MASTER BATCH FOR POLYOLEFIN CROSSLINKED FOAM, POLYOLEFIN CROSSLINKED FOAM, AND MANUFACTURING METHOD OF POLYOLEFIN CROSSLINKED FOAM

摘要

To provide a polyolefin crosslinked foam low in remaining ammonium concentration, capable of preventing contamination or corrosion due to ammonia, and suitable for impact cushioning applications such as a floor material or a wall material of house, a joint filling material of building, an automotive interior member, a member for package or the like.SOLUTION: There is provided a polyolefin crosslinked foam having density of 20 to 160 kg/m, ammonia concentration of 0 ppm to 100 ppm, and glass haze degree of 5% or less, obtained by a mixed article containing a master batch for polyolefin crosslinked foam containing an ethylene vinyl acetate copolymer with vinyl acetate content of 18 wt.% or more and/or an ethylene-propylene-diene three dimensional copolymer with Mooney viscosity (ML1+4, 100°C) of 20 to 40, and sodium bicarbonate and p,p'-oxybisbenzenesulfonyl hydrazide as foaming agents, a polyolefin resin, and a crosslinking agent.SELECTED DRAWING: Figure 1