申请人:National Starch and Chemical Investment
Holding Corporation
公开号:EP0743394A2
公开(公告)日:1996-11-20
A paper size composition comprising an aqueous dispersion of:
a) a cyclic dicarboxylic acid anhydride containing hydrophobic substitution, and
b) a cationic, non-degraded starch which is further modified to a DS of from about 0.005 to 0.4 with either:
i) an ether group, R ― O ― where R is an hydroxyalkyl or alkyl of 1 to 4 carbon atoms, or alkenyl of 2 to 4 carbon atoms, or
ii) an ester group,
where R is an alkyl of 1 to 4 carbon atoms or alkenyl of 2 to 4 carbon atoms, and wherein the non-degraded, fully modified starch has a viscosity of at least 1,000 cPs at 30°C in an 8% aqueous solution. The invention also involves the method of sizing paper products using the above described size composition.
一种纸张尺寸组合物,由以下物质的水性分散体组成:
a) 含有疏水取代的环状二羧酸酐,和
b) 未经降解的阳离子淀粉,该淀粉经以下任一物质进一步改性后,DS 值约为 0.005 至 0.4:
i) 一个醚基,R - O - 其中 R 是羟基烷基或 1 至 4 个碳原子的烷基,或 2 至 4 个碳原子的烯基,或
酯基
其中 R 是 1 至 4 个碳原子的烷基或 2 至 4 个碳原子的烯基,其中未降解的完全改性淀粉在 8%的水溶液中 30℃时的粘度至少为 1,000 cPs。本发明还涉及使用上述粒度组合物对纸制品进行施胶的方法。