A NEW ACRYLONITRILE-BUTADIENE RUBBER FOR MOLDED ARTICLES

Perbunan NT is an acrylonitrile-butadiene rubber manufactured by a new , more environmentally compatible process which replaced the former sa les product Perbunan N. like Perbunan N, Perbunan NT is particularly s uitable for the manufacture of moulded articles. Perbunan NT is charac terised by: a high standard of physical properties better rheological properties than Perbunan N. A high rate of vulcanisation is combined w ith adequate flow properties. There is more efficient mould filling th an with Perbunan N under the same injection pressure, as shown by test s using the ''Rheovulkameter''; a considerably lower injection pressur e is needed to achieve the same degree of mould filling. In most cases , it shows less mould fouling with Perbunan N.