Patent ID: 6346169
Filing Date: 2002-02-12
Classification: D21H,Y10T

Abstract:
A process for producing a bulky paper, comprising the step of making paper from a pulp feedstock in the presence of a bulking promoter, wherein said bulking promoter is added to the pulp feedstock and evenly blended with the pulp feedstock in a papermaking process step, and said bulking promoter comprising an amphoteric compound, wherein the amphoteric compound is a compound represented by the following formula (a3) to (j3): wherein R31, R32 and R33 are the same as or different from each other, and an alkyl group having 1 to 24 carbon atoms or an alkenyl group having 2 to 24 carbon atoms; R34 is an alkyl, alkenyl or &bgr;-hydroxyalkyl group having 8 to 36 carbon atoms; M is a hydrogen atom, an alkali metal atom, a half a mole of an alkaline earth metal atom or an ammonium group; Y31 is R35NHCH2CH2â€”, wherein R35 is an alkyl group having 1 to 36 carbon atoms, or an alkenyl or a hydroxy alkyl group having 2 to 36 carbon atoms; Y32 is a hydrogen atom or R35NHCH2CH2â€”, R35 being defined above; Z31 is â€”CH2COOM, M being defined above; and Z32 is a hydrogen atom or â€”CH2COOM, M being defined above.