GB1081913A - Improvements in or relating to the de-inking of printed waste cellulosic stock - Google Patents
Improvements in or relating to the de-inking of printed waste cellulosic stockInfo
- Publication number
- GB1081913A GB1081913A GB2145164A GB2145164A GB1081913A GB 1081913 A GB1081913 A GB 1081913A GB 2145164 A GB2145164 A GB 2145164A GB 2145164 A GB2145164 A GB 2145164A GB 1081913 A GB1081913 A GB 1081913A
- Authority
- GB
- United Kingdom
- Prior art keywords
- examples
- added
- pulper
- thickened
- polyol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
- D21C5/025—De-inking
- D21C5/027—Chemicals therefor
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Paper (AREA)
Abstract
Waste paper is deinked by treating it, preferably at room temperature, with a non-ionic surface-active agent and a polyol. The surface-active agent is of the formula: <FORM:1081913/D1-D2/1> where R is the aryloxy residue of an alkylphenol in which the total number of carbon atoms is between 7 and 30, R1 and R2 are each hydrogen or alkyl, and n is from 2 to 100; examples are the ethylene oxide adducts of nonylphenol and dodecylphenol. The polyol is a compound having more than one hydroxyl group, each of which is attached to a separate carbon atom of an aliphatic skeleton; examples are glycols, glycerol, pentacrythritol, trimethylolethane, trimethylolpropane, 1,2,6-hexantriol, sorbitol, isositol and mixtures of these. An alkali or alkaline salt may also be present; examples are sodium hydroxide, potassium hydroxide and soda ash. Water may be first placed in a pulper and the active deinking agents then added. The waste paper is then added; it may be but need not be shredded beforehand but is preferably added dry. The contents of the pulper are agitated until they are defibred, then dropped to a chest and diluted. The pulp is then washed, thickened, acidified, e.g. with alum, sulphuric acid or SO2, thickened and formed into a web. It may be bleached after acidification.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29441063A | 1963-07-11 | 1963-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1081913A true GB1081913A (en) | 1967-09-06 |
Family
ID=23133287
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2145164A Expired GB1081913A (en) | 1963-07-11 | 1964-05-25 | Improvements in or relating to the de-inking of printed waste cellulosic stock |
| GB368567A Expired GB1081914A (en) | 1963-07-11 | 1964-05-25 | De-inking agent for the de-inking of printed waste cellulosic stock |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB368567A Expired GB1081914A (en) | 1963-07-11 | 1964-05-25 | De-inking agent for the de-inking of printed waste cellulosic stock |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE644750A (en) |
| DE (1) | DE1256054B (en) |
| GB (2) | GB1081913A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483571B1 (en) * | 1990-10-30 | 1995-02-01 | BK LADENBURG GmbH, Gesellschaft für chemische Erzeugnisse | Process for the recycling of fibers by flotation-deinking of waste paper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740664C (en) * | 1939-10-22 | 1944-03-31 | Ig Farbenindustrie Ag | Process for the production of white paper stock from waste paper |
-
0
- BE BE644750D patent/BE644750A/xx unknown
-
1964
- 1964-03-24 DE DEH52143A patent/DE1256054B/en active Pending
- 1964-05-25 GB GB2145164A patent/GB1081913A/en not_active Expired
- 1964-05-25 GB GB368567A patent/GB1081914A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE644750A (en) | 1900-01-01 |
| DE1256054B (en) | 1967-12-07 |
| GB1081914A (en) | 1967-09-06 |
Similar Documents
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|---|---|---|
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| FR2467910B1 (en) | ||
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