CN102492066A - Method for preparing polyvinyl chloride by suspension polymerization - Google Patents
Method for preparing polyvinyl chloride by suspension polymerization Download PDFInfo
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- CN102492066A CN102492066A CN2011104049456A CN201110404945A CN102492066A CN 102492066 A CN102492066 A CN 102492066A CN 2011104049456 A CN2011104049456 A CN 2011104049456A CN 201110404945 A CN201110404945 A CN 201110404945A CN 102492066 A CN102492066 A CN 102492066A
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Abstract
The invention discloses a method for preparing polyvinyl chloride by suspension polymerization. The dispersant adopted by the method is composed of a dispersant A and a dispersant B, wherein the dispersant A is KH-17 polyvinyl alcohol; and the dispersant B comprises L-9-78 polyvinyl alcohol, LW-200 polyvinyl alcohol and LM-10HD polyvinyl alcohol. The polyvinyl chloride prepared by the existing polyvinyl chloride preparation method has higher powder rate, so a dust removal cloth bag on the top of a drying storage bin has to be replaced within a week; and when the method disclosed by the invention is used for preparing the polyvinyl chloride, the cloth bag needs to be replaced after more than one month, the powder rate is greatly reduced, and no coarse material is generated basically. The method disclosed by the invention also enhances the single-kettle yield.
Description
Technical field
Patent of the present invention relates to the Production of PVC technology, particularly a kind of method for preparing SE through suspension polymerization.
Background technology
The SE that existing suspension polymerization is produced exists powder many, the problem that the PVC particle is too small.Powder often stops up the dust-removal cloth-bag on the dry feed bin top, all need clear up once weekly, and very easily fly out, and product is run off, and cause environmental pollution.
Summary of the invention
For solving the problem that exists in the prior art, the present invention adopts new SE preparation technology, has reduced the powder rate that PVC produces, and has improved output.
Technical scheme of the present invention is: a kind of suspension polymerization prepares the method for SE, and the dispersion agent that is adopted is dispersant A and dispersant B, and wherein dispersant A is a KH-17 type Z 150PH; Dispersant B comprises L-9-78 type Z 150PH, LW-200 type Z 150PH and LM-10HD type Z 150PH.
Said dispersant B comprises the L-9-78 type Z 150PH of 12-18 weight part, the LW-200 type Z 150PH of 15-20 weight part and the LM-10HD type Z 150PH of 1-5 weight part.
The adding method of said dispersion agent is for being sequentially added into dispersant A and dispersant B.
Said suspension polymerization prepares the initiator that adopts in the method for SE and comprises the peroxo-neodecanoic acid isopropyl benzene ester (CNP) of 10-20 weight part and the peroxy dicarbonate 2-diethyl acetamidomalonate (EHP) of 80-90 weight part.
The temperature of said polyreaction is 50-55 ℃.
Said dispersant A is a KH-17 type Vilaterm alcohol and water, and its mass concentration is 3-5%.
Said dispersant B comprises the L-978 type Z 150PH of 15 weight parts, the LW-200 type Z 150PH of 18 weight parts, the LM-10HD type Z 150PH of 2 weight parts and the water of 600 weight parts.
Said initiator comprises that mass concentration is that 40% peroxo-neodecanoic acid isopropyl benzene ester 14 weight parts, mass concentration are 40% peroxy dicarbonate 2-diethyl acetamidomalonate 84 weight parts and water 136 weight parts.
Said suspension polymerization prepares SE at 105m
3Reaction kettle in carry out.
The powder material of polyvinyl chloride rate that existing SE preparation method prepares is higher, and the dust-removal cloth-bag on the dry feed bin top will be changed once within one week; And SE one wheat harvesting period that adopts method of the present invention to prepare just need be changed cloth bag, and the powder rate reduces greatly, does not have coarse fodder to produce basically.And method of the present invention has also improved output per single reactor.
Embodiment
Embodiment 1
Technical scheme of the present invention is: a kind of suspension polymerization prepares the method for SE, comprises the steps:
1) in reaction kettle, adds simultaneously to mix behind entry and the vinyl chloride monomer and stir;
2) order adds dispersant A and dispersant B in reaction kettle, and the prescription of dispersant A is KH-17 type Z 150PH (the KH-17 type Z 150PH that Japanese synthetic chemistry company produces, alcoholysis degree 72.8-81.5mol%, solid) and water, and its mass concentration is 3%; The prescription of dispersant B is L-9-78 type Z 150PH (the L-9-78 type Z 150PH that Japanese synthetic chemistry company produces, alcoholysis degree 76.5-79mol%, solid) 12 weight parts; The LW-200 type Z 150PH that LW-200 type Z 150PH Japan synthetic chemistry company produces; Alcoholysis degree 46-53mol%, 40% concentration liquid) 15 weight parts, LM-10HD type Z 150PH (the LM-10HD type Z 150PH that Japanese Kuraray company produces; Alcoholysis degree 38-42mol%, solid) 1 weight part and water 600 weight parts.
3) in reaction kettle, add initiator and carry out polyreaction acquisition SE.Initiator comprises that mass concentration is that 40% peroxo-neodecanoic acid isopropyl benzene ester 10 weight parts, mass concentration are 40% peroxy dicarbonate 2-diethyl acetamidomalonate 80 weight parts and water 136 weight parts.The temperature of polyreaction is controlled at 50 ℃.
5) when needs reclaim SE, in reaction kettle, add terminator, the time that terminator adds can be confirmed according to response situation with amount those skilled in the art, be prior art.
Embodiment 2
Technical scheme of the present invention is: a kind of suspension polymerization prepares the method for SE, comprises the steps:
1) in reaction kettle, adds simultaneously to mix behind entry and the vinyl chloride monomer and stir;
2) order adds dispersant A and dispersant B in reaction kettle, and the prescription of dispersant A is a KH-17 type Vilaterm alcohol and water, and its mass concentration is 5%; The prescription of dispersant B is L-9-78 type Z 150PH 18 weight parts, LW-200 Z 150PH 20 weight parts, LM-10HD type Z 150PH 5 weight parts and water 600 weight parts;
3) in reaction kettle, add initiator and carry out polyreaction acquisition SE.Initiator comprises that mass concentration is that 40% peroxo-neodecanoic acid isopropyl benzene ester 20 weight parts and mass concentration are 40% peroxy dicarbonate 2-diethyl acetamidomalonate (EHP) 90 weight parts and water 136 weight parts.Temperature of reaction is 55 ℃.
4) when needs reclaim SE, in reaction kettle, add terminator, the time that terminator adds can be confirmed according to response situation with amount those skilled in the art, be prior art.
Embodiment 3
Technical scheme of the present invention is: a kind of suspension polymerization prepares the method for SE, comprises the steps:
1) in reaction kettle, adds simultaneously to mix behind entry and the vinyl chloride monomer and stir;
2) order adds dispersant A and dispersant B in reaction kettle, and the prescription of dispersant A is a KH-17 type Vilaterm alcohol and water, and its mass concentration is 4%; Comprise the LW-200 type Z 150PH of 15 weight part L-9-78 type Z 150PH, 18 weight parts, the LM-10HD type Z 150PH of 2 weight parts and the water of 600 weight parts;
3) in reaction kettle, add initiator and carry out polyreaction acquisition SE.Initiator comprises that initiator comprises that mass concentration is that 40% peroxo-neodecanoic acid isopropyl benzene ester 14 weight parts, mass concentration are 40% peroxy dicarbonate 2-diethyl acetamidomalonate 84 weight parts and water 136 weight parts.Temperature of reaction is 53 ℃.
4) when needs reclaim SE, in reaction kettle, add terminator, the time that terminator adds can be confirmed according to response situation with amount those skilled in the art, be prior art.
Embodiment 4
Present embodiment adopts 105m
3Still, then concrete working method is following:
1) in reaction kettle, add simultaneously to mix behind entry and the vinyl chloride monomer and stir, water is no salt solution, and the vinyl chloride monomer add-on is 40m
3
2) order adds dispersant A and dispersant B in reaction kettle, and dispersant A and dispersant B all are configured in configured slot separately earlier, and the amount of configuration is KH-17 type Z 150PH 500Kg, water 12000Kg specifically, solute concentration 4%.Dispersant B is L-9-78 type Z 150PH 150Kg when configuration, LW-200 type Z 150PH 180Kg, LM-10HD type Z 150PH 20Kg and water 6000Kg, total concentration of solutes 3.8%.And the add-on that specifically joins in the reaction kettle is dispersant A solute add-on 31.5Kg, is solution 787.5Kg according to concentration conversion; Dispersant B solute add-on 13.7Kg is solution 360.5Kg according to concentration conversion;
3) in reaction kettle, add initiator and carry out polyreaction, initiator also carries out first configuration at configured slot, and the concrete prescription of configured slot is water 1360kg; CNP140kg; EHP840kg is 25.5Kg and the add-on in reaction kettle is an initiator solute amount, is solution 152.7Kg according to concentration conversion; Temperature of reaction is 53 ℃;
4) when needs reclaim SE, in reaction kettle, add terminator 100kg, reaction terminating reclaims SE.
According to above-mentioned process method, the SE that present embodiment is produced after 0.063mm sieve aperture check, screenings from before 90% risen to 97%, reduced the powder rate significantly; After 0.25mm sieve aperture check, it is 1.0% constant that screenings remains on, and do not have coarse fodder to produce.And output per single reactor from before 28 tons be increased to 30.5 tons, ageing whiteness also increases, from before 73 risen to 77.
Above-mentioned at 105m
3Reaction kettle in the preparation method that reacts can in the DCS of automatic production (dcs), be provided with, see table:
Table 1DCS program is provided with table
Claims (9)
1. a suspension polymerization prepares the method for SE, it is characterized in that the dispersion agent that is adopted is dispersant A and dispersant B, and wherein dispersant A is a KH-17 type Z 150PH; Dispersant B comprises L-9-78 type Z 150PH, LW-200 type Z 150PH and LM-10HD type Z 150PH.
2. suspension polymerization according to claim 1 prepares the method for SE; It is characterized in that said dispersant B comprises the L-9-78 type Z 150PH of 12-18 weight part, the LW-200 type Z 150PH of 15-20 weight part and the LM-10HD type Z 150PH of 1-5 weight part.
3. suspension polymerization according to claim 1 prepares the method for SE; It is characterized in that said suspension polymerization prepares the initiator that adopts in the method for SE and comprises the peroxo-neodecanoic acid isopropyl benzene ester of 10-20 weight part and the peroxy dicarbonate 2-diethyl acetamidomalonate of 80-90 weight part.
4. suspension polymerization according to claim 1 prepares the method for SE, it is characterized in that, dispersant A is a KH-17 type Vilaterm alcohol and water, and its mass concentration is 3-5%.
5. suspension polymerization according to claim 2 prepares the method for SE; It is characterized in that said dispersant B comprises the LW-200 type Z 150PH of 15 weight part L-9-78 type Z 150PH, 18 weight parts, the LM-10HD type Z 150PH of 2 weight parts and the water of 600 weight parts.
6. suspension polymerization according to claim 3 prepares the method for SE; It is characterized in that said initiator comprises that mass concentration is that 40% peroxo-neodecanoic acid isopropyl benzene ester 14 weight parts, mass concentration are 40% peroxy dicarbonate 2-diethyl acetamidomalonate 84 weight parts and water 136 weight parts.
7. suspension polymerization according to claim 1 prepares the method for SE, it is characterized in that, the adding method of said dispersion agent is for being sequentially added into dispersant A and dispersant B.
8. suspension polymerization according to claim 1 prepares the method for SE, it is characterized in that, the temperature of said polyreaction is 50-55 ℃.
9. suspension polymerization according to claim 1 prepares the method for SE, it is characterized in that, said polyreaction is at 105m
3Reaction kettle in carry out.
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| CN 201110404945 CN102492066B (en) | 2011-12-08 | 2011-12-08 | Method for preparing polyvinyl chloride by suspension polymerization |
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| CN 201110404945 CN102492066B (en) | 2011-12-08 | 2011-12-08 | Method for preparing polyvinyl chloride by suspension polymerization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106964A1 (en) * | 2014-12-31 | 2016-07-07 | 青岛威德森贸易有限公司 | Method for preparing polyvinyl chloride by suspension and polymerization, and feeding device |
| CN107057216A (en) * | 2016-12-21 | 2017-08-18 | 马鞍山瑞美塑业有限公司 | A kind of PVC modified plastics |
| CN108530569A (en) * | 2017-12-28 | 2018-09-14 | 新疆华泰重化工有限责任公司 | A kind of 110m3The method that polymeric kettle produces SG-5 type polyvinyl chloride |
| CN113980161A (en) * | 2021-11-17 | 2022-01-28 | 新疆中泰化学阜康能源有限公司 | Method for improving production efficiency of polyvinyl chloride composite resin |
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| US4749757A (en) * | 1986-08-21 | 1988-06-07 | Exxon Chemical Patents Inc. | High bulk density PVC resin suspension polymerization with inhibitor |
| JPH10101715A (en) * | 1996-09-27 | 1998-04-21 | Chisso Corp | Production of vinyl chloride polymer |
| CN1389483A (en) * | 2002-06-25 | 2003-01-08 | 上海氯碱化工股份有限公司 | Suspension polymerization process of preparing polyvinyl chloride resin with high molecular weight |
| CN1389482A (en) * | 2002-06-25 | 2003-01-08 | 上海氯碱化工股份有限公司 | Suspension polymerization process of preparing polyvinyl chloride resin for extruding to form hard building material product |
| CN1657545A (en) * | 2004-07-30 | 2005-08-24 | 上海天原集团天原化工有限公司 | Process for preparating medical polyvinyl chioride resin with high polymerization |
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2011
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| US4749757A (en) * | 1986-08-21 | 1988-06-07 | Exxon Chemical Patents Inc. | High bulk density PVC resin suspension polymerization with inhibitor |
| JPH10101715A (en) * | 1996-09-27 | 1998-04-21 | Chisso Corp | Production of vinyl chloride polymer |
| CN1389483A (en) * | 2002-06-25 | 2003-01-08 | 上海氯碱化工股份有限公司 | Suspension polymerization process of preparing polyvinyl chloride resin with high molecular weight |
| CN1389482A (en) * | 2002-06-25 | 2003-01-08 | 上海氯碱化工股份有限公司 | Suspension polymerization process of preparing polyvinyl chloride resin for extruding to form hard building material product |
| CN1657545A (en) * | 2004-07-30 | 2005-08-24 | 上海天原集团天原化工有限公司 | Process for preparating medical polyvinyl chioride resin with high polymerization |
Non-Patent Citations (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106964A1 (en) * | 2014-12-31 | 2016-07-07 | 青岛威德森贸易有限公司 | Method for preparing polyvinyl chloride by suspension and polymerization, and feeding device |
| CN105801732A (en) * | 2014-12-31 | 2016-07-27 | 青岛威德森贸易有限公司 | Polyvinyl chloride suspension polymerization preparation method and feeding device |
| US10308739B2 (en) | 2014-12-31 | 2019-06-04 | Amos Chemicals Inc. | Method for preparing polyvinyl chloride by suspension and polymerization, and feeding device |
| CN107057216A (en) * | 2016-12-21 | 2017-08-18 | 马鞍山瑞美塑业有限公司 | A kind of PVC modified plastics |
| CN108530569A (en) * | 2017-12-28 | 2018-09-14 | 新疆华泰重化工有限责任公司 | A kind of 110m3The method that polymeric kettle produces SG-5 type polyvinyl chloride |
| CN113980161A (en) * | 2021-11-17 | 2022-01-28 | 新疆中泰化学阜康能源有限公司 | Method for improving production efficiency of polyvinyl chloride composite resin |
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