摘要 开发了一种方便的两步合成磷酸化位阻亚甲基醌。第一阶段涉及亚磷酸与位阻酚反应形成相应的膦酸盐,其在第二阶段的氧化产生相应的亚甲基醌。所得稳定的磷酸化空间位阻亚甲基醌与双膦反应产生新的磷酸化叶立德。通过化学、物理和物理化学方法(IR、 1 H 和31 P NMR,以及元素和 X 射线衍射分析)确定了合成化合物的组成和结构。
Synthesis of novel phosphorus-containing sterically hindered phenols by the reaction of diphenyl (3,5-di-tert-butyl-4-oxocyclohexa-2,5-dienylidene)methylphosphonate with phenols
作者:T. R. Shaekhov、E. M. Gibadullina、Yu. K. Voronina、V. V. Syakaev、D. R. Sharafutdinova、A. R. Burilov、M. A. Pudovik
DOI:10.1007/s11172-011-0303-8
日期:2011.10
Diphenyl (3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate was oxidized to the corresponding methylidenequinonoid derivative. The addition of phenols to the exocyclic double bond of this compound gave phosphonates with two phenol moieties.
Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester
申请人:——
公开号:US20030083191A1
公开(公告)日:2003-05-01
This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles mprising the polyester.
Hindered phenolic cyclic phosphonates and stabilized compositions
申请人:Ciba-Geigy Corporation
公开号:US04093588A1
公开(公告)日:1978-06-06
The compounds are hindered phenolic mono- and bicyclic phosphonate compounds having the formula ##STR1## wherein R.sup.1 is alkyl, R.sup.2 is tert-alkyl, R.sup.3 and R.sup.4 are independently hydrogen or alkyl, R.sup.5 is hydrogen, alkyl or phenyl, R.sup.6 is alkyl or phenyl, R.sup.7 is lower alkyl and R.sup.8 is alkyl, phenyl or phenyl substituted with a lower alkyl group. These compounds are usually prepared by reaction of a tert-alkylsubstituted hydroxybenzylphosphonate ester with a suitable 1,2 or 1,3 polyol. Alternatively the compounds can be made by reaction of an alkali metal salt of the substituted benzylphosphonic acid with an appropriate alkylene dihalide. The compounds are useful as stabilizers for organic materials subject to oxidative, thermal or photochemical degradation.
Process for Producing Polyester, Polyester Produced Using Said Process, and Polyester Molded Product
申请人:Kageyama Katsuhiko
公开号:US20080249280A1
公开(公告)日:2008-10-09
This invention provides a polyester and a polyester molded product, which, while maintaining color tone, transparency, and thermal stability, can realize a high polycondensation rate, are less likely to cause the production of polycondensation catalyst-derived undesired materials, and can simultaneously meet both quality and cost effectiveness requirements, which can exhibit the characteristic features, for example, in the fields of ultrafine fibers, high transparent films for optical use, or ultrahigh transparent molded products. These advantages can be realized by using, in the production of a polyester in the presence of an aluminum compound-containing polyester polycondensation catalyst, an aluminum compound having an absorbance of not more than 0.0132 as measured in the form of an aqueous aluminum compound solution, prepared by dissolving the aluminum compound in pure water to give a concentration of 2.7 g/liter in terms of the amount of aluminum element, under conditions of cell length 1 cm and wavelength 680 nm.
Synthesis and Structure of Quaternary Phosphonium Salts Based on Phosphorylated Sterically Hindered Phenols
作者:I. V. Galkina、V. V. Andriyashin、S. R. Romanov、R. R. Davletshin、O. K. Pozdeev、M. P. Shulaeva、I. A. Litvinov、Yu. V. Bakhtiyarova
DOI:10.1134/s1070363222070040
日期:2022.7
synthesis of quaternary phosphonium salts with two phosphorus atoms [P(III) and P(V)] based on phosphorylated hindered phenols. Stable phosphonium salts were obtained, the composition and structure of which were established by a complex of chemical, physical and physicochemical methods (1Н and 31Р NMR, IR spectroscopy, elemental and X-ray diffraction analysis). The resulting phosphonium salts have high
摘要 开发了一种基于磷酸化受阻酚合成具有两个磷原子 [P(III) 和 P(V)] 的季鏻盐的程序。获得了稳定的鏻盐,其组成和结构是通过化学、物理和物理化学方法(1 Н 和31 Р NMR、IR 光谱、元素和 X 射线衍射分析)的综合确定的。所得鏻盐对人和动物的致病性和机会性微生物群落具有高抗微生物活性。