Chung-shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense

National Chung Hsing University

Hung-Tse Lin

Ching-Hsuan Lin

Wen-Chiung Su

Sheng Lung Chang

Feng-Jen Wang

Yu-Ming Hu

A series of curing agents are provided. The curing agents are multi-functional and phosphorus-containing. The curing agents have excellent processability to be used as an epoxy resin curing agent. The curing agents can be cured to obtain a phosphorus-containing epoxy thermoset with flame retardancy characteristic. The epoxy thermosets are very fit for circuit board substrate having high glass transition temperature; semiconductor packaging material; and related materials.

Processes of synthesizing multi-functional phosphorus-containing epoxy curing agent

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.

Phosphorus-containing benzoxazine-based bisphenols, derivatives thereof, and preparing method for the same

Disclosed is a method for making a low-k, flame-retardant, bi-functional benzoxazine. The method includes the steps of dissolving phosphoric diamine with various functional groups, phenolic adamantane and paraformaldehyde in a solvent at 72&#xb0; C. to 88&#xb0; C. for 7 to 9 hours, and cooling and introducing the solution in n-hexane to separate the low-k, flame-retardant, phosphoric, bi-functional benzoxazine.

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Taichung, Taiwan

Hung-Tse Lin