Baypren 253 Polychloroprene Bayer Rubber - Elastomer >> Chlorinated rubber / Chloroprene, CR ADHESIVE >> Solvent based Poly-2-chlorobutadiene-1,3 Baypren 253 is a chloroprene rubber with a medium rate of crystallisation which gives solutions of very high viscosity and meets the special requirements of the adhesives industry. As Baypren 253 is not modified with sulphur or thiuram, it is particularly suitable for adhesives with minimal discolouration tendency. Pale to light-brown, flat chips which discolour on exposure to light, powdered with talc to maintain the free-flowing properties (powder content max. 1 %). polychloroprene for the production of adhesives with a long open time and high initial strength. Poly-2-chlorobutadiene-1,3. Polychloroprene rubber with a medium rate of crystallisation for the production of solventborne adhesives with minimal discolouration tendency and a long open time and high initial strength. Gives solutions with high viscosity. Not modified with sulphur or thiuram.