National Starch and Chemical Corporation

Other

Emil D Mazzarella

Walter Maliczyszyn

Jeffrey G Atkinson

Leonard J Wood, Jr

A shelf stable paper size is prepared from a mixture of a substituted cyclic dicarboxylic acid anhydride and an ethoxylated castor oil.

Storage stable paper size composition containing ethoxylated castor oil

A shelf stable paper size is prepared from a mixture of a substituted cyclic dicarboxylic acid anhydride and an ethoxylated lanolin.

Storage stable paper size composition containing ethoxylated lanolin

A size mixture comprising a higher organic ketene dimer and polyoxyalkylene alkyl or alkyl-aryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.

Method of sizing paper

A size mixture comprising a substituted cyclic dicarboxylic acid anhydride and polyoxyalkylene alkyl or alkyl-aryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.

An improved process for making paper is described which improvement concerns the mitigation or avoidance of a commonly occurring problem in the industry termed 'wet press picking' by means of specified polymeric siloxane additives.

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Mountainside, NJ, United States of America

Emil D Mazzarella