Abstract: By processing fibres and filaments of thermotropic polymers from anisotropic melt, films and mouldings having predeterminable properties are formed.

Abstract: A method for making a light-collector of a transparent plastic and a fluorescent dye, wherein the monomers forming transparent plastics are mass-prepolymerized in the presence of radical catalysts and the fluorescent dye is added before, during or at the end of prepolymerization, and then polymerizing the mixture to completion by adding another catalyst, also at pressures of from 2 to 20 bars and at temperatures of from 50.degree. to 160.degree. C., and the use of the light-collector thus produced in combination with photovoltaic elements, preferably based on Ga/As or Si.

Abstract: Thermoplastic, branched aromatic polyphosphonates with average molecular weights (number average M.sub.n) of from 11,000 to more than 200,000, obtainable by transesterifying (a) from 97 to 100 moles of at least one diaryl phosphonate, and (b) from 0 to 3 moles of at least one triaryl phosphate--the sum of the moles of (a) and (b) being 100--with (c) from 90 to 99 moles of at least one aromatic dihydroxy compound, and (d) from 0 to 3 moles of at least one aromatic trihydroxy or tetradhydroxy compound--with the proviso that at least one of the components (b) and (d) is present in a quantity of at least 0.001 mole and that, where (b) and (d) are used, the maximum limit on the moles is 3.0.

Abstract: Thermoplastic, branched aromatic polyphosphonates with average molecular weights (number average M.sub.n) of from 11,000 to more than 200,000, obtainable by transesterifying (a) from 97 to 100 moles of at least one diaryl phosphonate, and (b) from 0 to 3 moles of at least one triaryl phosphate--the sum of the moled of (a) and (b) being 100--with (c) from 90 to 99 moles of at least one aromatic dihydroxy compound, and (d) from 0 to 3 moles of at least one aromatic trihydroxy or tetrahydroxy compound--with the proviso that at least one of the components (b) and (d) is present in a quantity of at least 0.001 mole and that, where (b) and (d) are used, the maximum limit on the moles is 3.0.

Abstract: Polyester phosphonates based on aromatic dicarboxylic acids and aromatic dihydroxy compounds exhibit a low flammability and surprisingly improved mechanical characteristics, particularly an excellent dimensional heat stability.

Abstract: Isolating thermoplastic or thermoelastic polymers in the form of a powder of limited water and precipitant content and uniform grain size from their aqueous dispersions wherein(i) a polymer dispersion and a precipitant are intensively mixed at an uptake of mechanical energy of 0.2 to 0.6 KWh per m.sup.3 of dispersion thus causing high turbulence,(ii) the polymer is precipitated while in this state of high turbulence at a temperature below the sintering temperature of the polymer,(iii) the precipitated polymer particles are agglomerated and hardened while still in contact with the aqueous liquor either in one or in several stages, and(iv) the aqueous liquor and agglomerated polymer particles are separated from one another.

Abstract: Moulding compositions based on ABS-graft polymers, containing:A. 5 to 70 parts, by weight of a graft polymer obtained by grafting 20 to 60 parts by weight of a mixture of styrene and acrylonitrile in a ratio, by weight, of 95 : 5 to 60 : 40 onto 80 to 40 parts, by weight, of polybutadiene or a butadiene copolymer with a butadiene content of > 30% with an average particle diameter of 0.26 to 0.65 .mu. and a grafting degree of 0.15 to 0.7;B. 0 to 50 parts, by weight, of a graft polymer obtained by polymerizing 40 to 60 parts, by weight, of a mixture of styrene and acrylonitrile in a ratio, by weight, of 95 : 5 to 60 : 40 onto 60 to 40 parts, by weight, of polybutadiene or a butadiene copolymer with a butadiene content of more than 30%, with an average particle diameter of from 0.05 to 0.25 .mu. and a grafting degree of 0.4 to 0.9; andC. 25 to 95 parts, by weight, of a copolymer of styrene and/or .alpha.

Abstract: Moulding compositions containingA. 6 to 30 parts by weight of graft polymer obtained by grafting 20 to 60 parts by weight of a mixture of styrene and acrylonitrile in a ratio by weight of 95 : 5 to 60 : 40 onto 80 to 40 parts by weight of polybutadiene or a butadiene copolymer with a butadiene content of at least 30% with an average particle diameter of 0.26 to 0.65.mu. and a grafting degree of 0.15 to 0.7;B. 14 to 45 parts by weight of a graft polymer obtained by polymerizing 40 to 60 parts by weight of a mixture of styrene and acrylonitrile in a ratio by weight of 95 : 5 to 60 : 40 onto 60 to 40 parts by weight of polybutadiene or a butadiene copolymer with a butadiene content of at least 30%, with an average particle diameter of 0.05 to 0.25.mu. and a grafting degree of 0.4 to 0.9; andC. 25 to 80 parts by weight of a copolymer of styrene and/or .alpha.