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) | FI906024A (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 (23)
| 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 |
| 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 |
| 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 |
| 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 |
| CN100471875C (zh) * | 2003-07-15 | 2009-03-25 | 三井化学株式会社 | 热交换器的积垢防止方法 |
| 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 |
| 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 |
| CA2566855A1 (en) * | 2004-05-20 | 2005-12-01 | Robert O. Hagerty | Gas olefin polymerization process |
| US7253239B2 (en) * | 2004-10-29 | 2007-08-07 | Westlake Longview Corporation | Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process |
| JP2010502812A (ja) * | 2006-09-07 | 2010-01-28 | ユニベーション・テクノロジーズ・エルエルシー | 溶融開始温度の降下に対するモデルを用いた樹脂粘着性の程度のオンライン決定のための方法 |
| BRPI0716245B1 (pt) * | 2006-09-07 | 2018-07-31 | Univation Technologies, Llc | Método para determinação do valor da temperatura, indicativo de pegajosidade de resina, a partir de dados gerados por monitoração da reação de polimerização |
| EP2330135B1 (en) * | 2009-12-02 | 2012-11-07 | Borealis AG | Process for producing polyolefins |
| BR112017018424B1 (pt) | 2015-03-25 | 2021-11-03 | Basell Polyolefine Gmbh | Processo contínuo para a preparação de homopolímeros de etileno ou copolímeros de etileno |
| WO2018164798A1 (en) | 2017-03-09 | 2018-09-13 | Exxonmobil Chemical Patents Inc. | Process for producing polyethylene polymers |
| KR102421977B1 (ko) | 2018-12-19 | 2022-07-18 | 주식회사 엘지화학 | 방향족 비닐 화합물-비닐시안 화합물 중합체의 제조방법 및 제조장치 |
| EP3868793A1 (en) * | 2020-02-24 | 2021-08-25 | Borealis AG | Process for producing alpha-olefin polymers in a multistage polymerization process |
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 |
| ATE103617T1 (de) * | 1988-05-12 | 1994-04-15 | Union Carbide Corp | Verfahren zur herstellung statistischer copolymere. |
| 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/FI906024A/fi not_active IP Right Cessation
- 1990-12-06 ZA ZA909812A patent/ZA909812B/xx unknown
- 1990-12-06 AU AU67785/90A patent/AU625791B2/en not_active Ceased
- 1990-12-06 CA CA002031699A patent/CA2031699C/en not_active Expired - Fee Related
- 1990-12-06 DE DE69018785T patent/DE69018785T2/de not_active Expired - Lifetime
- 1990-12-06 AT AT90123464T patent/ATE121425T1/de not_active IP Right Cessation
- 1990-12-06 PT PT96105A patent/PT96105A/pt not_active Application Discontinuation
- 1990-12-06 KR KR1019900019984A patent/KR950008719B1/ko not_active IP Right Cessation
- 1990-12-06 JP JP2405352A patent/JP2512344B2/ja 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 ES ES90123464T patent/ES2070983T3/es not_active Expired - Lifetime
- 1990-12-06 EP EP90123464A patent/EP0431626B1/en not_active Expired - Lifetime
- 1990-12-06 AR AR90318548A patent/AR244706A1/es active
- 1990-12-06 HU HU908100A patent/HUT57799A/hu unknown
- 1990-12-06 CN CN90110405A patent/CN1029619C/zh not_active Expired - Fee Related
-
1995
- 1995-04-20 GR GR950400886T patent/GR3015906T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE121425T1 (de) | 1995-05-15 |
| BR9006060A (pt) | 1991-09-24 |
| AU625791B2 (en) | 1992-07-16 |
| JP2512344B2 (ja) | 1996-07-03 |
| HU908100D0 (en) | 1991-06-28 |
| CN1054602A (zh) | 1991-09-18 |
| GR3015906T3 (en) | 1995-07-31 |
| KR950008719B1 (ko) | 1995-08-04 |
| ZA909812B (en) | 1991-10-30 |
| DK0431626T3 (da) | 1995-05-08 |
| FI906024A0 (fi) | 1990-12-05 |
| US5037905A (en) | 1991-08-06 |
| DE69018785D1 (de) | 1995-05-24 |
| AU6778590A (en) | 1991-06-13 |
| DE69018785T2 (de) | 1995-08-24 |
| EP0431626A1 (en) | 1991-06-12 |
| EP0431626B1 (en) | 1995-04-19 |
| AR244706A1 (es) | 1993-11-30 |
| CA2031699A1 (en) | 1991-06-08 |
| MY104558A (en) | 1994-04-30 |
| FI906024A (fi) | 1991-06-08 |
| ES2070983T3 (es) | 1995-06-16 |
| HUT57799A (en) | 1991-12-30 |
| JPH0413703A (ja) | 1992-01-17 |
| CN1029619C (zh) | 1995-08-30 |
| KR910011923A (ko) | 1991-08-07 |
| CA2031699C (en) | 1996-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19910430 |
|
| FC3A | Refusal |
Effective date: 19970226 |