CA2076308A1 - Deinking composition for flotation and deinking method - Google Patents
Deinking composition for flotation and deinking methodInfo
- Publication number
- CA2076308A1 CA2076308A1 CA2076308A CA2076308A CA2076308A1 CA 2076308 A1 CA2076308 A1 CA 2076308A1 CA 2076308 A CA2076308 A CA 2076308A CA 2076308 A CA2076308 A CA 2076308A CA 2076308 A1 CA2076308 A1 CA 2076308A1
- Authority
- CA
- Canada
- Prior art keywords
- deinking
- ranges
- oxide
- flotation
- weight
- 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.)
- Granted
Links
- 239000002761 deinking Substances 0.000 title abstract 6
- 239000000203 mixture Substances 0.000 title abstract 5
- 238000005188 flotation Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 abstract 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 abstract 1
- 239000010893 paper waste Substances 0.000 abstract 1
- 229920001451 polypropylene glycol Polymers 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
Classifications
-
- 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
- Paper (AREA)
Abstract
A deinking composition for regeneration of waste paper by flotation comprises 99.7 to 97% by weight of a mixture which comprises monoalkyl ethers of ethylene oxide/propylene oxide copolymers represented by the following general formulas (A) and (B) and the mixing ratio of the compound (A) to the compound (B) ranges from 10:
90 to 90:10 (weight ratio); and about 0.3 to about 3.0% by weight of a polyoxyalkylene oxide selected from the group consisting of polyethylene oxides, polypropylene oxide and ethylene oxide/propylene oxide copolymers:
R1 O - (PO)n 1 - ~(EO)m ~ (PO) n2~ - H ~ (A) R2 O - (EO) m 1 - ~ (EO) m 2 ~ (PO) n ~ - H . . . . .. (g) wherein m/(n1 + n2) ranges .from 0.5 to 1.5; (m1 + m2)/n ranges from 1.1 to 2.0; EO and PO represent ethylene oxide and propylene oxide units respectively; and the EO and PO in the brackets may be in either a random or block configuration. The deinking composition exhibits excellent deinking properties. Therefore, the use of the deinking composition in the flotation method makes it possible to prepare high quality regenerated pulp, for paper-making, having a high brightness and a low content of remaining ink.
90 to 90:10 (weight ratio); and about 0.3 to about 3.0% by weight of a polyoxyalkylene oxide selected from the group consisting of polyethylene oxides, polypropylene oxide and ethylene oxide/propylene oxide copolymers:
R1 O - (PO)n 1 - ~(EO)m ~ (PO) n2~ - H ~ (A) R2 O - (EO) m 1 - ~ (EO) m 2 ~ (PO) n ~ - H . . . . .. (g) wherein m/(n1 + n2) ranges .from 0.5 to 1.5; (m1 + m2)/n ranges from 1.1 to 2.0; EO and PO represent ethylene oxide and propylene oxide units respectively; and the EO and PO in the brackets may be in either a random or block configuration. The deinking composition exhibits excellent deinking properties. Therefore, the use of the deinking composition in the flotation method makes it possible to prepare high quality regenerated pulp, for paper-making, having a high brightness and a low content of remaining ink.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22042791 | 1991-08-30 | ||
| JP220427/1991 | 1991-08-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2076308A1 true CA2076308A1 (en) | 1993-03-01 |
| CA2076308C CA2076308C (en) | 1999-08-17 |
Family
ID=16750948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2076308 Expired - Lifetime CA2076308C (en) | 1991-08-30 | 1992-08-18 | Deinking composition for flotation and deinking method |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2076308C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5840157A (en) * | 1993-02-26 | 1998-11-24 | Lion Corporation | Deinking agent and method of deinking through flotation using the deinking agent |
-
1992
- 1992-08-18 CA CA 2076308 patent/CA2076308C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5840157A (en) * | 1993-02-26 | 1998-11-24 | Lion Corporation | Deinking agent and method of deinking through flotation using the deinking agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2076308C (en) | 1999-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121202 |