Abstract: The invention relates to a process for the production of a layered composite structure comprising (1) a semi-permeable membrane made of a polymer composition comprising a polyetherester elastomer and (2) at least one web layer bonded to the membrane, wherein the process comprises a step wherein a melt layer of the polymer composition is applied onto the at least one web layer, and wherein the polyetherester elastomer comprises polyether soft segments formed from poly(alkylene-ether)glycols comprising alkylene-ether segments formed from ethylene oxide and polyester hard segments consisting of ester units derivable from short chain diols and dicarboxylic acid consisting of 98-65 mole % terephthalic acid (TPA), 2-35 mole % isophthalic acid (IPA) and optionally 0-20 mole % other dicarboxylic acids, wherein the mole % is relative to the total molar amount of dicarboxylic acid.

Abstract: The invention relates to a stretched plastic tube obtainable from a polymer composition comprising a copolyester elastomer, and comprising two end-parts and an elongated part between the end-parts wherein at least one end-part is a stretched end-part obtained by mechanically stretching of at least a section of that end part, characterized in that the stretched end-part comprises an outer surface layer area consisting of a first thermoplastic polymer composition (A) comprising a first copolyester elastomer (A-1) and 0-0.2 wt. % carbon black relative to the total weight of the thermoplastic polymer composition (A). The invention also relates to a Plastic tube obtainable from a polymer composition comprising a copolyester elastomer, wherein the plastic tube is a plastic tube comprising: (i) an outer surface layer consisting of a first thermoplastic polymer composition (A) comprising a first copolyester elastomer (A-1) and 0-0.2 wt.

Abstract: The invention relates to a method or process for adhering a polyamide part or layer to a polyester part or layer, and to multilayer constructions and multicomponent parts comprising a first part or layer made of a polyamide material and a part or layer made of a polyester material. The polyester material comprises a thermoplastic polyester comprising urethane linkages and/or a polyurethane elastomer and a thermoplastic polyester.

Abstract: The invention relates to a process for the production of a layered composite structure comprising (1) a semi-permeable membrane made of a polymer composition comprising a polyetherester elastomer and (2) at least one web layer bonded to the membrane, wherein the process comprises a step wherein a melt layer of the polymer composition is applied onto the at least one web layer, and wherein the polyetherester elastomer comprises polyether soft segments formed from poly(alkylene-ether)glycols comprising alkylene-ether segments formed from ethylene oxide and polyester hard segments consisting of ester units derivable from short chain diols and dicarboxylic acid consisting of 98-65 mole % terephthalic acid (TPA), 2-35 mole % isophthalic acid (IPA) and optionally 0-20 mole % other dicarboxylic acids, wherein the mole % is relative to the total molar amount of dicarboxylic acid.