Patent ID: 9067373
Filing Date: 2015-06-30
Classification: B29D,C08J,C08K,C08L

Abstract:
1. A process for the manufacture of a flexible pipe from a composition comprising: a polymeric part (a) comprising: a polydiorganosiloxane (b) having a minimum Williams plasticity of 30 determined by the ASTM 926 test method and an average of at least 2 alkenyl radicals per molecule, an organohydrido silicon compound (c) having an average per molecule of at least 2 silicon atoms bound directly to a hydrogen atom, a hydrosilylation catalyst (d) which process comprises (i) the provision of a cured polydiorganosiloxane (B1) obtained by crosslinking of the compounds (b) and (c) in the presence of catalyst (d), (ii) causing the cured polydiorganosiloxane (B1) to be dispersed in the polymeric part (a) thus obtaining a thermoplastic elastomer complying with the requirement of standard KTW-270(A) in relation to drinking water contamination, and (iii) moulding the thermoplastic elastomer into the flexible pipe.