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Title:
METHOD FOR USING POPLAR BARK TO PRODUCE ACETYLATION-GRADE DISSOLVING PULP
Document Type and Number:
WIPO Patent Application WO/2020/082427
Kind Code:
A1
Abstract:
A method for using poplar bark to produce acetylation-grade dissolving pulp: adding a promoter for pre-hydrolysis; Soda/AQ boiling stage I; Soda/AQ boiling stage II; OPDQEPP bleaching; and enzyme co-processing. A high purity and highly reactive poplar bark acetylation-grade dissolving pulp is thus prepared. The chemical products used are clean and environmentally friendly, and the production process is clean.

Inventors:
WU CHAOJUN (CN)
YU DONGMEI (CN)
LI RONGGANG (CN)
Application Number:
PCT/CN2018/114525
Publication Date:
April 30, 2020
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
UNIV QILU TECHNOLOGY (CN)
International Classes:
D21C3/02; D21C1/00; D21C9/10
Domestic Patent References:
WO2002081816A12002-10-17
Foreign References:
CN102912667A2013-02-06
CN102277762A2011-12-14
CN104391078A2015-03-04
CN1940177A2007-04-04
CN107974856A2018-05-01
CN103015253A2013-04-03
Attorney, Agent or Firm:
BEIJING SORIBONG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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