CAS: 2440-22-4; 2-(2-Hydroxy-5-Methylphenyl)Benzotriazole

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1,4-二苯基-1,3丁二烯 以 乙醇 用作溶剂,化学反应生成紫外线吸收剂 Uv-P
参考文献:玻璃基质中的单光子和双光子光化学
标题:玻璃基质中的单光子和双光子光化学
摘要:摘要 硬质玻璃溶剂基质中的光化学结果与气体基质中的结果不同.它是在 83,77 和 >=10 K 下通过连续照射和脉冲多 Mw Cm-2 峰值强度激发对那些不进行单光子反应的系统进行的.高度结构化的矩阵谱应作为解释瞬态谱的基础以避免歧义.许多 [2.2] 对环芳烷被光解.除了荧光和磷光外,它们中的大多数还提供稳定的双自由基和醌二甲烷光谱.一些苄基双自由基在其光化学生成后会发生化学发光.基质分离光谱与鳞翅目案例中的常见解释不同.取代的环己烯在 83 K 下的 [2+4]-光环逆转导致二烯立体异构体/旋转异构体在进一步照射时发生异构化.E/z-光平衡在 Mthf 基质中从两侧与 ω-硝基苯乙烯和 α-亚苄基-γ-丁内酯在 83 K 下获得,后者的立体异构化也在 10 K 下成功研究. 技术光稳定剂在 10 K 下的脉冲照射导致通过连续激发无法看到的质子迁移形成稳定的两性离子.分子间和分子内供体受体系统在
Doi:10.1016/j.Molstruc.2005.10.030

专利信息

专利号:US-2009318592-A1
优先权日:2005-10-11
标 题 :Process for the Synthesis of Amine Ethers
发明人：FREY MARKUS; BROENNIMANN VALERIE
权利人:CIBA GEIGY CORP
摘要:The present invention relates to novel processes for the preparation of a sterically hindered amine ether by reacting a corresponding sterically hindered amine oxide with a ketone or an aldehyde with at least one reactive H in the presence of a peroxydisulphate. Products obtained by this process may be hydrogenated. The compounds made by these processes are particularly effective in the stabilization of polymer compositions against harmful effects of light, oxygen and/or heat and as flame-retardants for polymers.

专利号:US-2007191516-A1
优先权日:2004-03-15
标题 :Process for the synthesis of amine ethers
发明人：FREY MARKUS; RAST VALERIE; BRAIG ADALBERT; KRAMER ANDREAS
权利人:FREY MARKUS; RAST VALERIE; BRAIG ADALBERT; KRAMER ANDREAS
摘要:A process for the preparation of a sterically hindered amine ether which comprises reacting a corresponding sterically hindered aminoxide with a C 5 -C 18 alk-1-ene in the presence of an organic hydroperoxide and optionally hydrogenating the resulting product as well as the product mixtures obtained therewith and their use as stabilizers and flame retardants.

专利号:US-7402675-B2
优先权日:2000-05-26
标题 :Process for the synthesis of amine ethers from secondary amino oxides
发明人：HAFNER ANDREAS; KIRNER HANS JUERG; SCHWARZENBACH FRANZ; VAN DER SCHAAF PAUL ADRIAAN; NESVADBA PETER
权利人:CIBA SC HOLDING AG
摘要:An amine ether of formula A n nwherein a is 1 or 2; and when a is 1, E is E′; when a is 2, E is L;n E′ is C 1 -C 36 alkyl; C 3 -C 18 alkenyl; C 2 -C 18 alkinyl; C 5 -C 18 cycloalkyl; C 5 -C 18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C 2 -C 7 alkyl or C 3 -C 7 alkenyl substituted by halogen; C 7 -C 15 aralkyl or C 7 -C 15 aralkyl substituted by C 1 -C 4 alkyl or phenyl; or E′ is a radical of formula (VII) as explained in claim 1; T′ is tertiary C 4 -C 18 alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR 21 or C(O)—R 22 ; or T′ is C 5 -C 12 cycloalkyl; C 5 -C 12 cycloalkyl which is interrupted by at least one O or —NR 18 —; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR 18 —; or T′ is —C(G 1 )(G 2 )-T″; or C 1 -C 18 alkyl or C 5 -C 12 cycloalkyl substituted by n n n n n n n n n n n n T″ is hydrogen, halogen, NO 2 , cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; n or T″ and T′ together form a divalent organic linking group completing, together with the hindered amine nitrogen atom and the quaternary carbon atom substituted by G 1 and G 2 , an optionally substituted five- or six-membered ring structure; and all other residues are as defined in claim 1, n are obtained in good yield from the corresponding N-oxyl hindered amine precursor by reaction with a hydrocarbon E 1 -H or H-L-H in the presence of an organic hydroperoxide and a catalytic amount of copper or a copper compound. n n n n n The products of present process find utility as polymerization regulators and/or light stabilizers for organic material.

专利号:US-6559311-B1
优先权日:2001-10-30
标题 :Process for the synthesis of a photo-stabilizer
发明人：DESAI SHROJ AL MOHITKUMAR; SINGH RAJ PAL
权利人:COUNCIL SCIENT IND RES
摘要:The present invention relates to a process for the preparation of a photo-stabilizer of the general formula (I): n wherein R 1 is hydrogen, halogen, C 1 to C 12 alkyl, alkoxy (linear and branched), R 2 is hydrogen, C 1 -C 8 alkyl, cyclopentyl, cyclohexyl or cumyl, R 3 is hydrogen, C 1 -C 4 alkyl, R 4 is methyl or ethyl, R 5 is C 1 -C 8 alkyl, alkyl phenyl, alkoxy, acyl, cycloalkyl and allyl, X is O, NH, C 1 -C 8 alkyloxy and alkylamino (linear or branched), and derivatives and intermediates thereof.

专利号:WO-2012163936-A1
优先权日:2011-05-31
标 题 :Process for the synthesis of benzotriazoles useful as uv-filters
发明人：PRESCHEL MICHAEL; ROEDER MICHAEL; SCHLIFKE-POSCHALKO ALEXANDER; ZHANG KESHENG
权利人:DSM IP ASSETS BV; PRESCHEL MICHAEL; ROEDER MICHAEL; SCHLIFKE-POSCHALKO ALEXANDER; ZHANG KESHENG
摘要:The invention relates to an improved process for the manufacture of novel benzotriazoles as well to novel benzotriazoles obtained by the novel process. This novel economical process provides products in high purity and yields.

专利号:US-5610305-A
优先权日:1995-11-22
标题 :Pyrazole-and piperidine-containing compounds and their metal complexes as light stabilizers
发明人：KVITKO IDEL Y; AZRAN JACK
权利人:UV STAB LTD
摘要:Novel pyrazole-containing compounds useful as light-stabilizers for polymers, their Ni, Zn, Cu, and Co metal complexes, and methods for the synthesis of such complexes are provided. The compounds include a hindered amine light stabilizer (HALS) such as a substituted piperidine, thereby incorporate the properties of UV absorbers and redical scavengers. The compounds are of the formulas I and II, R2 is methyl, X is oxygen or sulphur, Z is oxygen or N-aryl, and R3 is hydrogen, alkyl, a derivative of carboxyacryloyl or carboxybenzoyl or a derivative of pyrazole. The compounds and their metal complexes are highly compatible with various polymers, thermostable, and retain their photostability under conditions of continuous and intensive irradiation. Methods for the synthesis of metal complexes include the reaction of: (a) a compound with metal acetate; or (b) a metal complex with anhydride or a pyrazole derivative.