Additives for Polvmers November 1990

Review of additives The July, 1990 issue of “Kunststoffe German Plastics” contains an extensive techno-economic review of the following additive types:

PVC stabilizers; plasticizers; PVC processing aids; rheological additives for PVC plastisols; antistatic agents and conductivity improvers; slip agents and mould release agents; peroxide initiators; compatibilizers and stabilizers for polyamides and thermoplastic polyesters; fillers; and chemicals/additives for rubbers.

PVC stabilizers - in the medium and long-term, emphasis will be on further developments in cadmium and lead-tree systems.

Plasticizers - more attention is being given to toxicological studies in order to provide a more accurate risk assessment.

PVC processing aids - the general composition and mechanism of these processing aids is described, and new developments summarized.

Rheological additives for PVC plastisols - the development and applications of these additives, ranging from single diluents to third generation additives are reviewed.

Antistatic agents and conductivity improvers - no new important developments in antistats. Some interesting developments in applications for conductive plastics.

Slip agents and mould release agents - the market for slip agents over the past few years has exceeded predictions.

Peroxide initiators - new products required to meet safety and environmental issues and the requirements of special formulations, e.g. masterbatches, suspensions, etc. are reviewed.

Compatibilizers and stabilizers for polyamides and thermoplastic polyesters - primary aim is to achieve greater toughness, improved heat distortion resistance, better processability, chemical stability, or higher strength than is found with the basic components of the blends.

Fillers - the role of basic mineral filler characteristics, particle size and shape, and the benefits of surface coating are reviewed.

Rubber chemical and additives - two main requirements are: 1) an increase in environmental and toxicological needs, and 2) more exacting requirements with regard to compounding, e.g. faster and/or continuous production methods.

Kunststoff~ 1990,80, (July), 808-852

01990 Elsevier Science Publishers Ltd.