摘要:
The process for producing polymer blends by reacting at least one aminonitrile with water in the presence of thermoplastic polymers and optionally further polyamide-forming monomers comprises the following steps: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 35×106 Pa to obtain a reaction mixture, (2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase and the first gas phase is separated from the first liquid or the first solid phase or the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water, which phase may contain thermoplastic polymers and optionally further polyamide-forming monomers, at a temperature from 150 to 370° C. and a pressure from 0.1 to 30×106 Pa to obtain the polymer blend, wherein in one or more of the steps the thermoplastic polymers and optionally further polyamide-forming monomers are added.
摘要:
A device for the treatment of substrates has a fluid container filled with a treatment fluid and at least one substrate receiving device. A lifting device is provided for lifting and lowering the at least one substrate receiving device out of and into the treatment fluid. The lifting device is arranged laterally at the container and has parts that are positioned above the container and the treatment fluid. A vapor suction device with a suction channel is provided for exhaustion of vapors in an area in which parts of the at least one lifting device are located above the treatment fluid. In the area above the treatment fluid, a plate is provided having an opening to which the suction channel is connected.
摘要:
Flame-retardant thermoplastic molding materials containing A) at least one polyphenylene ether, B) at least one vinylaromatic polymer, and C) at least one flameproofing agent furthermore comprise D) as an antidrip agent, a high molecular weight polymer based on acrylamide having a viscosity of more than about 1.5 mpas, measured in 0.1% strength aqueous solution at 25° C., and are used for the production of fibers, films and moldings.
摘要:
Thermoplastic molding materials contain A) polycarbonates B) elastomeric graft copolymers, C+D) two different, thermoplastic copolymers based on styrene or &agr;-methylstyrene, E) copolymers based on alkyl(meth)acrylate and F) polymeric, OH-containing compounds.
摘要:
Flame-retardant thermoplastic molding materials contain A) from 5 to 97.7% by weight of a polyphenylene ether, B) from 1 to 93.7% by weight of vinylaromatic polymers, C) from 0 to 50% by weight of impact modifiers, D) from 0.3 to 20% by weight of sheet silicates which contain one or more nitrogen-containing compounds in amounts of from 0.1 to 50% by weight, based on the sheet silicates, E) from 1 to 20% by weight of a flameproofing agent and F) from 0 to 60% by weight of further additives.
摘要:
Thermoplastic molding compositions compriseA) from 5 to 97.9% by weight of a vinylaromatic polymer with syndiotactic structure,B) from 2 to 90% by weight of a low-viscosity polyamide with a viscosity number VN in the range from 50 to 150 ml/g andC) from 0.1 to 50% by weight of a polar-group-modified polyphenylene ether.
摘要:
Thermoplastic molding compositions modified with carboxyl groups and comprising:A) at least one polyarylene ether andB) if desired, at least one filler or reinforcing material, wherein the molding composition also includesC) at least one modified polyarylene ether which contains carboxyl groups and has recurring structural elements of the formulae I and II ##STR1## where Ar, Ar.sup.1, Ar.sup.2, Ar.sup.3, T, Z, Y, t, q, x and n are as variously defined, andR.sup.1 is H, C.sub.1 -C.sub.6 -alkyl or --(CH.sub.2).sub.n --COOH; and where the molar ratio of units of the formula I to units of the formula II is in the range from 0.05:99.95 to 99.95:0.05;the use of these molding compositions for producing films, fibers and shaped articles, and the objects produced using the molding compositions, are described.
摘要:
Thermoplastic molding materials containA) from 4 to 95% by weight of a semicrystalline, partly aromatic copolyamide composed ofa.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid,a.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acid,a.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine anda.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms,the molar percentages of components a.sub.1) to a.sub.4) together giving 100%, andB) from 4 to 95% by weight of a polyolefin homo- or copolymer or a mixture thereof,C) from 1 to 20% by weight of a compatibilizer,D) from 0 to 20% by weight of an elastomeric polymer,E) from 0 to 50% by weight of a fibrous or particulate filler andF) from 0 to 30% by weight of conventional additives and processing assistants,the percentages by weight of components A to F together giving 100%.
摘要:
Polymers (A) containing oxazine groups are prepared by reacting a polymer (T) containing nitrile groups with a monoaminoalcohol in the presence of a catalyst by a process in which the polymer T is reacted in the melt with the monoaminoalcohol in the presence of the catalyst and in the absence of a solvent.
摘要:
Thermoplastic molding materials contain A) from 1 to 99% by weight of a partly aromatic copolyamide composed of a.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid, a.sub.2) from 6 to 25 mol % of units which are derived from isophthalic acid, a.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine and a.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms, the molar percentages of components a.sub.1) to a.sub.4) together giving 100%, B) from 1 to 99% by weight of a polyetherimide, C) from 0 to 30% by weight of a polymeric component having OH groups, D) from 0 to 60% by weight of fibrous or particulate fillers or mixtures thereof, E) from 0 to 40% by weight of rubber impact modifiers and F) from 0 to 40% by weight of conventional additives and processing assistants.