Dsm N.v.

Markus J Bulters

Ronald M Schellekens

Hans K Van Dijk

Olav M Aagaard

Gerard P De Vries

Matthias J Brouns

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

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.

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Sittard, Netherlands

Markus J Bulters