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Additives
有个小姑娘Polymer Additives
Ciba ® TINUVIN ®
312
Oxanilide UV absorber Characterization TINUVIN 312 is an ultraviolet light absorber of the oxanilide class, which imparts
outstanding light stability to plastics and other organic substrates. Particularly it is recommend for rigid and flexible PVC and polyesters.Chemical Name
Ethanediamide, N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)-CAS Number
23949-66-8
Structure N N
文化心理
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C 2H 52H 5H
Molecular weight 312 g/mol Applications TINUVIN 312 is a highly effective light stabilizer for a variety of plastics and other organic人物作文素材
substrates including unsaturated polyesters, PVC and PVC plastisol.
Other substrates where TINUVIN 312 brings a good efficiency are polyurethanes,
polyamides, polymethylmethacrylate, polybutyleneterephtalat, polycarbonates and cellulo
ester.
Features/ Benefits TINUVIN 312 features strong UV absorption, excellent compatibility in a wide variety of
substrates, and low volatility. It protects polymers as well as organic pigments from UV
radiation, helping to prerve the original appearance and physical integrity of molded
articles, films, sheets, and fibers during outdoor weathering. Beneath the performance as
light stabilizer, veral advantages can be encountered with TINUVIN 312:
n It is a white product, color and transparency are therefore not changed
n It is low volatile and thermally stable.
n It prents an excellent chemical resistance and is not reactive with alcalines.
n It brings additional thermal stability in polyamides.
n It absorbs at low wavelengths, it can be combined with optical brighteners.
Product Forms
Code:
Appearance:TINUVIN 312 white crystalline powder Guidelines for u The u levels of TINUVIN 312 range between 0.10 and 1.0%, depending on substrate and
performance requirements of the final application. The product can be ud alone or in
combination with other additives such as light stabilizers (hindered amines), antioxidants
登山游戏(hindered phenols, phosphites, thiosynergists, hydroxylamines, lactones), and other
functional stabilizers. Performance data of TINUVIN 312 alone or in combination with other
additives are available in many of the substrates listed above. TINUVIN 312 is inactive with趣味英语课堂
cobalt derivatives, catalyst for cold curing of unsaturated polyesters, so it can be ud
efficiently.
Physical Properties
Melting Range124-127°C
Specific Gravity (20°C) 1.26 g/ml
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Vapor Pressure (20°C) 5.5E-8 Pa
Boiling point/range> 400°C
pH-value 5.4
Solubility (20°C)% w/w
Water< 0.01
Acetone4
Benzene7
Chloroform20
Toluene 5.5
Ethanol0.3
n-Hexane0.2
Methanol0.4
Methylene chloride18
Volatility (of pure substance; heating rate 20°C/min. in air)
Weight loss (%)Temperature (°C)
1.0200
2.0215
5.0235
月经少怎么调理
Absorption Spectrum (10 mg/l, Chloroform)
1
0.8
0.6
0.4
0.2
250300350400450500
Wavelength (nm)
TINUVIN 312 exhibits strong absorbance in the 250-350 nm region and no absorption in
the visible region (> 400 nm) of the spectrum. The absorption maximum is at 305 nm in
chloroform solution.
Handling & Safety In accordance with good industrial practice, handle with care and prevent contamination of the environment. Avoid dust formation and ignition sources. For more detailed information
plea refer to the material safety data sheet.
Registration TINUVIN 312 is listed on the following Inventories:
Australia: AICS Canada: DSL China: First Import
Europe: EINECS Japan: MITI Korea: ECL
USA: TSCA
IMPORTANT: The following supercedes Buyer’s documents. SELLER MAKES NO REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, INCLUDING OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. No statements herein are to be construed as inducements to infringe any relevant patent. Under no circumstances shall Seller be liable for incidental, conquential or indirect damages for alleged negligence, breach of warranty, strict liability, tort or contract arising in connection with the product(s). Buyer’s sole remedy and Seller’s sole liability for any claims shall be Buyer’s purcha price. Data and results are bad on controlled or lab work and must be confirmed by Buyer by testing for its intended conditions of u. The product(s) has not been tested for, and is therefore not recommended for, us for which prolonged contact with mucous membranes, abraded skin, or blood is intended; or for us for which implantation within the human body is intended.
