已经研究了氧取代的萘与单线态氧(1 O 2)的反应,并且首次分离了不稳定的过氧化物,并在–78°C下进行了表征。紫外光谱的低温动力学表明,与1,4-二甲基萘相比,烷氧基和甲硅烷氧基取代基显着提高了光氧合速率,而酰氧基取代的并苯对1 O 2呈惰性。反应性与我们通过密度泛函理论计算确定的HOMO能量和自由活化能很好地相关。分离出的过氧化物的不稳定性是由于它们即使在–20°C下在释放1时也会与相应的萘发生非常快速的逆反应。O 2,使其在非常温和的条件下成为该反应物种的上等来源。最终,合成了碳水化合物取代的萘,该萘可与1 O 2可逆反应,并可能在未来的工作中用于对映选择性氧化。
已经研究了氧取代的萘与单线态氧(1 O 2)的反应,并且首次分离了不稳定的过氧化物,并在–78°C下进行了表征。紫外光谱的低温动力学表明,与1,4-二甲基萘相比,烷氧基和甲硅烷氧基取代基显着提高了光氧合速率,而酰氧基取代的并苯对1 O 2呈惰性。反应性与我们通过密度泛函理论计算确定的HOMO能量和自由活化能很好地相关。分离出的过氧化物的不稳定性是由于它们即使在–20°C下在释放1时也会与相应的萘发生非常快速的逆反应。O 2,使其在非常温和的条件下成为该反应物种的上等来源。最终,合成了碳水化合物取代的萘,该萘可与1 O 2可逆反应,并可能在未来的工作中用于对映选择性氧化。
Phosphorus-containing polyphenylene oxide resin, its preparation method, method for preparing prepolymer of phosphorus-containing polyphenylene oxide, resin composition and its application
申请人:Elite Material Co., Ltd.
公开号:US10280260B2
公开(公告)日:2019-05-07
The present invention relates to a phosphorus-containing polyphenylene oxide resin, its preparation method, a method for preparing the prepolymer of the phosphorus-containing polyphenylene oxide, a resin composition and an article thereof, wherein the phosphorus-containing polyphenylene oxide resin has a chemical structure represented by the following formula (I):
wherein R′ is
R″ is
R′″ is hydrogen,
Through the use of the above phosphorus-containing polyphenylene oxide resin, an article made from the resin composition can has good flame retardance, good thermal resistance and a lower percent of thermal expansion while dielectric properties can be maintained, such that the present invention is suitable for use in products such as copper clad laminate and printed circuit board.
PHOSPHORUS-CONTAINING POLYPHENYLENE OXIDE RESIN, ITS PREPARATION METHOD, METHOD FOR PREPARING PREPOLYMER OF PHOSPHORUS-CONTAINING POLYPHENYLENE OXIDE, RESIN COMPOSITION AND ITS APPLICATION
申请人:Elite Material Co., Ltd.
公开号:US20170088669A1
公开(公告)日:2017-03-30
The present invention relates to a phosphorus-containing polyphenylene oxide resin, its preparation method, a method for preparing the prepolymer of the phosphorus-containing polyphenylene oxide, a resin composition and an article thereof, wherein the phosphorus-containing polyphenylene oxide resin has a chemical structure represented by the following formula (I):
wherein R′ is
R″ is
R′″ is hydrogen,
Through the use of the above phosphorus-containing polyphenylene oxide resin, an article made from the resin composition can has good flame retardance, good thermal resistance and a lower percent of thermal expansion while dielectric properties can be maintained, such that the present invention is suitable for use in products such as copper clad laminate and printed circuit board.
An object of the present invention is to provide an ultraviolet curing liquid composition having high sensitivity, excellent storage stability, low viscosity, and excellent fixability after ultraviolet curing. The ultraviolet curable liquid composition of the present invention is an ultraviolet curable liquid composition containing a cationically polymerizable liquid monomer, a photopolymerization initiator and a photopolymerization sensitizer, wherein the cationically polymerizable liquid monomer is a vinyl ether compound, the photopolymerization initiator includes a compound represented by general formula (1), and the photopolymerization sensitizer includes (A) at least one compound selected from the group consisting of a compound represented by general formula (2) and a compound represented by general formula (3), and (B) at least one compound selected from the group consisting of a compound represented by general formula (4) and a compound represented by general formula (5).
RADICAL POLYMERIZATION CONTROL AGENT AND RADICAL POLYMERIZATION CONTROL METHOD
申请人:Kawasaki Kasei Chemicals Ltd.
公开号:US20210122692A1
公开(公告)日:2021-04-29
A conventional polymerization inhibitor is for example an agent to scavenge radicals generated during storage of a radical polymerizable compound and used to stably handle the radical polymerizable compound, but is unnecessary when the radical polymerizable compound is to be subjected to radical polymerization reaction, and is preferably removed at the time of the radical polymerization reaction. The object of the present invention is to obviate inconvenience of removing the polymerization inhibitor at the time of radical polymerization.
The radical polymerization control agent contained in a radical polymerizable composition of the present invention functions as a radical polymerization inhibitor for example stored in a dark place, but loses its radical polymerization inhibiting effect when polymerization is initiated while being irradiated with light at a certain specific wavelength at the time of polymerization. Thus, radical polymerization of the radical polymerizable compound is easily initiated without increasing the amount of a radical polymerization initiator. That is, the radical polymerization control agent of the present invention is a radical polymerization control agent which is a corn pound having an effect to inhibit radical polymerization of a radical polymerizable compound and which loses the radical polymerization inhibiting effect under irradiation with light rays containing light within a wavelength range of from 300 nm to 500 nm.
[EN] PHOTOCURABLE SILICONE RESIN COMPOSITION, SILICONE RESIN MOLDED BODY OBTAINED BY CURING SAME AND METHOD FOR MANUFACTURING SAID MOLDED BODY<br/>[FR] COMPOSITION DE RÉSINE DE SILICONE PHOTODURCISSABLE, CORPS MOULÉ EN RÉSINE DE SILICONE OBTENU PAR DURCISSEMENT DE CELLE-CI ET PROCÉDÉ DE FABRICATION DUDIT CORPS MOULÉ<br/>[JA] 光硬化性シリコーン樹脂組成物及びそれを硬化させたシリコーン樹脂成形体、並びに当該成形体の製造方法