| http://www.w3.org/ns/prov#value | - They are also obtainable under the trade names Celite and Dicalite The binder particles which serve to bind the layer particles into an integral mass may comprise elastomers such as butadiene-styrene copolymers (GRS or Buna S), natural rubber, butadiene-isobutylene copolymers, polyisobutylene, organo-silicon elastomers, butadiene-acrylonitrile copolymers, and chloroprene polymer.
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