| http://www.w3.org/ns/prov#value | - The polymeric composition of the invention may also include cross-linking agents such as aldehydes, ketones and glyoxals, process coadjuvants and release agents, and lubricants which are normally incorporated in compositions for moulding or extrusion, such as fatty acids, esters of fatty acids, higher alcohols, polythene waxes, LDPE, fungicides, flame-proofing agents, herbicides, antioxidant, fert
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