Rohm Gmbh

Roehm Gmbh Chemische Fabrik

Rohm Gmbh Chemische Fabrik

Roehm Gmbh & Co Kg

Wilhelm Elser

Dieter Tessmer

Michael Wicke

Karl Foelsch

Hubert Scheuermann

Klaus Huebner

Theodor Mager

Peter Rossberg

Wolfgang Klesse

Klaus Langerbeins

Hans Ottofrickenstein

Ursula Rausch

Werner Siol

Juergen Christner

Manfred Munzer

Hanns Boessler

Karl J Folsch

Marliese Weber

Hans-Juergen Geyer

Hans Boessler

Guenther Schmitt

Karl-Josef Folsch

Hertha Kraus

Peter Denkinger

Copolymerizates of methyl methacrylate and butyl methacrylate are used as plastisols in the automotive sector and as floor coverings. The invention describes a way to increase the storage stability of the plastisols by using small amounts of cross-linking agents.

Plastisols with cross-linking agents

Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters; &lsqb;lit., &ldquo;acrylic acid acrylic esters&rdquo;&rsqb;; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).

Method of producing aqueous dispersions as a base for hot sealing adhesives

Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).

A hot-sealable coated substrate comprising a primer layer from an aqueous poly(meth)acrylate dispersion, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters &lsqb;lit., &ldquo;acrylic acid acrylic esters&rdquo;&rsqb;; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).

Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters, &lsqb;lit., &ldquo;acrylic acid acrylic esters&rdquo;&rsqb;; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).

Aqueous dispersion of carboxylic acid functionalized poly(meth)acrylate

A bead polymerizate P which is prepared by suspension polymerization of monomer and then mechanically comminuted.

Plastisols

A powdery bonding agent for paints which is soluble in pure aliphatic compounds, and which is in the form of powdery polymerizate particles, which consists of, at least on the particle surface, of a copolymerizate formed of: (i) 60 to 95 percent by weight of units of at least one hardening monomer selected from the group consisting of (A) isobutylmethacrylate and (B) cycloalkylmethacrylate; and (ii) 5 to 40 percent by weight of units of at least one aliphatic-substance-solubilizing monomer selected from the group consisting of (C) alkylmethacrylates having 6 to 18 carbon atoms in the alkyl residue, where the units of isobutylmethacrylate account for no more than 60 percent by weight and the units of cycloalkylmethacrylates account for no less than 10 percent by weight, based on, in each case, the weight of the copolymerizate.

Pure-aliphatic compound-soluble powdery bonding agent for paints

An aqueous synthetic resin dispersion having a minimum film forming temperature below 50.degree. C., containing an emulsion polymer having a core/shell structure consisting of

Aqueous synthetic resin dispersion

Varnishing plastic surfaces with a clear or pigmented aqueous dispersion of a (meth)acrylate copolymer of (a) 20 to 90% by weight of acrylic and/or methacrylic acid alkyl or cycloalkyl esters with 1 to 10 carbon atoms in the ester group; (b) 80 to 10% by weight of acrylic and/or methacrylic acid esters with aromatic groups as the ester group or containing aromatic groups in the ester group; and (c) optionally, small quantities of other monomers, results in the formation of a firmly adhering, water and alcohol resistant finish. The copolymers are preferably emulsion polymers and are synthesized as multiple-phase polymers according to the core-shell model.

Aqueous polyacrylate systems for varnishing plastic surfaces

The inventive vehicle, or binder, for water based gloss paints contains, dispersed in a aqueous phase, particles of a multiphase emulsion polymer made up of

Binder for aqueous gloss paints

A method for priming an absorbent mineral or wood substrate to provide a wet-adhering coating, which comprises applying to said substrate a solution, in an organic solvent which has a normal boiling point between 50.degree. C. and 180.degree. C., of a copolymer of monomers of acrylate and methacrylate esters, of styrene and of vinyl esters, and of dialkylaminoalkyl esters of acrylic acid and of methacrylic acid and their corresponding amides, the maximum glass transition temperature of the copolymer being in the range from 20.degree. C. to 80.degree. C. and the reduced viscosity of the copolymer being in the range from 20 to 60 ml/g.

Method for priming absorbent substrates

A two-step emulsion polymerization method for making an aqueous emulsion of core/shell polymer particles recoverable as a polymer powder by spray drying the emulsion, said polymer being capable of swelling and forming a gel in gasoline, and paints and coating compositions containing gasoline and such a polymer powder as a thickening agent or binder.

Thickeners and binders forming gels in gasoline

A printing ink or varnish having a binder comprising isopropylmethacrylate and hydrophilic comonomers, particularly unsaturated carboxylic acids, their hydroxyalkyl esters, or a mixture thereof; preferably in combination with cellulose esters such as nitrocellulose, as an additional binder. The ink or varnish also contains dissolved or undissolved dyes, as well as a lower alkyl alcohol solvent. The printing and coatings thus produced are characterized by hardness and a high sealing stability.

Alcohol-soluble printing ink or varnish

Non-blocking coatings are disclosed, which coatings comprise an acrylate ester emulsion polymer prepared by polymerization in the presence of a degraded starch which, in a 10 percent solution in 1 N NaOH, has a viscosity not greater than 15 mPa . s at a velocity gradient D=532.1 s.sup.-1.

Method of making aqueous emulsions of acrylate copolymers in the

Aqueous film-forming dispersions of a synthetic resin, said resin containing from 0.5 to 5 percent by weight of a heterocyclic comonomer of the formula ##STR1## wherein A--B is --C.dbd.C-- or --CH--CH--; R.sup.1 is hydrogen or lower alkyl; and R is an aliphatic group having a polymerizable carbon-carbon double bond therein; water-base paints comprising a pigment and filler dispersed in such an aqueous dispersion; and a method for overpainting substrates of oil-base paints or alkyl resin paints with such a water-base paint.

Growing community of inventors

Griesheim, Germany

Wilhelm Elser