Film-forming size composition

Details Film-forming size composition Film-forming size composition

C - Chemistry, Metallurgy

08

L

400/1351, 6/64

C08L 5/04 (2006.01) C08L 1/00 (2006.01) C08L 3/00 (2006.01) C08L 29/04 (2006.01) D21H 17/27 (2006.01) D21H 17/28 (2006.01) D21H 17/30 (2006.01) D21H 17/31 (2006.01) D21H 17/36 (2006.01)

Patent

CA 2017250

A film forming composition useful as a paper size is described which includes 1-20 parts, preferably 2-15 parts, by weight of a gum selected from the group consisting of xanthan gum, rhamsan gum, welan gum and mixtures thereof; 3-20 parts, preferably 5-17 parts, by weight of a water soluble alginate; and 60-100 parts, preferable 70-90 parts, by weight of starch, polyvinyl alcohol or carboxymethylcellulose with the gum:alginate ratio being not greater than 1:1, preferably not greater than 1:2. The balance of the composition will primarily be water. Additives such as sodium hexametaphosphate may also be present.

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