Hindered amine light stabilizer
    2.
    发明授权
    Hindered amine light stabilizer 失效
    受阻胺光稳定剂

    公开(公告)号:US5688951A

    公开(公告)日:1997-11-18

    申请号:US613898

    申请日:1996-03-11

    申请人: Mark R. Rubino

    发明人: Mark R. Rubino

    摘要: New N-substituted piperidines useful as light stabilizers in synthetic resins are disclosed. They are 1-(2,7-octadienyl)-2,2,6,6-tetraalkylpiperidines wherein the alkyl groups are independently selected lower alkyl groups such as methyl or ethyl and the 3 and 5 positions may be substituted by methyls. The ring may be monounsaturated; a new compound 1-(2,7-octadienyl)-2, 2,6,6-tetramethyl-3-pyridine is described.

    摘要翻译: 公开了用作合成树脂中的光稳定剂的新的N-取代的哌啶。 它们是1-(2,7-辛二烯基)-2,2,6,6-四烷基哌啶,其中烷基独立地选自低级烷基如甲基或乙基,3和5位可被甲基取代。 该环可能是单不饱和的; 描述了新的化合物1-(2,7-辛二烯基)-2,2,6,6-四甲基-3-吡啶。

    Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane
    3.
    发明授权
    Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane 失效
    制备1,1-双 - (4-羟基苯基)-3,3,5-三甲基环己烷的方法

    公开(公告)号:US5336812A

    公开(公告)日:1994-08-09

    申请号:US150893

    申请日:1993-11-12

    IPC分类号: C07C37/20 C07C39/17 C07C39/15

    CPC分类号: C07C37/20 C07C2101/14

    摘要: A process for making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane via the acid catalyzed reaction of phenol and 3,3,5-trimethylcyclohexanone containing an organic thiol co-catalyst is described wherein the organic thiol is rejuvenated by treatment with a halogen acid and recycled to a fresh mixture of phenol and 3,3,5-trimethylcyclohexanone to make additional 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane.

    摘要翻译: 描述了通过苯酚和含有有机硫醇助催化剂的3,3,5-三甲基环己酮的酸催化反应制备1,1-双 - (4-羟基苯基)-3,3,5-三甲基环己烷的方法,其中有机 硫醇通过用卤酸处理而再生,并再循环到苯酚和3,3,5-三甲基环己酮的新鲜混合物中以制备另外的1,1-双 - (4-羟基苯基)-3,3,5-三甲基环己烷。

    Method of making teritiary hindered amines
    4.
    发明授权
    Method of making teritiary hindered amines 失效
    制备三嗪受阻胺的方法

    公开(公告)号:US5856491A

    公开(公告)日:1999-01-05

    申请号:US906788

    申请日:1997-08-09

    申请人: Mark R. Rubino

    发明人: Mark R. Rubino

    CPC分类号: C07D295/023 C07D211/46

    摘要: Fully hindered secondary amines, typically tetramethyl piperidine, are reacted with terminally unsaturated electrophilic compounds having at least five carbon atoms to obtain tertiary hindered amines. The reaction is conducted with an excess of secondary amine, preferably in the presence of a specified solvent such as N-methyl pyrrolidinone.

    摘要翻译: 完全受阻的仲胺(通常为四甲基哌啶)与具有至少五个碳原子的末端不饱和亲电子化合物反应以获得叔胺。 该反应用过量的仲胺进行,优选在特定溶剂如N-甲基吡咯烷酮的存在下进行。

    Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane
    5.
    发明授权
    Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane 失效
    制备1,1-双 - (4-羟基苯基)-3,3,5-三甲基环己烷的方法

    公开(公告)号:US5493060A

    公开(公告)日:1996-02-20

    申请号:US307127

    申请日:1994-09-16

    摘要: This invention provides a unique method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane ("BPTMC"). The disclosed method manufactures BPTMC from ketals and hemithioketals of 3,3,5-trimethylcyclohexanone ("TMC"). The reaction takes place in the presence of an acid catalyst, and optionally added co-catalysts. Additionally, applicants have disclosed a particularly useful method of manufacturing BPTMC from TMC and alcohol and/or thiol starting materials. These starting materials react to form the TMC ketal or thioketal materials. This method is particularly useful in that it allows recovery and recycling of the alcohol and/or thiol.

    摘要翻译: 本发明提供了制备1,1-双 - (4-羟基苯基)-3,3,5-三甲基环己烷(“BPTMC”)的独特方法。 所公开的方法由3,3,5-三甲基环己酮(“TMC”)的缩酮和半硫代缩酮制造BPTMC。 反应在酸催化剂存在下进行,任选地加入助催化剂。 此外,申请人已经公开了从TMC和醇和/或硫醇起始材料制造BPTMC的特别有用的方法。 这些原料反应形成TMC缩酮或硫代缩酮物质。 该方法特别有用,因为其允许酒精和/或硫醇的回收和再循环。

    Process for the preparation of omega-arylalkanoic acids
    6.
    发明授权
    Process for the preparation of omega-arylalkanoic acids 失效
    制备ω-芳基链烷酸的方法

    公开(公告)号:US5149866A

    公开(公告)日:1992-09-22

    申请号:US746276

    申请日:1991-08-14

    IPC分类号: C07C51/02 C07C59/52 C07C59/64

    CPC分类号: C07C59/64 C07C51/02 C07C59/52

    摘要: The present inventon pertains to a process for the preparation of omega-arylalkanoic acids of the genral formulaR--Ar--R.sup.1 --COOHwherein R is hydrogen, hydroxy, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, or aryl; wherein R.sup.1 is C.sub.1 -C.sub.4 alkyl; and wherein Ar is an aryl group which can be further substituted with at least one of hydroxy, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, aryl, halide, amino, or acetamido. The omega arylalkanoic acids of the given formula are prepared using catalysts which provide an improvement over the known Willgerodt-Kindler reaction.The present invention also pertains to methods for removing sulfur during the above-described process for the preparation of the omega-arylalkanoic acids.

    摘要翻译: 本发明涉及制备式R-Ar-R 1 -COOH的ω-芳基链烷酸的方法,其中R是氢,羟基,C 1 -C 8烷基,C 1 -C 8烷氧基或芳基; 其中R1是C1-C4烷基; 并且其中Ar是可以被羟基,C 1 -C 8烷基,C 1 -C 8烷氧基,芳基,卤素,氨基或乙酰氨基中的至少一种进一步取代的芳基。 使用提供对已知Willgerodt-Kindler反应的改进的催化剂制备给定式的ω-芳基链烷酸。 本发明还涉及在上述制备ω-芳基链烷酸的方法中除去硫的方法。