CN112142881B - Method for agglomerating ABS grafted latex and device used by same - Google Patents
Method for agglomerating ABS grafted latex and device used by same Download PDFInfo
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- CN112142881B CN112142881B CN202011129944.0A CN202011129944A CN112142881B CN 112142881 B CN112142881 B CN 112142881B CN 202011129944 A CN202011129944 A CN 202011129944A CN 112142881 B CN112142881 B CN 112142881B
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- 239000004816 latex Substances 0.000 title claims abstract description 34
- 229920000126 latex Polymers 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 53
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 230000015271 coagulation Effects 0.000 claims abstract description 20
- 238000005345 coagulation Methods 0.000 claims abstract description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000000701 coagulant Substances 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 16
- 239000000843 powder Substances 0.000 abstract description 10
- 238000003756 stirring Methods 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 43
- 239000002002 slurry Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
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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
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/22—Coagulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
- B01F25/423—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components
- B01F25/4233—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components using plates with holes, the holes being displaced from one plate to the next one to force the flow to make a bending movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2215—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to a method and a device for condensing ABS grafted latex, and aims to provide a method and a device for condensing ABS grafted latex into powder with uniform particle size by adopting a static mixing mode and a loop type continuous reactor. The method of the invention adopts a static mixing solidification method to coagulate the ABS grafted latex into powder, has short coagulation process flow, does not need rotation and stirring, and can realize uniform coagulation of powder particles and continuous production.
Description
Technical Field
The invention belongs to the technical field of ABS synthetic resin production processes, relates to an ABS grafted latex coagulation method and a device used by the method, and particularly relates to a static mixing four-section temperature control loop type continuous reaction coagulation method.
Technical Field
The ABS resin is a thermoplastic resin material prepared by copolymerizing three monomers of butadiene, styrene and acrylonitrile, has the characteristics of rubber and resin, has better comprehensive mechanical properties and wider application field, and is an important engineering polymer material. The emulsion grafting-bulk SAN blending method is the most widely used process technology for producing ABS resin at present, the method adopts emulsion polymerization technology to produce polydiene latex, then ABS grafting latex is prepared by grafting copolymerization with styrene and acrylonitrile, ABS grafting latex is prepared into ABS grafting powder by utilizing condensation and drying process technology, the ABS grafting powder is blended with SAN resin to produce ABS resin, and the condensation process is the process of separating solid substances from liquid phase in the ABS grafting latex. In general, ABS is produced by adopting a plurality of kettles in series semi-continuous mode, and due to the fact that the volume of a single kettle is large, the mixing of an coagulant and materials is uneven, the operating parameters of each kettle are different, the particle size distribution of the agglomerated ABS powder is uneven, the downstream process can be affected to produce stability, and the performance of a final ABS resin product can be fluctuated due to uneven particle distribution.
Disclosure of Invention
The invention changes the traditional ABS condensation process method, and provides a static mixing four-section temperature control loop type continuous condensation reaction device and a method for producing ABS powder with uniform particle size.
The technical scheme of the invention is as follows:
A static mixing four-section temperature control loop type continuous reaction device for ABS grafted latex coagulation comprises four continuous parts, namely a mixing section, a dispersing section, a flow guiding section and a curing section, wherein the mixing section is a columnar pipe body with the length-diameter ratio (L1: D1) of (5-10: 1), a static mixing dispersing disc is arranged in the mixing section, the dispersing section is in an arc cavity cylinder shape, the arc angle is 120-145 degrees, the flow guiding section is an inclined pipe-shaped distribution disc, the curing section is in a cavity cylinder shape, and the length-diameter ratio (L4: D4) is (1-3: 1).
The static mixing dispersion plate of the mixing section adopts stainless steel sheet single-layer cross arrangement, and each layer is arranged in a staggered way.
The inclined tubular distribution plate of the diversion section is formed by closely arranging six-edge steel pipes.
The port of the mixing section is a material inlet.
The mixing section, the dispersing section, the diversion section and the curing section are all provided with steam inlets.
And a discharge hole is arranged at the tail end of the curing section.
The method for agglomerating the ABS grafted latex by using the static mixing four-section temperature control loop type continuous reaction device comprises the steps of adding the ABS grafted latex, an agglomerating agent and desalted water into a loop type reactor according to the mass ratio of 1 (0.001-0.005) (0.2-1) based on the dry basis of the ABS grafted latex, and controlling the internal temperature of the mixing section to be 60-80 ℃ by adjusting the steam flow to control the temperature; controlling the internal temperature of the dispersing section to be 75-85 ℃; controlling the temperature of the diversion section to be 80-95 ℃; controlling the temperature of the curing section to be 80-95 ℃.
Wherein the coagulant is multivalent metal ion strong acid salt or mixture of multivalent metal ion strong acid salt and medium strong acid with concentration of 10-40%, and comprises one of MgSO 4 solution, mgSO 4 and acetic acid mixed solution, mgSO 4 and sulfuric acid mixed solution, caCl 2 solution, caCl 2 and acetic acid mixed solution, caCl 2 and sulfuric acid mixed solution, and H 2SO4 solution.
As an optimization scheme, static mixing is adopted in the method, and the flow rate of the static mixing material is 2-5 m/s.
The method has the beneficial effects that the ABS grafted latex is coagulated into powder by adopting the method, a static mixing four-stage controlled Wen Huanguan type coagulation process is adopted, stirring is not needed, rotating equipment is not needed, the traditional intermittent reaction kettle coagulation process is broken through, continuous coagulation production can be realized, the particle size and appearance difference of ABS powder among batches are avoided, and the particle size and appearance color of the ABS powder after coagulation are uniform.
Drawings
FIG. 1 is a front view of an apparatus for a coagulation method of ABS graft latex according to the present invention.
FIG. 2 is a top view of a static mixing dispersion disk at the mixing section of an apparatus for the coagulation process of ABS graft latex according to the invention.
FIG. 3 is a top view of a distributor plate of a deflector section inclined tube of an apparatus for the coagulation method of ABS graft latex according to the present invention.
In the figure: ABS grafting latex feed inlet A, coagulant feed inlet B, desalted water feed inlet C, steam inlet D, steam inlet E, steam inlet F, steam inlet G, steam inlet H, ABS slurry discharge port I.
The device comprises a mixing section 1, a dispersing section 2, a curing section 3, a curing section 4, a static mixing dispersing disc 5 and an inclined tube distributing disc 6.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings.
As shown in figures 1-3, the static mixing four-section temperature control loop type continuous reaction device for ABS grafted latex coagulation provided by the invention comprises four continuous parts of a mixing section 1, a dispersing section 2, a diversion section 3 and a curing section 4. The mixing section 1 is a columnar pipe body with the length-diameter ratio (L1: D1) of (5-10: 1), a static mixing dispersion disk 5 is arranged in the mixing section, stainless steel sheets are arranged in a cross shape in a single layer, each layer is arranged in a staggered manner, the stainless steel sheets can be used for efficiently shearing ABS sizing agent, and the staggered-layer distribution can be used for changing the fluid direction to achieve the purpose of rapid dispersion. The dispersing section is in an arc cavity cylinder shape, and the arc angle is 120-145 degrees. The flow guiding section is an inclined tubular distribution disc 6, six-edge steel pipes with the diameter of 50mm are arranged in the flow guiding section, the dispersed slurry flows uniformly through the flow guiding section flow channel, and the fluid is ensured to stably enter the curing section to form spiral rising and fully cured and then discharged. The curing section is in a hollow cylinder shape, and the length-diameter ratio (L4: D4) is (1-3:1).
The port of the mixing section is a material inlet, ABS grafted latex, coagulant and desalted water are added into the reaction device from the port, the mixing section, the dispersing section, the flow guiding section and the curing section are all provided with steam inlets for controlling the temperature of each section, the tail end of the curing section is provided with a discharge port, and ABS slurry is discharged from the discharge port.
Example 1
The ABS grafting latex with solid content of 40% and coagulant with 10% MgSO 4 solution, desalted water with flow rate of 2m/s according to 1:0.001:0.2 are added into a loop reactor, steam flow is regulated, mixing section temperature is controlled to be 60 ℃, dispersing section temperature is controlled to be 75 ℃, curing section temperature is controlled to be 85 ℃, curing section temperature is controlled to be 95 ℃, and ABS slurry particle size distribution at a discharge port of a coagulation device is measured and shown in table 1.
Example 2
The ABS grafting latex has solid content of 45%, the coagulant is 15% MgSO 4 and acetic acid mixed solution, desalted water is added into a loop reactor according to the flow rate of 1:0.002:0.3, the steam flow is regulated, the temperature of the mixing section is controlled to be 70 ℃, the temperature of the dispersing section is controlled to be 85 ℃, the temperature of the curing section is controlled to be 90 ℃, the temperature of the curing section is controlled to be 92 ℃, and the particle size distribution of ABS slurry particles at the discharge port of the coagulation device is measured and shown in Table 1.
Example 3
The ABS grafting latex has 50 percent of solid content, caCl 2 solution with 20 percent of coagulant and desalted water according to the ratio of 1:0.003:0.5, the flow rate of the desalted water is 5m/s, the steam flow is regulated, the temperature of a mixing section is controlled to be 70 ℃, the temperature of a dispersing section is controlled to be 85 ℃, the temperature of a curing section is controlled to be 92 ℃, the temperature of a curing section is controlled to be 95 ℃, and the particle size distribution of ABS slurry particles at a discharge port of a condensing device is measured and is shown in table 1.
Example 4
The solid content of the ABS grafting latex is 40%, caCl 2 solution and sulfuric acid mixed solution with 30% coagulant are added into a loop reactor according to the flow rate of 1:0.004:0.8, the steam flow is regulated, the temperature of a mixing section is controlled to be 72 ℃, the temperature of a dispersing section is controlled to be 80 ℃, the temperature of a curing section is controlled to be 85 ℃, the temperature of a curing section is controlled to be 95 ℃, and the particle size distribution of ABS slurry particles at a discharge port of a condensing device is measured and is shown in table 1.
Example 5
The ABS grafting latex has 43 percent of solid content, 40 percent of coagulant sulfuric acid solution, desalted water is added into a loop reactor according to the ratio of 1:0.005:1, the flow rate is 3m/s, the steam flow is regulated, the temperature of a mixing section is controlled to be 75 ℃, the temperature of a dispersing section is controlled to be 85 ℃, the temperature of a curing section is controlled to be 90 ℃, the temperature of a curing section is controlled to be 95 ℃, and the particle size distribution of the ABS slurry at the discharge port of the coagulation device is measured and shown in table 1.
TABLE 1 ABS slurry particle size distribution Table
Claims (7)
1. The static mixing four-section temperature control loop type continuous reaction device for ABS grafted latex coagulation is characterized by comprising four continuous parts of a mixing section, a dispersing section, a flow guiding section and a curing section, wherein the mixing section is a columnar pipe body with the length-diameter ratio (L1: D1) of (5-10: 1), a static mixing dispersing disc is arranged in the mixing section, the dispersing section is in an arc cavity cylinder shape, the arc angle is 120-145 ℃, the flow guiding section is an inclined pipe-shaped distribution disc, the curing section is in a cavity cylinder shape, and the length-diameter ratio (L4: D4) is (1-3: 1); the mixing section, the dispersing section, the flow guiding section and the curing section are all provided with steam inlets, the steam inlets of the mixing section can adjust the internal temperature of the steam flow control mixing section to be 60-80 ℃, the steam inlets of the dispersing section can adjust the internal temperature of the steam flow control dispersing section to be 75-85 ℃, the steam inlets of the flow guiding section can adjust the temperature of the steam flow control flow guiding section to be 80-95 ℃, and the steam inlets of the curing section can adjust the temperature of the steam flow control curing section to be 80-95 ℃.
2. The static mixing four-section temperature control loop type continuous reaction device for ABS grafted latex coagulation according to claim 1, wherein the static mixing dispersion plates of the mixing section are arranged in a cross shape by adopting stainless steel thin sheets, and each layer is arranged in a staggered manner.
3. The static mixing four-section temperature control loop type continuous reaction device for ABS grafting latex condensation according to claim 2, wherein the inclined tubular distribution plate of the diversion section is formed by closely arranging six-edge steel pipes.
4. A static mixing four-stage temperature controlled loop type continuous reaction apparatus for the coagulation of ABS grafted latex according to claim 3 wherein the ports of the mixing stage are material inlets.
5. A static mixing four-stage temperature controlled loop type continuous reaction device for the coagulation of ABS graft latex as claimed in claim 4, wherein a discharge port is arranged at the tail end of the curing stage.
6. A method for agglomerating ABS grafted latex by using the static mixing four-stage temperature control loop type continuous reaction device as claimed in claim 5, which is characterized in that based on the dry basis of the ABS grafted latex, an agglomerating agent and desalted water are added into a loop type reactor according to the mass ratio of 1 (0.001-0.005): (0.2-1), and the internal temperature of the mixing stage is controlled to be 60-80 ℃ by adjusting the steam flow control temperature; controlling the internal temperature of the dispersing section to be 75-85 ℃; controlling the temperature of the diversion section to be 80-95 ℃; the temperature of the curing section is controlled to be 80-95 ℃, wherein the coagulant comprises one of MgSO 4 solution, mgSO 4 and acetic acid mixed solution, mgSO 4 and sulfuric acid mixed solution, caCl 2 solution, caCl 2 and acetic acid mixed solution, caCl 2 and sulfuric acid mixed solution and H 2SO4 solution.
7. The process for agglomerating ABS graft latex according to claim 6, wherein said material is fed into said loop reactor at a flow rate of 2 to 5 m/s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129944.0A CN112142881B (en) | 2020-10-21 | 2020-10-21 | Method for agglomerating ABS grafted latex and device used by same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011129944.0A CN112142881B (en) | 2020-10-21 | 2020-10-21 | Method for agglomerating ABS grafted latex and device used by same |
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| CN112142881B true CN112142881B (en) | 2024-05-03 |
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| CN112876586B (en) * | 2021-01-18 | 2022-11-08 | 万华化学(四川)有限公司 | Method for coagulating ABS graft latex |
| CN113416267B (en) * | 2021-07-28 | 2022-09-20 | 万华化学(四川)有限公司 | ABS graft latex coagulation method for improving biodegradability of process sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890929A (en) * | 1987-04-21 | 1990-01-02 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Method and apparatus for manufacturing coagulated grains from polymer latex |
| CN101570588A (en) * | 2008-04-30 | 2009-11-04 | 中国石油天然气股份有限公司 | Method for preparing bimodal distribution ABS |
| CN103193940A (en) * | 2012-01-10 | 2013-07-10 | 李祎山 | Production technology of ABS resin |
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| KR102290712B1 (en) * | 2017-11-08 | 2021-08-19 | 주식회사 엘지화학 | Apparatus and method for preparing of polymer latex |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890929A (en) * | 1987-04-21 | 1990-01-02 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Method and apparatus for manufacturing coagulated grains from polymer latex |
| CN101570588A (en) * | 2008-04-30 | 2009-11-04 | 中国石油天然气股份有限公司 | Method for preparing bimodal distribution ABS |
| CN103193940A (en) * | 2012-01-10 | 2013-07-10 | 李祎山 | Production technology of ABS resin |
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