CN108951285A - A kind of preparation method of Neutral Papermaking polymeric material - Google Patents
A kind of preparation method of Neutral Papermaking polymeric material Download PDFInfo
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- CN108951285A CN108951285A CN201810866223.4A CN201810866223A CN108951285A CN 108951285 A CN108951285 A CN 108951285A CN 201810866223 A CN201810866223 A CN 201810866223A CN 108951285 A CN108951285 A CN 108951285A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to paper making additive preparation fields, particularly with regard to a kind of preparation method of Neutral Papermaking polymeric material；A kind of preparation method of Neutral Papermaking polymeric material disclosed in the method for the present invention, a process for preparing a kind of alkyl ketene dimers, and it is used to prepare modified polyether dihydric alcohol, then with the acetone soln that catalyst is added dropwise after modified polyether dihydric alcohol and methyl diphenylene diisocyanate melting uniformly, chain extender is added after reaction, then plus as in high-speed stirred aqueous polyurethane neutral sizing agent emulsion is made in purified water.The use of the neutral sizing agent can greatly reduce the chemical attack of mechanical equipment, reduce disconnected paper phenomenon, shorten the downtime of paper machine, improve paper drying property, and quickening is manufactured paper with pulp speed, to can also improve the production capacity of paper.
Description
Technical field
The present invention relates to paper making additive preparation fields, particularly with regard to a kind of preparation method of Neutral Papermaking polymeric material.
Background technique
In order to guarantee that paper has certain water repelling property and surface strength, most paper and cardboard are required at sizing
Reason, the sizing agent of early stage are gum rosin, full for the intensity, printing effect and longer pot-life, the people that meet better paper
It is early that constantly sizing agent is improved.
CN101068986A discloses a kind of stable aqueous dispersions comprising reactive sizing agent, is based on reactive sizing agent
5-100 weight % has at least the substantially linear polymer with nitrogen of 3mmol/g basic nitrogen atom and 1-50 weight % degree of substitution
The paper gluing agents of at least 0.05 cationic starch.The sizing efficiency and stable viscosity that the paper gluing agents have had.
CN87104680A discloses a kind of sizing agent, it at least has automatic emulsifying performance, can keep in a long time steady
It is fixed while still effective in low concentration.Its active constituent is one or more backbone olefins amber acid partial esters classes, and sizing agent is also
Contain acid catalyst.
CN103628355A discloses a kind of paper grade (stock) surface of solids sizing agent, the component and its parts by weight of sizing agent
Than as follows: 78-90 parts of ferrous sulfate；5-20 parts of aluminum sulfate；1-5 parts of maltodextrin；2-8 parts of sodium sulphate.The invention preparation method
Simply, cost is relatively low and its sizing efficiency is good, and 30% amount of starch, water-resistance: 25g/m can be replaced by effectively reducing starch dosage2,
Ring crush intensity index: 8Nm/g.
Gum rosin and the above invention are all a kind of acid glue systems, and pH value can bring the corruption of pipeline in 4-6 or so
The problems such as pollution of equipment life, increase energy loss and environment, is shortened in erosion.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of preparation methods of Neutral Papermaking polymeric material.
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, the methyl diphenylene diisocyanate of 75-85 parts of modified polyether dihydric alcohols and 40-55 part is added
It in reaction kettle, is then protected using high pure nitrogen, control temperature in the kettle is 60-80 DEG C, under agitation drop after melting uniformly
Add the 10-15 parts of acetone solns containing 0.05-0.35 parts of catalyst into reaction kettle, adds 0.1-0.7 parts of 5- boric acid frequencies
That alcohol ester indol-2-one, 0.05-0.5 parts of 3,6- carbazole dimethyl dicarboxylates, 0.01-0.2 parts of 6- amino -2,3- indane -
1- ketone, 0.05-0.2 parts of the bicyclic oxazolidine of poly- methylene oxygroup, 0.01-0.2 parts of polyvinyl imidazole quinoline acetate, reaction
80-150min；Then 30-40 DEG C is cooled to, 2-8 parts of chain extender is added, 45-90min is stirred to react, then by 400-600
The purified water of part is added in reaction kettle under high velocity agitation, and a kind of neutrality can be obtained in high speed dispersion 60-180min
Paper grade (stock) polymeric material.A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 90-110 parts of stearic acid, 50-70 parts of thionyl chloride and 180-250 parts of toluene are added anti-
It answers in kettle, then temperature control to 30-50 DEG C, reactant melting is gradually warming up to 60-80 DEG C, reacts 120-150min；Then to anti-
50-60 parts of triethylamine of addition and 0.5-1.5 parts of triethylamine hydrochloride, temperature control in kettle is answered to be stirred to react 1- to 40-60 DEG C
Then 5h is filtered, 200-400 parts of polyether Glycols are added into filtrate, keep the temperature of reaction solution at 80-100 DEG C, stir
3-7h is reacted, then solvent evaporated, can be obtained a kind of modified polyether dihydric alcohol.
The catalyst is Bis(lauroyloxy)dioctyltin or di-n-butyltin dilaurate or tetra-n-butyl tin.
The chain extender is 1,4- butanediol or 1,6-HD or ethylene glycol.
The modified polyether dihydric alcohol average molecular weight is 1000-3000.
A kind of preparation method of Neutral Papermaking polymeric material disclosed in the method for the present invention, a process for preparing a kind of alkyl
Ketene dimer, and be used to prepare modified polyether dihydric alcohol, then use modified polyether dihydric alcohol and diphenylmethane diisocyanate
Ester has prepared aqueous polyurethane neutral sizing agent emulsion.The use of the neutral sizing agent can greatly reduce mechanical equipment
Chemical attack, reduce disconnected paper phenomenon, shorten the downtime of paper machine, improve paper drying property, quickening is manufactured paper with pulp speed, thus
The production capacity of paper can be improved.
Specific embodiment
The invention is described further below by specific embodiment:
Embodiment 1
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, reaction kettle is added in 80 parts of modified polyether dihydric alcohol and 45 parts of methyl diphenylene diisocyanate
In, it is then protected using high pure nitrogen, control temperature in the kettle is 70 DEG C, is added dropwise 13 parts after melting uniformly under agitation and contains
The acetone soln of 0.15 part of catalyst adds 0.3 part of 5- boric acid pinacol ester indol-2-one, 0.1 part 3 into reaction kettle,
6- carbazole dimethyl dicarboxylate, 0.05 part of 6- amino -2,3- dihydro 1-Indanone, 0.08 part of the poly- bicyclic oxazole of methylene oxygroup
Alkane, 0.1 part of polyvinyl imidazole quinoline acetate, reaction 110min；Then 35 DEG C are cooled to, 5 parts of chain extender, stirring is added
70min is reacted, is then added to 500 parts of purified water in reaction kettle under high velocity agitation, high speed dispersion 120min can be obtained
To a kind of Neutral Papermaking polymeric material.
A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 100 parts of stearic acid, 60 parts of thionyl chloride and 220 parts of toluene are added in reaction kettle, temperature control
To 40 DEG C, then reactant melting is gradually warming up to 70 DEG C, reacts 130min；Then 55 parts of three second are added into reaction kettle
Amine and 0.8 part of triethylamine hydrochloride, temperature control are stirred to react 3h, then filter to 50 DEG C, and into filtrate, 300 parts of addition is poly-
Ether dihydric alcohol keeps the temperature of reaction solution at 90 DEG C, is stirred to react 5h, then solvent evaporated, a kind of modified polyether can be obtained
Dihydric alcohol.
The catalyst is Bis(lauroyloxy)dioctyltin.
The chain extender is 1,4- butanediol.
The modified polyether dihydric alcohol average molecular weight is 1000.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 126s, and the surface strength of paper product is 1.45m/s.
Embodiment 2
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, reaction kettle is added in 75 parts of modified polyether dihydric alcohol and 40 parts of methyl diphenylene diisocyanate
In, it is then protected using high pure nitrogen, control temperature in the kettle is 60 DEG C, is added dropwise 10 parts after melting uniformly under agitation and contains
The acetone soln of 0.05 part of catalyst adds 0.1 part of 5- boric acid pinacol ester indol-2-one, 0.05 part into reaction kettle
3,6- carbazole dimethyl dicarboxylate, 0.01 part of 6- amino -2,3- dihydro 1-Indanone, 0.05 part of the poly- bicyclic evil of methylene oxygroup
Oxazolidine, 0.01 part of polyvinyl imidazole quinoline acetate, reaction 80min；Then 30 DEG C are cooled to, 2 parts of chain extender is added, stirs
Reaction 45min is mixed, is then added to 400 parts of purified water in reaction kettle under high velocity agitation, high speed dispersion 60min
Obtain a kind of Neutral Papermaking polymeric material.
A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 90 parts of stearic acid, 50 parts of thionyl chloride and 180 parts of toluene are added in reaction kettle, temperature control
To 30 DEG C, then reactant melting is gradually warming up to 60 DEG C, reacts 120min；Then 50 parts of three second are added into reaction kettle
Amine and 0.5 part of triethylamine hydrochloride, temperature control are stirred to react 1h, then filter to 40 DEG C, and into filtrate, 200 parts of addition is poly-
Ether dihydric alcohol keeps the temperature of reaction solution at 80 DEG C, is stirred to react 3h, then solvent evaporated, a kind of modified polyether can be obtained
Dihydric alcohol.
The catalyst is di-n-butyltin dilaurate.
The chain extender is 1,6-HD.
The modified polyether dihydric alcohol average molecular weight is 2000.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 123s, and the surface strength of paper product is 1.38m/s.
Embodiment 3
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, reaction kettle is added in 85 parts of modified polyether dihydric alcohol and 55 parts of methyl diphenylene diisocyanate
In, it is then protected using high pure nitrogen, control temperature in the kettle is 80 DEG C, is added dropwise 15 parts after melting uniformly under agitation and contains
The acetone soln of 0.35 part of catalyst adds 0.7 part of 5- boric acid pinacol ester indol-2-one, 0.5 part 3 into reaction kettle,
6- carbazole dimethyl dicarboxylate, 0.2 part of 6- amino -2,3- dihydro 1-Indanone, 0.2 part of the bicyclic oxazolidine of poly- methylene oxygroup,
0.2 part of polyvinyl imidazole quinoline acetate reacts 150min；Then 40 DEG C are cooled to, 8 parts of chain extender is added, stirring is anti-
90min is answered, is then added to 600 parts of purified water in reaction kettle under high velocity agitation, high speed dispersion 80min can be obtained
A kind of Neutral Papermaking polymeric material.
A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 110 parts of stearic acid, 70 parts of thionyl chloride and 250 parts of toluene are added in reaction kettle, temperature control
To 50 DEG C, then reactant melting is gradually warming up to 80 DEG C, reacts 150min；Then 60 parts of three second are added into reaction kettle
Amine and 1.5 parts of triethylamine hydrochloride, temperature control are stirred to react 5h, then filter to 60 DEG C, and into filtrate, 400 parts of addition is poly-
Ether dihydric alcohol keeps the temperature of reaction solution at 100 DEG C, is stirred to react 7h, then solvent evaporated, a kind of modified polyether can be obtained
Dihydric alcohol.
The catalyst is tetra-n-butyl tin.
The chain extender is ethylene glycol.
The modified polyether dihydric alcohol average molecular weight is 3000.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 131s, and the surface strength of paper product is 1.61m/s.
Embodiment 4
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, reaction kettle is added in 75 parts of modified polyether dihydric alcohol and 40 parts of methyl diphenylene diisocyanate
In, it is then protected using high pure nitrogen, control temperature in the kettle is 60 DEG C, is added dropwise 10 parts after melting uniformly under agitation and contains
The acetone soln of 0.05 part of catalyst adds 0.1 part of 5- boric acid pinacol ester indol-2-one, 0.05 part into reaction kettle
3,6- carbazole dimethyl dicarboxylate, 0.2 part of 6- amino -2,3- dihydro 1-Indanone, 0.12 part of the poly- bicyclic oxazole of methylene oxygroup
Alkane, 0.11 part of polyvinyl imidazole quinoline acetate, reaction 80min；Then 30 DEG C are cooled to, 2 parts of chain extender, stirring is added
45min is reacted, is then added to 400 parts of purified water in reaction kettle under high velocity agitation, high speed dispersion 60min can be obtained
To a kind of Neutral Papermaking polymeric material.
A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 110 parts of stearic acid, 70 parts of thionyl chloride and 250 parts of toluene are added in reaction kettle, temperature control
To 50 DEG C, then reactant melting is gradually warming up to 80 DEG C, reacts 150min；Then 60 parts of three second are added into reaction kettle
Amine and 1.5 parts of triethylamine hydrochloride, temperature control are stirred to react 5h, then filter to 60 DEG C, and into filtrate, 400 parts of addition is poly-
Ether dihydric alcohol keeps the temperature of reaction solution at 100 DEG C, is stirred to react 7h, then solvent evaporated, a kind of modified polyether can be obtained
Dihydric alcohol.
The catalyst is di-n-butyltin dilaurate.
The chain extender is 1,4- butanediol.
The modified polyether dihydric alcohol average molecular weight is 1000.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 128s, and the surface strength of paper product is 1.57m/s.
Embodiment 5
A kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, reaction kettle is added in 85 parts of modified polyether dihydric alcohol and 55 parts of methyl diphenylene diisocyanate
In, it is then protected using high pure nitrogen, control temperature in the kettle is 80 DEG C, is added dropwise 15 parts after melting uniformly under agitation and contains
The acetone soln of 0.35 part of catalyst adds 0.1 part of 5- boric acid pinacol ester indol-2-one, 0.5 part 3 into reaction kettle,
6- carbazole dimethyl dicarboxylate, 0.01 part of 6- amino -2,3- dihydro 1-Indanone, 0.2 part of the poly- bicyclic oxazole of methylene oxygroup
Alkane, 0.01 part of polyvinyl imidazole quinoline acetate, reaction 150min；Then 40 DEG C are cooled to, 8 parts of chain extender is added, stirs
Reaction 90min is mixed, is then added to 600 parts of purified water in reaction kettle under high velocity agitation, high speed dispersion 80min
Obtain a kind of Neutral Papermaking polymeric material.
A kind of modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 90 parts of stearic acid, 50 parts of thionyl chloride and 180 parts of toluene are added in reaction kettle, temperature control
To 30 DEG C, then reactant melting is gradually warming up to 60 DEG C, reacts 120min；Then 50 parts of three second are added into reaction kettle
Amine and 0.5 part of triethylamine hydrochloride, temperature control are stirred to react 1h, then filter to 40 DEG C, and into filtrate, 200 parts of addition is poly-
Ether dihydric alcohol keeps the temperature of reaction solution at 80 DEG C, is stirred to react 3h, then solvent evaporated, a kind of modified polyether can be obtained
Dihydric alcohol.
The catalyst is tetra-n-butyl tin.
The chain extender is ethylene glycol.
The modified polyether dihydric alcohol average molecular weight is 3000.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 125s, and the surface strength of paper product is 1.53m/s.
Comparative example 1
5- boric acid pinacol ester indol-2-one, the other the same as in Example 1 is not added.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 110s, and the surface strength of paper product is 1.37m/s.
Comparative example 2
It is not modified to polyether Glycols, the other the same as in Example 1.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 87s, and the surface strength of paper product is 1.21m/s.
Comparative example 3
3,6- carbazole dimethyl dicarboxylate, the other the same as in Example 1 is not added.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 112s, and the surface strength of paper product is 1.32m/s.
Comparative example 4
6- amino -2,3- dihydro 1-Indanone, the other the same as in Example 1 is not added.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 129s, and the surface strength of paper product is 1.50m/s.
Comparative example 5
The not bicyclic oxazolidine of addition polymerization methylene oxygroup, the other the same as in Example 1.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 121s, and the surface strength of paper product is 1.42m/s.
Comparative example 6
Polyvinyl imidazole quinoline acetate, the other the same as in Example 1 is not added.
The degree of sizing of the Neutral Papermaking polymeric material of this experiment preparation is 126s, and the surface strength of paper product is 1.46m/s.
Claims (5)
1. a kind of preparation method of Neutral Papermaking polymeric material, technology of preparing scheme are as follows:
According to mass fraction, the methyl diphenylene diisocyanate of 75-85 parts of modified polyether dihydric alcohols and 40-55 part is added
It in reaction kettle, is then protected using high pure nitrogen, control temperature in the kettle is 60-80 DEG C, under agitation drop after melting uniformly
Add the 10-15 parts of acetone solns containing 0.05-0.35 parts of catalyst into reaction kettle, adds 0.1-0.7 parts of 5- boric acid frequencies
That alcohol ester indol-2-one, 0.05-0.5 parts of 3,6- carbazole dimethyl dicarboxylates, 0.01-0.2 parts of 6- amino -2,3- indane -
1- ketone, 0.05-0.2 parts of the bicyclic oxazolidine of poly- methylene oxygroup, 0.01-0.2 parts of polyvinyl imidazole quinoline acetate, reaction
80-150min；Then 30-40 DEG C is cooled to, 2-8 parts of chain extender is added, 45-90min is stirred to react, then by 400-600
The purified water of part is added in reaction kettle under high velocity agitation, and a kind of neutrality can be obtained in high speed dispersion 60-180min
Paper grade (stock) polymeric material.
2. a kind of preparation method of Neutral Papermaking polymeric material according to claim 1, it is characterised in that: described one
Kind modified polyether dihydric alcohol is prepared according to following scheme:
According to mass fraction, 90-110 parts of stearic acid, 50-70 parts of thionyl chloride and 180-250 parts of toluene are added anti-
It answers in kettle, then temperature control to 30-50 DEG C, reactant melting is gradually warming up to 60-80 DEG C, reacts 120-150min；Then to anti-
50-60 parts of triethylamine of addition and 0.5-1.5 parts of triethylamine hydrochloride, temperature control in kettle is answered to be stirred to react 1- to 40-60 DEG C
Then 5h is filtered, 200-400 parts of polyether Glycols are added into filtrate, keep the temperature of reaction solution at 80-100 DEG C, stir
3-7h is reacted, then solvent evaporated, can be obtained a kind of modified polyether dihydric alcohol.
3. a kind of preparation method of Neutral Papermaking polymeric material according to claim 1, it is characterised in that: described urges
Agent is Bis(lauroyloxy)dioctyltin or di-n-butyltin dilaurate or tetra-n-butyl tin.
4. a kind of preparation method of Neutral Papermaking polymeric material according to claim 1, it is characterised in that: the expansion
Chain agent is 1,4- butanediol or 1,6-HD or ethylene glycol.
5. a kind of preparation method of Neutral Papermaking polymeric material according to claim 1, it is characterised in that: described changes
Property polyether Glycols average molecular weight be 1000-3000.
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Cited By (1)
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| CN111116794A (en) * | 2019-12-20 | 2020-05-08 | 蚌埠市鑫晟新材料科技有限公司 | Preparation method of neutral polymeric material for papermaking |
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