Tinuvin 326, tinuvin 328, and tinuvin 1 are based on. Request pdf the combination effect of hindered amine light stabilizers with uv. Tinuvin carboprotect enables the use of clear coatings over cfrms so they may be designed as a structural element. Finally, uv 328 fulfils also the criteria to be classified as stotre 2 and therefore has to be considered as toxic. Studies with tinuvin 1 suggested an association between dosing time and effect. During this time, you may not be able to log into chemspider. Tinuvin 1577 was added into polyethylene terephthalate pet and it was found that addition of tinuvin 1577 effectively reduced the photodegradation of pet 30. Compared to uv absorbers, the effectiveness of hals, like tinuvin 770, is not dependent on the polymers thickness. Autoxidation may be initiated by heat, high energy radiation such as ultraviolet light, mechanical stress, or through reaction with other impurities. Tinuvin 5151 in terms of protection against uv light 19. It hardly absorbs visible light, especially suitable for colourless, transparent and lightcoloured products. Featuresbenefits tinuvin 329 protects polymers from uv radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.
Uv 328 is a highly effective light stabilizer for a variety of plastics and other organic substrates. It was designed to meet high performance and durability requirements of solventbased. Uv5411, tinuvin 329, cyasorb 5411, tinuvin 328, tinuvin 326. Featuresbenefits tinuvin 329 protects polymers from uv radiation, helping to preserve the original appearance and physical integrity of molded articles. High throughput analysis of polymer stabilizers with the. Detailed information is provided in the safety data sheet. Stabilization technologies llc charlotte, nc joe r webster ph. Product and company identification company 24 hour emergency response information basf corporation. Get instant access to tinuvin 328 technical datasheet. Features strong absorption of ultraviolet radiation in 300400 nm region. Uv 328 is an ultraviolet light absorber uva of the hydroxyphenylbenzotriazole class, which imparts outstanding light stability to plastics and other organic substrates. It has broad compatibility and can be easily dispersed.
Terms and definitions bathochromic shift is a change of spectral band position in the absorption, reflectance, transmittance, or emission spectrum of a molecule to a longer wavelength lower. In the course of evolution,it has developed the most sophisticated techniques for protecting the cells in plants and animals from ultraviolet rays. The effects of uv light on the chemical and mechanical. Characterization tinuvin p is an ultraviolet light absorber uva of the hydroxyphenyl benzotriazole class, imparting good light stability to a wide variety of polymers. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Uv absorber, tinuvin 1, on the epoxy properties were investigated. Pharos is a tool to help scientists, researchers, and product innovators identify problematic chemicals and collaborate to find safer alternatives. Uv292 is a liquid hindered amine light stabilizer hals especially developed for color sensitive coatings applications. Compatible with styrene homo and copolymers, acrylic polymers, unsaturated polyesters, polyvinylchloride, polyolefins, polyurethanes, polyacetals, polyvinyl butyral and elastomers. Technical datasheet supplied by basf hydroxyphenyl triazine hpt.
Ciba specialty chemicals ciba tinuvin 622 oligomeric hindered amine light stabilizer hals characterization tinuvin 622 is the light stabilizer of choice for all applications calling for low volatility and minimal migration, because of its oligomeric structure with high molecular weight. This dossier is one of four dossiers for the svhcidentification of several. The combination effect of hindered amine light stabilizers with uv. Bls 28 protects polymers as well as organic pigments from uv radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering. Uv 328 has a melting point of 8086 c, a vapor pressure of 4,610. Furthermore tinuvin 622 is effective as antioxidant.
Our portfolio contains two types of light stabilizers. Ultraviolet light absorbers uva and hinderedamine light stabilizers hals. Wash off immediately with plenty of water and soap. Used as an interactionfree uv absorber for high performance coatings, amine andor metalcatalyzed coating systems, coatings applied on basecoats or substrates containing such catalysts, coatings based on catalyzed acrylic or polyester resins and glycidyl. Chemspider is a free chemical structure database providing fast text and structure search access to over 67 million structures from hundreds of data sources.
It provides excellent light stability for thick sections but can also be used for articles with a high surface area such as films and tapes. Used in industrial, decorative, plastic, metal coatings, wood stains and varnishes, wood care products, general industrial paints, heavy duty maintenance and marine. Chemical name phenol, 22hbenzotriazol2yl4,6bis1,1dimethylpropyl cas number 25973551 chemical formula. Important n otice purchase of tinuvin 1 alone does not permit the use of tinuvin. Applications tinuvin 329 is an effective light stabilizer for a variety of plastics and other organic substrates. Its high thermal stability and permanence makes it suitable for coatings exposed to high bake temperatures and extreme environmental conditions.
Its characteristic broadband absorption provides efficient protection to coatings and light sensitive substrates. Annex xv identification of uv 328 as svhc 6 part i note. Technical datasheet supplied by basf blend of a hydrophilic 22hydroxyphenylbenzotriazole uv absorber uva and a basic hindered amine light stabilizer hals. It is a low molecular weight hindered amine light stabilizer hals for applications demanding particularly high light stability. We,china tinuvin 327 3864991 suppliers and china tinuvin 327 3864991 manufacturers, provide tinuvin 327 3864991 product and the products related with china tinuvin 327 3864991 bohanchem. We apologise for any inconvenience this might cause and thank you for your patience.
Please note the following points when using this template. Tinuvin 928 is uv absorber of the hydroxyphenyl benzotriazole class developed specially for high performance coating applications. Chemical name phenol, 22hbenzotriazol2yl4methyl cas number 2440224 chemical formula molecular weight 225 gmol applications tinuvin p provides ultraviolet protection in a wide variety of polymers includ. Inorganic uv absorbers often scatter light, while organic uv absorbers convert uv light to. Tinuvin performance additives for uv protection and durability are designed to protect and extend the lifetime of coatings. I process for adoption of the opinion in the mandate of 4 april 20 attached as annex 1, the executive director of echa requested the rac. When dams were treated during gestation days 615, minimal effects were noted. Characterization tinuvin 328 is an ultraviolet light absorber uva of the hydroxyphenyl benzotriazole class, which imparts outstanding light stability to plastics and other organic substrates. Page 1 of 2 general tinuvin 5151 is a liquid light stabilizer blend developed specifically for coatings. It helps to preserve the original appearance and physical integrity of molded articles, films, sheets and fibers during outdoor weathering. For safety data sheets of the catalysts division contact customer care or email your request to. Used for articles, films, sheets and fibers during outdoor weathering.
Rinse open eyes with plenty of water for at least 15 minutes. It belongs to hydroxyphenyl benzotriazole class, imparting good light stability to a wide variety of polymers. Overview bls 28 25973551 is a benzotriazole type ultraviolet light absorber uva, imparting good light stability for plastics and other organic polymers. It is a 22hbenzotriazol 2yl4, 6ditertpentylphenol grade, a highly effective light. Uv328 is a chemical compound that belongs to the benzotriazoles. The hmis system was designed to communicate workplace hazard information to employees who. Tinuvin 327 is suitable for polyolefin, polyvinyl chloride, polymethyl methacrylate, polyoxymethylene, polyurethane, and abs resin, especially suitable for polypropylene fiber. There will be scheduled maintenance work beginning on wednesday 26th february 2020 from 11.
C 30 h 56 n 2 o 4 and c 21 h 39 no 4 chemical structure. In case of irritation of respiratory system or mucous membranes, or if you feel unwell or in case of prolonged exposure, get medical attention. Benefit of using tinuvin 770 is the high lightstabilizing performance, particularly in pp thick sections to protect the surface. Because of its extended uv absorption, tinuvin 328 provides efficient protection to coatings and light sensitive substrates.
Reaction of benzotriazole ultraviolet light absorbers with free radicals. Tinuvin 765 is a highly effective liquid stabilizer used for a wide range of polymers and applications including polyurethanes, sealants, adhesives, elastomers, unsaturated polyesters, acrylics, vinyl polymers pvb, pvc, styrene homo and copolymers, polyolefins. Tinuvin 328 could effectively inhibit the formation of alkyl free radicals in pp. High throughput analysis of polymer stabilizers with the agilent 6420 triple quadrupole lcms abstract the capability of highly sensitive and rapid flow injection coupled to multiple reaction monitoring mass spectrometry for comprehensive analysis of several polymer stabilizers, belonging to quite different chemical classes, is demonstrated. It is a 22hbenzotriazol2yl4, 6ditertpentylphenol grade, a highly effective light. Exhibits high degree of photostability over long periods of light exposure.
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