Bayer Aktiengesellschaft

Other

Hans-Detlef Heinz

Burkhard Kohler

Rolf-Volker Meyer

Klaus Reinking

Rolf Dhein

Harald Pielartzik

Ralf Dujardin

Friedrich Fahnler

Joachim Doring

Martin Wandel

Peter-Rolf Muller

Hans-Joachim Traenckner

Aziz El-Sayed

Wolfgang Russeler

Helmut Schulte

Aziz E Sayed

Walter Schmitt

Alexa Sommer

Hans-Josef Buysch

Dieter Freitag

Friedrich Jonas

Karsten-Josef Idel

Claus H Wulff

Klaus Horn

Uwe Westeppe

Hanns-Peter Muller

Walter Uerdingen

Siegfried Korte

Werner Nielinger

Heinrich Schrage

Klaus Kraft

Bahman Sarabi

Gunter Arend

Peter-Roger Nyssen

Wolfgang Wehnert

Werner Kloker

Harald Selbeck

Eduard Hansel

Michael Dietrich

William C Bushong

Heinz Bonten

Franz Zimmerman

Sabine Dorf

This invention relates to thermoplastic moulding compounds based on polyamides and/or polyesters and special functionally modified polyarylene sulphides and optionally conventional additives and to their preparation and their use.

Thermoplastic moulding compounds

The invention relates to lactam mixtures which give lactam melts having increased viscosity, to their production and to their use, preferably in the activated anionic polymerization of lactams (to cast polyamides). According to the invention, certain unsaturated aromatic vinyl compound/diene block copolymers (B) which dissolve in the lactam melt are added to the lactam (melt)s (A) in quantities of 1 to 15% by weight, a component (C) which is compatible with the diene block copolymers (B) and which dissolves completely or partly in the lactam melt optionally being added as an additional component. The block copolymers (B) used contain 10 to 85% by weight aromatic vinyl units and 15 to 90% by weight diene units. The block copolymers (B) may even be partly hydrogenated, epoxidized or grafted. The preferred lactam is .epsilon.-caprolactam. Lactam melts of increased viscosity are particularly suitable for taking up reinforcing materials and fillers (D) and for the production of filled cast polyamides. The invention also relates to the use of lactam melts thus thickened, more particularly lactam melts containing fillers/reinforcing materials, in a process for the production of polyamides and also to corresponding polyamide moldings, more particularly by the anionically activated casting process.

Lactam melts having increased viscosity and their use

This invention relates to a process for the preparation of particulate, high molecular weight polyamides, to the particulate, high molecular weight polyamides prepared by this process, to the use of these polyamides for the production of moulded bodies, especially by extrusion or blow moulding, and to the articles produced from the polyamides according to the invention. The process is characterized in that polyamides are mixed with concentrates of certain compounds containing phosphorus and worked up into granulates and these granulates are converted into high molecular weight products by solid phase after-condensation.

Process for the preparation of high molecular weight polyamides

This invention relates to polyarylene sulphides (PAS), preferably polyphenylene sulphides (PPS), which are modified with carboxyl groups or dicarboxylic acid anhydride groups.

Acid modified polyarylene sulphide

The invention relates to mixtures of polyarylene sulfides, crosslinking agents containing nitro groups, and optionally, mineral fillers and to the moldings obtainable from these mixtures.

Mixtures of polyarylene sulfides, crosslinking agents containing nitro

This invention relates to polyarylene sulphides (PAS) containing certain nitro compounds with reduced flash formation.

PAS with reduced flash formation and good mechanical properties

This invention relates to new highly fluid polyarylene sulphide-(PAS)-moulding compounds, preferably polyphenylene sulphide-(PPS)-moulding compounds containing low molecular weight, liquid crystalline ester(amide)s.

Highly fluid polyarylene sulphide moulding compounds

The invention relates to blends of polyarylene sulfides, phenolic resin nitroarylates, glass fibers and optionally other fillers (additives). The blends are distinguished by good mechanical properties.

Blends of polyarylene sulfides, phenolic resin nitroarylates, glass

The invention relates to free-flowing polyamide molding compounds which are characterized by a content of new liquid-crystalline compounds corresponding to general formulae (I) and/or (II) and to the new liquid-crystalline compounds corresponding to general formulae (I) and/or (II).

Free-flowing polyamide molding compounds

This invention relates to mixtures of polyarylene sulphides, nitroarylmethylidene ketones, glass fibers and optionally other fillers. The mixtures are distinguished by good mechanical properties.

Mixtures of polyarylene sulphides, nitroarylmethylidene ketones, glass

A polymeric molding compositon based on aliphatic polyamides contains as additives polyarylene sulfides and polyphenolic compounds free from tertiary alkyl group ortho to the phenolic-OH groups is useful in producing molded articles such as films, fibers and shaped objects.

Polyamide molding compounds

The invention relates to thermoplastic molding compounds based on polyamides and bisphenols having glass temperatures equal to or above those of the polyamides used, the bisphenols corresponding to the following formula ##STR1## The invention also relates to a process for their production and to their use for the production of moldings, films, fibers and other articles.

Polyamide molding compounds containing bisphenols of high glass

This invention relates to amorphous, flexible elastomeric polyamides based on dimer fatty acids and special disecondary diamines which have a glass transition temperature below 10.degree. C., to the production of these elastomeric polyamides and to their use as rubbers, plasticizers and, in particular, high-impact modifiers for thermoplastics or as flexible segments for the synthesis of thermoplastic elastomers and as additives for other purposes.

Flexible polyamide from dimer acid and bis-secondary diamine

The invention relates to a process for the preparation of polyamide moulding compositions containing 0.1 to 40 wt. % of a polyarylene sulphide by reaction of polyamide-forming components in the presence of polyarylene sulphides.

Polyamide moulding compositions containing finely divided polyarylene

The invention relates to new, free-flowing polyamide molding compounds and blends, characterized in that they are prepared by mixing of polyamides known per se in the melt with low molecular weight, liquid-crystalline esters and/or ester amides corresponding to formula (I) and/or liquid-crystalline, oligomeric esters and/or ester amides corresponding to formula (II) and, optionally, other additives, at least one polymeric blending component being used as a further additive in the case of polyamide blends, and to the use of these liquid-crystalline (LC) additives I and/or II as flow promoters in polyamide molding compounds and blends and to a process for the production of the new polyamide molding compounds and blends. The invention also relates to the new oligomeric esters and/or ester amides corresponding to formula (II).

Free-flowing polyamide molding compounds and blends

Growing community of inventors

Krefeld, Germany

Hans-Detlef Heinz