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US 2003/0201084 A1Published application
Paper bulking promoter
AssigneeKao Corporation
InventorsYasushi Ikeda, Yoichi Ishibashi, Takaaki Tadokoro, Hiromichi Takahashi
Life of this patent
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Abstract
This invention is to provide a paper bulking promoter with which a highly bulky sheet can be obtained without impairing paper strength. Namely, this invention provides a process for producing a bulky paper, comprising the step of making paper from pulp in the presence of a bulking promoter comprising a cationic compound.
Claims8
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 a cationic compound represented by formula (a1) or (b1):
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- wherein in formula (a1) or (b1), R11 and R12 are the same as or different from each other, and each represents an alkyl, alkenyl or β-hydroxyalkyl group having 8 to 24 carbon atoms;
- R13, R14 and R15 are the same as or different from each other, and each of R13, R14 and R15 represents an alkyl group or hydroxyalkyl group having 1 to 8 carbon atoms, benzyl or —(AO)n11—Z11, wherein AO is an oxyalkylene unit having 2 or 3 carbon atoms, Z11 represents a hydrogen atom or an acyl group, and n11 is an integer of 1 to 50;
- R16 represents an alkyl, an alkenyl or β-hydroxyalkyl group having 8 to 36 carbon atoms;
- and X− is an anion.
3 more elements
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 a cationic compound represented by formula (a6) or (b6):
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- wherein in formula (a6) or (b6), R61 and R63 are the same or different from each other, and each represents an alkyl, alkenyl or β-hydroxyalkyl group having 7 to 35 carbon atoms;
- R65 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms;
- R62 and R64 are the same or different from each other, and each represents an alkyl group having 1 to 3 carbon atoms;
- and X− is an anion.
3 more elements
Dependencies are inferred from the claim text.