Title:
アルコキシル化アルキルアルコール界面活性剤を用いたパルプの脱樹脂化方法
Document Type and Number:
Japanese Patent JP4921707
Kind Code:
B2
Abstract:
This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate of formula RO[(CH2CHCH3O)x(CH2CH2O)y]M wherein R is C4 to C40 alkyl; x is 1-50; y is 0-100 and M is H or an alkali metal, a cooking liquor comprising sodium hydroxide and sodium sulfite and the alkyl alcohol alkoxylate and a deresinated pulp prepared according to the method.
Inventors:
Dajrara, Prasad, Wai.
Swartz, James, Jay.
Swartz, James, Jay.
Application Number:
JP2004527541A
Publication Date:
April 25, 2012
Filing Date:
April 10, 2003
Export Citation:
Assignee:
NALCO COMPANY
International Classes:
D21C1/00; D21C3/06; D21C3/22
Domestic Patent References:
| JPS5328522B2 | 1978-08-15 | |||
| JP2989588B1 | 1999-12-13 | |||
| JP2000136399A | 2000-05-16 | |||
| JP2001064888A | 2001-03-13 |
Foreign References:
| US5728265A | 1998-03-17 | |||
| WO1998003730A1 | 1998-01-29 |
Attorney, Agent or Firm:
Akihiko Yamashita