Preparation of sterically hindered amine ethers
    21.
    发明授权
    Preparation of sterically hindered amine ethers 有权
    空间位阻胺醚的制备

    公开(公告)号:US6117995A

    公开(公告)日:2000-09-12

    申请号:US253161

    申请日:1999-02-19

    摘要: A new process is described for the preparation of a compound of the formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, independently of each other, are C.sub.1 -C.sub.8 alkyl or C.sub.1 -C.sub.5 hydroxyalkyl, or R.sub.1 and R.sub.2 together with the carbon atom they are attached to are C.sub.5 -C.sub.2 cycloalkyl, or R.sub.3 and R.sub.4 together with the carbon atom they are attached to are C.sub.5 -C.sub.12 cycloalkyl; R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9, independently of each other, are H, C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, C.sub.5 -C.sub.12 aryl, C.sub.1 -C.sub.4 haloalkyl, an electron withdrawing group, or C.sub.6 -C.sub.12 aryl which is substituted by a residue selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen; and R.sub.7 and R.sub.8 together may also form a chemical bond; and R is an organic linking group containing 2-500 carbon atoms and forming, together with the carbon atoms it is directly connected to and the nitrogen atom, a substituted, 5-, 6 or 7-membered cyclic ring structure; characterized in that a compound of the formula II ##STR2## is oxidized. The compound of the formula I can be hydrogenated and/or halogenated by conventional methods.Compounds of the formula I and the corresponding hydrogenated and/or halogenated compounds are well suitable as stabilizers for organic material against degradation by light, oxygen and/or heat or yellowing; some are also active as flame retardants.

    摘要翻译: 描述了制备式I化合物的新方法,其中R 1,R 2,R 3和R 4彼此独立地为C 1 -C 8烷基或C 1 -C 5羟烷基,或者R 1和R 2与它们所连接的碳原子一起 为C5-C2环烷基,或R3和R4与它们连接的碳原子一起为C5-C12环烷基; R 5,R 6,R 7,R 8和R 9彼此独立地为H,C 1 -C 8烷基,C 2 -C 8烯基,C 5 -C 12芳基,C 1 -C 4卤代烷基,吸电子基团或被选定的残基取代的C 6 -C 12芳基 C 1 -C 4烷基,C 1 -C 4烷氧基,卤素; 并且R7和R8一起也可以形成化学键; 并且R是含有2-500个碳原子的有机连接基团,并且与碳原子一起直接连接到氮原子上,形成取代的5,6或7元环环结构; 其特征在于式II化合物被氧化。 式I的化合物可以通过常规方法氢化和/或卤化。 式I化合物和相应的氢化和/或卤代化合物非常适合作为有机材料的稳定剂,防止光,氧和/或热或黄化降解; 一些也作为阻燃剂起作用。

    Floorinated polymers and copolymers containing cyclic structures
    22.
    发明授权
    Floorinated polymers and copolymers containing cyclic structures 失效
    含有环状结构的地板聚合物和共聚物

    公开(公告)号:US5710345A

    公开(公告)日:1998-01-20

    申请号:US749504

    申请日:1996-11-15

    CPC分类号: C08F16/32 C07C43/313

    摘要: Polymers and copolymers of one or more fluorinated dienes of structure CFX.sup.1 .dbd.CX.sup.2 --O--CX.sup.3 X.sup.4 --O--CX.sup.2 .dbd.CX.sup.1 F, wherein X.sup.1 and X.sup.2 are F, Cl or H, and X.sup.3 and X.sup.4 are F or CF.sub.3, wherein said dienes essentially form cyclic repetitive units, the comonomers used for preparing copolymers being ethylene unsaturated fluorinated compounds. Processes for preparing the fluorinated dienes having said structure which comprise the reaction in solution between one halogenated olefin and one hypofluorite CX.sup.3 X.sup.4 (OF).sub.2, wherein X.sup.3 and X.sup.4 are F or CF.sub.3, and the dehalogenation or dehydrohalogenation of the linear adduct between one hypofluorite molecule and two olefin molecules. The polymers and copolymers of the invention are particularly suitable for preparing coatings for applications at high temperatures.

    摘要翻译: 结构CFX1 = CX2-O-CX3X4-O-CX2 = CX1F的一种或多种氟化二烯的聚合物和共聚物,其中X 1和X 2是F,Cl或H,且X 3和X 4是F或CF 3,其中所述二烯基本上形成 用于制备共聚物的共聚单体是乙烯不饱和氟化化合物。 用于制备具有所述结构的氟化二烯的方法,其包含在一种卤代烯烃和一种次氟酸盐CX3X4(OF)2之间的溶液中的反应,其中X 3和X 4是F或CF 3,并且一个次氟酸盐分子之间的线性加合物的脱卤或脱卤化氢 和两个烯烃分子。 本发明的聚合物和共聚物特别适用于制备高温应用的涂料。