Einige Entwicklungslinien in der Polymerchemie

5. Internationales Makromolekulares Symposium

Abstract

Some topical problems from the field of preparative polymer chemistry are described as a result of preceding development stages and their reciprocal relations are discussed. 

Polycondensation and polymerization products are developing towards a higher order of the macromolecules. This may refer to more regular arrangements of the basic units (i.e. sequences of linkage) or of the comonomers. It is shown which fundamental possibilities exist today. A more regular structure as to number and length of side chains, network, pore size, and pore distribution is intended also with crosslinked polymers. Concerning poly additions it is attempted to obtain new polymers with specific properties by varying the basic materials and experimental technique. The application of other addition reactions results in new types of polymers. Apart from these classical polyreactions there are, however, numerous new polyreactions leading to the formation of macromolecules by completely different mechanisms. The following examples are discussed: Polymers by photocyclo-addition, metathese-reaction, oxydative coupling, N-alkylation, and Wittig reaction.

The second paragraph is to show how different polymers with specific functional groups are evolving from the basic conception of ion-exchange resins. These polymers may be classified under the notions: “Polymer reagents”, “polymer catalysts”, “polymer complexing agents”, “enzyme resins”, and “affinity resins”. The reactivity of certain polymers opens them new applications out of which only the medical / pharmaceutical sector is mentioned here. This may roughly be classified into polymers as surgical or orthopaedic materials, pharmaceutical agents, and galenics.