Composition, use of a cellulose ether as thickening agent and production of a coated cellulose-based two-dimensional product

摘要

PCT No. PCT/SE97/00847 Sec. 371 Date Feb. 23, 1999 Sec. 102(e) Date Feb. 23, 1999 PCT Filed May 23, 1997 PCT Pub. No. WO97/46757 PCT Pub. Date Dec. 11, 1997The present invention relates to an aqueous composition for coating, such as sizing or application of a layer of a coating slip, of cellulose-based two-dimensional products. The composition has improved properties at increased temperatures and at high shear rates. These properties are achieved by using as a thickening agent a cellulose ether which is substituted with hydroxyalkyl groups, such as hydroxyethyl and hydroxypropyl, and alkyl groups having 1-3 carbon atoms, and which has a cloud point in the range from 35 C. to 80 C.