C»HnBr

Method D The preformed sodium alkoxide (25 mmol), Aliquat (0.2 g, 0.5 mmol) and n-C HnBr (1.93 g, 10 mmol) are stirred for 10 min and then allowed to stand until the reaction is complete. Et20 (50 ml) is added and the mixture is filtered through Florisil. Evaporation of the filtrate yields the product. 

C Hn, Benzene, l,3-butadiene-l,4-diyl-bis-, cobalt complex, 26 195 C HnBr, Benzene, l-bromo-2,4,6-tri-rm-butyl-, 27 236... 

C HnBr.NO, N -[3.6 Dibrom-4-acetoxy-2.d.aimethyl-benzyl]-N naphthyl acetamid 13, 647. 

HNBR—Highly Saturated Nitrile is moderately priced and is available in acrylonitrile levels similar to NBR. It has excellent strength and is generally used with a mechanical restraint or reduced extrusion gap. It has good general chemical and very good temperature compatibility, up to 175°C or 200°C. HNBR is unusual in that it does not lose hardness and modulus as the temperature increases to nearly the same extent as other elastomers. 

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