CN103255676B - Cypres and application thereof - Google Patents
Cypres and application thereof Download PDFInfo
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- CN103255676B CN103255676B CN201310120028.4A CN201310120028A CN103255676B CN 103255676 B CN103255676 B CN 103255676B CN 201310120028 A CN201310120028 A CN 201310120028A CN 103255676 B CN103255676 B CN 103255676B
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Abstract
The invention discloses a kind of Cypres, comprise the component of following percentage by weight: cm-chitosan 30%-40%, olefin copolymer emulsion 55%-58%, sodium carboxymethylcellulose 1%-10%, potassium peroxydisulfate 1%-5%, each component percentages sum is 100%.Use Cypres of the present invention to be applied to papermaking coating, after fluorescent whitening agent is added on surface, can reduce and partially or completely cancel fluorescent whitening agent consumption in slurry, not affect Paper White Degree and degree of sizing.The object reaching clean paper making system, reduce environmental pollution, reduce production cost.
Description
Technical field
The present invention relates to a kind of Cypres, particularly relate to the Cypres that can reduce fluorescent whitening agent consumption in slurry.
Background technology
Current, domestic each papermaking enterprise, in order to pursue the high whiteness of paper, adds a large amount of fluorescent whitening agents, several kilograms at least, tens kilograms at most in slurry.In China's paper industry, cultural paper, the productions such as printing paper and paperboard all with the addition of fluorescent whitening agent substantially, and according to the concerned countries food safety management such as " food additives use sanitary standard " and " food containers, packaging material additive sanitary standard " regulation, fluorescent whitening agent is forbidden to use in food and food-related products processing.
Fluorescent whitening agent is a kind of fluorescent dye, or is called white dye, is also a kind of organic compound of complexity.Its characteristic to excite incident ray to produce fluorescence, makes contaminated material obtain the sparkling effect of similar fluorite, and the material that naked eyes are seen is very white, reaches the effect brightened.
The widely used fluorescent whitening agent of papermaking is two triazine amino stilbene derivatives, has two sulfonic acid, tetrasulfonic acid and six sulfonic acid three types.Two triazine amino-stilbene class brightening agent is that in a kind of structure, existing phenyl has again sulfonic organic compound.
Clinical medicine experiment proves, fluorescent whitening agent is a kind of harmful chemicals, combines once enter human body with human body protein, is difficult to get rid of external by normal metabolism.Meanwhile, fluorescent whitening agent can weaken the ability of wound healing, as excessive in put aside in human body, can increase one's load, bring out cytometaplasia, there is potential carcinogenic risk to liver.
Fluorescent whitening agent also can produce harm to copy paper.Because paper pulp is elecrtonegativity, so the positiveization is the development trend of copy paper auxiliary agent always, good wet end chemistry require online paper pulp have close to zero electrical, but a large amount of cationic demand using fluorescent whitening agent significantly can increase paper pulp, other cationic auxiliaries of strong interference, the particularly effect of retention agent, causes the deleterious of these auxiliary agents or consumption to rise.Sulfonic group is more, and the elecrtonegativity of fluorescent whitening agent is stronger.In paper pulp, add fluorescent whitening agent, the elecrtonegativity of paper pulp significantly rises.Sulfonic group is more, affects larger.Because of its elecrtonegativity, retention and drainage effect all effected.Fluorescent whitening agent is to the harmful effect of papermaking: wet end adds > top sizing.
In slurry, add fluorescent whitening agent retention lower, generally only have about 30%, weak effect, consumption is large, is lost in plain boiled water, can to environmental danger.
Add fluorescent whitening agent retention in top sizing close to 100%, but general Cypres and fluorescent whitening agent compatibility bad, namely affect whitening effect after mixing with fluorescent whitening agent, affect sizing efficiency again.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Cypres good with fluorescent whitening agent compatibility, to overcome the above-mentioned defect that prior art exists.
For solving the problems of the technologies described above, Cypres of the present invention, comprises the component of following percentage by weight:
Each component percentages sum is 100%.
Described cm-chitosan, comprises one or more in O-CMC, N-cm-chitosan and CMC;
Described cm-chitosan is white or yellow powder, preferred content >=98.0%;
Described olefin copolymer emulsion, solid content is 15%-30%, and 25 DEG C of viscosity are≤50mPa.s, pH value 3-5; Described olefin copolymer emulsion refers to the multi-copolymer emulsion of styrene, esters of acrylic acid, acrylic compounds;
Described sodium carboxymethylcellulose is white or oyster white fibrous powder or particle, moisture≤8.0%.
Described Cypres preferably adds water and is made into solid content is 18-25%, pH value 2.5-4.5, viscosity≤100mPa.s.
Present invention also offers the application of described Cypres in papermaking coating, preferable amount is that absolute dried paper pulp per ton adds 1-5 kilogram.
Use novel surface sizing agent of the present invention, after fluorescent whitening agent is added on surface, can reduce and partially or completely cancel fluorescent whitening agent consumption in slurry, not affect Paper White Degree and degree of sizing.The object reaching clean paper making system, reduce environmental pollution, reduce production cost.
The present invention is by using this novel surface sizing agent, effectively can reduce the interior brightening agent consumption of slurry or fully phase out fluorescent whitening agent in slurry, improve the utilization rate of the fluorescent whitening agent in paper making process, reduce the impact of fluorescent whitening agent environmental pollution, harm and paper manufacturing systems, reduce papermaking enterprise cost.The present invention fills a prescription uniqueness, and technique is simple, and application prospect is good.
Detailed description of the invention
Embodiment 1
The preparation of 1.1 Cypres
Add cm-chitosan 30% in a kettle., solid content is the olefin copolymer emulsion 55% of 25%, sodium carboxymethylcellulose 10%, potassium peroxydisulfate 5%, adds water and adjust solid content is 20% after reaction.
1.2 experiment condition
Laboratory apparatus: 0-200g balance, 1-100 DEG C of water bath with thermostatic control, electric stirring, laboratory room small-sized sizing applicator, examines vigorous Surface absorption weight measuring instrument;
Surface sizing starch: applying glue oxidized starch;
Top sizing body paper: electro-photographic paper, quantitative 70g/m
2;
Cypres: Cypres prepared by embodiment 1;
Contrast sample: Cypres disclosed in Chinese patent CN1749480A embodiment 1.
1.3 experimentations: applying glue oxidized starch stirs and is warming up to 90-95 DEG C, oxidized starch concentration 10%, are adjusted to 65 DEG C of constant temperature after insulation gelatinization 30min, for subsequent use.Use above-mentioned oxidized starch solution and Cypres, proportioning is: starch: Cypres: fluorescent whitening agent=50:3; 4(is dry/wet).Use above-mentioned sizing material, on laboratory room small-sized sizing applicator, carry out applying glue respectively with identical resin added, the pattern after applying glue carries out drying with identical temperature, time, detects Cobb value, surface strength, whiteness after machine and slaking under pattern.
1.4 experimental datas:
1.5 experiment conclusion
Compared with contrast sample, novel surface application of sizing agents effect is better, has stronger application advantage.
Embodiment 2
2.1 effective preparations reducing the novel surface sizing agent of fluorescent whitening agent consumption in slurry
Add cm-chitosan 40% in a kettle., solid content is the olefin copolymer emulsion 58% of 30%, sodium carboxymethylcellulose 1%, potassium peroxydisulfate 1%, adds water and adjust solid content is 20% after reaction.
2.2 experiment condition
Paper machine type: 7280 long mesh paper making machines;
Paper machine speed: 1230m/min;
Ph test paper ph kind: 75g/m
2wood-free paper;
Paper machine output: 41.00t/h;
Laboratory sample: Cypres prepared by embodiment 2
Contrast sample: the AKD that sizing agent disclosed in Chinese patent CN101575322A embodiment and Shouguang Zhong Hui Chemical Industry Science Co., Ltd produce improves the agent of synergist 2508 mixing application.
2.3 experimentations:
Former technique: internal sizing agent ASA, consumption 0.9kg/t paper, Cypres in being intelligent AKD improve sizing agent disclosed in synergist and Chinese patent CN101575322A embodiment by the composite sizing agent of 1:8, consumption 4.70-4.90kg/t paper; In slurry, fluorescent whitening agent addition is 8kg/ ton paper.
Experimental technique: internal sizing agent ASA, consumption 0.9kg/t paper, Cypres is embodiment 2 Cypres, consumption 3-4kg/t paper, and top sizing fluorescent whitening agent is 3kg/ ton paper; In slurry, fluorescent whitening agent addition is 3kg/ ton paper.
2.4 experimental data
2.5 experiment conclusion
After using Cypres of the present invention, fluorescent whitening agent addition in slurry is reduced 5kg/ ton paper, in top sizing, adds 3kg/ ton optical brighteners for paper, sizing efficiency and blending surface sizing agent close.Improve copy paper environment, reduce production cost.
Embodiment 3
The preparation of 3.1 Cypres
Add cm-chitosan 35% in a kettle., solid content is the olefin copolymer emulsion 57% of 30%, sodium carboxymethylcellulose 5%, potassium peroxydisulfate 3%, adds water and adjust solid content is 20% after reaction.
3.2 experiment condition
Paper machine type: 1760 long mesh paper making machines;
Paper machine speed: 172m/min;
Ph test paper ph kind: 80g/m
2electro-photographic paper;
Paper machine output: 25 tons/day;
Laboratory sample: embodiment 3 Cypres
Contrast sample: the AKD that sizing agent disclosed in Chinese patent CN101575322A embodiment and Shouguang Zhong Hui Chemical Industry Science Co., Ltd produce improves the agent of synergist 2508 mixing application.
3.3 experimentation
Former technique: internal sizing agent AKD, consumption 15kg/t paper, Cypres consumption 4kg/t paper; In slurry, fluorescent whitening agent addition is 12kg/ ton paper.
Experimental technique: internal sizing agent AKD, consumption 15kg/t paper, Cypres is novel surface sizing agent, consumption 3.5kg/t paper, and top sizing fluorescent whitening agent is 8/t paper; No longer fluorescent whitening agent is added in slurry.
3.4 experimental data
3.5 experiment conclusion
After use can reduce the novel surface sizing agent of fluorescent whitening agent consumption in slurry, all cancelled by fluorescent whitening agent addition in slurry, add 8kg/ ton optical brighteners for paper in top sizing, sizing efficiency is close with contrast sample.Improve copy paper environment, reduce production cost.
Claims (3)
1. a Cypres, is characterized in that, comprises the component of following percentage by weight:
Described cm-chitosan is selected from least one in O-CMC, N-cm-chitosan, CMC; The solid content of described olefin copolymer emulsion is 15%-30%, and 25 DEG C of viscosity are≤50mPa.s, pH value 3-5; Described olefin copolymer emulsion refers to the multi-copolymer emulsion of styrene, esters of acrylic acid, acrylic compounds.
2. Cypres according to claim 1, is characterized in that, described Cypres adds water and is made into solid content is 18-25%, pH value 2.5-4.5, viscosity≤100mPa.s.
3. the application of Cypres in papermaking coating as claimed in claim 1 or 2, is characterized in that, adds 1-5 kilogram of described Cypres in absolute dried paper pulp per ton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120028.4A CN103255676B (en) | 2013-04-08 | 2013-04-08 | Cypres and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120028.4A CN103255676B (en) | 2013-04-08 | 2013-04-08 | Cypres and application thereof |
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| CN103255676A CN103255676A (en) | 2013-08-21 |
| CN103255676B true CN103255676B (en) | 2015-10-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233904A (en) * | 2014-09-23 | 2014-12-24 | 济南科纳信息科技有限公司 | Paper prepared through carboxymethylcellulose modified sodium silicate pulp and preparation method thereof |
| CN110409217A (en) * | 2018-04-27 | 2019-11-05 | 上海东升新材料有限公司 | A kind of strong paper surface sizing agent of high table |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027092A (en) * | 1998-07-01 | 2000-01-25 | Oji Paper Co Ltd | Neutralized paper |
| CN101974867A (en) * | 2010-08-03 | 2011-02-16 | 陕西科技大学 | Cultural paper surface sizing agent |
| CN102627728A (en) * | 2012-03-28 | 2012-08-08 | 陕西科技大学 | Preparation method for cationic chitosan graft copolymer surface sizing agent |
-
2013
- 2013-04-08 CN CN201310120028.4A patent/CN103255676B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027092A (en) * | 1998-07-01 | 2000-01-25 | Oji Paper Co Ltd | Neutralized paper |
| CN101974867A (en) * | 2010-08-03 | 2011-02-16 | 陕西科技大学 | Cultural paper surface sizing agent |
| CN102627728A (en) * | 2012-03-28 | 2012-08-08 | 陕西科技大学 | Preparation method for cationic chitosan graft copolymer surface sizing agent |
Non-Patent Citations (1)
| Title |
|---|
| 张光华等.壳聚糖接枝苯丙共聚物乳液的制备和表征.《中国造纸学报》.2012,第27卷(第1期),23-27. * |
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Address after: 200233 Shanghai, Tianlin Road, No. 388, building 701, room 1, Applicant after: Shanghai Dongsheng new material Co., Ltd. Applicant after: Dssun New Material (Shandong) Co., Ltd. Address before: 200233 Shanghai, Tianlin Road, No. 388, building 701, room 1, Applicant before: Shanghai Dongsheng new material Co., Ltd. Applicant before: Yanzhou Dongsheng Fine Chemical Co., Ltd. |
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