CN1143399A - Method of agglomerating printing ink and formulations for use therein - Google Patents
Method of agglomerating printing ink and formulations for use therein Download PDFInfo
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- CN1143399A CN1143399A CN95191972A CN95191972A CN1143399A CN 1143399 A CN1143399 A CN 1143399A CN 95191972 A CN95191972 A CN 95191972A CN 95191972 A CN95191972 A CN 95191972A CN 1143399 A CN1143399 A CN 1143399A
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- ethylene oxide
- propylene oxide
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 238000009472 formulation Methods 0.000 title claims abstract description 23
- 238000007639 printing Methods 0.000 title claims description 37
- 239000002245 particle Substances 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 28
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003209 petroleum derivative Substances 0.000 claims abstract description 22
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000654 additive Substances 0.000 claims description 27
- 230000000996 additive effect Effects 0.000 claims description 24
- 239000002761 deinking Substances 0.000 claims description 18
- 238000002508 contact lithography Methods 0.000 claims description 14
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 8
- 150000002191 fatty alcohols Chemical group 0.000 claims description 7
- 150000004665 fatty acids Chemical group 0.000 claims description 6
- 150000002430 hydrocarbons Chemical group 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000004537 pulping Methods 0.000 claims description 4
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 150000001924 cycloalkanes Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 239000000976 ink Substances 0.000 description 34
- 239000002002 slurry Substances 0.000 description 10
- 229920001131 Pulp (paper) Polymers 0.000 description 8
- -1 poly(ethylene oxide) Polymers 0.000 description 5
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 4
- 150000001721 carbon Chemical group 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 206010009866 Cold sweat Diseases 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007046 ethoxylation reaction Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 101000666896 Homo sapiens V-type immunoglobulin domain-containing suppressor of T-cell activation Proteins 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 102100038282 V-type immunoglobulin domain-containing suppressor of T-cell activation Human genes 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- IJJVMEJXYNJXOJ-UHFFFAOYSA-N fluquinconazole Chemical compound C=1C=C(Cl)C=C(Cl)C=1N1C(=O)C2=CC(F)=CC=C2N=C1N1C=NC=N1 IJJVMEJXYNJXOJ-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
A method of de-inking non-impact printed paper comprises contacting repulped paper with a formulation comprised of a derivatized ethylene oxide/propylene oxide polymer and a petroleum hydrocarbon distillate. The process separates the ink from the paper and agglomerates the separated ink into particles of a size sufficient that they can be efficiently removed from the paper fibers.
Description
Technical field
The present invention relates to the paper of off-contact printing method printing is carried out the method for deinking and the prescription of the used preparation of deinking.More particularly, the present invention relates to from paper, separate the method for printing ink and used prescription, make its granularity of a kind of particle of printing ink gathering formation of separation be enough to make it from paper, to remove fully.
Background technology
In recent years, the increase of environmental consciousness has stimulated the increase of recycled writing paper to use.Simultaneously, the increase of noncontact copying and printing method is used, and duplicates (for example, xerography), laser printing or inkjet printing as electrographic recording, has increased the difficulty that is run in the paper regenerative process greatly.
For the paper that will recycle, printing ink must be basically, preferably remove fully, so that can make high-quality paper with reuse or secondary stock.Conventional de-inking method is the paper slurrying again with printing, contacts with the paper of slurrying again with containing the water-bearing media of surfactant then, separates printing ink from the fiber of making slurry, thereby removes conventional water base or oil-based ink.Then, remove the printing ink of separation by washing or flotation.
Yet conventional deinking process can not be used for reuse satisfactorily and have the paper of non-contact printing ink.This difficulty is that the composition by non-contact printing ink causes.In general, non-contact printing ink is prepared with the thermoplasticity binding material, during the slurrying and deinking of routine, the particle that this binding material forms is too big so that can not remove by washing or flotation, if but too little again can not be by screening or centrifugal and remove satisfactorily.
Attempted so far if in kind of technology make the printing ink of these polymer-matrixes be gathered into big, fine and close can be by screening or the centrifugal particle of removing, for example, US4,820,379 and 5,102,500 disclose in the presence of polymeric material and dispensable chelating agent, make with the poly(ethylene oxide) additive of alcoxyl end-blocking and duplicate printing ink and assemble.US5,141,598 mixtures that disclose the polyoxy propylene glycol that uses aliphatic petroleum distillate, alkyl phenoxy (ethylidene oxygen) ethanol and ethoxylation carry out deinking to the paper of electrostatic printing.The comprehensive HLB value of this mixture is less than 10, and weight ratio is 6: 1: 3.
Brief summary of the invention
Therefore, the present invention relates to a kind of de-inking method of off-contact printing paper, this method can avoid basically because one or more problems that limitation and shortcoming caused of the present de-inking method that uses.On the one hand, the invention provides a kind of de-inking method, it can separate duplicating or non-contact printing ink and be gathered into granularity from the paper fibre of slurrying again be enough to the particle that can remove from these fibers.This method comprises the steps: that the pulping fibre again that will comprise the off-contact printing material contacts a period of time with additive formulations under a certain temperature, and this temperature and time should be enough to separate printing ink and the printing ink that separates is gathered into its granule size of particle from slurrying paper fibre again should be enough to and they can be removed from fiber.This additive formulations comprises the ethylene oxide/propylene oxide polymer that at least a structural formula I of at least a stone distillate of (1) 85-10% weight and (2) 15-90% weight derives,
X and the Y integer of 1-20 of respectively doing for oneself in the formula, R is for being selected from (a) and (b) or deriveding group (c): (a) be formula R
1-CH
2The fatty alcohol residue of-O-; (b) be formula
Fatty acid residue; (c) be formula
The phenol residue; R wherein
1Be C
1-20Straight or branched, saturated or undersaturated hydrocarbon chain.
The present invention also provides the prescription that is used for implementing this method.This prescription comprises the ethylene oxide/propylene oxide polymer that at least a structural formula I of at least a petroleum distillate of (1) 85-10% weight and (2) 15-90% weight derives,
X and the Y integer of 1-20 of respectively doing for oneself in the formula, R is for being selected from (a) and (b) or deriveding group (c): (a) be formula R
1-CH
2The fatty alcohol residue of-O-; (b) be formula
Fatty acid residue; (c) be formula
The phenol residue; R wherein
1Be C
1-20Straight or branched, saturated or undersaturated hydrocarbon chain.
Detailed description of the invention
Usually, when the waste paper that contains the off-contact printing thing is carried out deinking, in hydrabrusher, handle this paper, obtain again the aqueous slurries of pulping fibre.This paper pulp comprises the about 3-20 in the slurry gross weight usually, often is the paper fibre of the slurrying again of about 4-8% weight.
Additive commonly used comprises surfactant, bleaching agent, brightener, softening agent, defoamer, dispersant and chelating agent in the deinking operation.Also can there be the conventional deinking agent of slurrying again that uses in addition, as the pure and mild phenol ethoxylate of ethoxylation.When paper pulp contained the mixture of off-contact printing paper and conventional contact print paper, the phenol ethoxylate was useful especially.These additives and additive formulations can be before slurrying again during or any time afterwards add in the hydraulic pulping material.Owing to a slurrying very short time of change expense itself, therefore, normally when beginning slurrying operation, these additives are added in the hydrabrusher.
, the paper fibre of slurrying is again contacted with the batching that comprises at least a petroleum distillate and at least a formula I polymer as follows in order from the off-contact printing paper, to remove removal ink according to the present invention.This batching generally includes the petroleum distillate of 10-85% weight, preferred 15-40% weight and 15-90% weight, preferred 60-85% weight, the more preferably formula I of the 65-80% weight ethylene oxide/propylene oxide polymer of deriving.Preferred prescription comprises about 25% petroleum distillate and 75% polymer.
Petroleum distillate is preferably a kind of quite high boiling hydrocarbon fraction of boiling point between about 185-275 ℃.This component contains the aliphatic hydrocarbon that has rudimentary aromatic substance and the mixture of cycloalkane usually.Petroleum distillate with these characteristics can obtain from market, for example, the commodity that VISTA CHEMICAL COMPANY sells VISTALPA-140 (CAS#64742-47-8) by name, boiling point is 187-232 ℃; VISTALPA-210 (CAS#64742-47-8), boiling point are 203-278 ℃; And the ARCOPRIME55 (CAS#8042-47-5) that sells by LYONDELL PETROCHEMICAL COMPANY.
The polymer that uses in de-inking method of the present invention is the ethylene oxide/propylene oxide polymer of deriving.These polymer that can be random or block copolymer are represented by following formula I:
Commercially available formula I polymer has CHEMAX, INC.Product with trade name CHEMALDA-5P8 sale; PPG INDUSTRIES, INC.With the product of trade name MACOL LF110 and MACOLLF120 sale and the product that BASF sells with trade name AFRANILF.
In this polymer, the ratio of ethylene oxide unit and propylene oxide units, X: Y can about 1: 20-20: change in 1 scope.Preferred this ratio is not more than about 1: 1, is more preferably less than about 1: 1, and promptly propylene oxide units will be preponderated.In this polymer architecture, ethylene oxide unit and propylene oxide units can random or block configuration distributions.
Shown in I, deriveding group R is from (a) straight or branched, saturated or undersaturated fatty alcohol, (b) saturated or undersaturated aliphatic carboxylic acid or (c) the phenol residue derive.
The structural formula of fatty alcohol residue (a) is as follows
R
1-CH
2-O-；
The structural formula of aliphatic carboxylic acid residue (b) is
The structural formula of phenol residue (c)
In formula (a) and (b), (c), R
1Be C
1-20Straight or branched, saturated or undersaturated hydrocarbon chain.
When deriveding group R is fatty alcohol residue (a), radicals R
1Be preferably band 1-20 8-14 carbon atom more preferably, or the saturated group of straight chain or side chain.If this group is a side chain, so, 5-10 the carbon atom of having an appointment in the preferably long-chain.
When deriveding group R is aliphatic carboxylic acid residue (b), radicals R
1Be preferably the band 5-10 linear group of 8-20 carbon atom more preferably.At this occasion, R
1Preferably saturated or contain two keys more than a C-C.In a further preferred embodiment, aliphatic carboxylic acid residue (b) is a fatty acid residue.Preferred fatty acid residue comprises oleic acid and linoleic acid.
When deriveding group R was phenol residue (c), the phenol residue can be from the neighbour, or a phenol derived obtain.Preferably to a phenol.R
1Preferably be with 1-30, more preferably the line style radical of saturated aliphatic group of 8-14 carbon atom.
Comprise deriveding group, the molecular weight of formula I polymer is between about 400-8000.Preferably between about 400-2000, best between 600-1400.
In de-inking method of the present invention, water-containing pulp is contacted with additive formulations, and additive concentration and contact time and temperature will be enough to can be from paper fibre to remove removal ink and the printing ink of removing is gathered into is enough to the particle that can they be removed by means known in the art from paper fibre; Described means are preferably screened or centrifugation.For bone dry fiber per ton, the consumption of additive formulations is about 5-30 pound, preferably about 10-20 pound.
As mentioned above, other additive commonly used also can add together with additive formulations of the present invention in the deinking operation, perhaps adds as the part of additive formulations of the present invention.To those skilled in the art, the consumption of these additives commonly used is known in the deinking operation.
In de-inking method of the present invention, at first, contact with additive formulations then, or slurrying and deinking are carried out simultaneously again paper slurrying again.Method for synchronous preferably.In succession or in, all form paper pulp with methods known in the art with footwork.
In hydrabrusher or in other drubber, handle with additive formulations of the present invention and to want the paper of deinking, so that obtain with slurry gross weight about 3-20 that is as the criterion, the aqueous slurries of preferably about 4-8% weight bone dry fiber.This paper pulp preferably with the temperature of additive formulations more than the printing ink softening point, preferred printing ink is clamminess and the temperature when gathering takes place contacts.For example, temperature should be at about 40-100 ℃, and preferably about 65-80 ℃, the best is about 70 ℃.Preferably this paper pulp and additive formulations are at the about 6-13 of PH, and preferably at PH8-11, the best contacts at PH about 11.Those of ordinary skills should be understood that these conditions can change according to the specific composition that is included in one or more printing ink in the given deinking operation.
With the method for fractional steps or basic synchronization method, printing ink can be isolated and be gathered into particle and remove from the fiber of making slurry, in this still preferred synchronous separation and gathering.Finish slurrying under these conditions and from paper, remove removal ink and need handle usually about 5-60 minute.
The ink formulations that uses in off-contact printing (often referring to " toner ") generally includes low molecular weight thermoplastic polymer and pigment, is typically carbon black, although also often use color pigment.Used polymer is for example low-molecular-weight polystyrene, styrene/methacrylic acid ester copolymer, butadiene and polyester normally.Sometimes wax is mixed printing ink to improve their anchor effect.To the major requirement of these polymer normally: (1) their fusing point must be between 120 and 200 ℃; (2) they must be stable during up to about 54 ℃ in temperature; (3) they must fusion on about 150 ℃ of paper; (4) their vitrifying transition temperature (softening point) must be between 65 and 75 ℃.
Therefore, preferably, contacting of paper pulp and additive formulations of the present invention should be carried out in the temperature that the thermoplastic inks binding material is clamminess and ink particle more easily is gathered into sticky particle.The diameter of aggregated particle is preferably at least about 175 microns, more preferably at least about 200 microns.
After slurrying and particle aggregation are finished, the temperature of paper pulp is preferably reduced to below the polymer softening point, preferably reduce to about 55 ℃ or lower.At this moment, the resin particle of gathering is solidified into harder and not sticking state, and the particle of this state is easier to be removed from paper pulp by methods known in the art.Preferably finish this and remove step by screening or centrifugation.Chilling temperature is not vital, makes the thermoplasticity binding material can be cured to enough not sticking states but must be low to moderate.
The present invention will describe by the following examples.These example explanations the present invention, but do not limit the present invention.
Embodiment 1
Utilize additive formulations of the present invention that the electrostatic printing paper is carried out deinking.Each prescription constitutes by the petroleum distillate of following listed as many as 25% weight and the ethylene oxide/propylene oxide polymer of deriving of 75% weight.
Prescription A
The product of-petroleum distillate: VISTALPA-140
-ethylene oxide/propylene oxide the polymer of deriving:
Random
Prescription B
The product of-petroleum distillate: VISTALPA-140
-ethylene oxide/propylene oxide the polymer of deriving:
Block
Prescription C
The product of-petroleum distillate: VISTALPA-140
-ethylene oxide/propylene oxide the polymer of deriving:
Block
Prescription D
The product of-petroleum distillate: VISTALPA-140
-ethylene oxide/propylene oxide the polymer of deriving:
Block
Prescription E
The product of-petroleum distillate: VISTALPA-140
-ethylene oxide/propylene oxide the polymer of deriving:
Block
At PH11.0,70 ℃, the electrostatic printing paper slurry of preparation 4% weight in buck.It is in the about 20 pounds various slurry of slurry per ton that each prescription of A-E is added to concentration.When 70 ℃ are carried out slurrying/deinking and are 30 minutes, then, cool the temperature to 40 ℃ so that the printing ink of assembling/resin particle solidify.Do not have additive formulations simultaneously with test, have only the contrast test of stone distillate.
Then, with in water with the slurry of 0.5% concentration by 5 purposes sieve, by 10 purposes sieve, sieve washing the fibre by 20 purposes at last, again to remove the ink particle of gathering.
(THOMAS OPTICAL IMAGE ANALYZER) measures the resin particle size of all tests by Thomas's optical image analyzer.Found that, use prescription of the present invention, can obtain particle all the time, make these particles be easy to remove by screening greater than 200 microns sizes.On the contrary, when not using prescription of the present invention, will produce in a large number less than 200 microns particle, can not be by screening out.These the results are shown in Table I
Table I
| Prescription | Medium particle diameter | Minimum grain size | Particle size range |
| A B C D E only contains the petroleum distillate Comparative Examples | 1300 micron 1,200 1,400 1,200 1400＜100＜100 | 250 micron 275 220 320 280＜50＜50 | ????250-2100 ????275-1700 ????220-2300 ????320-1900 ????280-1650 ????＜50-350 ????＜50-350 |
Utilize conventional laboratory papermaking process, the every batch of reclaimed fibre that is recovered in this example is made handmade paper.With the brightness of every page of GE brightness instrument measurement, as quality evaluation.
Sample A all demonstrates paper brightness between 80 and 83 to each part of E, and this shows almost do not have or do not have printing ink to stay in this paper.On the contrary, adopt when wherein not having the contrast test of additive formulations of the present invention, brightness value is 76.3, and this shows, stay printing ink in the paper will be significantly more than the printing ink of Sample A to the E.The brightness that only contains the prescription of petroleum distillate is 76.5.The brightness of initial sheet when its reset condition is 84.5.Therefore, the present invention removes removal ink by maximum ground and successfully electro-photographic paper is returned to state near its original whiteness.
Example II
Use step and the additive formulations identical, a collection of laser stamping paper is carried out deinking with routine I.By screening the particle diameter that removes removal ink/resin particle and measure them.The results are shown in the Table II.
Table II
| Prescription | Medium particle diameter (micron) | Minimum grain size (micron) | Particle size range (micron) |
| A B C D E only contains the petroleum distillate Comparative Examples | ????1000 ????900 ????1100 ????1000 ????800 ????＜100 ????＜100 | ????230 ????270 ????240 ????250 ????240 ????＜50 ????＜50 | ????230-2200 ????270-1500 ????240-1900 ????250-1700 ????240-1200 ????＜50-350 ????＜50-350 |
The handmade paper brightness of the fiber of deinking is from about 77.8 to 80.1 according to the present invention.The brightness of Comparative Examples is 75.4, and the brightness of initial sheet is 84.5 during reset condition, and using the brightness of the prescription that only contains petroleum distillate is 76.5.
Claims (22)
1. remove the de-inking method of removal ink in the off-contact printing paper, this method comprises the steps, the pulping fibre again that will comprise the off-contact printing material contacts a period of time with additive formulations under a certain temperature, this temperature and time should be enough to separate printing ink and the printing ink that separates is gathered into granularity from slurrying paper fibre again be enough to the particle that they can be removed from fiber, this additive formulations comprises the ethylene oxide/propylene oxide polymer that at least a structural formula I of at least a petroleum distillate of (1) 85-10% weight and (2) 15-90% weight derives
X and the Y integer of 1-20 of respectively doing for oneself in the formula, R is for being selected from (a) and (b) or deriveding group (c): (a) be formula R
1-CH
2The fatty alcohol residue of-O-; (b) be formula
Fatty acid residue; (c) be formula
The phenol residue; R wherein
1Be C
1-20Straight or branched, saturated or undersaturated hydrocarbon chain.
2. according to the method for claim 1, also comprise the steps: to reduce temperature so that the ink particle of assembling becomes solid and not sticking, and from described fiber, remove the ink particle of gathering.
3. according to the method for claim 2, wherein contact procedure comprises, the first step be from fiber, separate printing ink then second step printing ink that will separate be gathered into granularity be enough to the particle that they can be removed from fiber.
4. according to the method for claim 2, wherein contact procedure is synchronously separated printing ink and the printing ink that will separate basically and is gathered into granularity is enough to the particle that they can be removed from fiber from fiber.
5. according to the method for claim 2, wherein remove the printing ink of gathering by screening.
6. according to the method for claim 2, wherein remove the printing ink of gathering by centrifugation.
7. according to the method for claim 2, wherein, the ratio of the ethylene oxide unit among the formula I and propylene oxide units is less than 1 to 1.
8. according to the method for claim 2, wherein, contact procedure is carried out at 65-80 ℃.
9. method according to Claim 8, wherein, the ratio of the ethylene oxide unit among the formula I and propylene oxide units is less than 1 to 1.
10. according to the method for claim 9, wherein the consumption of additive formulations is about 5 to 30 pounds an of bone dry fiber per ton.
11. according to the method for claim 2, wherein the consumption of additive formulations is about 5 to 30 pounds an of bone dry fiber per ton.
12., wherein remove the printing ink of gathering by screening according to the method for claim 11.
13., wherein remove the printing ink of gathering by centrifugation according to the method for claim 11.
14. a prescription that is used to contain the paper deinking of off-contact printing material comprises: the ethylene oxide/propylene oxide polymer that at least a structural formula I of at least a petroleum distillate of (1) 85-10% weight and (2) 15-90% weight derives,
X and the Y integer of 1-20 of respectively doing for oneself in the formula, R is for being selected from (a) and (b) or deriveding group (c): (a) be formula R
1-CH
2The fatty alcohol residue of-O-; (b) be formula
Fatty acid residue; (c) be formula
The phenol residue; R wherein
1Be C
1-20Straight or branched, saturated or undersaturated hydrocarbon chain.
15. according to the prescription of claim 14, wherein the ethylene oxide unit in the polymer and the ratio of propylene oxide units are less than 1 to 1.
16. according to the prescription of claim 14, wherein, petroleum distillate be boiling point between about 185-275 ℃ aliphatic hydrocarbon and the mixture of cycloalkane.
17. according to the prescription of claim 16, wherein, petroleum distillate is the product of VISTALPA-140.
18. according to the prescription of claim 16, wherein, the ethylene oxide/propylene oxide polymer of deriving is random
19. according to the prescription of claim 16, wherein, the ethylene oxide/propylene oxide polymer of deriving is a block
20. according to the prescription of claim 16, wherein, the ethylene oxide/propylene oxide polymer of deriving is a block
21. according to the prescription of claim 16, wherein, the ethylene oxide/propylene oxide polymer of deriving is a block
22. according to the prescription of claim 16, wherein, the ethylene oxide/propylene oxide polymer of deriving is a block
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20742394A | 1994-03-08 | 1994-03-08 | |
| US08/207,423 | 1994-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1143399A true CN1143399A (en) | 1997-02-19 |
Family
ID=22770491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95191972A Pending CN1143399A (en) | 1994-03-08 | 1995-03-08 | Method of agglomerating printing ink and formulations for use therein |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0749506A1 (en) |
| JP (1) | JPH10500739A (en) |
| CN (1) | CN1143399A (en) |
| AU (1) | AU3104895A (en) |
| BR (1) | BR9507406A (en) |
| CA (1) | CA2185007A1 (en) |
| CZ (1) | CZ260396A3 (en) |
| FI (1) | FI963483A (en) |
| MX (1) | MX9603814A (en) |
| NO (1) | NO963747L (en) |
| NZ (1) | NZ282606A (en) |
| SK (1) | SK113096A3 (en) |
| WO (1) | WO1995024526A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532981A (en) * | 2012-02-10 | 2012-07-04 | 南京博超科技有限责任公司 | Polyether waste paper deinking agent |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501373A (en) * | 1966-11-04 | 1970-03-17 | Garden State Paper Co Inc | De-inking waste printed cellulosic stock |
| IT1134201B (en) * | 1979-11-13 | 1986-08-13 | Economics Lab | SECONDARY FIBER DEK INKING METHODS |
| JPS59130400A (en) * | 1983-01-17 | 1984-07-26 | 花王株式会社 | Deinking agent used in regenerating old paper |
| NZ242280A (en) * | 1991-04-25 | 1994-02-25 | Betz Int | De-inking electrostatically printed paper using a surfactant in an aqueous |
-
1995
- 1995-03-08 EP EP19950912711 patent/EP0749506A1/en not_active Withdrawn
- 1995-03-08 SK SK1130-96A patent/SK113096A3/en unknown
- 1995-03-08 NZ NZ282606A patent/NZ282606A/en unknown
- 1995-03-08 MX MX9603814A patent/MX9603814A/en unknown
- 1995-03-08 CZ CZ962603A patent/CZ260396A3/en unknown
- 1995-03-08 WO PCT/US1995/002670 patent/WO1995024526A1/en not_active Application Discontinuation
- 1995-03-08 JP JP52354095A patent/JPH10500739A/en active Pending
- 1995-03-08 CA CA 2185007 patent/CA2185007A1/en not_active Abandoned
- 1995-03-08 AU AU31048/95A patent/AU3104895A/en not_active Abandoned
- 1995-03-08 CN CN95191972A patent/CN1143399A/en active Pending
- 1995-03-08 BR BR9507406A patent/BR9507406A/en not_active Application Discontinuation
-
1996
- 1996-09-05 FI FI963483A patent/FI963483A/en unknown
- 1996-09-06 NO NO963747A patent/NO963747L/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532981A (en) * | 2012-02-10 | 2012-07-04 | 南京博超科技有限责任公司 | Polyether waste paper deinking agent |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9507406A (en) | 1997-09-02 |
| SK113096A3 (en) | 1997-02-05 |
| FI963483A0 (en) | 1996-09-05 |
| NO963747D0 (en) | 1996-09-06 |
| NO963747L (en) | 1996-09-06 |
| MX9603814A (en) | 1997-03-29 |
| WO1995024526A1 (en) | 1995-09-14 |
| EP0749506A1 (en) | 1996-12-27 |
| CA2185007A1 (en) | 1995-09-14 |
| JPH10500739A (en) | 1998-01-20 |
| NZ282606A (en) | 1998-09-24 |
| FI963483A (en) | 1996-09-05 |
| AU3104895A (en) | 1995-09-25 |
| CZ260396A3 (en) | 1997-02-12 |
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