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| CYASORB UV-3638 Basic information |
| Product Name: | CYASORB UV-3638 | | Synonyms: | 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE 18600-59-4 UV-3638;18600-59-4 UV-3638 2,2'-Benzene-1,4-diylbis(4H-3,1-benzoxazin-4-one);Cyasorb UV-3638 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;2-[4-(4-oxo-3,1-benzoxazin-2-yl)phenyl]-3,1-benzoxazin-4-one;1-Benzoxazin-4-one,2,2’-(1,4-phenylene)bis-4H-3;2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;2,2′-(p-Phenylen)di-3,1-benzoxazin | | CAS: | 18600-59-4 | | MF: | C22H12N2O4 | | MW: | 368.34 | | EINECS: | 418-280-1 | | Product Categories: | | Mol File: | 18600-59-4.mol |
| CYASORB UV-3638 Chemical Properties |
| CYASORB UV-3638 Usage And Synthesis |
| 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. |
| CYASORB UV-3638 Preparation Products And Raw materials |
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