Filler-containing paper and a method for the production of filler-containing paper

Abstract

Filler-containing paper wherein it contains the following component (A) and the following component (B) and, furthermore, the ash content of the paper is 3-40 wt %. (A) Polymer obtained by 20 to 100% hydrolysis of the total formyl groups in a polymer having at least N-vinylformamide as a polymerization component (B) Titanium dioxide and/or calcium carbonate.

1 . A method for the production of filler-containing paper by dewatering a pulp in the presence of a cationic polymer containing vinylamine units and a filler to obtain an ash content of the paper of 3-40 wt %, wherein 
 (A) at least 0.0005% but less than 0.05%, by conversion to solids concentration in terms of the pulp, of a polymer obtained by 20 to 100% hydrolysis of the total formyl groups in a polymer having at least N-vinylformamide as a polymerization component is added to the pulp slurry as a fixing agent for    (B) titanium dioxide and/or calcium carbonate.    
   
   
       2 . The method for the production of filler-containing paper according to  claim 1 , wherein component (A) and component (B) are added to the pulp slurry such that the mass ratio of component (A) to component (B) is of proportions [component (A)/component (B)]=0.001/100 to 0.5/100 by conversion to solids concentration.  
   
   
       3 . A base paper for construction materials, India paper or tip base paper for cigarettes comprising the filler-containing paper produced according to the method of  claim 1 .  
   
   
       4 - 5 . (canceled)