Ciba Specialty Chemicals Corporation

Basf Se Corporation

Basf Italia S.r.l.

Mirko Rossi

Dario Lazzari

Graziano Zagnoni

Stephen Mark Andrews

Alessandro Zedda

Valerio Borzatta

Walter Fischer

Hugh Stephen Laver

Manuele Vitali

Thomas Bolle

Adalbert Braig

Katharina Fritzsche

Mara Destro

Michela Bonora

Abdel-Ilah Basbas

Anna Bassi

Cesare Lorenzetti

Nazzareno Ruggeri

Giuseppe Veronesi

The present invention pertains to a reversibly thermochromic system comprising a substituted or an unsubstituted 6,11-dihydroxy-naphthacene-5,12-dione and a base and to a reversibly thermochromic composition comprising the reversibly thermochromic system and a carrier material and to novel substituted 6,11-dihydroxy-naphthacene-5,12-diones.

Reversibly thermochromic compositions

The present invention pertains to a reversible thermochromic system comprising a &#x3b2;-phenylvinylketone or a &#x3c9;-phenyl polyacetylenyl ketone with at least one acidic hydrogen and a base and to a reversible thermochromic composition comprising the reversible thermochromic system and a carrier material and to novel substituted &#x3b2;-phenylvinylketones or &#x3c9;-phenyl polyacetylenyl ketones with at least one acidic hydrogen.

Reversible thermochromic compositions

The invention relates to stabilized thermoplastic polymers, in particular polyolefin films. The stabilizing composition contains a tertiary amine with a molecular weight greater than 400 g/mol, a UV-absorber and/or a sterically hindered amine light stabilizer (HALS). Further aspects of the invention are a process for stabilizing thermoplastic polymers and the use of the above composition for stabilizing thermoplastic polymers.

Stabilizer composition for polymers

Piperazinone derivatives

The instant invention discloses a process for the preparation of compounds of the formula I:wherein the general symbols are as defined in claim, which process comprises reacting a compound of formula II:wherein the general symbols are as defined in claim, with a compound of the formula III:wherein Ris as defined in claim. The compounds of the formula II are new and useful as stabilizers for protecting organic materials, in particular synthetic polymers, reprographic materials or coating materials against oxidative, thermal or light-induced degradation.

Process for the preparation of morpholinones as light stabilizers

Oxopiperazinyl derivatives and light stabilized compositions

A compound of formula (I) wherein n is e.g. a number from 2 to 50; R &prime; and R &Prime; are e.g. a group of formula (II); G , G , G and G are e.g. C -C akyl; R is e.g. hydrogen or C -C alkyl; R is e.g. methylene; R &prime; is e.g. hydrogen and R &Prime; is e.g. hydrogen or C -C alkyl; R is e.g. C -C alkylene; and X is e.g. &mdash;N(R )R ) with R and R being independently of one another hydrogen or C -C alkyl, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.

Morpholinones as light stabilizers

The invention relates to new compounds containing 1-8 active groups of the type 3,3,6,6-polysubstituted 2-morpholinone and having the formula F

Growing community of inventors

San Lazzaro di Savena, Italy

Mirko Rossi