Patent ID: 8173022

Claim:
A packing material manufactured by using a method for manufacturing a packing material, comprising: a first step of reacting an inorganic particle having a hydroxyl group with a silane coupling agent having an alkenyl group with a carbon number of 2 or more and 8 or less and/or an alkenyl group with a carbon number of 2 or more and 7 or less, and an additional step of reacting the inorganic particle having reacted with the silane coupling agent with a silane coupling agent having no alkenyl group or alkynl group, and; a second step of reacting the inorganic particle having reacted with the silane coupling agent with a compound represented by a general formula (1) of: wherein R 1 is an alkyl group with a carbon number of 4 or more and 50 or less or an aryl group with a carbon number of 6 or more and 30 or less and each of R 2 and R 3 is independently a hydrogen atom, a chloro group, or an alkyl group with a carbon number of 1 or more and 4 or less.