Ciba Specialty Chemicals Corporation

Ciba-geigy Corporation

Andrea R Smith

Mervin Gale Wood

Deborah DeHessa

Ramanathan Ravichandran

Stephen D Pastor

Joseph Suhadolnik

James L Hyun

Luther A R Hall

Kevin Trainor

James Peter Galbo

Stephen Mark Andrews

Douglas Wayne Horsey

Anunay Gupta

Sai Ping Shum

Peter Solera

Jacqueline Lau

Joseph Stephen Puglisi

Walid Al-Akhdar

Carmen Hendricks-Guy

Mark Mc Cusker

Kurt M Bessonen

Deborah Judd

Mark McCusker

Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula A wherein at least one of G, Ror Rcontains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading when incorporated therein alone or in combination with an antioxidant.

Benzotriazole/HALS molecular combinations and compositions stabilized therewith

Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.

Bloom-resistant benzotriazole UV absorbers and compositions stabilized therewith

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of a triazine-based piperazinone stabilizer in combination with a UV absorber and/or an antioxidant.

Candle wax stabilized with piperazinones

Hindered amine compounds which are substituted by a long hydrocarbon chain are useful in a number of applications where the solubility or compatibility afforded by said substitution is needed. This is seen particularly for example with white, dyed, dipped, unscented and/or scented candle wax which is effectively stabilized against discoloration and fading by the incorporation therein of a long chain hindered amine alone or in combination with a UV absorber and/or an antioxidant.

Long chain hindered amines and compositions stabilized therewith

Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula Awherein at least one of G, Ror Rcontains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading when incorporated therein alone or in combination with an antioxidant.

Benzotriazole/hals molecular combinations and compositions stabilized therewith

Hindered amine compounds which are substituted by a long hydrocarbon chain are useful in a number of applications where the solubility or compatibility afforded by said substitution is needed. This is seen particularly for example with white, dyed, dipped, unscented and/or scanted candle wax which is effectively stabilized against discoloration and fading by the incorporation therein of a long chain hindered amine alone or in combination with a UV absorber and/or an antioxidant.

Dyes and pigments present in candle wax compositions are particularly well stabilized against color fade or color change by a combination of a UV absorber and a metal compound, particularly a tin compound. The further addition of a hindered amine or antioxidant is highly beneficial.

Candle wax compositions stabilized with UV absorber-metal combinations

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of a piperazindione in combination with a UV absorber and/or an antioxidant.

Candle wax stabilized with piperazindiones

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of an s-triazine UV absorber plus a classic hindered amine and/or an antioxidant.

Candle wax stabilized with s-triazines/hals

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of an imidazolidine in combination with a UV absorber and/or an antioxidant.

Candle wax stabilized with imidazolidines

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of a morpholinone in combination with a UV absorber and/or an antioxidant.

Candle wax stabilized with morpholinones

White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of a piperazinone in combination with a UV absorber and/or an antioxidant.

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Wingdale, NY, United States of America

Andrea R Smith