Posts Tagged ‘elastomer’

“NBR”

Definition NBR stands for Nitrile Butadiene Rubber or Acrylonitrile Butadiene Rubber or Buna-N or Perbunan. NBR is a synthetic rubber which belongs to the family of unsaturated copolymers of 2-propenenitrile and various butadiene monomers (1,2-butadiene and 1,3-butadiene) Comments NBR is produced in an emulsion polymerization system. The water, emulsifier/soap, monomers (butadiene and […]

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Polyurethane

Definition: “Polyurethane“, like all plastics, is a polymer made by reacting diisocyanates (MDI and/or TDI) with a range of Polyols. Depending on the desired end product, chemical formulations may contain other ingredients such as catalysts, blowing agents and possibly flame retardants. Comments: Polyurethanes were invented back in the 1930s by Professor Dr. Otto […]

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