CN106749794A - A kind of polymerization for reducing resin flake - Google Patents
A kind of polymerization for reducing resin flake Download PDFInfo
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- CN106749794A CN106749794A CN201610516508.6A CN201610516508A CN106749794A CN 106749794 A CN106749794 A CN 106749794A CN 201610516508 A CN201610516508 A CN 201610516508A CN 106749794 A CN106749794 A CN 106749794A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F114/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F114/02—Monomers containing chlorine
- C08F114/04—Monomers containing two carbon atoms
- C08F114/06—Vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/20—Aqueous medium with the aid of macromolecular dispersing agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/01—High molecular weight, e.g. >800,000 Da.
Abstract
The invention belongs to field of macromolecule polymerization, more particularly to a kind of polymerization for reducing resin flake, suspension polymerization of the invention is that first addition deionized water, VCM, composite dispersing agent, anti-flake agent, composite initiator and stabilizer carry out polymerisation in polymeric kettle, polymerization pressure is 1.0 ~ 1.1MPa, polymeric reaction temperature is 52 DEG C ~ 60 DEG C, then when polymerization pressure drops to 0.05 ~ 0.09MPa, reaction terminating agent is added, is obtained after the remaining VCM of discharge.Corvic prepared by the present invention reduces the fish-eye number of Corvic, while improve the ageing whiteness of resin, strong operability, and polymerisation is had no adverse effects.
Description
Technical field
The invention belongs to field of macromolecule polymerization, more particularly to a kind of polymerization for reducing resin flake.
Background technology
With polyvinyl chloride（PVC）Production and processing technology is developed rapidly, and the quality and specificity to polyvinyl chloride resin propose
Requirement higher.If there is flake on product, the aesthetic property of product surface is not only had a strong impact on, can also reduce the drawing of product
The mechanical performances such as intensity, elongation are stretched, plastic foil, piece perforation is easily caused, for cable product, can be scratched to its electrical property, low temperature
Tropism can bring greatly harm, if come off, can also cause electrical breakdown accident.In suspension type polyvinyl-chloride product quality indicator
Flake typically refer in its processing and manufacturing, do not plastified due to some resin particles, difficult plasticizing or plastify it is bad and in plastics
On product formed " pimple ", " spar point ", broadly should also include because plastify it is bad and caused by product surface projection.
These particles are substantially still polyvinyl chloride, be in production process because of various factors and caused by specific granule.Its origin cause of formation exists
There is detailed introduction in many data, and none does not mention the quick of the too high formation of initiator local concentration in these data
Particle.Fast particles are referred to before suspension method PVC polymerisations under stirring and dispersant effect, initiator in vinyl chloride drop
Concentration locally too high generation textural anomaly closely glassy PVC granule.In recent years in the production process of Corvic
In, for improve production efficiency, it is desirable to use efficient initiator, therefore generation flake will be increased during polymerization
Probability, so limit the range of application of resin.In order to solve the negative effect that flake is brought, mainly have at present following
Technology.
Chinese patent CN 1005113B be mainly polymerization proceed to certain phase after be dividedly in some parts a kind of friendship containing carboxylic acid
Ally the communists polymers, mixed with aqueous polymerization medium, it is higher to produce a kind of bulk density, the less high-quality polyvinyl chloride of fish-eye number
Resin.But technique needs fully to hold addition opportunity, if adding opportunity assurance incorrect, flake can be caused to increase
Many trend, therefore operation is relatively difficult, productionization degree is relatively low.Currently used method is mainly carried in process
Plasticization temperature high reduces flake, but can not fundamentally solve the problems, such as that resin flake is more.
Simultaneously current city is refer in Chinese document " PVC flexible pipe for medical purpose surface spherulite producing causes and solution " text
A kind of more technology, i.e., the method that film grade resins flake is reduced by following process treatment, the method master are used on field
If by extending the material incorporation time of polyvinyl chloride resin, improving the means such as prilling processing temperature.Can be subtracted by the method
The artificial fish eye of few resin.But the method needs the incorporation time of fully extension material, and processing temperature also to have and significantly carry
Height, this will greatly increase production cost, and the artificial fish eye in the simply resin that eliminates of this method, can not be real from structure group
The flake of resin is reduced into aspect.
The content of the invention
Problem to be solved by this invention is to provide a kind of polymerization for reducing resin flake, from the immanent structure of resin
Aspect is improved, and reduces the defect of flake by improving plasticization temperature in process at present to overcome, and obtains one kind
Fish-eye number is few, the good Corvic of ageing whiteness.
It is of the present invention reduce resin flake polymerization be：First in polymeric kettle add deionized water, VCM,
Composite dispersing agent, anti-flake agent, composite initiator and stabilizer carry out polymerisation, and polymerization pressure is 1.0 ~ 1.1MPa, polymerization
Reaction temperature is 52 DEG C ~ 60 DEG C, then when polymerization pressure drops to 0.05 ~ 0.09MPa, adds reaction terminating agent, is discharged residual
After chlorine residue vinyl monomer, target product is then collected from product；
Described composite dispersing agent is partial alcoholysis（Alcoholysis degree is 50 ~ 80%）Polyvinyl alcohol and hydroxypropyl methyl cellulose（First
Epoxide content 25 ~ 35%, hydroxypropyl content 10 ~ 15%）Mixture, the compounding quality of polyvinyl alcohol and hydroxypropyl methyl cellulose
Than being 5 ~ 10:1, composite dispersing agent in mass, consumption for VCM gross mass 0.001 ~ 0.3%, preferably 0.05 ~
0.2%。
Described composite initiator, is that 1 or 2 hydrogen atoms are replaced and generated by organic group in hydrogen peroxide molecule
Organic peroxide, the alkanes RO-OR ' of peroxidating two, peroxidating two acyl class RCO-OCR ', peroxide are divided into by the difference of substitution base
Change one or more arbitrary proportions in carboxylic acid esters RCOO-OR ' or peroxy dicarbonates ROCOO-OOCOR '
Combination, R and R ' is identical or different alkyl, and in mass, consumption is the 0.02 of VCM gross mass to composite initiator
~ 0.1%, preferably 0.04-0.08%；
The described alkane RO-OR ' of peroxidating two is：Cumyl peroxide or di-tert-butyl peroxide；
Described peroxidating two acyl RCO-OCR ' classes are：Diisobutyryl peroxide, the different nonanoyl of peroxidating two, didecanoyl peroxide,
Dilauroyl peroxide, dibenzoyl peroxide, peroxidating two（3,5,6- trimethyl acetyls）Or acetyl peroxide hexamethylene sulphonyl；
Described peroxycarboxylic esters of gallic acid RCOO-OR ' is：Tert-Butyl peroxypivalate, peroxidating neopentanoic acid tert-pentyl ester, peroxide
Change neopentanoic acid isopropyl phenyl ester, the new heptanoic acid tert-butyl ester of peroxidating, the new enanthic acid -3- hydroxyls -1,1- dimethyl butyl ester of peroxidating, peroxidating
New enanthic acid isopropyl phenyl ester, zinc peroxide capric acid book butyl ester, peroxidating neodecanoic acid tert-pentyl ester, cumyl peroxyneodecanoate, mistake
Oxidation neodecanoic acid -1,1,3,3- tetramethyls butyl ester, peroxidating neodecanoic acid -2,4,4- trimethyls pentyl ester, peroxidating neodecanoic acid -3- hydroxyls
Base -1,1- dimethyl butyl ester, peroxide -2-ethyl hexanoic acid tert-butyl or peroxidating -2 ethyl hexanoic acid tert-pentyl ester；
Described peroxy dicarbonates ROCOO-OOCOR ' is：Peroxy dicarbonate dibutyl ester, the fourth of peroxy dicarbonate two
Ester, peroxy dicarbonate and secondary butyl ester, peroxy dicarbonate di-n-propyl ester, peroxy dicarbonate diisopropyl fat, the carbon of peroxidating two
Sour dicyclohexyl maleate, peroxy dicarbonate two（2- Octyl Nitrites）, peroxy dicarbonate two（4- t-butyl cyclohexyl methacrylates）, peroxidating two
Carbonic acid two（3- methylbutyl butenoates）, -2- the ethyl phenoxies of peroxy dicarbonate two, the double cetyls of peroxy dicarbonate or the carbon of peroxidating two
Sour two pairs of myristins.
The new enanthic acid isopropyl phenyl ester of the preferred peroxidating of described composite initiator and di-cyclohexylperoxy di-carbonate are compounded, multiple
It is 1 with mass ratio:1~4.
Described terminator is 2- ethylhydroxyl amines（Vehicle economy HA）, in mass, consumption is VCM gross mass
0.001 ~ 0.1%, preferably 0.005-0.04%.
Described anti-flake agent be tert-butyl catechol, 4,4- alkyl diphenol, TBHQ, butylphenol,
Sulfonic benzo phenols, nitrophenols, tertiary butyl -4-hydroxyanisol, butanol, phosphomolybdic acid or methyl potassium xanthate, the anti-flake
Agent is one kind of polymerization inhibitor, including tert-butyl catechol, 4,4- alkyl diphenol, TBHQ, butylphenol, sulfonic acid
Base phenol, nitrophenols, tertiary butyl -4-hydroxyanisol, butanol, phosphomolybdic acid, methyl potassium xanthate etc., its concentration are 5 ~ 30%,
It is preferred that 5 ~ 15%, anti-flake agent in mass, consumption for VCM gross mass 0.0001 ~ 0.005%, preferably 0.0005 ~
0.003%。
The stabilizer is alcohols, is the compound after hydrogen atom in alkane molecule is optionally substituted by a hydroxyl group, by substituted hydrogen
The number of atom is divided into monohydric alcohol（ROH）And polyalcohol.
Described stabilizer is monohydric alcohol, polyalcohol, polyhydric alcohol trim or polyalcohol etherificate trim；
Described monohydric alcohol is lauryl alcohol, tetradecyl alchohol, hexadecanol, octadecyl alcolol, eicosanol；
Described polyalcohol is pentaerythrite, D-sorbite or trimethylolpropane；
Described polyhydric alcohol trim is pentaerythrite monostearate, pentaerythrite distearyl acid fat or pentaerythrite four
Stearate；
Described polyalcohol etherificate trim is dipentaerythritol ether, bisphenol A diglycidyl ether, ethylene glycol diglycidyl
Ether, diethylene glycol (DEG) diglycidyl ether, triethylene glycol diglycidylether or T 55；
In mass, consumption is 0.01 ~ 0.5%, preferably the 0.05 ~ 0.2% of VCM gross mass to described alcohols stabilizer.
At 52 DEG C ~ 60 DEG C, polymerization temperature determines PVC molecular weight, while polymerization temperature corresponds to for polymeric reaction temperature control
VCM saturated vapor pressures, polymerization temperature is higher, and polymerization pressure is higher, and too high polymerization temperature has higher to the pressure-resistant energy level of polymeric kettle
It is required that.
The gross mass of described deionized water is 1.2 ~ 1.8 with the ratio of VCM gross mass:1, preferably 1.3 ~
1.5:1, water-oil factor is too small, and polymerisation appearance is unstable, and resin particle distribution broadens, and a large amount of bulky grains, water-oil factor mistake occurs
The reduction of big then production efficiency.
The present invention：Using composite initiation system, coordinated with certain proportion, be sufficiently stirred for, in addition phase addition one before polymerization
Anti- flake agent and stabilizer are planted, so as to the polyvinyl chloride resin that flake is few, ageing whiteness is high is obtained.
In suspension polymerization of VC, vinyl chloride (VCM) drop under stirring, is dispersed in water drawing through initiator
Send out and polymerisation occurs, generate polyvinyl chloride resin.In current PVC production processes mostly using normal temperature charging, cold stir, progressively heat up
The traditional handicraft being polymerized with constant temperature.And we at present use higher effective initiator often it is cold mix intensification during begin to
Decompose and trigger vinyl chloride（VC）Monomer is polymerized, generation molecular weight PVC higher, further produces in process substantial amounts of
Flake, in order to prevent the generation of fast particles, the present invention adds a certain amount of anti-flake agent and stabilizer in the polymerization starting stage,
Stir, rise gentle polymerization initial stage and produce certain inhibition cold, so as to prevent the generation of fast particles and high molecular weight resin,
And the heat endurance of Corvic can be improved, it is smaller to normal polymerisation influence degree.
Compared with the prior art, the beneficial effects of the invention are as follows：
Corvic prepared by the present invention reduces the fish-eye number of Corvic, while improve the aging white of resin
Degree, strong operability, and polymerisation is had no adverse effects.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=10：1）0.15 part, composite initiator（Peroxide
Change new enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：3）0.10 part, anti-flake agent（TBHQ）
0.001 part, stabilizer（Octadecyl alcolol）0.1 part, then 100 parts of the VCM of addition formula ratio after -0.098MPa is evacuated to,
It is cold to stir 10 minutes, 55 DEG C of beginning timing of reaction temperature are warming up to, keep polymerization temperature to decline 0.09MPa to polymerization pressure, add
0.02 part of terminating reaction of diethyl hydroxylamine, is discharged after reclaiming monomer, and polyvinyl chloride resin is obtained after centrifugal drying.This gained test knot
Fruit is shown in Table 1.
Embodiment 2
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=10：1）0.15 part, composite initiator（Peroxide
Change new enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：1）0.10 part, anti-flake agent（Tertiary butyl -4- hydroxy benzenes first
Ether）0.001 part, stabilizer（Octadecyl alcolol）0.1 part, then it is evacuated to the VCM 100 of addition formula ratio after -0.098MPa
Part, it is cold to stir 10 minutes, 55 DEG C of beginning timing of reaction temperature are warming up to, keep polymerization temperature to decline 0.09MPa to polymerization pressure, plus
Enter 0.02 part of terminating reaction of diethyl hydroxylamine, discharged after reclaiming monomer, polyvinyl chloride resin is obtained after centrifugal drying.This gained test
The results are shown in Table 1.
Embodiment 3
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=5：1）0.15 part, composite initiator（Peroxidating
New enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：3）0.10 part, anti-flake agent（TBHQ）0.001
Part, stabilizer（Lauryl alcohol）0.1 part, then 100 parts of the VCM of addition formula ratio after -0.098MPa is evacuated to, it is cold to stir
10 minutes, 55 DEG C of beginning timing of reaction temperature are warming up to, keep polymerization temperature to decline 0.08MPa to polymerization pressure, add diethyl
0.02 part of terminating reaction of base azanol, is discharged after reclaiming monomer, and polyvinyl chloride resin is obtained after centrifugal drying.This gained test result is shown in
Table 1.
Embodiment 4
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=5：1）0.05 part, composite initiator（Peroxidating
New enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：2）0.10 part, anti-flake agent（TBHQ）0.001
Part, stabilizer（Octadecyl alcolol）0.1 part, then 100 parts of the VCM of addition formula ratio after -0.098MPa is evacuated to, it is cold to stir
10 minutes, 55 DEG C of beginning timing of reaction temperature are warming up to, keep polymerization temperature to decline 0.08MPa to polymerization pressure, add diethyl
0.02 part of terminating reaction of base azanol, is discharged after reclaiming monomer, and polyvinyl chloride resin is obtained after centrifugal drying.This gained test result is shown in
Table 1.
Comparative example 1
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=15：1）0.15 part, composite initiator（Peroxide
Change new enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：5）0.10 part, then be evacuated to after -0.098Mpa to add and match somebody with somebody
100 parts of the VCM of side's amount, it is cold to stir 10 minutes, the beginning timing of 55 DEG C of reaction temperature are warming up to, polymerization temperature is kept to gathering
Resultant pressure declines 0.09Mpa, adds 0.02 part of terminating reaction of diethyl hydroxylamine, is discharged after reclaiming monomer, after centrifugal drying
Polyvinyl chloride resin.This gained test result is shown in Table 1.
Comparative example 2
Polymeric kettle is rinsed well, anti-fouling agent is coated and is rinsed, then vacuumized, according to going for polymerization formula suction formula ratio
140 parts of ionized water, composite dispersing agent（Polyvinyl alcohol：Hydroxypropyl methyl cellulose=2：1）0.15 part, composite initiator（Peroxidating
New enanthic acid isopropyl phenyl ester：Di-cyclohexylperoxy di-carbonate=1：4）0.10 part, anti-flake agent（TBHQ）0.0007
Part, then 100 parts of the VCM of addition formula ratio after -0.098MPa is evacuated to, it is cold to stir 10 minutes, it is warming up to reaction temperature
55 DEG C of beginning timing, keep polymerization temperature to decline 0.08MPa to polymerization pressure, add 0.02 part of terminating reaction of diethyl hydroxylamine,
Discharged after reclaiming monomer, polyvinyl chloride resin is obtained after centrifugal drying.This gained test result is shown in Table 1.
The polyvinyl alcohol alcoholysis degree of above example and comparative example is 60%, hydroxypropyl methyl cellulose methoxyl content
28%th, hydroxypropyl content 13%.
The embodiment of table 1 and comparative example performance data table
Claims (8)
1. it is a kind of reduce resin flake polymerization, it is characterised in that：Deionized water, vinyl chloride list are first added in polymeric kettle
Body, composite dispersing agent, anti-flake agent, composite initiator and stabilizer carry out polymerisation, and polymerization pressure is 1.0 ~ 1.1MPa, is gathered
It is 52 DEG C ~ 60 DEG C to close reaction temperature, then when polymerization pressure drops to 0.05 ~ 0.09MPa, adds reaction terminating agent, discharge
It is obtained after remaining VCM.
2. the polymerization for reducing resin flake according to claim 1, it is characterised in that described composite dispersing agent is
Polyvinyl alcohol and methoxyl content 25 ~ 35%, the hydroxypropyl methyl cellulose of hydroxypropyl content 10 ~ 15% of the alcoholysis degree for 50 ~ 80%
Mixture, the compounding mass ratio of polyvinyl alcohol and hydroxypropyl methyl cellulose is 5 ~ 10:1, composite dispersing agent in mass, is used
Measure is the 0.001 ~ 0.3% of VCM gross mass.
3. the polymerization for reducing resin flake according to claim 1, it is characterised in that described composite initiator is
The alkanes RO-OR ' of peroxidating two, peroxidating two acyl class RCO-OCR ', peroxycarboxylic esters of gallic acid RCOO-OR ' or the carbon of peroxidating two
The combination of one or more arbitrary proportions in esters of gallic acid ROCOO-OOCOR ', R and R ' is identical or different alkyl,
In mass, consumption is the 0.02 ~ 0.1% of VCM gross mass to composite initiator.
4. the polymerization for reducing resin flake according to claim 1, it is characterised in that described composite initiator is
The new enanthic acid isopropyl phenyl ester of peroxidating and di-cyclohexylperoxy di-carbonate are compounded, and compounding mass ratio is 1:1~4.
5. the suspension polymerization for reducing resin flake according to claim 1, it is characterised in that described terminator is
2- ethylhydroxyl amines, in mass, consumption is the 0.001 ~ 0.1% of VCM gross mass.
6. it is according to claim 1 reduce resin flake polymerization, it is characterised in that described anti-flake agent be uncle
Butyl-catechol, 4,4- alkyl diphenol, TBHQ, butylphenol, sulfonic benzo phenols, nitrophenols, tertiary butyl-
4-hydroxyanisol, butanol, phosphomolybdic acid or methyl potassium xanthate, its concentration are 5 ~ 30%, and in mass, consumption is for anti-flake agent
The 0.0001-0.005% of VCM gross mass.
7. it is according to claim 1 reduce resin flake polymerization, it is characterised in that described stabilizer be unitary
Alcohol, polyalcohol, polyhydric alcohol trim or polyalcohol etherificate trim, described monohydric alcohol is lauryl alcohol, tetradecyl alchohol, 16
Alcohol, octadecyl alcolol, eicosanol；Described polyalcohol is pentaerythrite, D-sorbite or trimethylolpropane；Described polyol ester
Change trim is pentaerythrite monostearate, pentaerythrite distearyl acid fat or the stearate of pentaerythrite four；Described is more
The etherified trim of unit is dipentaerythritol ether, bisphenol A diglycidyl ether, ethylene glycol diglycidylether, diethylene glycol (DEG) two contract
Water glycerin ether, triethylene glycol diglycidylether or T 55, in mass, consumption is vinyl chloride to alcohols stabilizer
The 0.01 ~ 0.5% of monomer gross mass.
8. it is according to claim 1 reduce resin flake polymerization, it is characterised in that described deionized water it is total
Quality is 1.2 with the ratio of VCM gross mass:1~1.8:1.
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| CN110642967A (en) * | 2019-09-19 | 2020-01-03 | 宜宾天原集团股份有限公司 | Preparation method of self-stabilizing polyvinyl chloride resin |
| KR20200047014A (en) * | 2018-10-26 | 2020-05-07 | 주식회사 엘지화학 | Initiator composition for producing of viniy chloride based polymer and method for preparing vinyl chloride based polymer using the same |
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Application publication date: 20170531 |