Teroson Gmbh

Henkel-teroson Gmbh

E.a.p. Akustik Gmbh

Klaus Ruch

Ingolf Scheffler

Karl Wesch

Wolfgang Ritter

Michael Beck

Manfred Rein

Gunter Butschbacher

Hans-Hermann Potthoff

Rainer Joesel

A plastisol composition containing plasticizers, fillers and styrene copolymers selected from (a) styrene, .alpha.-methyl styrene and p-methyl styrene, and (b) 3 to 20% by weight, based on the weight of the styrene copolymers, of a comonomer selected from methacrylic acid, acrylic acid and itaconic acid, and optionally (c) a crosslinking comonomer, wherein the maximum of the molecular weight distribution of said copolymers is greater than 1 million as determined by gel permeation chromatography.

Plastisol composition

A plastisol composition based on styrene copolymers, plasticizers and inorganic fillers contains, as styrene copolymers, copolymers which can be produced by emulsion polymerization and contain a) styrene and/or .alpha.-methyl styrene and/or p-methyl styrene and b) 3 to 20 wt.-% (relative to the copolymer) methacrylic acid and/or acrylic acid and/or itaconic acid. To increase the abrasion resistance, further crosslinkers or strengtheners can be added. The plastisols are suitable for use in motor vehicle construction as underseal material, as an adhesive for hood lining, as a compound for grille protection or as a spot-welding paste, and in the packaging products industry as a sealing compound for container closures or as a seam seal or as a flange-joint adhesive for tin cans.

Acoustically active plastisols

A mass and spring system for soundproofing, particularly in vehicles, comprises a bending-soft heavy plastic layer as the mass and a soft layer as the spring, which is applied to the sound radiating surface or wall and which is a gel of 10 to 50% by weight of an organic polymer or silicone polymer and 50 to 90% by weight of a plasticizer compatible therewith, which at room temperature has a modulus of elasticity E'.ltoreq.5.times.10.sup.5 Pa and an internal loss factor d.gtoreq.0.5.

Mass and spring systems for soundproofing

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Wiesloch, Germany

Klaus Ruch