Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bg Sofijski T UnifiledCriticalBg Sofijski T Uni
Priority to BG9577292ApriorityCriticalpatent/BG51738A1/en
Publication of BG51738A1publicationCriticalpatent/BG51738A1/en
The composition is used for production of paper for writing, printing and packaging, which has improved physical and mechanical properties, increased durability and less susceptible to dusting. The composition contains (in per cent): cellulose from 20 to 50, wood mass from 50 to 80, rosin size - 0.25-2.00 of the absolute dry mass (a.d.m.), kaolin from 1 to 25 of a.d.m., aluminium sulphate from 1 to 5 of a.d.m., and auxiliary chemical agent - starch-urea concentrate, treated with hydrolysed modified polyacrylonitrile at a ratio of 1/2 to 2/1 - 0.25-3.00 per cent of a.d.m.