X-ray diffractometry, including the high-temperature method, was used for investigation of the conditions of formation of crystallites of the α- and β-forms, and the melting point of crystallites, in structurally dissimilar polyvinylidene fluoride (PVF 2) samples that had been exposed to gamma...
of ethyleneglycol, propyleneglycol, diethyleneglycol, cyclohexanone, benzyl alcohol, acetate ester, benzoate ester and a mixture thereof to recrystallize and refine the reaction composition, thereby obtaining high-melting point retardant crystal, represented by Formula 1, having a start melting point of ...
of an organic ketone such as cyclohexanone, thoroughly by means of a ball mill to form a paste. The paste is formed into a desired shape, dewaxed in an O2 flow, for example, at about 280 deg.C for about 2 hours, and melted at about 500 deg.C to give a homogeneous melt.浅沼 正...
of an organic ketone such as cyclohexanone, thoroughly by means of a ball mill to form a paste. The paste is formed into a desired shape, dewaxed in an O2 flow, for example, at about 280 deg.C for about 2 hours, and melted at about 500 deg.C to give a homogeneous melt.武田 ...
and a step of obtaining a high melting point flame retardant crystal indicated in chemical formula 1 by recrystallizing the reaction composition by dissolving a mixed solvent of one or more selected from ethylene glycol, propylene glycol, diethylene glycol, cyclohexanone, benzyl alcohol, acetic acid ...
, benzyl alcohol, acetate ester, benzoate esters and a mixture thereof, in order to crystallize and the reagent composition to be cleaned while maintaining protection means - crystal with a high melting point, which is represented by formula 1, having a melting point the beginning of 280掳C. ...