Magnesium oxide particles, resin composition, rubber composition, and shaped body
AssigneeKonoshima Chemical Co., Ltd.
InventorSeiji Matsui
Life of this patent
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Abstract
Provided are magnesium oxide particles which are good in dispersibility in a resin or rubber, can function sufficiently as an acid acceptor or scorch retarder, and do not lower, even after combined with a resin or rubber, material properties thereof; a resin composition; a rubber composition; and a shaped body. The magnesium oxide particles satisfying the following (A) to (C): (A) an average particle size is 5 μm or less; (B) a BET specific surface area is 20 m2/g or more and 200 m2/g or less; and (C) a screen residue by a sieve opening of 45 μm is 0.1% by weight or less.
Claims10
Magnesium oxide particles satisfying the following (A) to (C):
- (A) an average particle size is 5 μm or less;
- (B) a BET specific surface area is 20 m2/g or more and 200 m2/g or less;
- and
- (C) a screen residue by a sieve opening of 45 μm after a slurry prepared by stirring 20 grams of the magnesium oxide particles with 200 ml of ethanol and then adding 200 ml of water is shifted onto the screen is 0.1% by weight or less.
Dependencies are inferred from the claim text.