ammonia or a primary aliphatic diamine of the type h 2 n r nh 2 wherein r is an alkylene radical of from 2 8 carbon atoms this treatment may be carried out at the end of a bleaching sequence alternatively it can be carried out during any alkaline bleaching step at which the ph is 10 or above as long as this step is not followed by a chlorination or hypochlorite stage the temperature and time for the preparation of the cationic cellulose are not critical the addition and or reaction product between cellulose and the epi dma condensate appears to form very rapidly the cationized cellulose product may then be dried by conventional sheeting as loose fiber or in other physical forms it may be also used without further drying wherein it is suspended in water and the appropriate latex simply added with gentle agitation the following examples will serve to show specific embodiments of the present invention bleached douglas fir kraft pulp was obtained from a northwestern pulp mill samples having 15 5 g of dry fiber were slurried in 760 ml of water to produce a suspension having 2 consistency the ph was adjusted to 10 5 with naoh and 0 16 g of a 50 aqueous solution 5 kg.