Dsm N.v.

Stamicarbon B.v.

Ronald M Schellekens

Hans K Van Dijk

Markus J Bulters

Pieter J Lemstra

Hendrikus J Rutten

Olav M Aagaard

Matthias J Brouns

Marcus J Bulters

Floribertus C Mokveld

Gerard P De Vries

The invention relates to a process for the production of an electrically conducting article, in which process a polymer composition, comprising a carrier polymer, is stretched and, during stretching of the polymer composition, polymerisation of monomers takes place to form a conjugated polymer, characterised in that the polymer composition contains precursor monomers prior to stretching and the monomers are obtained by activating precursor monomers during the stretching step. It has been found that using the process according to the invention articles can be obtained which, in addition to good electrically conducting properties, also have good mechanical properties.

Process for the production of an assembly conducting article

The invention relates to a process for preparing a polymer in which in situ polymerization of monomers takes place in the presence of a catalyst, in which the monomers are obtained by in situ activation of precursor monomers. According to the invention a premature polymerization is avoided, but polymerization only starts at the desired moment.

Process for preparing polymers and mouling compounds based thereon

The method concerns preparing a polymer composition containing an electrically conductive polymer which is formed, in the presence of a catalyst, from polymerizable monomer units that are converted from non-polymerizable precursor monomers with the aid of a sufficiently energy-intense light source. In this method according to the invention is that the precursor monomers have a structure according to formula (I). The method according to the invention makes it possible to very easily and rapidly, and thus economically, prepare a polymer composition containing an electrically conductive polymer. Furthermore, the method according to the invention permits a polymer composition to be produced that contains an electrically conductive polymer in specifically pre-selected areas.

Method for the preparation of a polymer composition containing an

A microporous film with improved resistance to elevated temperatures from a first, thermoplastic polymer, the internal and external surfaces of the film being provided with a continuous coating layer of a second polymer having a higher softening temperature than the first polymer and process for coating a film of a first polymer with a layer of a second polymer.

Temperature resistant microporous film

Method for the preparation of a polymeric shaped article containing an electrically conductive polymer wherein a base shaped article possessing electrically conductive properties is moved along an anode, at least part of the article being in contact with the anode, in the presence of an electrolyte-containing medium containing monomer units, which on polymerization form an electrically conductive polymer and wherein a voltage is applied between the anode and a second electrode which is in contact with the electrolyte-containing medium. It has appeared that, in the method according to the invention, the shaped article does not adhere to the electrode so that the method may be practiced continuously. A further advantage of the shaped article failing to adhere to the electrode is that the method according to the invention generates very little waste. Furthermore, it has appeared that the method according to the invention allows a shaped article to be produced with a very short polymerization time, the electrically conductive polymer in which being homogeneously distributed. The applied base shaped article does not swell during wetting, so that the mechanical properties of the base shaped article do not deteriorate. As a result, if the method is applied, for instance, continuously, a higher rate of production can be applied.

Method for the preparation of a polymeric shaped article containing an

The invention relates to a process for the preparation of an intrinsically conductive moulding compound obtained by in situ polymerization of monomers which form an intrinsically conductive polymer after polymerization, in the presence of a matrix polymer and a catalyst, the matrix polymer being dissolved in an essentially solvent free monomer, after which the solution obtained is brought into the desired form and the monomers are polymerized in situ in the presence of a catalyst. Moulding compounds obtained with the process accordingly to the invention can be used in batteries electronic components (diodes, transistors), electrical wiring, coatings and in EMI-shielding attributes.

Intrinsically conductive moulding compound

The invention relates to an object and a process for the preparation of an object from an ethylene-vinyl alcohol copolymer with high tensile strength and modulus, by converting:

Objects from ethylene vinyl alcohol copolymers having a high strength

Polyvinyl alcohol articles of high strength and modulus are obtained by thermoreversible gelation of a polyvinyl alcohol solution, extraction of the gelation solvent using a mixture of a low alcohol or ketone and water, followed by high stretching. Preferably, a mixture of 5-80 vol. % of acetone and 95-20 vol. % of water is used as extractant. With this process extraction times of only 3-10 minutes are required.

Process for the preparation of polyvinyl alcohol articles of high

High modulus and high strength articles of polyvinylalcohol are obtained by thermoreversible gelation of a 5-50 wt. % solution of a polyvinylalcohol with an M.sub.W of 2.5.times.10.sup.4 to 5.times.10.sup.5 in water, followed by solvent removal and high stretching. Pref. gelation is obtained by cooling to a temperature of at least 40.degree. C. below the gelation temperature. With this process low costs of solvent removal and regeneration are obtained.

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Meerssen, Netherlands

Ronald M Schellekens