PURPOSE: To obtain a carrier from which an oily material hardly ooze out by dispersing the oily material in a base material comprising an ethylene-α-olefin copolymer having a specified density and crosslinking the dispersion.
CONSTITUTION: An oily material (e.g. a paraffin wax) is dispersed in a base material which comprises an ethylene-α-olefin copolymer (e.g. an ethylene- propylene copolymer) having a density of 0.88g/cm3 or lower and, if necessary, contg. a polyolefin (e.g. a high-density polyethylene) for improving the strengths of the copolymer. The resulting dispersion is crosslinked (e.g. peroxide crosslinking) to give the objective carrier, which has a low tackiness and undergoes little shape change due to expansion and contraction caused by repeated heating and cooling. The strengths of the carrier can be increased by the addition of the polyolefin.
YOKOYAMA MASARU
KISHIMOTO TAKASHI
SEI MIKIO
MAEDA FUTOSHI
TSURUKI MITSUHIRO
