Abstract:
Phosphorus-containing benzoxazine-based bisphenols and derivatives thereof are disclosed. The phosphorus-containing benzoxazine-based bisphenols are prepared by reacting DOPO with benzoxazine to form the phosphorus-containing benzoxazine-based bisphenols. The phosphorus-containing benzoxazine-based bisphenols can further to form advanced epoxy resins. The advanced epoxy resins can further be cured to form flame retardant epoxy thermosets.
Abstract:
The Phosphorus-containing bisphenols and preparing method thereof are disclosed. A method for producing the phosphorus-containing bisphenol of the formula (1) includes reacting compounds respectively defined by a formula (a), (b), (c) and an acid catalyst to yield compounds of phosphorus-containing bisphenol.
Abstract:
The present invention provides phosphorus-based oxazine compounds and the preparation method thereof. The phosphorus-based oxazine compounds of the present invention can provide better fire-resistant characteristics, while the preparation method for the phosphorus-based oxazine compound of the present invention can offer high yields and/or high purity phosphorus-based oxazine compounds.
Abstract:
A series of novel phosphorus-containing compounds having the following formula is provided: in which: R1-R4, A, Q and m are as defined in the specification. A process for the preparation of the compound of formula (I) is also provided. A polymer of formula (PA), and preparation process and use thereof are further provided. A polymer of formula (PI), and preparation process and use thereof are also provided.
Abstract:
The Phosphorus-containing bisphenols and preparing method thereof are disclosed. A method for producing the phosphorus-containing bisphenol of the formula (1) includes reacting compounds respectively defined by a formula (a), (b), (c) and an acid catalyst to yield compounds of phosphorus-containing bisphenol.
Abstract:
An active-hydrogen-containing (carboxyl or hydroxyl) phosphorus compound is provided. An epoxy resin semi-thermoset formed by bonding the phosphorus compound to an epoxy group is also provided. A flame-retardant epoxy resin thermoset is formed after reacting the epoxy resin semi-thermoset with a curing agent. The epoxy resin thermoset possesses excellent flame retardancy, heat stability, and high glass transition temperature (Tg), does not produce toxic and corrosive fumes during combustion, and thus is an environmentally friendly flame-retardant material.
Abstract:
A series of novel phosphorus-containing compounds having the following formula are disclosed: wherein R1-R12, A, B, D, X, and Y are as defined in the specification. A process for the preparation of the compound of formula (1), a curing agent, and a flame resistant epoxy resin and a preparation process thereof are also provided.
Abstract:
A method of manufacturing new materials for a printed circuit board and Low-Earth Orbit (LEO) spacecraft is provided. The present invention includes dinitro, diamine, various phosphorous-containing polyimides and polyamides, and synthesizing methods thereof. The polymers of the embodiment of present invention exhibit good flame retardancy, high glass transition temperature, good mechanical properties and superior oxygen resistance, so they are good materials for Low-Earth Orbit applications. Besides, these polymers can also be used as matrix for halogen-free flexible printed circuit board.
Abstract:
The present invention provides novel phosphinated compounds of monofunctional, bifunctional, multifunctional phenols represented by the following formulae and their derivatives, and preparation methods thereof:
Abstract:
A series of novel phosphorus-containing compounds having the following formula is provided: in which: R1-R4, A, Q and m are as defined in the specification. A process for the preparation of the compound of formula (I) is also provided. A polymer of formula (PA), and preparation process and use thereof are further provided. A polymer of formula (PI), and preparation process and use thereof are also provided.