18600-59-4

Basic information

• Product Name: 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE
• Synonyms: 1-Benzoxazin-4-one,2,2’-(1,4-phenylene)bis-4H-3;2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;UV-3638;2,2′-(p-Phenylen)di-3,1-benzoxazin;2,2''-P-PHENYLENEBIS-4H-3,1-BENZOXAZIN-4-ONE;2,2-(1,4-phenylene)bis((4H-3,1-benzoxazine-4-one);2,2'-Benzene-1,4-diylbis(4H-3,1-benzoxazin-4-one);Cyasorb UV-3638
• CAS NO: 18600-59-4
• Molecular Formula: C₂₂H₁₂N₂O₄
• Molecular Weight: 368.34
• EINECS: 418-280-1
• Mol File: 18600-59-4.mol
• Article Data: 5

Chemical Properties

• Melting Point: 315-317 °C
• Boiling Point: 522.8 °C at 760 mmHg
• Flash Point: 224.1 °C
• Appearance: off-white to light yellow crystalline powder
• Density: 1.41 g/cm³
• Vapor Pressure: 5E-11mmHg at 25°C
• Refractive Index: 1.708
• Storage Temp.: 2-8°C
• PKA: 1.98±0.20(Predicted)
• Water Solubility: 112μg/L at 20℃
• CAS DataBase Reference: 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE(18600-59-4)
• EPA Substance Registry System: 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE(18600-59-4)

Safety Data

• Hazard Codes: Xi
• Statements: 43-53
• Safety Statements: 24-37-61
• Hazardous Substances Data: 18600-59-4(Hazardous Substances Data)

Usage

Description

CYASORB UV-3638 is a highly efficient and non-staining UV absorber, which is distinguishied by its superiorly low volatility, and its strong & broad range of UV light absorption together with no color contribution & excellent stabilization for polymers. White UV-3638 is designed to meet the demanding high temperature requirements for processing engineering plastics such as Nylon, PC,PET,PBT and PPO. UV-3638 is also highly effective in other poymers such as polyamides, polyacetals, polyolefins fibers, styrenics, elastomers where long term permanet UV light stability is required.

Chemical Properties

white to off-white crystalline powder.

Uses

Cyasorb 3638 offers very strong and broad UV absorption with no color contribution. Possesses very good stabilization for polyesters(PET) and polycarbonates(PC).3638 is based on a benzoxaxinone structure which delivers a short-term heat stability up to 350 °C and a long term heat stability up to 160 °C.UV 3638 is ideal for film/sheet/plate applications such as solar cell, window film, etc.

Application

UV-3638 can be readily incorporated in the polymers within the dosage range of 0.1-10% by weight through conventional techniquire such as powder, solution, or melt blending(e.g. extrusion compounding). It can be used alone or in a variety of blends and combinations with antioxidants, phosphites and other light stabilizers where often a synergistic performance is observed. Basically, the dosage level for UV-3638 can be expectd to be 1/3 of the exsited benzotriazole type UV absorbers with the nearly same efficency of UV screenning.Engineering plastics (Nylone/plycarbonate/PET/PBT/PPO/PPS..etc)Because of it's superior heat resistance, so its volatility is extremely low during the processing of engineering plastics at temperatures above 300°C. Also, it offering a very strong & broad UV absorption with no color contribution and exllent stabilzation. so it will allow the recycling or reworking of scrap without significant lowss of the UV light stability. UV-3638 meets the stringent requirement of applications where light transmission and optical properties are critical.Other polymersBecause of its high absorptivity in the range of 300-360nm, plus its extremely low volatility, assures maximal resistance to UV light degradation even during long term indoor and out door exposure.

InChI:InChI=1/C22H12N2O4/c25-21-15-5-1-3-7-17(15)23-19(27-21)13-9-11-14(12-10-13)20-24-18-8-4-2-6-16(18)22(26)28-20/h1-12H

Upstream product

• 68191-39-9 N,N'-Terephthaloyl-bis-(2-amino-benzoesaeure-methylester) 
• 3980-13-0 N,N'-bis(o-carboxyphenyl)terephthalamide 
• 490-74-4 N-carboxy-anthranilic acid 
• 118-48-9 isatoic anhydride 
• 100-20-9 terephthaloyl chloride 
• 100-21-0 terephthalic acid 
• 118-92-3 anthranilic acid 

Downstream Products

• 3980-13-0 N,N'-bis(o-carboxyphenyl)terephthalamide 

Relevant articles and documents

Preparation method for bisbenzoxazinone ultraviolet absorber

The invention discloses a preparation method for a bisbenzoxazinone ultraviolet absorber. The preparation method comprises the following steps: (1) reacting terephthalic acid with methyl anthranilatein the presence of a catalyst and an inert solvent to obtain a methyl bisamide ester intermediate; and (2) subjecting the methyl bisamide ester intermediate to heating, reflux and ring closure in thionyl chloride to obtain the bisbenzoxazinone ultraviolet absorber. The preparation method of the invention adopts borate as a catalyst and eliminates an inorganic alkali reagent through dehydration amidation so as to eliminate metal ion residues from the source; the results of metal ion residue analysis show that the residues of common metal ions such as sodium, potassium, iron, chromium and aluminum are all 50 ppm or below; so the use of post-treatment reclaimed water is significantly reduced, by-produced inorganic salts and salty wastewater are eliminated, and the generation and discharge ofwaste water, waste gas and industrial residues are reduced.

BIS-BENZOXAZINONE COMPOUND

It is an object of the present invention to provide a bisbenzoxazinone compound which does not substantially contain an alkali metal salt, has high purity and provides a resin composition having excellent resistance to hydrolysis when it is contained in a resin, a production method thereof, and a resin composition comprising the compound. The present invention is a bisbenzoxazinone compound represented by the following formula (4): (R1 and R2 are each independently a hydrogen atom, hydroxyl group, alkyl group having 1 to 3 carbon atoms, or the like), and has (i) a purity of 98 % or more, (ii) a content of a compound represented by the following formula (7) of less than 0.15 wt%: (iii) a maximum peak in the measurement of the light reflectance at a visible range of its powder at 380 to 480 nm and a maximum light reflectance of 100 to 120 %, (iv) a metal sodium content of less than 50 ppm and (v) a YI value of -10 to 10.

Ultraviolet ray-absorbing cosmetic composition

The cosmetic composition of this is an ultraviolet ray-absorbing cosmetic composition containing particles of cyclic imino ester which is excellent in ultraviolet ray absorbability, stable against water, sparingly soluble in organic solvents, fats and oils, sebum, etc., and further has only a low skin-irritating property. When this cosmetic composition is applied onto the skin, erythema is not formed on/in the skin even if it is exposed to sunlight for a long period, and further aging of the skin can be prevented.