Hoechst Aktiengesellschaft

Basell Polyolefine Gmbh

Basell Poliolefine Italia S.r.l.

Thomas Mecklenburg

Michael Feldhues

Gunther Kampf

Paola Massari

Marco Ciarafoni

Takamasa Harada

Dieter Ohlendorf

Claus Escher

Hans-Rolf Dubal

Gerhard Illian

Mikio Murakami

Mara Destro

Klaus Klemm

Peter Wegener

Juergen Rohrmann

Jürgen Rohrmann

Erik Hans Licht

Karl Pampus

A polyolefin composition made from or containing:

Filled polyolefin composition

The invention relates to a glass fiber-reinforced molding composition composed of an olefin polymer, in particular a propylene polymer. The molding composition comprises an olefin polymer which contains 5-50% by weight of glass fibers which are bonded to the olefin polymer by means of a compatibilizer, and from 10to 1% by weight, preferably from 10to 10% by weight, of a phthalocyanine pigment as the nucleating agent. The low costs and the fact that even a very small fraction of the phthalocyanine pigment in the polymer leads to sufficient nucleation ensures extremely inexpensive production. The nucleation with the phthalocyanine pigment leads to an improvement in the impact strength, and also in the yield stress and tensile strain at break of the molding composition.

Molding compositions of a glass fiber-reinforced olefin polymer

A polypropylene molding composition which comprises, as the reinforcing substance, a clay mineral of specific composition shows an improved profile of properties compared with known polypropylene molding compositions reinforced with talc. The impact strength of molding compositions which have not been finished with impact modifiers increases considerably, while the strength, in particular the ball indentation hardness, of molding compositions finished with impact modifiers increases. Generally, an improvement in scratch resistance and surface quality is to be observed compared with molding compositions reinforced with talc.

Reinforced polypropylene molding composition

Switching and display elements based on ferroelectric liquid-crystals often exhibit a pronounced optical hysteresis which results in the appearance of so-called ghost images. This phenomenon can be markedly reduced or even suppressed if at least one of the two orienting layers are in direct contact with the electrodes and is composed of an electrically conductive polymer of the formula (I): ##STR1## in which R.sup.1, R.sup.2 =independently of each other, H, or straight-chain or branched alkyl or alkoxy containing 1-16 carbon atoms, or halogen,

Electrically conductive polymers and their use as orienting layer in

The invention relates to intrinsically electrically conductive polymers, preferably oligomers, which, in the oxidized form, are completely soluble in dipolar aprotic solvents at room temperature and which contain structural units which are derived from at least one monomer of the formula (I) ##STR1## in which R.sup.1 is a C.sub.1 -C.sub.2 -alkoxy group or --O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.3 with n=1 to 4 and R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.12 -alkyl group, a C.sub.1 -C.sub.12 -alkoxy group or --O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.3 with n=1 to 4, or R.sup.1 and R.sup.2 together are --O(CH.sub.2).sub.m --CH.sub.2 or --O(CH.sub.2).sub.m --O-- with m=1 to 12. The invention also relates to a process for the preparation of these polymers by electrochemical polymerization of at least one monomer of this formula (I) in the presence of a conductive salt, the anode having a specific surface area of at least 0.01 m.sup.2 /g and preferably a gauze, sponge, fabric or felt structure, the electrolyte solvent being dipolar and aprotic and the electrolyte system being moved only slightly or not at all relative to the anode. The polymers according to the invention can readily be used especially for coating purposes.

Soluble, electrically conductive polymers, process for preparing them,

In electrically conducting polymers in their oxidized (doped) form, which are known per se, the anions can be exchanged in any desired manner, if the polymer in solution is brought into contact with a salt containing the anion to be exchanged and the solution equilibrium is established, taking account of the solubility product of the salts present. In this manner, the properties of the electrically conducting polymers can be adapted to different purposes.

Process for modifying electroconductive polymers using ion exchange

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Butzbach, Germany

Thomas Mecklenburg