Ciba Specialty Chemicals Corporation

Basf Se Corporation

Michela Bonora

David G Leppard

François Gugumus

Dario Lazzari

Manuele Vitali

Massimiliano Sala

Paul Adriaan Van Der Schaaf

Vien V Toan

Mara Destro

Alessandro Zedda

Mirko Rossi

Gianluca Ferri

Anna Bassi

Roland A E Winter

Cesare Lorenzetti

Galileo Magnani

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

The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 &#x3bc;m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.

Transparent polymer articles of low thickness

The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005&#x2013;0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 &#x3bc;m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.

The instant invention relates to a thermoplastic polymer composition useful in greenhouse films to enhance plant growth or in general bio-mass production. Further aspects of the invention are a process for enhancing plant growth in greenhouses by incorporating a photoactive additive together with light stabilizers into the greenhouse film and the use of the condensation product of dialkylamino benzaldehyde and barbituric acid together with light stabilizers as a plant growth enhancing additive in polymeric greenhouse films.

Composition and process for enhancing bio-mass production in greenhouses

The present invention relates to highly compatible, high molecular weight hydroxyphenylbenzotriazole UV-absorbers and for their use in protecting plants in green houses and the protection of foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like from the deleterious effects of ultraviolet radiation. It has been found that certain highly compatible, high molecular weight hydroxyphenylbenzotriazole UV-absorbers are especially effective towards this end when incorporated in the containers or films in which such materials are stored.

High molecular weight hydroxyphenylbenzotriazole uv-absorbers for thin film applications

The invention relates to metathesis polymers wherein an aromatic group that has UV-light absorbing properties is attached with a bridge group to the polymer. Also disclosed is a polymerizable composition comprising a catalytically effective amount of a penta- or hexavalent ruthenium or osmium carbene catalyst, the process for preparing the metathesis polymer by applying the reaction conditions of Ring Opening Metathesis Polymerization (=ROMP) to the polymerizable composition; and various technical applications of the metathesis polymers.

Romp with oligomeric UV-absorbers

Dimeric light stabilizers for polyolefines and polyolefine copolymers

Polyolefin or polyolefin copolymer films for agricultural applications stabilized with a sterically hindered amine and a metal oxide or hydroxide selected from oxides of zinc, aluminum, calcium and magnesium, and hydroxides of zinc, aluminum and calcium, show improved light stability and pesticide resistance.

Polyolefin or olefin copolymer films having improved light stability and

Compositions comprising a synthetic organic polymer and, as stabilizer, a combination of

Growing community of inventors

Bologna, Italy

Michela Bonora