Abstract: A plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties, comprising at least:(I) an outer layer,(III) an inner layer comprising a moulding composition based on polyvinylidene fluoride, and(II) an intermediate layer disposed between said inner layer (I) and said outer layer (III) comprising a moulding composition based on a mixture of(a) polyamide, and(b) polyglutarimide,wherein the adjacent layers (I) to (III) are each adhesively bonded to one another.

Abstract: The present invention relates to a plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties, comprising.(I) at least one outer layer,(II) at least one inner layer comprising a polyvinylidene fluoride molding composition, and(III) a layer, disposed between the inner layer II and the outer layer I, comprising a molding composition comprising a mixture of:(a) polyamide and(b) polyalkyl acrylate,wherein the layers (I)-(III) are adhesively bonded to one another.

Abstract: A plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties comprising:(I) an outer layer made of a moulding compound based on polyamide,(II) an intermediate layer adjacent to the outer layer and made of a moulding compound based on a mixture of:(a) of from 95 to 99% by weight of a linear crystalline polyester, and(b) of from 1 to 5% by weight of a compound having at least two isocyanate groups,wherein the isocyanate groups originating from component (IIb) are present in the mixture of (IIa) and (IIb) in a concentration of from 0.03 to 0.

Abstract: The present invention relates to a composite material having improved thermal and mechanical properties which comprises at least:(I) an outer layer made of a molding composition based on polyvinylidene fluoride, and(II) an intermediate layer which neighbors the inner layer and is made of a molding composition based on a mixture of (a) from 40-90% by weight a polyamide and (b) from 60-10% by weight a polyglutarimide,wherein the two layers (I) and (II) are adhesively bonded to one another.

Abstract: Multilayer plastic pipe comprising at least one outer layer based on polyamide and at least one layer of a linear, crystalline polyester modified by means of an isocyanate mixture exhibits improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties.

Abstract: Laminates having improved resistance to chemicals and improved frictional bonding between the layers are to be provided.This is achieved byI. a layer of a molding composition based on polyamidecombined withII. a layer of a molding composition based on a modified polyester.Laminates having the desired improved property profile can be obtained by means of the invention.

Abstract: A plastic pipe having improved resistance to methanol-containing fuels and improved mechanical properties is provided. This is achieved by a multilayer plastic pipe consisting of at least one outer layer based on polyamide and at least one layer of a linear, crystalline polyester modified with isocyanates. With the aid of the invention it is possible to obtain plastic pipes having improved barrier properties against methanol-containing fuels and dimensional stability and mechanical load-bearing capacity.

Abstract: Aromatic polyamides having improved stability with respect to thermal oxidation are produced by adding to the reaction mixture present as a melt, a stabilizing amount, e.g., 0.05-4 mol % based on the sum total of components A and B, of a compound of Formula (I) ##STR1## wherein Q is --O--; --S--; or N--R'";R" and R'" are: --H; C.sub.1 -C.sub.6 -alkyl; or phenyl, e.g., benzimidazole.

Abstract: An aromatic polyamide, e.g., from isophthalic acid and 4,4'-bis(4-aminophenoxy)diphenylsulfone, is produced with a sufficient amount, e.g., 0.05-4 mol%, of 4-phenoxypyridine to improve resistance to thermal oxidation.

Abstract: A thermoplastic molding composition comprising 70 to 98 parts of an aromatic polycarbonate having a viscosity number of from 40 to 100 cm.sup.3 /g and 2 to 30 parts of a polyoctenylene or a modified polyoctenylene.

Abstract: Aromatic polyamides having an improved resistance against thermal oxidation, are produced by utilizing monomers having a very high degree of purity, at least 99.90% by weight, preferably, at least 99.94%.

Abstract: A thermoplastic molding composition having good cold impact strength properties, consisting essentially of (I) a polyamide 1212 having a relative viscosity in the range of from 1.5 to 3.0, and (II) 2 to 25% by weight, based on the polyamide, of a plasticizer.

Abstract: The invention relates to thermoplastic compositions made up of:A. Polyphenylene ethers, in an amount of 15-95 wt. parts;B. Styrene resins, in an amount of 0 to 70 wt. parts;C. E-SBR rubbers, in an amount of 3-15 wt. parts;D. styrene-butadiene polymers prepared by emulsion polymerization (with Styrene incorporated in the copolymer in the amount og 3-15 wt. parts; andE. Optionally, other additives.The invention further relates to a method for preparing such thermoplastic compositions.

Abstract: A thermoplastic molding composition comprising 70 to 98 parts of an aromatic polycarbonate having a viscosity number of from 40 to 100 cm.sup.3 /g and 2 to 30 parts of a polyoctenylene or a modified polyoctenylene.

Abstract: Thermoplastic molding compounds which have high cold impact strength. The molding compounds are comprised of (i) a polyamide 1012 with a relative viscosity in the range of 1.5-3.0; and (ii) a plasticizer in the amount 2-25 wt. % based on the weight of the polyamide. The inventive molding compounds enable manufacture of molded pieces.

Abstract: A thermoplastic resin composition, which comprises (a) from 5 to 85 parts by weight of a melted or remelted preliminary molding compound consisting of from 60 to 98 parts by weight of polyphenylene ethers, 40 to 2 parts by weight of polyoctylenes, from 0.1 to 5 parts by weight of maleic anhydride and from 0.1 to 5 parts by weight of a further acid derivative which has a melting point below 100.degree. C. and which is selected from the group consisting of an unsaturated mono- or dicarboxylic acid having up to 14 carbon atoms, an anhydride thereof, which excludes maleic anhydride, and an ester of mono- or dicarboxylic acid with an alcohol of up to 6 carbon atoms; and (b) from 95 to 15 parts by weight of an aliphatic homopolyamide or a copolyamide containing a preponderant amount of aliphatic monomer units.

Abstract: The invention relates to thermoplastic compositions made up of:A. Polyphenylene ethers, in an amount of 15-95 wt. parts;B. Styrene resins, in an amount of 0 to 70 wt. parts;C. E-SBR rubbers, in an amount of 3-15 wt. parts;D. Styrene-butadiene polymers prepared by emulsion polymerization (with styrene incorporated in the copolymer in the amount of 3-15 wt. parts; andE. Optionally, other additives.The invention further relates to a method for preparing such thermoplastic compositions.

Abstract: The invention relates to thermoplastic molding compositions comprised of polyphenylene ethers, impact-resistant styrene polymers, and a pulverulent, filler-containing rubber; and further comprised of various additives. The present invention also relates to a method(s) for preparing such compositions. Preferably the pulverulent, filler-containing rubber is prepared from an E-SBR rubber (emulsion polymerized SBR rubber) produced according to German Pat. No. 2,822,148.

Abstract: The invention relates to thermoplastic compositions comprising mixtures of(A) 100 parts by wt. polyphenylene ethers;(B) 2-40 parts by wt. polyoctenylene; and(C) the following additives in amounts given as wt. % of the overall molding or forming composition:up to 50 wt. % reinforcing and filling materials;up to 60 wt. % condensation polymers;up to 15 wt. % flame retardants; andup to 5 wt. % other additives.The invention further relates to methods for producing such mixtures in the molten state and in solution.

Abstract: Thermoplastic compositions comprised of the following components:(A) Polyphenylene ether, in the amount of 20-90 parts by weight;(B) Styrene resins, in the amount of 5-70 parts by weight;(C) Polyoctenylenes, in the amount of 2-20 parts by weight;(D) Copolymers based on styrene and butadiene, in the amount of 0-20 parts by weight; and(E) Optionally, other additives;are disclosed.