PT96105A - Processo para inibir a acumulacao de polimero em permutadores de calor durante a polimerizacao de alfa-olefinas - Google Patents
Processo para inibir a acumulacao de polimero em permutadores de calor durante a polimerizacao de alfa-olefinas Download PDFInfo
- Publication number
- PT96105A PT96105A PT96105A PT9610590A PT96105A PT 96105 A PT96105 A PT 96105A PT 96105 A PT96105 A PT 96105A PT 9610590 A PT9610590 A PT 9610590A PT 96105 A PT96105 A PT 96105A
- Authority
- PT
- Portugal
- Prior art keywords
- heat exchanger
- compressor
- process according
- ethoxybenzoate
- ethyl
- Prior art date
Links
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
- C08F2/00—Processes of polymerisation
- C08F2/34—Polymerisation in gaseous state
-
- 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
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- 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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
-
- 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
- C08F2/002—Scale prevention in a polymerisation reactor or its auxiliary parts
- C08F2/007—Scale prevention in the auxiliary parts
-
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/901—Monomer polymerized in vapor state in presence of transition metal containing catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Claims (2)
14
de calor como ensaio, e o coeficiente de transferência de calor realmente aumentou lentamente durante toda a experiência. De acordo com a inspecção, verificou-se que as superfícies interiores da maior parte dos tubos do permutador de calor tinham uma camada de polímero muito fina. Não havia quaisquer sinais de AFL-40 em 50% dos tubos que foram tratados antes da experiência. Não havia diferença na aparência dos tubos tratados e dos tubos não-tratados. Não foi necessário limpar o permutador de calor antes da próxima corrida planeada. REIVINDICAÇÕES 1. * -Processo para inibir a acumulação de polímero num permutador de calor durante a polimerização de alfa-olefinas em fase gasosa, caracterizado pelo facto de compreender a introdução de paraetoxiben-zoato de etilo a montante do permutador de calor numa quantidade suficiente para inibir a acumulação de polímero. 2. ‘-Processo de acordo com a reivindicação 1, caracterizado pelo facto de as referidas alfa-olefinas polimerizadas serem copolímeros de polipropileno resistentes ao choque. !
«
15 3.*—Processo de acordo com a reivindicação 1, caracterizado pelo facto de a quantidade de etoxibenzoato de sódio empregada estar compreendida dentro do intervalo de cerca de 5 a cerca de 20 partes em peso de etoxibenzoato de etilo por milhão de partes em peso de alfa-olefinas polimerizadas. 4. * —Processo de acordo com a reivindicação 1, caracterizado pelo facto de a quantidade de etoxibenzoato de etilo empregada estar compreendida dentro do intervalo de cerca de 6 a cerca de 8 partes em peso de etoxibenzoato de etilo por milhão de partes em peso de alfa--olefinas polimerizadas. 5. ®-Processo de acordo com a reivindicação 1, caracterizado pelo facto de se montar um compressor a montante do mencionado permutador de calor e se introduzir o citado etoxibenzoato de etilo a montante do referido compressor. 6. ®—Processo de acordo com a reivindicação 1, caracterizado pelo facto de se montar um compressor a montante do referido permutador de calor e se introduzir o mencionado etoxibenzoato de etilo no citado compressor. 7. *—Processo de acordo com a reivindicação 1, caracterizado pelo facto de se montar um compressor a montante do referido permutador de calor e se introduzir o mencionado etoxibenzoato de etilo entre o citado compressor e o referido permutador de calor. 8. * - Processo para inibir a acumulação de polímero num permutador de calor durante a polimerização de alfa-olefinas em fase gasosa de modo a obterem-se copolímeros de polipropileno resistentes ao choque, 16
caracterizado pelo facto de compreender a introdução de para-etoxibenzoato de etilo a montante do mencionado permutador de calor numa quantidade compreendida entre cerca de 5 e cerca de 20 partes em peso do citado etoxibenzoato de etilo por milhão de partes em peso dos referidos copolímeros de polipropileno resistentes ao choque. 9. *—Processo de acordo com a reivindicação 8, caracterizado pelo facto de se montar um compressor a montante do mencionado permutador de calor e se introduzir o citado etoxibenzoato de etilo no referido compressor.
10. Processo de acordo com a reivindicação 8, caracterizado pelo facto de se montar um compressor a montante do mencionado permutador de calor e se introduzir o citado etoxibenzoato de etilo entre o referido compressor e o mencionado permutador de calor. Lisboa, 6 de Dezembro de 1990 i0 Agente Oficial da Propriedade Industrial
Américo da Silva Carvalho Agioto Ofioitl d· Propriídodt ladoOtriol R. Castilho, 201-3. E.-1000USBOA Telefs. 65 13 39-654613
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/447,049 US5037905A (en) | 1989-12-07 | 1989-12-07 | Process for reducing polymer build-up in heat exchangers during polymerization of alpha-olefins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT96105A true PT96105A (pt) | 1991-09-30 |
Family
ID=23774801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT96105A PT96105A (pt) | 1989-12-07 | 1990-12-06 | Processo para inibir a acumulacao de polimero em permutadores de calor durante a polimerizacao de alfa-olefinas |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US5037905A (pt) |
| EP (1) | EP0431626B1 (pt) |
| JP (1) | JP2512344B2 (pt) |
| KR (1) | KR950008719B1 (pt) |
| CN (1) | CN1029619C (pt) |
| AR (1) | AR244706A1 (pt) |
| AT (1) | ATE121425T1 (pt) |
| AU (1) | AU625791B2 (pt) |
| BR (1) | BR9006060A (pt) |
| CA (1) | CA2031699C (pt) |
| DE (1) | DE69018785T2 (pt) |
| DK (1) | DK0431626T3 (pt) |
| ES (1) | ES2070983T3 (pt) |
| FI (1) | FI906024L (pt) |
| GR (1) | GR3015906T3 (pt) |
| HU (1) | HUT57799A (pt) |
| MY (1) | MY104558A (pt) |
| PT (1) | PT96105A (pt) |
| ZA (1) | ZA909812B (pt) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194526A (en) * | 1992-07-30 | 1993-03-16 | Union Carbide Chemicals & Plastics Technology Corporation | Process for producing sticky polymers |
| US5200502A (en) * | 1992-08-26 | 1993-04-06 | Union Carbide Chemicals & Plastics Technology Corporation | Deactivator reagent for olefin polymerization catalysts |
| US5733988A (en) * | 1994-06-29 | 1998-03-31 | Union Carbide Chemicals & Plastics Technology Corporation | Process for reducing polymer build-up in recycle lines and heat exchangers during polymerizations employing butadiene, isoprene, and/or styrene |
| US5625012A (en) * | 1994-06-29 | 1997-04-29 | Union Carbide Chemicals & Plastics Technology Corporation | Process for reducing polymer build-up in recycle lines and heat exchangers during polymerization of alpha olefins |
| US6124230A (en) * | 1995-07-13 | 2000-09-26 | Exxon Chemical Patents, Inc. | Polymerization catalyst systems, their production and use |
| US6140432A (en) * | 1995-07-13 | 2000-10-31 | Exxon Chemical Patents Inc. | Polymerization catalyst systems, their production and use |
| USH1722H (en) * | 1995-05-05 | 1998-04-07 | Goode; Mark Gregory | Process for producing polypropylene impact block copolymers |
| DE19800020A1 (de) * | 1998-01-05 | 1999-07-08 | Basf Ag | Kontinuierliches Gasphasenpolymerisationsverfahren |
| US6201076B1 (en) | 1999-04-29 | 2001-03-13 | Equistar Chemicals, L.P. | Olefin polymerization process with fatty amine additives for improved activity and reduced fouling |
| FI991015A0 (fi) | 1999-05-04 | 1999-05-04 | Borealis As | Menetelmä alfa-olefiinipolymeerien valmistamiseksi |
| US6884749B2 (en) | 2002-10-17 | 2005-04-26 | Equistar Chemicals L.P. | Supported catalysts which reduce sheeting in olefin polymerization, process for the preparation and the use thereof |
| US7332070B2 (en) * | 2003-07-15 | 2008-02-19 | Mitsui Chemicals, Inc. | Method of preventing heat exchanger fouling |
| US7754830B2 (en) | 2004-05-20 | 2010-07-13 | Univation Technologies, Llc | Polymerization reaction monitoring with determination of induced condensing agent concentration for preventing discontinuity events |
| AU2005245921B2 (en) * | 2004-05-20 | 2007-11-15 | Univation Technologies, Llc | Gas olefin polymerization process |
| US7683140B2 (en) | 2004-05-20 | 2010-03-23 | Univation Technologies, Llc | Method for determining temperature value indicative of resin stickiness from data generated by polymerization reaction monitoring |
| US7253239B2 (en) * | 2004-10-29 | 2007-08-07 | Westlake Longview Corporation | Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process |
| CN101511877B (zh) * | 2006-09-07 | 2012-09-05 | 尤尼威蒂恩技术有限责任公司 | 由聚合反应监测产生的数据确定指示树脂粘附的温度值的方法 |
| ES2405556T3 (es) * | 2006-09-07 | 2013-05-31 | Univation Technologies, Llc | Métodos para determinación en línea del grado de pegajosidad de una resina utilizando un modelo para depresión de la temperatura de iniciación de la fusión |
| EP2330135B1 (en) * | 2009-12-02 | 2012-11-07 | Borealis AG | Process for producing polyolefins |
| EP3137516B1 (en) | 2015-03-25 | 2018-04-25 | Basell Polyolefine GmbH | Continuous gas-phase polymerization processes |
| EP3592780B1 (en) | 2017-03-09 | 2025-07-23 | ExxonMobil Chemical Patents Inc. | Process for producing polyethylene |
| KR102421977B1 (ko) | 2018-12-19 | 2022-07-18 | 주식회사 엘지화학 | 방향족 비닐 화합물-비닐시안 화합물 중합체의 제조방법 및 제조장치 |
| EP3868793B1 (en) | 2020-02-24 | 2026-01-07 | Borealis GmbH | Process for producing alpha-olefin polymers in a multistage polymerization process |
| EP4631613A1 (en) * | 2024-04-11 | 2025-10-15 | Lummus Novolen Technology GmbH | Process and system for transferring polymer particles between polymerization zones arranged in series |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611908A (en) * | 1979-07-11 | 1981-02-05 | Mitsui Petrochem Ind Ltd | Preparation of olefin polymer |
| US4675368A (en) * | 1982-10-04 | 1987-06-23 | Solvay & Cie. | Process for inhibiting crust formation in reactors during alpha-olefin prepolymerization modification of Ziegler catalyst |
| US4520163A (en) * | 1984-01-09 | 1985-05-28 | Shell Oil Company | Process of sequentially copolymerizing propylene-ethylene copolymers and catalyst therefor |
| US4981929A (en) * | 1986-06-23 | 1991-01-01 | Union Carbide Chemicals And Plastics Company, Inc. | Catalyst productivity in the polymerization of olefins |
| EP0282929B2 (en) * | 1987-03-14 | 1997-10-22 | Mitsubishi Kasei Corporation | Method for producing a propylene-alpha-olefin block copolymer |
| ZA893526B (en) * | 1988-05-12 | 1990-01-31 | Union Carbide Corp | Process for the preparation of random copolymers |
| US4956427A (en) * | 1988-12-23 | 1990-09-11 | Union Carbide Chemicals And Plastics Company Inc. | Process for reducing polymer build-up in polymerization equipment during polymerization of alpha-olefins |
-
1989
- 1989-12-07 US US07/447,049 patent/US5037905A/en not_active Expired - Lifetime
-
1990
- 1990-11-29 BR BR909006060A patent/BR9006060A/pt not_active IP Right Cessation
- 1990-12-05 FI FI906024A patent/FI906024L/fi not_active IP Right Cessation
- 1990-12-06 AT AT90123464T patent/ATE121425T1/de not_active IP Right Cessation
- 1990-12-06 KR KR1019900019984A patent/KR950008719B1/ko not_active Expired - Fee Related
- 1990-12-06 CA CA002031699A patent/CA2031699C/en not_active Expired - Fee Related
- 1990-12-06 CN CN90110405A patent/CN1029619C/zh not_active Expired - Fee Related
- 1990-12-06 ZA ZA909812A patent/ZA909812B/xx unknown
- 1990-12-06 HU HU908100A patent/HUT57799A/hu unknown
- 1990-12-06 ES ES90123464T patent/ES2070983T3/es not_active Expired - Lifetime
- 1990-12-06 JP JP2405352A patent/JP2512344B2/ja not_active Expired - Lifetime
- 1990-12-06 DE DE69018785T patent/DE69018785T2/de not_active Expired - Lifetime
- 1990-12-06 MY MYPI90002147A patent/MY104558A/en unknown
- 1990-12-06 DK DK90123464.1T patent/DK0431626T3/da active
- 1990-12-06 PT PT96105A patent/PT96105A/pt not_active Application Discontinuation
- 1990-12-06 AR AR90318548A patent/AR244706A1/es active
- 1990-12-06 EP EP90123464A patent/EP0431626B1/en not_active Expired - Lifetime
- 1990-12-06 AU AU67785/90A patent/AU625791B2/en not_active Ceased
-
1995
- 1995-04-20 GR GR950400886T patent/GR3015906T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES2070983T3 (es) | 1995-06-16 |
| JP2512344B2 (ja) | 1996-07-03 |
| FI906024A0 (fi) | 1990-12-05 |
| DE69018785T2 (de) | 1995-08-24 |
| FI906024A7 (fi) | 1991-06-08 |
| AU6778590A (en) | 1991-06-13 |
| JPH0413703A (ja) | 1992-01-17 |
| KR950008719B1 (ko) | 1995-08-04 |
| CA2031699A1 (en) | 1991-06-08 |
| AR244706A1 (es) | 1993-11-30 |
| HU908100D0 (en) | 1991-06-28 |
| KR910011923A (ko) | 1991-08-07 |
| HUT57799A (en) | 1991-12-30 |
| CN1054602A (zh) | 1991-09-18 |
| ATE121425T1 (de) | 1995-05-15 |
| US5037905A (en) | 1991-08-06 |
| ZA909812B (en) | 1991-10-30 |
| CA2031699C (en) | 1996-12-24 |
| CN1029619C (zh) | 1995-08-30 |
| MY104558A (en) | 1994-04-30 |
| FI906024L (fi) | 1991-06-08 |
| EP0431626A1 (en) | 1991-06-12 |
| DK0431626T3 (da) | 1995-05-08 |
| AU625791B2 (en) | 1992-07-16 |
| EP0431626B1 (en) | 1995-04-19 |
| GR3015906T3 (en) | 1995-07-31 |
| BR9006060A (pt) | 1991-09-24 |
| DE69018785D1 (de) | 1995-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19910430 |
|
| FC3A | Refusal |
Effective date: 19970226 |