Huels Aktiengesellschaft

Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Evonik Operations Gmbh

Degussa-Huels Aktiengesellschaft

Hans Ries

Guido Schmitz

Hans Jadamus

Stefan Rober

Hans-Dieter Herrmann

Harald Haeger

Roland Feinauer

Joachim Mugge

Juergen Franosch

Horst Beyer

Rainer Goering

Jasmin Berger

Stefan Roeber

Michael Boer

Wilfried Bartz

Rainer Göring

Jürgen Franosch

Jurgen Franosch

Sylvia Monsheimer

Roland Wursche

Karl Kuhmann

Harald Häger

Michael Schlobohm

Hubertus Ohm

Hans-Peter Hauck

Frank Lorenz

Günter Brudny

Clemens Jacobs

Andreas Szentivanyi

Rainer Goring

The present invention is directed to continuous fiber-reinforced composites having a matrix of modified PVDF. The composite may be a semifinished product or a product or finished part manufactured therefrom. A product according to the invention is pelletized long-fiber material, while a finished part according to the invention is especially a thermoplastic composite pipe.

Composites having a thermoplastic matrix

A process for producing a thermoplastic composite pipe, where the process includes:

Thermoplastic composite pipe with multilayer intermediate lamina

A process for producing a thermoplastic composite pipe is provided. The thermoplastic composite pipe thus produced contains a liner, two or more composite layers composed of tape laminas, and a single- or multilayer intermediate lamina arranged between different composite layers. Composite formation between identical polymers in the process achieves improved adhesion. The thermoplastic composite pipe is especially suitable for offshore applications in oil or gas production.

A multilayer composite which has improved adhesion between the layers, with the following layers:

Multilayer composite having a polyester layer and a protective layer

A multilayer composite which comprises the following layers: I. an interior layer I selected from among a fluoropolymer molding composition and a polyolefin molding composition; II. a bonding agent layer II which has the following composition: a) from 0 to 80 parts by weight of a polyamine-polyamide graft copolymer, b) from 0 to 85 parts by weight of polyamide, c) from 0 to 85 parts by weight of a polymer selected from among fluoropolymers and polyolefins; with the sum of the parts by weight of a), b) and c) being 100; and, in addition, the sum of the components a) and b) comprising at least 20 parts by weight of monomer units derived from caprolactam and/or the combination hexamethylenediamine/adipic acid, hexamethylenediamine/suberic acid, hexamethylenediamine/sebacic acid, hexamethylenediamine/dodecanedioic acid, hexamethylenediamine/isophthalic acid or hexamethylenediamine/terephthalic acid and d) not more than 50 parts by weight of additives selected from among impact-modifying rubber and customary auxiliaries and additives; III. a layer III comprising an EVOH molding composition, has improved adhesion of the layers.

Multi-layer composite comprising an EVOH layer and a protective layer

A layered composite which includes the following layers (I) and (II), wherein layer (I) includes (a) from 0 to 80 part by weight of at least one particular polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one particular polyamide which is different from (a), wherein various monomer units are present in at least 20 parts by weight of the entirety of (a) and (b) and various other monomer units are present in at least 20 parts by weight of the entirety of (b) and (c); and layer (II) includes at least one ethylene-vinyl alcohol copolymer.

Composite having two or more layers, including an EVOH layer

A coolant line includes The coolant line has a high thermal aging resistance and bursting strength.

Coolant line

A layered composite contains the following layers: (I) a layer I composition containing (a) from 0 to 80 parts by weight of at least one polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one polyamide; and (II) a layer II composition containing at least one ethylene-vinyl alcohol copolymer.

A process for the bonding of a plastics pipe to another plastics part by ultrasound welding using sound waves which act longitudinally with respect to the pipe axis, while the arrangement of the areas to be welded is substantially parallel to the pipe axis. The welding procedure is combined with the forced insertion of the other plastics part into the plastics pipe in such a way that there is at least some overlap between the exposure to sound and the forced insertion.

Ultrasound welding of plastics components

Polyamide composite having two or more layers

Multilayer composites

A multilayer plastic pipe comprising at least three layers, which in turn comprise at least two different polymers, which are a polymer A (barrier layer polymer), which is a particularly good barrier against permeation of the medium to be carried through the pipes embedded in a polymer B (sheathing polymer) in the form of at least one layer which is interrupted at least once by a fillet of polymer B.

Multilayer plastic pipe having a segmented barrier layer

Multilayer composite having a barrier action

A multilayer plastic composition having (I) an outer layer of a thermoplastic molding composition and (II) an inner layer of an electrically conductive thermoplastic molding composition containing graphite fibrils, which are useful for the transport of (petro) chemical materials and also in the motor vehicle sector for conveying brake, cooling and hydraulic fluid and also fuel.

Multilayer plastic composition having an electrically conductive inner layer

Growing community of inventors

Marl, Germany

Hans Ries