Recent Technical Trends and Application for Rosin Sizes (Ⅱ)

Kawamura Takuya, Itose Ryuji, Masuda Wakako, Yokota Kenichiro

doi:10.2524/jtappij.70.128

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.<br>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.<br>Recently, it is getting much interest and concern about food contact substances. In the United States, it is general for the paper chemicals including rosin size to comply with FDA (Food & Drug Administration) regulation, and rosin which is a major component of rosin size has been approved as one of the substances to safely use in paper and paperboard which contact with food. Considering FDA compliance for rosin dispersions, we needed to develop anionic polymer type emulsifier with FDA compliance since there was no anionic polymer approved by FDA as the emulsifier even though its quality was basically advanced.<br>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 and trial result at paper mill are introduced.

Recent Technical Trends and Application for Rosin Sizes (Ⅱ)

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