rosin size

rosin size

[′räz·ən ‚sīz]
(materials)
An alkali-treated rosin used as a dry powder or emulsion to surface-size paper products.
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Specific topics include: reasons for sizing, requirements for an internal size, effects of additives, types of rosin size, wet end differences, size and alum, size testing techniques, and synthetic sizes.
Hercules Inc., Wilmington, Delaware, USA, said its pulp and paper division will become the exclusive toll manufacturer of dispersed rosin size for MeadWestvaco Corp., Stamford, Connecticut.
APPLICATION: This study may help in developing new technologies for using rosin size or anionic polymer size under neutral-alkaline papermaking systems.
N-vinylformamide has an active formamido group that has some interesting interactions with cellulose fibers and rosin size particles.
"The major compelling event that drove the introduction and acceptance of microparticle retention and drainage aid systems was the alkaline conversion of the fine paper market with PCC and alkaline size to replace acid papermaking with rosin size and filler clays," said Ciba's Tremont.
All of the sizes were cationic dispersed rosin sizes, a popular and versatile type of rosin size.
And since the Vinings acquisition, Kemira now provides both process additives (defoamers, deinking agents, biocides, deposit control products, etc.) as well as functional additives such as ASA, AKD, rosin size, and polymers to a worldwide market.
The combined business will offer both process additives such as defoamers, deinking agents, biocide, and deposit control products--and Kemira's functional additives, such as ASA, AKD, rosin size, and polymers.
These include polymers and coagulants for retention and water treatment, AKD, ASA and rosin sizes, wet and dry strength chemicals, deposit control and defoaming agents as well as deinking chemicals.
The acquisition would include the transfer of manufacturing and application technology for rosin sizes and wet end chemicals to Kemira, according to the company.
These include polymers and coagulants for retention and water treatment, AKD, ASA and rosin sizes, hydrogen peroxide for bleaching, and certain deposit control and defoaming agents as well as deinking chemicals.
STATISTICAL MODELING AND SIZING DETERMINATION GUIDES FOR DISPERSED ROSIN SIZES