857367-49-8Relevant academic research and scientific papers
Polymerization of p-cresol, formaldehyde, and piperazine and structure of monofunctional benzoxazine-derived oligomers
Chutayothin, Papinporn,Ishida, Hatsuo
, p. 3897 - 3904 (2011)
By using a secondary amine, e g. piperazine, a Mannich base polymer, having similar structure to the traditional polybenzoxazine, is synthesized. Unlike all the reported polybenzoxazines that are colored, the white polymer shows good thermal property that is close to the degradation temperature of the polybenzoxazine derived from difunctional benzoxazine monomers. 31P NMR spectroscopy in combination with facile phosphorus derivatization and previous model compound studies are utilized to clarify the structures of piperazine-based systems as well as the main chain and end group of traditional polybenzoxazines.
Electrolyte flame retardant additive and preparation method and application thereof
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Paragraph 0070; 0071; 0072; 0073, (2019/12/25)
The invention discloses an electrolyte flame retardant additive, a preparation method of the flame retardant additive and application of the flame retardant additive in a battery electrolyte. The electrolyte flame retardant prepared in the invention is a five-membered cyclic phosphite compound, can be used as an additive in a secondary electrolyte to improve the thermal stability of the electrolyte, while a cyclic structure can form an SEI film on the surface of a negative electrode material, so that the additive can obviously improve the high and low temperature, circulation, storage and other properties of a secondary battery, and the prepared secondary battery not only can be effectively improved in safety, but also can be improved in comprehensive properties. The preparation method ofthe flame retardant additive has the advantages of low raw material cost, simple preparation process steps, safe operation, high product purity and little environmental pollution.
