of monomers containing carbonyl groups, (B) from 0.05 to 1 mole, per mole of carbonyl groups present in the copolymer A, of a water-soluble aliphatic dihydrazine compound and (C) from 0 to 0.02 mole, per mole of dihydrazine compound, of a water-soluble zinc, manganese, cobalt and/or lead salt, or particularly suitable for use in paints and pebble dash renderings, since they give films which adhere particularly well to alkyd resin primers and which show particularly little tendency to whitening.

Binders for paints

Quaternary ammonium compounds of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is H, halogen, phenyl, alkyl, alkoxy or alkylthio,

Benzoin photoinitiator containing a quaternary ammonium group in photo

Films obtained from paints based on conventional aqueous polymer dispersions exhibit improved wet adhesion to alkyd resin-coated substrates and improved blocking resistance if the paints contain polyglycidylamines which carry 2 or more glycidyl groups which are bonded to hydrogen-free nitrogens.

Aqueous paints which contain polyglycidylamines as additives

Aqueous dispersions of carbonyl-containing copolymers, which dispersions contain from 0.02 to 1 mole, per mole of carbonyl group, of organic hydrazine derivatives possessing 2 or more hydrazine radicals, and from 0.0002 to 0.02 mole, per mole of the hydrazine derivatives, of heavy metal ions give coatings, impregnations and finishes which are particularly easy to cross-link.

Aqueous dispersions, containing hydrazine derivatives, of

Acryloxy- and methacryloxy-alkyl-propanals and a process for their manufacture by esterifying the corresponding .beta.-hydroxyalkylpropanals with acrylic acid and methacrylic acid, respectively, in the presence of an acid esterification catalyst and of an inert diluent.

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Ludwigshafen, Germany

Erich Penzel