This study explores technologies for rosin use in neutral alkaline papermaking conditions,and the development of new anionic resin to be used in neutral-alkaline papermaking.We critically examined the technologies for rosin sizes used in neutral to alkaline papermaking systems,noting physical differences,such as addition points,and differences between polyaluminium compounds and polyamine,metal ions/polyamin*e;and polyamine-epichlorohydrin resin.
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