新規ロジン系エマルションサイズ剤と混合添加法'Co-mingle~®'

摘要

Harima Chemicals Group is the only one manufacturer of tall oil rosin in Japan, and we have our oversea manufacturing bases in 11 countries. By utilizing these advantages, we have been globally developing pine chemical business in various fields such as paper chemicals and printing ink resins. With respect to the paper chemicals, a rosin size is one of the major paper chemicals in the world, and the rosin size has been applied with aluminum sulfate for wide ranges of papermaking pH conditions to give desirable sizing property for paper and paperboard. Therefore, it is very important for us to understand interactions between the rosin size and aluminum sulfate under the papermaking conditions. In this report, the newly developed rosin dispersed sizes, an effective application method of this rosin dispersion based on the mechanism study for sizing performance are introduced.%ロジン系サイズ剤は，紙に耐水性を付与する薬剤で,松から得られるロジン(松やに)を原料としている.枯渴するおそれがある石油や石炭のような化石資源とは異なり，松は植林により20〜30年のサイクルで再生可能(リニューアプル)な資源である.このロジンは，中国，北南米，欧州を中心に生産されており，近年の世界市場におけるロジン販売数量は約120万tと報告されている.2012年のメーカー別ロジン販売数量を図1に示した.