COMPOSITION AND LIGHT-EMITTING ELEMENT IN WHICH SAME IS USED

摘要

A composition in which, when 1 g thereof is introduced into a 50-mm borosilicate glass container and heated at 80°C under 1 atm: the curve showing the loss of weight of the composition over time under heating (horizontal axis: time (min) of heating at 80°C; vertical axis: composition weight retention (% by weight)) has at least one inflection point; the slope of the change in weight per unit time (% by weight/min) from a heating time of 0 min to 30 min is less than –1; and the slope of the change in weight per unit time (% by weight/min) from a heating time of 80 min to 120 min is greater than –0.3 and less than 0.