30 results about "Phosphole" patented technology

The invention discloses a method for preparing nano phosphorus-nitrogen inrumescent flame retardant melamine phosphate (MP) by means of a supercritical method. The method comprises the steps that phospholipid melamine, phosphoric acid, surface active agents and the like are weighed, and are dissolved in a little distilled water; the dissolved solution is added to a supercritical reaction kettle, temperature and pressure are controlled, and the pressure is kept for certain time; the nano phosphorus-nitrogen inrumescent flame retardant melamine phosphate (MP) is obtained by releasing the pressure. The characteristics that supercritical carbon dioxide fluid is high in solvent resistance and environmentally friendly and can be easily separated from products after preparation is finished are utilized, and the nano phosphorus-nitrogen inrumescent flame retardant is prepared. In the preparation process of the method, toxic organic solvent is not used, and pollution to environment is avoided. The prepared phosphorus-nitrogen inrumescent flame retardant is small in particle size and easy to disperse, the problem that nano particles are poor in dispersity in polymer matrixes is solved, and therefore high fire resistance is achieved. The process is simple, and cost is low.

The invention discloses a benzo polyaza and phosphole oxygen ligand and a complex containing same, a preparation method and application. The invention provides a benzo polyaza and phosphole oxygen ligand as shown in formula I and a complex containing same. A complex of the benzo polyaza and phosphole oxygen ligand and a transition metal halide enables direct coupling of carbon-carbon bonds betweenbig steric hindrance alkyl and aryl; the reaction conditions are gentle; the catalyzing efficiency is high; the coupling reaction process of the carbon-carbon bonds between big steric hindrance alkyland aryl can be extremely simplified; the practicability is high; the reaction cost can be obviously decreased, and the reaction period is reduced; the complex is free from other side products without being required in the catalyzing process. The formula refers to the description.

A phosphatidic biological degradable polyester and its production are disclosed. The production is carried out by phosphatidic group of phosphoryl choline with bionic function condensing reacting, covalent interlinking onto biological degradable polymer chain, and obtaining degradable polymer with phosphatide modification. It achieves good biological degradability, biological compatibility, and self-combing ability for medicine releasing carrier materials.