IT1251180B - Processo per la degradazione della lignina con diossirani - Google Patents
Processo per la degradazione della lignina con diossiraniInfo
- Publication number
- IT1251180B IT1251180B ITMI912305A ITMI912305A IT1251180B IT 1251180 B IT1251180 B IT 1251180B IT MI912305 A ITMI912305 A IT MI912305A IT MI912305 A ITMI912305 A IT MI912305A IT 1251180 B IT1251180 B IT 1251180B
- Authority
- IT
- Italy
- Prior art keywords
- diossirans
- lignin degradation
- lignin
- formula
- degradation
- Prior art date
Links
- 229920005610 lignin Polymers 0.000 title abstract 3
- 230000015556 catabolic process Effects 0.000 title abstract 2
- 238000006731 degradation reaction Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- ASQQEOXYFGEFKQ-UHFFFAOYSA-N dioxirane Chemical compound C1OO1 ASQQEOXYFGEFKQ-UHFFFAOYSA-N 0.000 abstract 1
- 150000004844 dioxiranes Chemical class 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Compounds Of Unknown Constitution (AREA)
- Paper (AREA)
Abstract
Processo per la degradazione della lignina con diossirani in cui la lignina o un suo derivato viene trattato in un mezzo acquoso, con almeno un diossirano avente la formula: FORMULA I in cui i simboli R ed R' rappresentano indifferentemente gruppi inferiori alchilici o arilici anche fluoro-sostituiti.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI912305A IT1251180B (it) | 1991-08-28 | 1991-08-28 | Processo per la degradazione della lignina con diossirani |
EP92112823A EP0529326A1 (en) | 1991-08-28 | 1992-07-28 | Process for the degradation of lignin by means of dioxiranes |
CA002077092A CA2077092A1 (en) | 1991-08-28 | 1992-08-28 | Process for the degradation of lignin by means of dioxiranes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI912305A IT1251180B (it) | 1991-08-28 | 1991-08-28 | Processo per la degradazione della lignina con diossirani |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI912305A0 ITMI912305A0 (it) | 1991-08-28 |
ITMI912305A1 ITMI912305A1 (it) | 1993-02-28 |
IT1251180B true IT1251180B (it) | 1995-05-04 |
Family
ID=11360583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI912305A IT1251180B (it) | 1991-08-28 | 1991-08-28 | Processo per la degradazione della lignina con diossirani |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0529326A1 (it) |
CA (1) | CA2077092A1 (it) |
IT (1) | IT1251180B (it) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2154778A1 (en) * | 1993-02-01 | 1994-08-18 | Raymond C. Francis | Improved process and composition for delignifying a lignocellulosic material |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991012369A1 (en) * | 1990-02-16 | 1991-08-22 | Pulp And Paper Research Institute Of Canada | Bleaching of lignocellulosic material with dioxiranes |
DE69202149T2 (de) * | 1991-02-12 | 1995-11-09 | Pulp Paper Res Inst | Bleichen von lignocellulosischen Materialien mit aktiviertem Sauerstoff. |
-
1991
- 1991-08-28 IT ITMI912305A patent/IT1251180B/it active IP Right Grant
-
1992
- 1992-07-28 EP EP92112823A patent/EP0529326A1/en not_active Withdrawn
- 1992-08-28 CA CA002077092A patent/CA2077092A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ITMI912305A0 (it) | 1991-08-28 |
CA2077092A1 (en) | 1993-03-01 |
EP0529326A1 (en) | 1993-03-03 |
ITMI912305A1 (it) | 1993-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970814 |