NO145763B - PROCEDURE FOR SUSPENSION POLYMERIZATION OF VINYL CHLORIDE - Google Patents
PROCEDURE FOR SUSPENSION POLYMERIZATION OF VINYL CHLORIDE Download PDFInfo
- Publication number
- NO145763B NO145763B NO754158A NO754158A NO145763B NO 145763 B NO145763 B NO 145763B NO 754158 A NO754158 A NO 754158A NO 754158 A NO754158 A NO 754158A NO 145763 B NO145763 B NO 145763B
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- Prior art keywords
- vinyl chloride
- polymerization
- monomers
- suspension polymerization
- procedure
- Prior art date
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims description 12
- 238000010557 suspension polymerization reaction Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- 239000000178 monomer Substances 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 5
- 238000007127 saponification reaction Methods 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 10
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 5
- 239000000347 magnesium hydroxide Substances 0.000 description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 5
- 235000012254 magnesium hydroxide Nutrition 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- LGJCFVYMIJLQJO-UHFFFAOYSA-N 1-dodecylperoxydodecane Chemical compound CCCCCCCCCCCCOOCCCCCCCCCCCC LGJCFVYMIJLQJO-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 2
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- -1 vinyl halides Chemical class 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical class OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 229910019440 Mg(OH) Inorganic materials 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical class CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- DSTWFRCNXMNXTR-AATRIKPKSA-N dipropyl (e)-but-2-enedioate Chemical compound CCCOC(=O)\C=C\C(=O)OCCC DSTWFRCNXMNXTR-AATRIKPKSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 150000005673 monoalkenes Chemical class 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 description 1
- HVAMZGADVCBITI-UHFFFAOYSA-M pent-4-enoate Chemical compound [O-]C(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-M 0.000 description 1
- 125000005634 peroxydicarbonate group Chemical group 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08F14/00—Homopolymers and copolymers 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
- C08F14/02—Monomers containing chlorine
- C08F14/04—Monomers containing two carbon atoms
- C08F14/06—Vinyl chloride
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte for suspensjonspolymerisering av vinylklorid, enten alene eller i blanding med andre kopolymeriserbare monomerer, og det særegne ved fremgangsmåten i henhold til oppfinnelsen er at polymeriseringen gjennomføres i nærvær av en blanding inneholdende mellom 0,01 og 0,5 vektprosent, regnet på mengden av monomerene, av polyvinylalkoholer med et gjennomsnittlig forsepningstall på mellom 300 og 500 sammen med fra 0,1 til 0,5 vektprosent, regnet på monomerene, The present invention relates to a method for the suspension polymerization of vinyl chloride, either alone or in a mixture with other copolymerizable monomers, and the peculiarity of the method according to the invention is that the polymerization is carried out in the presence of a mixture containing between 0.01 and 0.5 percent by weight, calculated on the amount of the monomers, of polyvinyl alcohols with an average saponification number of between 300 and 500 together with from 0.1 to 0.5 percent by weight, calculated on the monomers,
enten av bentonitt eller av Hg( OH^). og (NH^^SO^, hvorav (NH^^SO^ foretrukket tilsettes først ved slutten av polymeriseringen. either of bentonite or of Hg( OH^). and (NH^^SO^, of which (NH^^SO^ is preferably added only at the end of the polymerization.
Disse trekk ved oppfinnelsen fremgår av patentkravet. These features of the invention appear in the patent claim.
Det er kjent at ved suspensjonspolymerisering av vinylklorid, enten alene eller i blanding med andre monomerer, It is known that in suspension polymerization of vinyl chloride, either alone or in admixture with other monomers,
samles store mengder polymer på veggene av autoklaven. Mengden av slik avsetning er normalt avhengig av omrør-ingsmiddel, de sammensetninger som anvendes (type og mengde dispergeringsmiddel og katalysatorer), de forurensninger som er tilstede i monomerene og antallet av polymerisasjo-ner som gjennomføres. large amounts of polymer accumulate on the walls of the autoclave. The amount of such deposition normally depends on the stirring agent, the compositions used (type and amount of dispersant and catalysts), the impurities present in the monomers and the number of polymerizations carried out.
En slik avsetning reduserer varmegjennomgangen gjennom veggene i autoklaven og fører til vanskeligheter med styr-ing av reaksjonen. "Videre vil produktet være sterkt foru-renset med harde og glassaktige krystaller. Som vanlig fjernes ansetningene etter hver polymerisering, enten manuelt eller med vann med høyt trykk, som krever en time eller mer. Ved manuelle operasjoner vil videre arbeidsmiljø-problemer oppstå for det personale som gjennomfører fjern-elsen av avsetningene. Det italienske patentskrift 874.456 vedrører en fremgangsmåte for suspensjonspolymerisering av vinylklorid hvor de nevnte ulemper avhjelpes ved at det under reaksjonen tilsettes magnesiumhydroksyd i en maksi-mal mengde på 1000 ppm i forhold til monomerer. Det opp-nås derved en vesetlig nedsettelse av avleiringene, men også samtidig en nedsettelse av porøsiteten og varmestabiliteten av polymeren. Tilsetning av magnesiumhydroksyd i en mengde større enn 1000 ppm bevirker en utålelig kvali-tetsnedsettelse av produktet. Such a deposit reduces the heat transfer through the walls of the autoclave and leads to difficulties in controlling the reaction. "Furthermore, the product will be heavily contaminated with hard and glassy crystals. As usual, the deposits are removed after each polymerisation, either manually or with high-pressure water, which requires an hour or more. With manual operations, further work environment problems will arise for the personnel who carry out the removal of the deposits. The Italian patent document 874,456 relates to a method for the suspension polymerization of vinyl chloride where the aforementioned disadvantages are remedied by adding magnesium hydroxide during the reaction in a maximum amount of 1000 ppm in relation to monomers. This is achieved thereby a substantial reduction of the deposits, but also at the same time a reduction of the porosity and heat stability of the polymer. Addition of magnesium hydroxide in an amount greater than 1000 ppm causes an intolerable reduction in the quality of the product.
Den erkjennelse som ligger til grunn for oppfinnelsen er at suspensjonspolymerisering av vinylklorid enten alene eller i blanding med andre monomerer, ved den foreliggende oppfinnelse kan gjennomføres uten at det avsettes avleiringer på veggene av utoklaven, og uten at polymeregen-skapene nedsettes. The realization that forms the basis of the invention is that suspension polymerization of vinyl chloride either alone or in a mixture with other monomers, in the present invention, can be carried out without depositing deposits on the walls of the autoclave, and without reducing the polymer properties.
De polymerer av vinylklorid som kan fremstilles ved den foreliggende oppfinnelse, er granulære homopolymerer av vinylklorid eller kopolyrnerer av vinylklorid som inne-holder omtrent 80 % eller mer vinylklorid eller omtrent 20 % eller mindre av vinylidenforbindelser omfattende en terminal gruppe Ct^ = C<^ . Disse vinylidenforbindelser omfatter f.eks. hvilke som helst forbindelser som fagmann-en kjenner som kopolymeriserbare med vinylklorid, om-fattende forskjellige vinylhalogenider, vinylidenklorid, vinylestere som f.eks vinylacetat eller vinylbutyrat, estere av akryl- eller metakrylsyre, som f.eks. metyl-akrylat, butylakrylater, isoktylakrylat, metylmetakrylat eller heksylmetakrylat, malein- eller fumarsyreestere som f.eks. dietylmeleat eller dipropylfumarat, aromatiske vinylmonomerer som f.eks styren, monoolefiner som f.eks. etylen, propylen eller butylen, vinyletere som f.eks. vinyletyleter, allylestere som f.eks. allylacetat, diallyl-ftalat, akrylnitril eller metakrylnitril, o.l. The polymers of vinyl chloride that can be produced by the present invention are granular homopolymers of vinyl chloride or copolymers of vinyl chloride containing about 80% or more vinyl chloride or about 20% or less of vinylidene compounds comprising a terminal group Ct^ = C<^ . These vinylidene compounds include e.g. any compounds known to the person skilled in the art to be copolymerizable with vinyl chloride, including various vinyl halides, vinylidene chloride, vinyl esters such as vinyl acetate or vinyl butyrate, esters of acrylic or methacrylic acid, such as e.g. methyl acrylate, butyl acrylates, isooctyl acrylate, methyl methacrylate or hexyl methacrylate, maleic or fumaric acid esters such as diethyl meleate or dipropyl fumarate, aromatic vinyl monomers such as styrene, monoolefins such as ethylene, propylene or butylene, vinyl ethers such as vinyl ethyl ether, allyl esters such as allyl acetate, diallyl phthalate, acrylonitrile or methacrylonitrile, etc.
Polymeriseringsreaksjonen gjennomføres vanligvis under The polymerization reaction is usually carried out under
trykk i nærvær av en katalysator som er oppløselig i mono-meren (olje) ved temperaturer lavere enn omtrent 100°C. pressure in the presence of a catalyst which is soluble in the monomer (oil) at temperatures lower than about 100°C.
Egnede oljeoppløselige katalysatorer omfatter f.eks. lau-rylperoksyd, peroksydikarbonater, inklusive diisopropylperoksydikarbonat, kaprylylperoksyd, azodiisobutyronitril e.l., vanligvis anvendt ved temperaturer i området fra omtrent 40 til 60°C. Den anvendte mengde holdes vanligvis så liten som mulig for fremdeles å gi en god polymerisasjons-hastighet. Mindre enn en del, f.eks. 0,2 deler lauryl-peroksyd eller 0,02 deler diisopropylperoksydikarbonat kan anvendes. Katalysatoren kan anvendes som sådan eller fremstilles direkte i polymeriseringsautoklaven. Dispergerings-midlet omfatter polyvinylalkohol med det nevnte lave forsepningstall. Mengden av polyvinylalkohol med forsepningstall på mellom 300 og 500 varierer fra 0,01 til 0,5 vektprosent i forhold til monomervekten,mens mengden av bentonitt eller Mg(OH)2 varierer mellom 0,1 og 0,5 vektprosent i forhold til tilført monomer eller monomerer. Suitable oil-soluble catalysts include e.g. lauryl peroxide, peroxydicarbonates, including diisopropyl peroxydicarbonate, caprylyl peroxide, azodiisobutyronitrile, etc., usually used at temperatures in the range from about 40 to 60°C. The amount used is usually kept as small as possible to still give a good polymerization rate. Less than a part, e.g. 0.2 parts lauryl peroxide or 0.02 parts diisopropyl peroxydicarbonate can be used. The catalyst can be used as such or prepared directly in the polymerization autoclave. The dispersant comprises polyvinyl alcohol with the aforementioned low saponification number. The amount of polyvinyl alcohol with a saponification number of between 300 and 500 varies from 0.01 to 0.5 weight percent in relation to the monomer weight, while the amount of bentonite or Mg(OH)2 varies between 0.1 and 0.5 weight percent in relation to added monomer or monomers.
Alle arbeidsbetingelser vil fremgå klarere av de følgende eksempler som skal illustrere oppfinnelsen. All working conditions will appear more clearly from the following examples which will illustrate the invention.
SAMMENLIKNINGSEKSEMPEL 1 COMPARISON EXAMPLE 1
En 25 m <2>reaktor , utstyrt med røreverk og en Pfaudler-bølge-bryter , ble tilført følgende blanding, basert på 100 deler vinylklorid: A 25 m <2>reactor, equipped with a stirrer and a Pfaudler wave breaker, was fed the following mixture, based on 100 parts of vinyl chloride:
Røreverket ble rotert med en hastighet på 120 omdrein- The stirrer was rotated at a speed of 120 rev.
inger pr. minutt og raksjonstemperaturen var 55°C. Etter 9 timer var det ikke lenger mulig å styre reaksjonen, og restmonomeren ble fjernet ved destillasjon og det ble fun-net en omdannelse på omtrent 70 %. Avleiringene, fjernet manuelt utgjorde omtrent 8 kg og densiteten av produktet var 490 g/l. ing per minute and the reaction temperature was 55°C. After 9 hours it was no longer possible to control the reaction, and the residual monomer was removed by distillation and a conversion of approximately 70% was found. The deposits, removed manually, amounted to approximately 8 kg and the density of the product was 490 g/l.
SAMMENLIKNINGSEKSEMPEL 2 COMPARISON EXAMPLE 2
Reaksjonsblandingen i eksempel 1 ble supplert med 0,06 The reaction mixture in Example 1 was supplemented with 0.06
deler Mg(OH)2- Det ble gjennomført fem kjøringer før renseoperasjonen hvor det da ble fjernet 10 kg avleiringer. Omdannelseshastigheten, som var høyere for de første porsjoner og etter hvert sank, var gjennomsnittlig ca. 78 %. parts Mg(OH)2- Five runs were carried out before the cleaning operation where 10 kg of deposits were then removed. The conversion rate, which was higher for the first portions and then decreased, averaged approx. 78%.
SAMMENLIKNINGSEKSEMPEL 3 COMPARISON EXAMPLE 3
I forhold til sammensetningseksempel 2 ble mengden Mg(OH)2 øket til 0,2 deler. Etter 15 kjøringer ble det fjernet II kg belegg. In relation to composition example 2, the amount of Mg(OH)2 was increased to 0.2 parts. After 15 runs, II kg of coating was removed.
Den gjennomsnittlige omdannelse var omtrent 87 %. Også i denne rekke av kjøringer sank omdannelsesgraden etter hvert som avleiringene på veggene øket. Den gjennomsnittlige densitet (530 g/l) viste seg også høyere enn den som ble oppnådd i sammenlikningseksempel 1. Den permiske stabilitet var stadig dårlig og ikke akseptabel. En prøve av denne rekke av kjøringer , hvor det ved slutten av polymerisasjonen ble tilsatt (NH^) 2S04 0<3 foretatt en vasking av dannet polymer, The average conversion was about 87%. Also in this series of runs, the conversion rate decreased as the deposits on the walls increased. The average density (530 g/l) also proved higher than that obtained in comparative example 1. The permic stability was still poor and not acceptable. A sample of this series of runs, where (NH^) 2S04 0<3 was added at the end of the polymerization and a washing of the formed polymer was carried out,
ga en normal varmestabilitet. Denne behandling anvendes alltid i de etterfølgende eksempler hvor det anvendes Mg(OH)2. gave a normal thermal stability. This treatment is always used in the following examples where Mg(OH)2 is used.
EKSEMPEL 1 EXAMPLE 1
Sammenlikningseksempel 3 ble gjentatt, med unntagelse av Comparison example 3 was repeated, with the exception of
at det ble tilsatt 0 ,07 deler polyvinylalkohol med et forsepningstall på 420. that 0.07 parts of polyvinyl alcohol with a saponification number of 420 was added.
Etter 50 kjøringer uten rensing syntes veggene å være helt After 50 runs without cleaning, the walls appeared to be completely intact
fri for belegg. Omdannelsen var 93 % ved alle porsjoner og densiteten var 480 g/l. free of coating. The conversion was 93% for all portions and the density was 480 g/l.
En slik sammensetning, ved forsøk i en reaktor med mindre størrelse og varierbar omrøringshastighet, ga de samme resultater. Such a composition, when tested in a reactor with a smaller size and variable stirring speed, gave the same results.
Det var i dette tilfelle selvfølgelig å tilpasse mengden In this case, of course, the quantity had to be adapted
av det primære dispergeringsmiddel for å oppnå de ønskede morfolofiske egenskaper. of the primary dispersant to achieve the desired morphological properties.
EKSEMPEL 2 EXAMPLE 2
Som eksempel 1 men ved å erstatte MgfOH^ med 0,05 deler As Example 1 but replacing MgfOH^ with 0.05 parts
av kommersiell bentonitt ("Ultragel 300"). Etter kjøringer ble det fjernet 5 kg belegg. of commercial bentonite ("Ultragel 300"). After runs, 5 kg of coating was removed.
Den gjennomsnittlige omdannelse var 92 % og densitet 460 The average conversion was 92% and density 460
g/l. Varmestabiliteten var optimal selv uten den ekstra tilsetning av (NH^) ve<^ slutten av polymeriseringen. g/l. The thermal stability was optimal even without the additional addition of (NH^) ve<^ the end of the polymerization.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT30336/74A IT1026902B (en) | 1974-12-10 | 1974-12-10 | PROCEDURE FOR THE POLYMERIZATION IN SUSPENSION OF VINYL CHLORIDE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO754158L NO754158L (en) | 1976-06-11 |
| NO145763B true NO145763B (en) | 1982-02-15 |
| NO145763C NO145763C (en) | 1982-05-26 |
Family
ID=11229558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO754158A NO145763C (en) | 1974-12-10 | 1975-12-09 | PROCEDURE FOR SUSPENSION POLYMERIZATION OF VINYL CHLORIDE |
Country Status (29)
| Country | Link |
|---|---|
| JP (1) | JPS5183686A (en) |
| AU (1) | AU500593B2 (en) |
| BE (1) | BE836384A (en) |
| BG (1) | BG34188A3 (en) |
| CA (1) | CA1068046A (en) |
| CH (1) | CH620231A5 (en) |
| CS (1) | CS195301B2 (en) |
| DD (1) | DD122981A5 (en) |
| DE (1) | DE2555568C2 (en) |
| DK (1) | DK552375A (en) |
| EG (1) | EG12460A (en) |
| ES (1) | ES443586A1 (en) |
| FR (1) | FR2294189A1 (en) |
| GB (1) | GB1496058A (en) |
| HU (1) | HU172316B (en) |
| IE (1) | IE42205B1 (en) |
| IL (1) | IL48589A (en) |
| IN (1) | IN144911B (en) |
| IT (1) | IT1026902B (en) |
| LU (1) | LU73949A1 (en) |
| NL (1) | NL7514358A (en) |
| NO (1) | NO145763C (en) |
| PH (1) | PH14920A (en) |
| PL (1) | PL103792B1 (en) |
| RO (1) | RO67271A (en) |
| SE (1) | SE7513874L (en) |
| TR (1) | TR18667A (en) |
| YU (1) | YU311975A (en) |
| ZA (1) | ZA757450B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2528950B2 (en) * | 1975-06-28 | 1979-02-15 | Sigma Italiana Prodotti Chimici S.P.A., Bergamo (Italien) | Process for the production of polyvinyl chloride |
| IT1055887B (en) * | 1976-02-17 | 1982-01-11 | Sigma Italiana Prod Chimici | PROCESS PERFECTED FOR THE PRODUCTION OF POLIVINLI CHLORIDE |
| DE2629880B2 (en) * | 1976-07-02 | 1980-10-16 | Wacker-Chemie Gmbh, 8000 Muenchen | Process for the production of polyvinyl chloride by the suspension process |
| JPS5414908A (en) * | 1977-07-04 | 1979-02-03 | Tokuyama Soda Co Ltd | Preparation of ethers |
| IT1137506B (en) * | 1981-03-13 | 1986-09-10 | Anic Spa | COMPOSITION FOR THE COATING OF THE WALLS OF THE REACTORS AND RELATED EQUIPMENT, INTENDED FOR THE POLYMERIZATION OF VINYL COMPOUNDS, SUITABLE FOR AVOIDING OR REDUCING DEPOSITS AND INCROSTATIONS OF THE SAME EQUIPMENT AND METHOD FOR ITS USE |
| JPS62101609A (en) * | 1985-10-29 | 1987-05-12 | Mitsubishi Kasei Vinyl Co | Production of vinyl chloride polymer |
| US4739023A (en) * | 1986-10-02 | 1988-04-19 | Lee Kyu W | Polymerization of vinyl chloride with a clay and a hydrophilic polymer suspending agent |
| DE4124962A1 (en) * | 1991-07-27 | 1993-01-28 | Hoechst Ag | METHOD FOR PRODUCING A VINYL CHLORIDE POLYMERISATE |
| DE10301975A1 (en) | 2003-01-20 | 2004-07-29 | Wacker Polymer Systems Gmbh & Co. Kg | Production of silicon-modified polymers aqueous dispersions or powders by radically polymerizing ethylenically-unsaturated monomers in presence of a silicon- containing vinyl alcohol copolymer which can act as an emulsifier |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562238A (en) * | 1968-09-16 | 1971-02-09 | Goodrich Co B F | Suspension polymerization process for vinyl chloride polymers |
| DD95106A5 (en) * | 1972-02-28 | 1973-01-12 |
-
1974
- 1974-10-10 TR TR18667A patent/TR18667A/en unknown
- 1974-12-10 IT IT30336/74A patent/IT1026902B/en active
-
1975
- 1975-11-26 ZA ZA757450A patent/ZA757450B/en unknown
- 1975-11-28 CA CA240,699A patent/CA1068046A/en not_active Expired
- 1975-12-02 IL IL48589A patent/IL48589A/en unknown
- 1975-12-04 AU AU87255/75A patent/AU500593B2/en not_active Expired
- 1975-12-05 DK DK552375A patent/DK552375A/en not_active Application Discontinuation
- 1975-12-07 EG EG725/75A patent/EG12460A/en active
- 1975-12-08 GB GB50305/75A patent/GB1496058A/en not_active Expired
- 1975-12-08 PL PL1975185353A patent/PL103792B1/en unknown
- 1975-12-08 BE BE162533A patent/BE836384A/en unknown
- 1975-12-08 CS CS758309A patent/CS195301B2/en unknown
- 1975-12-08 LU LU73949A patent/LU73949A1/xx unknown
- 1975-12-08 FR FR7537461A patent/FR2294189A1/en active Granted
- 1975-12-08 CH CH1594175A patent/CH620231A5/en not_active IP Right Cessation
- 1975-12-09 HU HU75AI00000249A patent/HU172316B/en unknown
- 1975-12-09 NL NL7514358A patent/NL7514358A/en unknown
- 1975-12-09 ES ES443586A patent/ES443586A1/en not_active Expired
- 1975-12-09 DD DD189988A patent/DD122981A5/en unknown
- 1975-12-09 PH PH17849A patent/PH14920A/en unknown
- 1975-12-09 NO NO754158A patent/NO145763C/en unknown
- 1975-12-09 YU YU03119/75A patent/YU311975A/en unknown
- 1975-12-09 SE SE7513874A patent/SE7513874L/en not_active Application Discontinuation
- 1975-12-10 RO RO7584151A patent/RO67271A/en unknown
- 1975-12-10 JP JP50146466A patent/JPS5183686A/en active Pending
- 1975-12-10 BG BG7531747A patent/BG34188A3/en unknown
- 1975-12-10 IN IN2325/CAL/1975A patent/IN144911B/en unknown
- 1975-12-10 DE DE2555568A patent/DE2555568C2/en not_active Expired
- 1975-12-10 IE IE2688/75A patent/IE42205B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IE42205L (en) | 1976-06-10 |
| FR2294189B1 (en) | 1979-06-01 |
| IL48589A0 (en) | 1976-02-29 |
| NL7514358A (en) | 1976-06-14 |
| CH620231A5 (en) | 1980-11-14 |
| JPS5183686A (en) | 1976-07-22 |
| ES443586A1 (en) | 1977-05-01 |
| IN144911B (en) | 1978-07-22 |
| IT1026902B (en) | 1978-10-20 |
| CA1068046A (en) | 1979-12-11 |
| IL48589A (en) | 1979-05-31 |
| TR18667A (en) | 1977-06-23 |
| CS195301B2 (en) | 1980-01-31 |
| FR2294189A1 (en) | 1976-07-09 |
| DK552375A (en) | 1976-06-11 |
| LU73949A1 (en) | 1976-07-01 |
| EG12460A (en) | 1979-03-31 |
| HU172316B (en) | 1978-08-28 |
| SE7513874L (en) | 1976-06-11 |
| BG34188A3 (en) | 1983-07-15 |
| ZA757450B (en) | 1976-11-24 |
| NO754158L (en) | 1976-06-11 |
| DD122981A5 (en) | 1976-11-12 |
| BE836384A (en) | 1976-06-08 |
| IE42205B1 (en) | 1980-06-18 |
| GB1496058A (en) | 1977-12-21 |
| AU500593B2 (en) | 1979-05-24 |
| PH14920A (en) | 1982-01-29 |
| DE2555568C2 (en) | 1982-11-25 |
| PL103792B1 (en) | 1979-07-31 |
| NO145763C (en) | 1982-05-26 |
| AU8725575A (en) | 1977-06-09 |
| RO67271A (en) | 1980-07-15 |
| DE2555568A1 (en) | 1976-06-16 |
| YU311975A (en) | 1983-04-27 |
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