发明名称 FABRICATION DU PAPIER
摘要 1319371 Paper CABOT CORP and CIBA GEIGY AG 7 Jan 1971 [12 Jan 1970 29 Oct 1970] 739/71 Heading D2B A paper product comprises a paper pulp and as a pigmentary filler an insoluble, infusible, non-porous, particulate urea-formaldehyde polymer having a molar ratio of 1:1-1:2 and a B.E.T. specific surface ranging from 5-100 square metres per gram, the pigmentary filler being present in an amount ranging from 0.5-80% by wt. based on the weight of the dry pulp. The filter is added to a slurry of paper pulp prior to forming the latter into a paper sheet. Water soluble polymeric substances capable of improving the dry and/or wet strength of the paper may be added at the same time. Specified substances are soluble cationic and anionic urea-formaldehyde resins, cationic and nonionic melamineformaldehyde resins, soluble nonionic, anionic or cationic starches, carboxymethyl cellulose, alginates, carboxylated polyacrylamides and polysalt complexes of carboxylated polyacrylamides and polyamines. Other conventional paper modifiers or additives may be added to the filler-pulp slurry, e.g. sizing agents such as ketene dimers, succinic anhydride derivatives, rosin; size precipitants such as alum, or aluminium sulphate; binders, adhesives, dyes, wetting agents, and inorganic pigments such as titanium dioxide, zinc sulphide, kaolin, and chalk.
申请公布号 BE761505(A1) 申请公布日期 1971.06.16
申请号 BE19710761505 申请日期 1971.01.12
申请人 CABOT CORP., 125 HIGH STREET, BOSTON, MASSACHUSETTS, (E.U.A.) 发明人 P. ECONOMOU;J.F. HARDY;A. RENNER;P. ECONOMOU;J.F. HARDY;E. FORSTER;H. DIETHELM.
分类号 D21H17/49;D21H21/28;(IPC1-7):21H/ 主分类号 D21H17/49
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