Patent ID: 7413631

Claim:
A papermaking stock comprising a pulp slurry of cellulosic fibers, and a brightness and opacifying agent, said agent being an additive which is a reaction product selected from the group consisting of reaction products formed from: A) an amide reaction a product of C 12 -C 22 fatty acid, condensed with an amine selected from monoalkanol amines, dialkanol amines or diethylene triamine or a mixture thereof; B) an amide reaction product of a triglyceride of a C 12 -C 22 fatty acid condensed with an amine selected from monoalkanol amine, dialkanol amine, or diethylene triamine or a mixture thereof; C) an amide reaction product of an ester of a C 12 -C 22 fatty acid condensed with an amine selected from monoalkanol lower alkyl amine, dialkanol amine, diethylene triamine or a mixture thereof; and D) an ester reaction product of a C 12 -C 22 fatty acid condensed with an alcohol selected from glycerine, ethylene glycol or propylene glycol.