Document b51vwLbYnvmERaZEg3VgZyx33

OECD polymer of low concern (PLC) criteria and additional customeer related criteria OECD = Organisation for Economic Co-operation and Development Polymers currently in use Polymer composition MW, Mn, MWD Wt-% oligomer Electrical charge Fluoropolymer PTFE TFM-PTFE PFA FEP Alternative Materials (just as examples) PE PS PA 66 PMMA PPS PI Symbols Meaning Accept Not fulfilled Accept with limitations Nearly not fulfilled Legend Polymer composiPtioolnymer composition, structure & elemental composition; including CAS no. NumbeMr aWve, rMagne, MmWoleDcular weight and oligomer content are used criteria for PLC assessment. MWD --> polydispersity index Wt-% oligomer Weight % of oligomers < 1000 Da El. Ch. oErleicotnricaclhcahraarcgter can be: anionic, cationic, amphoteric, nonionic; cationic polymers associated with aquatic toxxicity Reactive functional groups (RFG) Atom or associated group of atoms in a chemical structure that is intende Functional group equivalent weight (FGEW) FGEW is defined as the ratio of Mn to the number of functional groups in Low MWArleeacchheambilceasl molecules, either inorganic or organic, that migrate (i.e. leach) out of the polymer Water/lipid solubility,octanol water partition Water solubility = extent to which a compound will dissolve in water; neg s that are smPaalrl teicnloeusgizheto reach the deep lung upon inhalation are associated with adverse health effects. Polymer particles should be l, chemical, bPoiolylomgiecrasl ttarabnilsitfyormation. Breaking down into smaller particles is ccritical. Molecules with Mn<1000 Da are capable of cros To be aTssheesrsmedalwsthaebniliutysed as intended or in extreme temperature during disposal. Thermal stability testing may involve TGA AbiotiPcosltyambeilirtsyare stable, monomers are not. Abiotic degradaton may involve sunlight, water or oxygen. Is assesseBdiobtyicwshtaebthileitrythe polymer is degraded by microorganisms under oxygenated (aerobic) or anoxic ( anaerobic) conditions suited for inliners of pipelines, pumps, valves The material needs a certain flexibility to be able to make an inliner out o Solvent Stability We use isobutanol, chloro benzene, di chloro benzene aceton and som ot Acid and caustic stability We use HCL, sulfuric acid, phosphoric acis and acetic acid as well as causti Temperature stability up to 160C Our processes run at temperatures up to 160 C and pressures up to 10 b Reactive functional groups (RFG) Functional group equivalent weight (FGEW) Low MW leachables Water/lipid solubility,octanol water partition Particle size Polymer stability Thermal stability Abiotic stability WD --> polydispersity index ated with aquatic toxxicity hemical structure that is intended or can be reasonable expected to undeergo facile chemical reaction number of functional groups in the polymer the polymer pound will dissolve in water; negligible water solubility < 1x10E-6 mg/L = 1 ppt cts. Polymer particles should be > 5 m Mn<1000 Da are capable of crossing cell membranes ity testing may involve TGA ater or oxygen. anoxic ( anaerobic) conditions be able to make an inliner out of it. oro benzene aceton and som other solvents. and acetic acid as well as caustic soda. 160 C and pressures up to 10 bars.  Heubach Colorants Germany GmbH Biotic stability suited for inliners of pipelines, pumps, valves Solvent Stability Acid and caustic stability Temperature stability up to 160C Application in chemical industrie aquaous media pipelines remounting of steal pipes with PTFE inliner connection from and to PTFE lined valves elastomers in double acting mechanical seals sealings of solvent pipelines sealings of acid (e.g. HCL) pipelines sealings of caustics (e.g. NaOH) pipelines pipelines of media with high temperature Sealing of glasslined flanges Sealing of glass flanges waste gas pipelines waste water pipelines sealings in valves according to TA Luft Symbols Fluoropolymers Sealing made of Graphite Aramid fibres Meaning Accept Not fulfilled Accept with limitations Nearly not fulfilled Rubber