COOKING AID FOR IMPROVING THE REMOVAL OF EXTRACTIVES IN PULP PRODUCTION, ITS PRODUCTION AND USE

摘要

The present invention relates to a wood cooking aid which comprises a mixture of fatty acids and rosin acids and/or salts thereof in a ratio which is effective in removing the extractives in pulp production. The invention also relates to a method for preparing a wood cooking aid wherein fatty acids and rosin acids are provided in a mixture in a ration which is effective in removing the extractives in pulp production. If desired salts of said acids are prepared by reacting said fatty acid rosin acid mixture containing the desired fatty acid and rosin acid distribution with water and sodium hydroxide. The wood cooking aid of the invention is used in cooking of hardwood.