CN101638868A - Polyether defoamer - Google Patents
Polyether defoamer Download PDFInfo
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- CN101638868A CN101638868A CN200810012581A CN200810012581A CN101638868A CN 101638868 A CN101638868 A CN 101638868A CN 200810012581 A CN200810012581 A CN 200810012581A CN 200810012581 A CN200810012581 A CN 200810012581A CN 101638868 A CN101638868 A CN 101638868A
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- polyether defoamer
- paper
- lecithin
- magnesium hydroxide
- polyglycol ether
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- Degasification And Air Bubble Elimination (AREA)
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Abstract
The invention relates to a polyether defoamer suitable for papermaking processes such as pulping, papermaking, coating and the like. The polyether defoamer is prepared from the following compositions:polyglycol ether, epoxy ethane, butyl alcohol, lecithin and magnesium hydroxide of which the weight ratio is 80-160:60-120:20-50:30-65:40-70. The polyether defoamer has good defoaming capacity and foam inhibiting capacity, and strong emulsifying, dispersing and permeating capacities, can be self-emulsified in a water system, has lasting defoaming effect, no toxicity, cheap price, and no side effect on the cohesiveness, dispersity and printing adaptability of coatings, and can improve the glossiness, picking speed and lubricating performance of paper.
Description
Technical field
The present invention relates to a kind of defoamer, relate in particular to a kind of polyether antifoam agent, be applicable to slurrying, copy papermaking operations such as paper and coating.
Background technology
The consumption of defoamer in paper industry is little, but its effect can not be ignored.In whole pulp and paper industry process, sequence of operations behind the boiling blowing, as washing, screening, bleaching, concentrate, pulp feeding system, top sizing, coating, black liquor recovery etc., all be subjected to the influence of foam to some extent, disturb ordinary production, paper quality is descended, when serious production can't be gone on.The removing method of foam mainly contains chemical method, physics method and Mechanical Method.Chemistry froth breaking method is exactly to add chemical substance (defoamer) in process of production to eliminate foam; The utilization of physical defoaming method is left standstill, is heated or reduce pressure and eliminates foam; The mechanical defoaming method adopts mechanical force to make lather collapse exactly.Physics method and Mechanical Method are simple to operate, but passive, only take stopgap measures and do not effect a permanent cure, and effect is undesirable.Using the most widely used at present is chemical froth breaking method, promptly uses the formation of foam in the defoamer control paper-making process and abolishes established foam.
In pulping process, owing to contain natural materials such as aliphatic acid, resin acid in the pulping raw material, foamers such as generation fatty acid soaps, the resin acid soaps of reacting with chemicalss such as the caustic soda that adds, akali sulphide, add the steady bubble effect of polymer substances such as cellulose, when the stream of slurry send and mixes, bring a large amount of air into slurry system and just formed a large amount of stable foams, bring very big difficulty for subsequent handling such as washing, conveying, bleaching etc., cause laitance and pulp quality is reduced.The factory that has adopts " clear water is pressed bubble ", and this method is to certain effect that defoams, but the de-bubble effect is unsatisfactory.Pulping process washs foaming such as fatty acid soaps that the black liquor that gets off also contains high concentration, resin acid soaps and surely steeps material, is handled easily and improves the paper pulp alkali recovery, also must carry out defoaming treatment to black liquor.
In the slip of machine hand's preface, also contain to the pulping process slip in similar foaming and steady bubble material, in operation also can entrained air and produce foam, the existence of foam has a significant impact paper, make that degree of sizing is poor, the cross direction ration homogeneity is poor, paper spot, diaphanous spot and small holes etc. occur, even causes disconnected paper.In addition, produce a large amount of foams in the paper plain boiled water, also should add defoamer and get rid of, to improve the rate of recovery of paper pulp if copy.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, through optimization of C design, make meticulously, a kind of polyether antifoam agent is provided, solved the froth breaking of defoamer in the prior art and pressed down the relatively poor problem of bubble effect, and cost is low, the scope of application is extensive.
Technical scheme of the present invention is as follows:
It is formulated by weight by following compositions, polyglycol ether: oxirane: butanols: lecithin: magnesium hydroxide=80-160: 60-120: 20-50: 30-65: 40-70.
The preferred weight ratio of raw material of the present invention is polyglycol ether: oxirane: butanols: lecithin: magnesium hydroxide=100: 95: 40: 45: 55.
Advantage of the present invention and beneficial effect are as follows:
The present invention has good froth breaking ability and presses down the bubble ability, stronger emulsification, dispersion and penetrating power are arranged, can be in aqueous systems self-emulsifying, good stability, have lasting defoaming effect, nontoxic, low price, caking property, dispersiveness and printing adaptability to coating are without any side effects, can improve glossiness, gigging speed and the greasy property of paper.
The specific embodiment
Embodiment 1
The present invention is formed by weight configuration by following composition:
Polyglycol ether: oxirane: butanols: lecithin: magnesium hydroxide=100: 95: 40: 45: 55.
Embodiment 2
It is to form polyglycol ether by following composition by weight configuration: oxirane: butanols: lecithin: magnesium hydroxide=80: 60: 20: 30: 40.
Embodiment 3
It is to form polyglycol ether by following composition by weight configuration: oxirane: butanols: lecithin: magnesium hydroxide=160: 120: 50: 65: 70.
Embodiment 4
It is to form polyglycol ether by following composition by weight configuration: oxirane: butanols: lecithin: magnesium hydroxide=80: 120: 50: 30: 40.
Claims (2)
1, a kind of polyether antifoam agent is characterized in that by following compositions by weight formulated polyglycol ether: oxirane: butanols: lecithin: magnesium hydroxide=80-160: 60-120: 20-50: 30-65: 40-70.
2, polyether antifoam agent according to claim 1 is characterized in that the weight ratio of above-mentioned each raw material is polyglycol ether: oxirane: butanols: lecithin: magnesium hydroxide=100: 95: 40: 45: 55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012581A CN101638868A (en) | 2008-08-01 | 2008-08-01 | Polyether defoamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012581A CN101638868A (en) | 2008-08-01 | 2008-08-01 | Polyether defoamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101638868A true CN101638868A (en) | 2010-02-03 |
Family
ID=41614029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810012581A Pending CN101638868A (en) | 2008-08-01 | 2008-08-01 | Polyether defoamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101638868A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638138A (en) * | 2016-12-30 | 2017-05-10 | 东莞玖龙纸业有限公司 | Defoaming agent for papermaking and application method of defoaming agent |
| CN106807123A (en) * | 2016-12-28 | 2017-06-09 | 广东中联邦精细化工有限公司 | A kind of foam inhibitor and preparation method thereof |
| CN112316496A (en) * | 2020-09-12 | 2021-02-05 | 万华化学集团股份有限公司 | Compound PVC defoaming agent and preparation method thereof |
| CN112386961A (en) * | 2020-11-27 | 2021-02-23 | 荆晓东 | Polyether defoaming agent and preparation method thereof |
-
2008
- 2008-08-01 CN CN200810012581A patent/CN101638868A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807123A (en) * | 2016-12-28 | 2017-06-09 | 广东中联邦精细化工有限公司 | A kind of foam inhibitor and preparation method thereof |
| CN106638138A (en) * | 2016-12-30 | 2017-05-10 | 东莞玖龙纸业有限公司 | Defoaming agent for papermaking and application method of defoaming agent |
| CN112316496A (en) * | 2020-09-12 | 2021-02-05 | 万华化学集团股份有限公司 | Compound PVC defoaming agent and preparation method thereof |
| CN112386961A (en) * | 2020-11-27 | 2021-02-23 | 荆晓东 | Polyether defoaming agent and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100203 |