We report herein a visiblelight-induced oxidation of triarylphosphines under aerobic condition with excellent functional group tolerance. In this transformation, the photo catalyst 4-phenylthioxanthone acted as a photosensitizer for the in situ generation of singlet oxygen. This new approach provided a cheaper and greener method for the preparation of phosphine oxide, showing great advantages in environmental
[EN] HIGH HEAT MONOMERS AND METHODS OF USE THEREOF<br/>[FR] MONOMÈRES À CHALEUR ÉLEVÉE ET LEURS PROCÉDÉS D'UTILISATION
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2016014536A1
公开(公告)日:2016-01-28
High purity epoxide compounds, methods for preparing the high purity epoxide compounds, and compositions derived from the epoxide compounds are provided. Also provided are materials and articles derived from the epoxide compounds.
Polarity and Conformational Analysis of Tri(1-naphthyl)phosphine, Tri(2-naphthyl)phosphine, and Their Chalcogenides
作者:A. A. Kuznetsova、D. V. Chachkov、N. A. Belogorlova、V. A. Kuimov、S. F. Malysheva、Ya. A. Vereshchagina
DOI:10.1134/s1070428021080030
日期:2021.8
structure of tri(1- or 2-naphthyl)phosphines and their chalcogenides were determined by the methods of dipole moments, IR spectroscopy, and DFT quantum-chemical calculations at the B3PW91/6-311++G(df,p) level of theory. In solution, tri(1-naphthyl)phosphine prefers a single conformer with a gauche,gauche,gauche orientation of the substituents at the phosphorus. Tri(2-naphthyl)phosphine, as well as both
Phosphine oxide hydroxyaryl mixtures with novolac resins for co-curing epoxy resins
申请人:——
公开号:US20040225080A1
公开(公告)日:2004-11-11
There is disclosed a novel mixture of polyhydroxy phenolic curing agents, such as novolac resins blended with a mixture of mono, bis and tris hydroxyaryl phosphine oxides for co-curing epoxy resins and imparting flame resistance thereto. A preferred composition includes a mixture of monohydroxyaryl, bishydroxyaryl and trishydroxyaryl phosphine oxide and a benzoguanamine/phenol/formaldehyde terpolymer which is used along with an epoxy resin to produce flame-resistant printed wiring boards without the use of halogens.
Novel hydroxyaryl phosphine oxides, glycidyl ethers and epoxy compositions, composites and laminates derived therefrom
申请人:——
公开号:US20040121990A1
公开(公告)日:2004-06-24
The invention provides new compositions of matter that are capable of forming cross-linked polymeric materials upon reaction with various known epoxy-containing compositions. Thus, the compositions of this invention are useful in the manufacturing of prepregs and laminates for PWB applications among many other uses. Preferred compositions of this invention include substituted hydroxyarylphosphine oxide mixtures, the glycidyl ether derivatives, or the epoxy resin oligomer adducts derived therefrom. The materials provide for laminates that have higher glass transition temperatures, improved thermal stability, and that are free of halogen.