Huels Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Horst Heuer

Friedrich Georg Schmidt

Hans Jadamus

Gernot Horlbeck

Klaus Burzin

Christian Gerth

Hanns-Jorg Bax

Michael Droescher

Salih Mumcu

Jurgen Finke

Gunter Poll

Thomas Grosse-Puppendahl

Michael Droscher

A process for producing a composite article made of at least one hard component and at least one soft component, wherein the hard component contains a thermoplastic polyester containing non-aromatic C.dbd.C double bonds, and the soft component contains a vulcanizate, wherein the vulcanizate is produced by vulcanization of a rubber composition having the following components:

Process for producing composite article made of polyesters and elastomers

Polyester/elastomer composites are produced by vulcanizing a polyester which contains aliphatic double bonds in the presence of a vulcanizate comprising:

Process for the production of composite articles of polyesters and

Process for producing composite articles made of polyesters and elastomers. Composite articles made of a thermoplastic polyester and a vulcanizate are to be produced. These articles are obtained by producing the vulcanizate under conventional vulcanization conditions in contact with the hard component by vulcanization of a rubber composition which contains the following components: I. 100 parts by weight of a rubber, II. From 0 to 300 parts by weight of fillers, III. From 1 to 10 parts by weight of peroxidic vulcanization agents, IV. From 0 to 4 parts by weight of vulcanization activators and V. From 0 to 150 parts by weight of plasticizers, where a) the hard and/or the soft component, as desired, additionally contains from 0.5 to 12 parts by weight of a difunctional or polyfunctional maleimide and b) in the case of the hard component containing no difunctional or polyfunctional maleimide, the rubber possesses carboxyl or acid anhydride groups. A strong composite is obtained by this process.

Process for producing composite articles made of polyesters and

The invention describes a process for the production of a composite article of at least two component pieces, firmly bonded to one another, of a vulcanized rubber compound on the one hand and a polyamide composition on the other hand, the vulcanized rubber compound being prepared under customary vulcanization conditions in contact with the polyamide composition by vulcanization of a rubber compound which comprises the following components: I. 100 parts by weight of a rubber, II. 0 to 300 parts by weight of fillers, III. 0 to 150 parts by weight of plasticizer, IV. 1 to 10 parts by weight of peroxide vulcanization agent, V. 0 to 4 parts by weight of vulcanization activators and VI. 1 to 10 parts by weight of a silane containing double bonds.

Process for the production of a composite article of a polyamide and an

Aromatic polyamides with an improved stability toward thermal oxidation was achieved by polycondensation being performed in the presence of 0.05 to 4 mol % of a catalyst comprising a mixture of phosphorus compounds and metal salts. With the process according to the invention, it is possible to obtain aromatic polyamides stable toward thermal oxidation.

Melt production of a thermoplastically processible aromatic polyamide

Hydrolysis-resistant, thermoplastic molding compositions are made from high-molecular weight, linear polybutylene terephthalate and 0.1-10 mole %, based on the amount of the dicarboxylic acid component of the polyester, of a salt of Formula (A)

Hydrolysis-resistant thermoplastic molding composition comprising high

Improved molding compositions based on high-molecular polyether ester amides are obtained by heating at 180.degree.-250.degree. C. a melt containing a mixture of

Molding compositions based on high molecular weight polyether ester

Improved molding compositions based on high-molecular polyalkylene terephthalates are obtained by heating at 240.degree.-300.degree. C. a melt containing a mixture of

Molding compositions based on high molecular weight polyalkylene

A process for the post condensation of poly(alkylene terephthalate) in the solid phase is carried out in the presence of esters of phosphorous acid at 25.degree.-65.degree. C. below the melting point of the poly(alkylene terephthalate) while passing an inert gas stream through the reaction mixture.

Process for the condensation of poly(alkylene terephthalates)

A process for condensing a linear polyalkylene terephthalate having a viscosity number of at least 60 cc/g in two stages, at an elevated temperature, in the solid phase, and in the presence of an alkanediol, comprises, in a first stage, treating the polyalkylene terephthalate in an inert gas stream at a reaction temperature 30.degree.-80.degree. C. below its melting point, with 0.2-3.5% by weight, based on the weight of the polyalkylene terephthalate, of an alkanediol whose boiling point under normal pressure is 20.degree.-70.degree. C. above the reaction temperature, wherein the amount of inert gas passed through per hour, measured under standard conditions, corresponds to 0.3 to 2 times the gross reactor volume; and, in a second stage, condensing the polyalkylene terephthalate in an inert gas stream at a temperature 5.degree.-25.degree. C. below its melting point, wherein the amount of inert gas passed through per hour, measured under standard conditions, corresponds to 2.5 to 10 times the gross reactor volume.

Process for the condensation of linear polyalkylene terephthalates

A process for the regeneration and further condensation of a linear polyalkylene terephthalate, which is inactive due to recondensation treatment in the solid phase, and which has a viscosity number of at least 60 cc/g, the process being conducted in two stages, at an elevated temperature, in the presence of an alkanediol, comprises, in a first stage, treating the inactive polyalkylene terephthalate at a reaction temperature of 30.degree.-80.degree. C. below its melting point, with 0.3-3.5% by weight, based on the weight of the polyalkylene terephthalate, of an alkanediol whose boiling point under normal pressure is 20.degree.-70.degree. C. above the reaction temperature, in an inert gas stream, wherein the amount of inert gas passed through per hour, measured under standard conditions, corresponds to 0.3-2 times the gross reactor volume; and, in a second stage, condensing the polyalkylene terephthalate at a temperature of 5.degree.-25.degree. C. below its melting point in an inert gas stream, wherein the amount of inert gas passed through per hour, measured under standard conditions, corresponds to 2.5-10 times the gross reactor volume.

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Haltern, Germany

Horst Heuer