Additive, Use of Said Additive in Paper or Board Production, a Method of Improving Paper or Board Manufacturing and a Method of Improving Paper or Board Product

Abstract

An additive for paper or board production e.g. for decreasing pitch problems. The additive includes at least a component including fatty acid glycerides, preferably triglycerides, comprising a high percentage of unsaturated, preferably polyunsaturated, fatty acids. Raw or partly polymerized plant oil, such as sunflower oil, may be used.

1 . An additive for paper or board production, the additive includes at least
 a component including fatty acid glycerides,   wherein the fatty acid glycerides are characterized by a high percentage of unsaturated fatty acids.   
     
     
         2 . The additive of  claim 1 , is characterized by the component including fatty acid glycerides in which more than 10 wt. % of the fatty acids have more than 1 double bond. 
     
     
         3 . The additive of  claim 1 , is characterized by the component including fatty acid glycerides in which >60 wt. % of the fatty acids have 2 double bonds. 
     
     
         4 . The additive of  claim 1 , the component including fatty acid glycerides in which >10 wt. % of the fatty acids have 3 double bonds. 
     
     
         5 . The additive of  claim 1  is characterized by the component being raw or partly polymerized plant oil. 
     
     
         6 . The additive of  claim 1  further including one or more emulsion stabilizer selected from the group consisting of natural or synthetic polymers or inorganic particles. 
     
     
         7 . The additive of  claim 1  is characterized by further including one or more surfactants. 
     
     
         8 . The additive of  claim 1  characterized by further including at least one conventional sizing component. 
     
     
         9 . A method for decreasing pitch problems occurring in paper or board production, comprising adding to the paper or board suspension or web an additive including at least a component including fatty acid glycerides, characterized by
 the component including fatty acid glycerides comprising a high percentage of unsaturated fatty acids.   
     
     
         10 . The method of  claim 9 , is characterized by the component including fatty acid glycerides in which more than 10 wt. % of the fatty acids have more than 1 double bond. 
     
     
         11 . The method of  claim 9 , is characterized by the component including fatty acid glycerides in which >60 wt. % of the fatty acids have 2 double bonds. 
     
     
         12 . The method of  claim 9 , is characterized the component including fatty acid glycerides in which >10% of the fatty acids have 3 double bonds. 
     
     
         13 . The method of  claim 9 , is characterized by the component being raw or partly polymerized plant oil. 
     
     
         14 . A method for increasing hydrophobicity of a paper or board product, or for decreasing odor problems in the paper or board product, the method comprises adding to the paper or board suspension or web an additive comprising at least a component including fatty acid glycerides, characterized by
 the component including fatty acid glycerides comprising a high percentage of unsaturated fatty acids.   
     
     
         15 . The method of  claim 14 , is characterized by the component including fatty acid glycerides in which more than 10 wt. % the fatty acids have more than 1 double bond. 
     
     
         16 . The method of  claim 14 , is characterized by the component including fatty acid glycerides in which >60 wt. % the fatty acids have 2 double bonds. 
     
     
         17 . The method of  claim 14 , is characterized by the component including fatty acid glycerides in which >10 wt. % the fatty acids have 3 double bonds. 
     
     
         18 . The method of  claim 14  is characterized by the component being raw or partly polymerized plant oil. 
     
     
         19 . A method of improving runnability in paper or board production by adding the additive according to  claim 1  to
 a fiber suspension including mechanical pulp, and/or   a fiber suspension resulting in a paper or board product containing, wherein the additive is added in the amount of at least 0.5 kg/t.   
     
     
         20 - 21 . (canceled) 
     
     
         22 . The method according to  claim 19  wherein the additive is added in the amount of at least 0.5-10 kg/t.