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1. 发明授权

US06248879B1 Polyanhydride crosslinked fibrous cellulosic products and process for their preparation 有权
标题翻译：聚酐交联纤维素纤维制品及其制备方法
公开(公告)号：US06248879B1
公开(公告)日：2001-06-19
申请号：US09373684
申请日：1999-08-13
申请人： Ronald L. Anderson , Wendell W. Cattron , Vincent F. Smith, Jr. , David J. Fenoglio
发明人： Ronald L. Anderson , Wendell W. Cattron , Vincent F. Smith, Jr. , David J. Fenoglio
IPC分类号： C08B1510
CPC分类号： C08H8/00 , C08B15/10 , D06M13/17 , D06M13/1845 , D06M13/224 , D06M15/53 , D06M2101/06 , D21C9/005
摘要： A process for preparation of crosslinked cellulosic products containing at least 30 wt. % cellulosic fibers and the polyanhydride crosslinked cellulosic products resulting therefrom wherein a cellulosic material is treated with an aqueous solution of a polycarboxylic acid formed by hydrolysis of a polyanhydride of the structure which comprises the reaction product of trimellitic anhydride and a diol in the mole ratio of from about 2.0:0.9 to about 2.0:1.1, wherein R is selected from the group consisting of alkyl, alkylene and cycloalkylene moieties of up to 12 carbon atoms and ethylene oxide and propylene oxide moieties of molecular weight up to about 6000, wherein said cellulosic material is impregnated with an aqueous solution of said polyanhydride, dried, and heated to a temperature of from about 120° C. to about 200° C. at ambient pressure to obtain crosslinking of the cellulose fibers with the said polyanhydride by an ester bond between the hydroxyl groups of the cellulosic fibers and the anhydride groups of the anhydride. Fibrous cellulosic products are readily repulped paper with improved wet strength, pulp fluff with improved wet resilience, wood oriented strand board with improved moisture resistance, and textile products with improved durable press and reduced shrink characteristics.
摘要翻译：一种制备交联纤维素产品的方法，其包含至少30wt。％的纤维素纤维和由此产生的聚酐交联的纤维素产品，其中纤维素材料用多元羧酸的水溶液处理，所述多元羧酸的水溶液是通过水解包含偏苯三酸酐和二醇的反应产物的结构的聚酐形成的，约2.0：0.9至约2.0：1.1，其中R选自最高达12个碳原子的烷基，亚烷基和亚环烷基部分，分子量高达约6000的环氧乙烷和环氧丙烷部分，其中所述纤维素材料用所述聚酐的水溶液浸渍，干燥并在环境压力下加热至约120℃至约200℃的温度，以通过所述聚酐之间的酯键使纤维素纤维与所述聚酐交联纤维素纤维的羟基和酸酐的酸酐基团。纤维素纤维素产品易于重新制备具有改进的湿强度的纸浆，具有改善的湿回弹性的纸浆绒毛，具有改善的耐湿性的木材定向刨花板以及具有改进的耐久压制和降低的收缩特性的纺织产品。

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