73936-91-1 Usage
Description
2-(2H-Benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol, also known as UV absorber-928, is a hydroxyphenyl benzotriazole UV absorber specifically designed for high-performance coating applications. It offers efficiency to coatings and light-sensitive substrates due to its characteristic broad band absorption. With excellent solubility and high thermal and environmental performance, UV absorber-928 is particularly suitable for coatings exposed to high-temperature curing processes, such as powder and coil coatings, or high environmental stress.
Uses
Used in High-Performance Coatings:
UV absorber-928 is used as a UV stabilizer in high-performance coatings to protect against harmful UV radiation, which can cause degradation and discoloration of the coating. Its broad absorption properties effectively safeguard coatings and other photosensitive materials.
Used in Powder Coating:
UV absorber-928 is used as a UV stabilizer in powder coatings, which are widely used in various industries due to their environmental friendliness and excellent durability. The high solubility and temperature resistance of UV absorber-928 make it particularly suitable for this application.
Used in Industrial and Automotive Coatings:
UV absorber-928 is used as a UV stabilizer in industrial and automotive coatings to provide long-lasting protection against UV-induced degradation and discoloration. Its high environmental durability ensures that the coatings maintain their appearance and performance over time.
Enhanced with HALS Stabilizers:
The performance of UV absorber-928 can be further enhanced when used in combination with a Hindered Amine Light Stabilizer (HALS) stabilizer, such as UV-292 or UV-123. This combination provides superior protection against UV-induced degradation, ensuring the longevity and appearance of the coatings.
Flammability and Explosibility
Notclassified
Synthesis
In a dry argon atmosphere 0.150 g of oxime 5, 0.070 g of 1,2-phenylene diamine 1 and 0.150
ml triethyl-borate are dissolved in 4 ml dry THF and heated for 24 h at 60°C. After a TLC
shows consumption of starting oxime the mixture is evaporated to dryness and the resulting
residue purified by column chromatography (eluent: hexane - ethyl acetate: 10-1 vol/vol) to
give 0.171 g (92 %) of the diazo-amine intermediate 6.
Replacing the B(OEt)3 by 2.5 g of basic AI2O3 and the THF by 2 ml of xylene and heating this
mixture to 140°C for 48 h gives after the usual work-up 0.089 mg of diazo compound 6 and
0.300 g of starting oxime 5.
According the procedure given for the preparation of compound 4 in example 1, triazole 7 is
obtained from 0.007 g (0.016 mmol) of intermediate amine 6 and 0.020 g (0.122 mmol) CuSO4
in 100% (0.007 g). In this comparative example, 7.73 equivalents of copper salt are used.
Check Digit Verification of cas no
The CAS Registry Mumber 73936-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,3 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 73936-91:
(7*7)+(6*3)+(5*9)+(4*3)+(3*6)+(2*9)+(1*1)=161
161 % 10 = 1
So 73936-91-1 is a valid CAS Registry Number.
InChI:InChI=1/C29H35N3O/c1-27(2,3)19-28(4,5)21-17-22(29(6,7)20-13-9-8-10-14-20)26(33)25(18-21)32-30-23-15-11-12-16-24(23)31-32/h8-18,33H,19H2,1-7H3
73936-91-1Relevant articles and documents
NOVEL PROCEDURE FOR THE FORMATION OF 2H-BENZOTRIAZOLE BODIES AND CONGENERS
-
, (2020/07/05)
The present invention relates to a process for the preparation of 2H-benzotriazole compounds and congeners, novel 2H-benzotriazole compounds and congeners and their use as UV absorbers in coatings and bulk plastics.
Body-care and household products and compositions comprising specific sulfur-containing compounds
-
, (2009/04/24)
Disclosed are stabilized body care products, household products, textiles and fabrics which comprise specific sulfur containing compounds. Dyed products and articles are effectively stabilized against color degradation. The products are for example skin-care products, hair-care products, dentifrices, cosmetics, laundry detergents and fabric softeners, non-detergent based fabric care products, household cleaners and textile-care products.
Process for the preparation of benzotriazoles
-
Page 10, (2010/02/05)
A process for the preparation of compounds of formula (I): wherein the general symbols are as defined in claim 1, which comprises reacting a compound of formula (V): wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R18 are as defined in claim 1, and R18 is especially nitro, chlorine or bromine, with an azide compound of formula (IX): wherein M and n are as defined in claim 1, especially with sodium azide.