A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.

A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.

A method of wet spinning poly (3,4-ethylenedioxythiopene):poly (styrenesulfonate) or PEDOT:PSS fibers produces PEDOT:PSS fibers having a unique combination of electrical conductivity, thermal conductivity and Young's modulus properties.

A method of wet spinning poly (3,4-ethylenedioxythiopene):poly (styrenesulfonate) or PEDOT:PSS fibers produces PEDOT:PSS fibers having a unique combination of electrical conductivity, thermal conductivity and Young's modulus properties.

The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.

The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.

A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A.sup.1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I.sup.1≥2), preferred two isocyanate groups (I.sup.1=2), wherein the epoxide compound (B) comprises a epoxide compound (B.sup.1) and an epoxide compound (B.sup.2), wherein the epoxide compound (B.sup.2) is different from the epoxide compound (B.sup.1) wherein the epoxide compound (B.sup.1) comprising at least two terminal epoxide groups (F1≥2), preferred two terminal epoxide groups (F.sup.1=2), linked together by a linking group (L1) and the epoxide compound (B.sup.2) comprising at least two terminal epoxide groups (F.sup.2≥2)), preferred two terminal epoxide groups (F.sup.2=2), linked together by a linking group (L.sup.2), wherein the linking group (L.sup.2) comprises acyclic and covalent bonds to each other free of conjugated multiple bonds within the main chain, wherein the epoxide compound (B.sup.2) is present in the epoxide compounds B.sup.1 and B.sup.2, in an amount of ≥0.01 mol-% to <10 mol-%, preferred 1-9 mol-% more preferred 3-8 mol-% based on the molar ratio the terminal epoxide groups in the epoxide compound (B.sup.1) and of the sum of the terminal epoxide groups in the epoxide compound (B.sup.1) and terminal epoxide groups in the epoxide compound (B.sup.2).

A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A.sup.1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I.sup.1≥2), preferred two isocyanate groups (I.sup.1=2), wherein the epoxide compound (B) comprises a epoxide compound (B.sup.1) and an epoxide compound (B.sup.2), wherein the epoxide compound (B.sup.2) is different from the epoxide compound (B.sup.1) wherein the epoxide compound (B.sup.1) comprising at least two terminal epoxide groups (F1≥2), preferred two terminal epoxide groups (F.sup.1=2), linked together by a linking group (L1) and the epoxide compound (B.sup.2) comprising at least two terminal epoxide groups (F.sup.2≥2)), preferred two terminal epoxide groups (F.sup.2=2), linked together by a linking group (L.sup.2), wherein the linking group (L.sup.2) comprises acyclic and covalent bonds to each other free of conjugated multiple bonds within the main chain, wherein the epoxide compound (B.sup.2) is present in the epoxide compounds B.sup.1 and B.sup.2, in an amount of ≥0.01 mol-% to <10 mol-%, preferred 1-9 mol-% more preferred 3-8 mol-% based on the molar ratio the terminal epoxide groups in the epoxide compound (B.sup.1) and of the sum of the terminal epoxide groups in the epoxide compound (B.sup.1) and terminal epoxide groups in the epoxide compound (B.sup.2).

A method of forming prefabricated units used in production of systems of prosthetic aortic valve transcatheter implantation and prosthetic aortic valve prefabricated unit with an non-thrombogenic smooth surface layer or with a porous fibrous layer constituting a scaffold for epithelium cell culture, intended for manufacturing TAVI system. Stents for covering and solutions of polycarbonate silicones and/or polycarbonate urethanes and/or polyurethane with average molecular weight in the range from 50 000 g/mol to 200 000 g/mol in the solvent DMAC are prepared. Initially a smooth layer of polycarbonate silicone is applied in the electrospinning machine by electrospraying with use of the solution in DMAC with the concentration of 2-8% w/w. and/or a fiber of polycarbonate urethane is applied by electrospinning on the roller with use of the solution in DMAC with the concentration of 8- 20% w/w to obtain the first surface layer, with a specified speed, number of heads, thickness of capillaries, speed of movement, voltage and distance between the capillary and the roller and the specified flow of the solution on the feeding pump and after a certain time the layer covering the roller with thickness of 1-100 μm is obtained. Thereafter the inner intermediate layer of polycarbonate silicone is formed by electrospraying. When the thickness of the layer is approximately 5 to 100 μm the process is stopped and stents are placed on the formed layer and similarly like applying the former intermediate layer the application of the inner intermediate layer is continued on the whole length of the roller. Thereafter the final surface layer is applied like the first surface layer until a prefabricated unit with the polymer material thickness from 50 to 250 μm is obtained.

A method of forming prefabricated units used in production of systems of prosthetic aortic valve transcatheter implantation and prosthetic aortic valve prefabricated unit with an non-thrombogenic smooth surface layer or with a porous fibrous layer constituting a scaffold for epithelium cell culture, intended for manufacturing TAVI system. Stents for covering and solutions of polycarbonate silicones and/or polycarbonate urethanes and/or polyurethane with average molecular weight in the range from 50 000 g/mol to 200 000 g/mol in the solvent DMAC are prepared. Initially a smooth layer of polycarbonate silicone is applied in the electrospinning machine by electrospraying with use of the solution in DMAC with the concentration of 2-8% w/w. and/or a fiber of polycarbonate urethane is applied by electrospinning on the roller with use of the solution in DMAC with the concentration of 8- 20% w/w to obtain the first surface layer, with a specified speed, number of heads, thickness of capillaries, speed of movement, voltage and distance between the capillary and the roller and the specified flow of the solution on the feeding pump and after a certain time the layer covering the roller with thickness of 1-100 μm is obtained. Thereafter the inner intermediate layer of polycarbonate silicone is formed by electrospraying. When the thickness of the layer is approximately 5 to 100 μm the process is stopped and stents are placed on the formed layer and similarly like applying the former intermediate layer the application of the inner intermediate layer is continued on the whole length of the roller. Thereafter the final surface layer is applied like the first surface layer until a prefabricated unit with the polymer material thickness from 50 to 250 μm is obtained.