Ciba-Geigy Corporation

Witco Vinyl Additives Gmbh

Ciba Specialty Chemicals Corporation

Chemtura Vinyl Additives, Gmbh

Crompton Gmbh

Crompton Vinyl Additives Gmbh

Galata Chemicals LLC

Hans-Helmut Friedrich

Hermann O Wirth

Wolfgang Wehner

Rolf Drewes

Jurgen Bussing

Kornelia Malzacher

Karl-Josef Kuhn

Hans-Ludwig Mehner

Helmut Linhart

Hans Joachim Lorenz

Thomas Hopfmann

Gerd Abeler

Rainer Schneider

Klaus Muller

Markus Kolb

Kay S Groninger

Walter Wecht

Bernd Braun

A stabilizer system for stabilizing halogen-containing polymers comprising a perchlorate salt and at least one indole compound, a composition comprising such a stabilizer system, process for stabilizing a chlorine-containing polymer using such a stabilizer system, and an article manufacture comprising PVC stabilized by such a stabilizer system.

Stabilizer system for stabilizing halogen-containing polymers

The invention relates to a process for preparing a stabilized suspension/emulsion polymer of halogen-containing monomers with addition of a polymer stabilizer mixture compatible with the polymerization medium prior to, during or directly after the polymerization process, and to the polymers prepared by this process.

Prestabilization of halogen-containing polymers

A composition and process is disclosed for the stabilization of halogen-containing polymers. In particular, chlorine-containing polymers such as poly vinyl chloride (PVC) are stabilized by incorporating of a stabilizer mixture having at least a perchlorate salt and an alkanolamine.

Disclosed are stabilizer mixtures comprising at least a) one alkanolamine or one reaction product of a monofunctional or polyfunctional epoxide and ammonia or a monofunctional or polyfunctional dialkyl(aryl)amine or monoalkyl(aryl)amine, and b) one uracil or one initial product and an optional perchlorate salt.

Stabilizer system for stabilizing PVC

The invention relates to stabilizer systems, containing at least: a) a perchlorate salt; b) at least one or more compounds from the group consisting of carbamides, indole derivatives and enamines of formula (I), wherein n=1 or 2 and X=O or NR; n=3&#x2013;6 and X=O; R=H, C&#x2013;C-alkyl, C&#x2013;C-alkenyl, C&#x2013;C-aryl, C&#x2013;C-alkaryl or C&#x2013;C-aralkyl; R(if n=1)=C&#x2013;C-alkyl, C&#x2013;C-alkenyl or aryl, preferably phenyl, optionally substituted with up to 3 hydroxy, C&#x2013;C-alkoxy or C&#x2013;C-alkyl; or R(if n=2&#x2013;6)=linear or branched C-alkylene, optionally interrupted by one or more O or S atoms, wherein R(if n=3) can also be a C&#x2013;C-alkyl trisubstituted isocyanurate; if X=NH Rcan also be H. Said stabilizer systems are suitable for stabilizing halogen-containing polymers, more particularly PVC.

Chlorate-containing stabilizer system with nitrogen-containing synergists for stabilizing halogen-containing polymers

A description is given of compositions comprising a chlorine-containing polymer and at least one compound of the general formula I

1,3-Disubstituted 6-aminouracils for stabilizing halogenated polymers

The invention relates to 4-aminopyrimidinediones and oxazolidino-4-aminopyrimidinediones of the formula I and II given below, a process for their preparation, their use for stabilizing halogen-containing polymers, and compositions composed of compounds of the formula I or II and of chlorine-containing polymers, in particular PVC.

4-aminopyrimidinones and oxazolidino-4-aminopyrimidinones, process for their preparation and their use for stabilizing halogen-containing polymers

Cyanoacetylureas for stabilizing halogenated polymers

Stabiliser combinations for chlorine-containing polymers

A description is given of compounds of the general formula I

NH2-modified 6-aminouracils as stabilizers for halogenated polymers

A description is given of compounds of the general formula I ##STR1## n is 1 or 2, Y is oxygen or sulfur and

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Lautertal, Germany

Hans-Helmut Friedrich