COMPOSITION OF METHOXYMETHYLPHOSPHONIC ACID ESTERS BASED ON PENTAERYTHRITOL AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2018 - IPC C07F9/40 C09K21/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a composition of methoxymethylphosphonic acid esters based on pentaerythritol and a process for preparation thereof, which can be used as a component, which increases heat resistance and reduces the combustibility of special purpose composite materials used in the aviation and helicopter industry for the manufacture of polymer-plastics. Disclosed composition which is effective for increasing the heat resistance of composite materials comprising the following, wt%: ethoxylated esters of pentaerythritol-tetra-methoxymethylphosphonic acid – 25.0; ethylene glycol – 37.5; absolute ethanol – 37.5.

EFFECT: novel method for preparing said composition by mixing oxyethylated esters of pentaerythritol-tetra-methoxymethylphosphonic acid with a solvent, characterised in that the solvent used is a mixture of ethylene glycol and absolute ethanol with a component ratio, wt%: ethylene glycol – 50; absolute ethanol – 50, and the weight ratio of the components of the composition, wt%: ethoxylated esters of pentaerythritol-tetra-methoxymethylphosphonic acid – 25; solvent – 75.

2 cl, 2 ex, 2 tbl