| 摘要 |
An agent for enhancing brightness and opaqueness in paperboard comprises a reaction product selected from the groups consisting of: A) an amide reaction product of a C12-C22 fatty acid, condensed with an ami ne selected from monoalkanol amines, dialkanol amines or diethylene triamine or a mixture thereof. B) an amide reaction product of a triglyceride of a C12-C22 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 C12-C22 fatty acid condensed with an amine selected from monoalkanol lower alkyl amine, dialkanol amine, diethyle ne triamine or a mixture thereof; and D) an ester reaction of a C12-C22 fatty acid condensed with an alcohol selected from glycerine, ethylene glycol or propylene glycol.
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