The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
May. 14, 2009
Daniel Milesi, Voiron, FR;
Daniel Milesi, Voiron, FR;
MULTI-BASE SA, St. Laurent du Pont, FR;
Abstract
A process for the manufacture of flexible pipe from a composition comprising: a polymeric part (a) consisting of a thermoplastic polymer obtained by homopolymerization or copolymerization of a monomer of butene-1, or a blend of a thermoplastic polymer obtained by homopolymerization or copolymerization of a monomer of butene-1 with one or more compatible thermoplastic polymers, 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 hydrosililation 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 and (iii) molding, for example by extrusion, the thermoplastic elastomer into a flexible pipe. The thermoplastic elastomer used and the resulting pipes comply with the requirements of standard KTW-270 (A) in relation to drinking water contamination.