Roehm Gmbh Chemische Fabrik

Rohm Gmbh

Evonik Rohm Gmbh

Evonik Operations Gmbh

Evonik Roehm Gmbh

Roehm Gmbh & Co Kg

Michael Wicke

Wilhelm Elser

Dieter Tessmer

Juergen Hartmann

Karl Foelsch

Hubert Scheuermann

Bruno Keller

Guenter Schmitt

Florian Hermes

Thomas Arnold

Herbert Jung

Peter Rossberg

Christian Golditz

Dominik Sturm

Werner Siol

Klaus Schultes

Sven Balk

Gerd Loehden

Helmut Schwind

Günter Schmitt

Klaus Huebner

Marita Kaufmann

Manfred Braum

Theodor Mager

Andre Hennig

Karl J Folsch

Gerd Löhden

Michael Waldhaus

André Hennig

Gunter Schmitt

Jurgen Hartmann

Jürgen Hartmann

The present invention relates to aqueous binders and to heat-sealing lacquers produced therefrom for heat-sealable coatings which adhere on aluminium without use of any primer, permit good sealability of the coated aluminium foil with respect to PS and/or PVC, and moreover feature good blocking resistance even at temperatures above 40&#xb0; C.

Aqueous binders for heat-sealing applications

The present invention comprises a single-component binder for heat-sealing applications which can be used for the sealing of polyester foils, in particular of polyethylene terephthalate foils (PET foils) with respect to containers made of polystyrene, of PVC, and of polyester. These polyesters can in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here feature not only good seal seam strengths but also in particular good transparency and excellent application properties. A substantive aspect of the invention is that the sealing can be achieved without addition of adhesion promoters, in particular without addition of adhesion promoters based on polyvinyl chloride (PVC) or on polyester, and that barrier properties and sealing properties achieved in respect of containers made of PS and of PET are nevertheless at least comparable with, and sometimes better than, those achieved with heat-sealing systems already marketed.

Directly attaching, halogen-free, fast-drying, heat-sealing binder for sealing polyester films to polystyrene, polyester or PVC

The present invention relates to aqueous binders and to heat-sealing lacquers produced therefrom for heat-sealable coatings which adhere on aluminum without use of any primer, permit good sealability of the coated aluminum foil with respect to PS and/or PVC, and moreover feature good blocking resistance even at temperatures above 40&#xb0; C.

The invention relates to a heat-sealing system consisting of an olefin polymer or olefin copolymer A, a methacrylate copolymer B, a graft polymer AB that is composed of the aforementioned components, a polyester C and an optional polymer D or an optional polymer blend D, in addition to a solvent or solvent mixture L. The heat-sealing system is characterised by a high heat resistance, excellent barrier properties and short sealing times in relation to various plastics and aluminium foil or PET film.

Heat-sealing compound for sealing aluminium foil and polyethylene terephthalate film to polypropylene, polyvinyl chloride and polystyrene containers

The invention relates to a hot sealing system comprised of an olefin polymer or of an olefin polymer A, of a methacrylate polymer B, of a graft polymer A-X consisting of the above-mentioned constituents and of a solvent or solvent mixture. The hot sealing system is characterized by having a high thermal stability and short sealing times.

Hot sealing compound for aluminum foils applied to polypropylene and polystyrene

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 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

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.

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Seeheim-Jugenheim, Germany

Michael Wicke