ClassID:

97587

C08F2/34 - CPC Classification

Classification description:

Processes of polymerisation Polymerisation in gaseous state

Recent Application in this class:
#1
20260103548
2026-04-16

PROCESS FOR PRODUCING POLYPROPYLENE-ETHYLENE RANDOM COPOLYMER RESIN WITH SUSTAINABLE REACTOR OPERABILITY

#2
20260098105
2026-04-09

PREPOLYMERIZED CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF PRODUCING THIS PREPOLYMERIZED CATALYST AND METHOD OF PRODUCING OLEFIN POLYMER WITH IMPROVED PROCESSABILITY AND OPTICAL PROPERTIES

#3
20260078247
2026-03-19

POLYOLEFINS COMPOSITIONS OBTAINED FROM RECYCLED POLYOLEFINS

#4
20250382399
2025-12-18

ETHYLENE POLYMERISATION PROCESS

#5
20250381318
2025-12-18

INTRAOCULAR LENS COMPOSITIONS

#6
20250377336
2025-12-11

COATING INNER SURFACES OF ENCLOSED ARTICLES

#7
20250376547
2025-12-11

CONTINUOUS OLEFIN POLYMERIZATION PROCESS IN THE PRESENCE OF AN ANTISTATIC AGENT

#8
20250346695
2025-11-13

ETHYLENE BASED CO/TERPOLYMERS CONTAINING A HIGH PURITY -S-S- BASED DYNAMIC CROSSLINKER TO PRODUCE AN IN-REACTOR DYNAMIC MATERIAL

#9
20250303386
2025-10-02

SPLIT LOOP PROPYLENE POLYMERIZATION PLANT AND SPLIT LOOP PROPYLENE POLYMERIZATION PROCESS

#10
20250282919
2025-09-11

PROCESS FOR PRODUCING A MULTIMODAL POLYOLEFIN COMPOSITION IN AN EXTRUDER DEVICE

#11
20250235842
2025-07-24

GAS-PHASE PROCESS FOR MAKING POLYPROPYLENE RANDOM COPOLYMERS

#12
20250205686
2025-06-26

SILICA-SUPPORTED POLYOLEFIN CATALYST SYSTEM

#13
20250115692
2025-04-10

OLEFIN-BASED POLYMER

#14
20250092173
2025-03-20

Polyolefin polymer and polyolefin polymerization system and method

#15
20250034291
2025-01-30

IMIDAZOLIUM-BASED ZWITTERIONIC POLYMER

#16
20250026873
2025-01-23

PROPYLENE POLYMERS FOR THREE-DIMENSIONAL PRINTING

#17
20250019474
2025-01-16

POLYOLEFIN HAVING EXCELLENT PROCESSABILITY AND PROCESS FOR PREPARING SAME

#18
20250019468
2025-01-16

UPGRADED DRAFT TUBE FOR OLEFIN FLUIDIZED BED POLYMERIZATION

#19
20250011478
2025-01-09

SUPPORTED CATALYST SYSTEMS CONTAINING A CARBON BRIDGED, ANTHRACENYL SUBSTITUTED BIS-BIPHENYL-PHENOXY ORGANOMETALLIC COMPOUND FOR MAKING POLYETHYLENE AND POLYETHYLENE COPOLYMER RESINS IN A GAS PHASE POLYMERIZATION REACTOR

#20
20240425627
2024-12-26

HDPE INTERMEDIATE BULK CONTAINER RESIN USING ADVANCED CHROME CATALYST BY POLYETHYLENE GAS PHASE TECHNOLOGY

#21
20240417492
2024-12-19

METHODS OF MAKING BIMODAL POLYETHYLENES

#22
20240400733
2024-12-05

ETHYLENE/1-HEXENE COPOLYMERS

#23
20240392043
2024-11-28

PROCESS FOR PRODUCING A PROPYLENE COPOLYMER

#24
20240376236
2024-11-14

BIMODAL POLY(ETHYLENE-CO-1-ALKENE) COPOLYMER AND BLOW-MOLDED INTERMEDIATE BULK CONTAINERS MADE THEREFROM

#25
20240343840
2024-10-17

PROCESS FOR PRODUCING POLYOLEFIN GRANULAR RESIN WITH INCREASED SETTLED BULK DENSITY

#26
20240343839
2024-10-17

GAS PHASE POLYMERIZATION PROCESS WITH IMPROVED GAS RECYCLING

#27
20240317901
2024-09-26

UTILIZATION OF 1-HEXENE IN MULTI-STAGE POLYOLEFIN PRODUCTION

#28
20240294682
2024-09-05

PROCESS FOR PRODUCING POLYETHYLENE POLYMERS

#29
20240294681
2024-09-05

IMPROVING CATALYST PERFORMANCE IN MULTI-STAGE POLYOLEFIN PRODUCTION

#30
20240279450
2024-08-22

FILLED POLYOLEFIN COMPOSITION

#31
20240271876
2024-08-15

HEAT EXCHANGER FOR GAS PHASE POLYMERIZATION

#32
20240254264
2024-08-01

PROCESS FOR PREPARING AN OLEFIN POLYMER COMPRISING WITHDRAWING A GASEOUS SAMPLE FOR ANALYZING

#33
20240228677
2024-07-11

METHOD OF MAKING AN ETHYLENE-PROPYLENE COPOLYMER

#34
20240209193
2024-06-27

Bimodal polyethylene-based composition

#35
20240209125
2024-06-27

PREPOLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS

#36
20240209124
2024-06-27

PROCESSES FOR TRANSITIONING BETWEEN DIFFERENT POLYMERIZATION CATALYSTS IN A POLYMERIZATION REACTOR

#37
20240209123
2024-06-27

FLUIDIC SEAL APPARATUS FOR CONTINUOUS POLYMERIZATION PROCESS

#38
20240150500
2024-05-09

SUBSTRATE PROCESSING APPARATUS

#39
20240132639
2024-04-25

OLEFIN-BASED POLYMER, FILM PREPARED THEREFROM, AND PREPARATION METHODS THEREFOR

#40
20240132635
2024-04-25

Method of making an ethylene-propylene copolymer

#41
20240101725
2024-03-28

Method of changing melt rheology property of bimodal polyethylene polymer

#42
20240084116
2024-03-14

THERMOPLASTIC COMPOSITIONS COMPRISING BIMODAL POLYETHYLENE AND ARTICLES MANUFACTURED THEREFROM

#43
20240084051
2024-03-14

Process for preparing catalysts and catalyst compositions

#44
20240076427
2024-03-07

PRODUCING POLYOLEFIN PRODUCTS

#45
20240076424
2024-03-07

Dual Catalyst System for Producing High Density Polyethylenes With Long Chain Branching

#46
20240066514
2024-02-29

PROCESSES FOR MAKING AND USING SLURRY CATALYST MIXTURES

#47
20240059816
2024-02-22

OLEFIN-BASED POLYMER AND METHOD FOR PREPARING THE SAME

#48
20240059801
2024-02-22

PROCESSES FOR POLYMERIZING ONE OR MORE OLEFINS

#49
20240009646
2024-01-11

POLYOLEFIN PRODUCTION APPARATUS AND POLYOLEFIN PRODUCTION METHOD

#50
20230406972
2023-12-21

OLEFIN-BASED POLYMER AND METHOD FOR PREPARING SAME

#51
20230406868
2023-12-21

Non-Hydrolytic Preparation of SMAO and Catalysts

#52
20230357550
2023-11-09

POLYOLEFIN COMPOSITIONS AND PRODUCTS

#53
20230340246
2023-10-26

Proplylene-based copolymer product

#54
20230331881
2023-10-19

PRODUCTION OF POLYPROPYLENE WITH LOW VOLATILES

#55
20230322972
2023-10-12

Supported Catalyst Systems and Processes for Use Thereof

#56
20230322968
2023-10-12

CATALYST SYSTEMS AND PROCESSES FOR PRODUCING POLYETHYLENE USING THE SAME

#57
20230287159
2023-09-14

SPRAY-DRIED CATALYSTS CONTAINING A GERMANIUM-BRIDGED BIS-BIPHENYL-PHENOXY ORGANOMETALLIC COMPOUND FOR MAKING ETHYLENE-BASED COPOLYMERS

#58
20230272197
2023-08-31

Bimodal polyethylene copolymers

#59
20230265273
2023-08-24

POLYOLEFIN COMPOSITION FOR ROOFING APPLICATIONS

#60
20230257498
2023-08-17

BIMODAL POLYETHYLENE COPOLYMER AND FILM THEREOF

#61
20230250204
2023-08-10

PRODUCING POLYOLEFIN PRODUCTS

#62
20230242683
2023-08-03

Process for preparing catalysts and catalyst compositions

#63
20230242682
2023-08-03

PARTIAL OXIDATIVE COUPLING CATALYST AND OLEFIN PRODUCTION DEVICE AND OLEFIN PRODUCTION METHOD USING CATALYST

#64
20230235099
2023-07-27

CATALYST SYSTEMS AND PROCESSES FOR PRODUCING POLYETHYLENE USING THE SAME

#65
20230227637
2023-07-20

MULTIMODAL ETHYLENE COPOLYMER

#66
20230203218
2023-06-29

CHEMICALLY CONVERTED CATALYSTS

#67
20230192920
2023-06-22

SINGLE REACTOR BIMODAL POLYETHYLENE WITH IMPROVED MODULUS FOR EXTRUSION BLOW MOLDING DRUM APPLICATIONS

#68
20230183397
2023-06-15

Process

#69
20230183390
2023-06-15

Production of polyethylene and ethylene oligomers from ethanol and the use of biomass and waste streams as feedstocks to produce the ethanol

#70
20230174757
2023-06-08

Linear Low Density Polyethylene for Film Applications

#71
20230174694
2023-06-08

METHOD TO PREPARE ETHYLENE COPOLYMERS

#72
20230140414
2023-05-04

HIGH DENSITY POLYETHYLENE FOR RIGID ARTICLES

#73
20230135304
2023-05-04

RECYCLE CONTENT POLYETHYLENE

#74
20230134198
2023-05-04

RECYCLE CONTENT POLYPROPYLENE

#75
20230103411
2023-04-06

Highly Efficient C6 Inert Vent for Gas Phase Polyethylene Production

#76
20230098987
2023-03-30

GAS-PHASE BIPHENYLPHENOL POLYMERIZATION CATALYSTS

#77
20230071755
2023-03-09

HETEROPHASIC PROPYLENE POLYMERIC MATERIAL

#78
20230064044
2023-03-02

METHOD AND SYSTEM FOR PRODUCING A POLYMER

#79
20230063000
2023-03-02

Process for producing alpha-olefin polymers in a multistage polymerization process

#80
20230038231
2023-02-09

HEATED GAS STREAM FOR REDUCING OLIGOMER AND WAX BUILD UP IN RECYCLE COOLERS

#81
20220411549
2022-12-29

Isobutane-Containing Induced Condensing Agents in Fluidized Bed Polymerization Reactions

#82
20220403061
2022-12-22

BIPHENYLPHENOL POLYMERIZATION CATALYSTS

#83
20220306771
2022-09-29

PROCESS FOR PREPARING POLYPROPYLENE COMPOSITION

#84
20220298343
2022-09-22

HETEROPHASIC PROPYLENE COPOLYMERS

#85
20220242976
2022-08-04

Process for preparing catalysts and catalyst compositions

#86
20220235155
2022-07-28

HAFNOCENE-TITANOCENE CATALYST SYSTEM

#87
20220195083
2022-06-23

Olefin polymerization method using antistatic agent for metallocene olefin polymerization process

#88
20220177609
2022-06-09

OLEFIN POLYMERIZATION METHOD AND SYSTEM

#89
20220169755
2022-06-02

Apparatus and method for manufacturing high-pressure method low-density polyethylene

#90
20220153882
2022-05-19

Polymerization process

#91
20220144975
2022-05-12

CATALYST SYSTEM FOR PRODUCING OLEFIN POLYMERS WITH NO FINES

#92
20220143267
2022-05-12

INTRAOCULAR LENS COMPOSITIONS

#93
20220119564
2022-04-21

PROCESS TO PRODUCE A POLYMER AND POLYMER

#94
20220119563
2022-04-21

Methods for improving production in gas phase polymerization

#95
20220098332
2022-03-31

Methods for improving gas phase polymerization

#96
20220033537
2022-02-03

On-line adjustment of catalysts by trim and olefin polymerization

#97
20220033536
2022-02-03

On-line adjustment of mixed catalyst ratio by trim and olefin polymerization with the same

#98
20220033535
2022-02-03

On-Line Adjustment of Mixed Catalyst Ratio and Olefin Polymerization

#99
20220002455
2022-01-06

Producing polyolefin products

#100
20210403615
2021-12-30

Method of olefin polymerization using alkane-soluble non-metallocene precatalyst

#101
20210395400
2021-12-23

Mixed Catalyst Systems with Properties Tunable by Condensing Agent

#102
20210332167
2021-10-28

Gas-phase process for preparing ethylene polymers

#103
20210317236
2021-10-14

Multi-stage process for producing a C2 to C8 olefin polymer composition

#104
20210309774
2021-10-07

Polypropylene composition combining low sealing initiation temperature and high melting temperature

#105
20210309767
2021-10-07

HIGH PRESSURE, FREE RADICAL POLYMERIZATIONS TO PRODUCE ETHYLENE-BASED POLYMERS

#106
20210292445
2021-09-23

Olefin polymerization processes

#107
20210284770
2021-09-16

Method of producing polyethylene and polyethylene thereof

#108
20210284762
2021-09-16

Chromium oxide catalyst for ethylene polymerization

#109
20210284760
2021-09-16

Method and system for producing a polymer

#110
20210261703
2021-08-26

Unimodal polyethylene copolymer and film thereof

#111
20210253756
2021-08-19

Production method of propylene polymer

#112
20210252470
2021-08-19

Plasma polymerisation apparatus

#113
20210230318
2021-07-29

Process for preparing catalysts and catalyst compositions

#114
20210214472
2021-07-15

Process for polymerizing olefins in the gas-phase

#115
20210189023
2021-06-24

Polymerization processes

#116
20210179743
2021-06-17

LOW AROMATIC POLYOLEFINS

#117
20210147661
2021-05-20

Bimodal polyethylene copolymers

#118
20210147660
2021-05-20

Process for the preparation of multimodal high density polyethylene

#119
20210147591
2021-05-20

Bimodal polyethylene

#120
20210139619
2021-05-13

Dual catalyst system for producing high density polyethylenes with long chain branching

#121
20210139618
2021-05-13

Olefin polymerization processes

#122
20210130508
2021-05-06

Process for polymerizing olefin in a gas phase reactor with improved thermal homogeneity

#123
20210130507
2021-05-06

Methods for controlling start up conditions in polymerization processes

#124
20210108058
2021-04-15

Polypropylene pipe composition

#125
20210102016
2021-04-08

Polymer flow index modifier

#126
20210102009
2021-04-08

Polymerization process including discharging polyolefin particles from a gas-phase polymerization reactor

#127
20210087306
2021-03-25

Metallocene-supported catalyst and method of preparing polyolefin using the same

#128
20210079129
2021-03-18

HAFNOCENE-TITANOCENE CATALYST SYSTEM

#129
20210079126
2021-03-18

Olefin polymerization processes

#130
20210062050
2021-03-04

Adhesive composition including ethylene/alpha-olefin copolymer

#131
20210047445
2021-02-18

Producing a polyethylene polymer

#132
20210047442
2021-02-18

Controlling a polymerization reaction

#133
20210040249
2021-02-11

Multimodal polyethylene composition

#134
20210024670
2021-01-28

METHOD TO PREPARE ETHYLENE COPOLYMERS

#135
20210017368
2021-01-21

Bimodal polypropylene random copolymer

#136
20210016265
2021-01-21

Mixed Catalyst System

#137
20210002397
2021-01-07

PROCESS FOR PREPARING PROPYLENE COPOLYMERS COMPRISING C4-C12-APHA OLEFIN COMONOMER UNITS

#138
20210002390
2021-01-07

Ziegler-Natta catalyst and preparation thereof

#139
20200406213
2020-12-31

Remote pressure sensing for polymer reactor control

#140
20200398258
2020-12-24

Ziegler-Natta catalysts prepared from solid alkoxymagnesium halide supports

#141
20200392259
2020-12-17

ORTHOMETALLATED CATALYST COMPONENTS FOR OLEFIN POLYMERIZATION AND COPOLYMERIZATION

#142
20200385495
2020-12-10

Method for producing multimodal polyolefin using multistage continuous polymerization process

#143
20200362150
2020-11-19

Proplylene-based copolymer product

#144
20200362064
2020-11-19

Dual catalyst system for producing high density polyethylenes with long chain branching

#145
20200347163
2020-11-05

High pressure polyethylene product cooling

#146
20200347156
2020-11-05

Systems and methods for polyethylene recovery with low volatile content

#147
20200332031
2020-10-22

Metallocenes with two -Si-Si- bridges

#148
20200325319
2020-10-15

Propylene copolymer composition

#149
20200325275
2020-10-15

Ethylene/CO interpolymers and processes to make the same

#150
20200325254
2020-10-15

Amido-benzoquinone catalyst systems and processes thereof

#151
20200317831
2020-10-08

Water purification material for petrochemicals

#152
20200299418
2020-09-24

Methods and systems for olefin polymerization

#153
20200291149
2020-09-17

Process for producing polyethylene polymers

#154
20200270375
2020-08-27

Deactivation methods for active components from gas phase polyolefin polymerization processes

#155
20200270373
2020-08-27

Process for transitioning between incompatible catalysts

#156
20200262951
2020-08-20

Polyethylene copolymer resins and films

#157
20200262950
2020-08-20

Selectively transitioning polymerization processes

#158
20200255563
2020-08-13

Ethylene copolymer having enhanced film properties

#159
20200247919
2020-08-06

Systems and methods for polyethylene recovery with low volatile content

#160
20200223950
2020-07-16

Production of heterophasic polymers in gas or slurry phase

#161
20200216587
2020-07-09

Propylene ethylene random copolymer

#162
20200181297
2020-06-11

Method for producing heterophasic propylene polymer material

#163
20200148800
2020-05-14

Process for producing ethylene copolymers

#164
20200131284
2020-04-30

Process for preparing heterophasic propylene copolymers

#165
20200123279
2020-04-23

Method, an arrangement and use of an arrangement of preparing polymer

#166
20200087431
2020-03-19

Process for manufacture of low emission homopolymer or random polypropylene

#167
20200087423
2020-03-19

Process for the polymerization of a polyolefin

#168
20200087422
2020-03-19

Polymerization process

#169
20200087421
2020-03-19

Process for the polymerization of olefins

#170
20200079886
2020-03-12

Producing a polyethylene polymer

#171
20200079882
2020-03-12

Rating polymerization processes

#172
20200071437
2020-03-05

Polymerization processes and polymers made therefrom

#173
20200071436
2020-03-05

Polymerization processes and polymers made therefrom

#174
20200071435
2020-03-05

Process for producing propylene copolymers with low VOC content

#175
20200071429
2020-03-05

PROCESS FOR ACTIVATING A CATALYST FOR THE POLYMERIZATION OF ETHYLENE

#176
20200071427
2020-03-05

Process and system for vapor phase polymerization of olefin monomers

#177
20200048379
2020-02-13

Polyethylene copolymers having a particular comonomer distribution

#178
20200031964
2020-01-30

Polymerization process

#179
20200031957
2020-01-30

Process for gas-phase polymerization of olefins

#180
20200010655
2020-01-09

Process for producing polyolefin film composition and films prepared thereof

#181
20190389988
2019-12-26

Methods to produce heterogeneous polyethylene granules

#182
20190382512
2019-12-19

Elimination of polymer fouling in fluidized bed gas-phase fines recovery eductors

#183
20190367650
2019-12-05

Producing polyolefin products

#184
20190367643
2019-12-05

Method for producing polyethylene resin

#185
20190367642
2019-12-05

Process for preparing polypropylene composition

#186
20190352438
2019-11-21

Process for operating a polymer powder degasser vessel

#187
20190330386
2019-10-31

Process for manufacture of low emission heterophasic polypropylene

#188
20190330385
2019-10-31

Process and system for vapor phase polymerization of olefin monomers

#189
20190322780
2019-10-24

METHOD TO PREPARE ETHYLENE COPOLYMERS

#190
20190309150
2019-10-10

Polypropylene composition combining low sealing initiation temperature and high melting temperature

#191
20190309099
2019-10-10

Universal alpha-olefin polymerization catalyst, and application thereof

#192
20190309098
2019-10-10

Method for startup of a gas phase polymerization reactor

#193
20190300630
2019-10-03

Process for producing polyolefin film composition and films prepared thereof

#194
20190292279
2019-09-26

High pressure, free radical polymerizations to produce ethylene-based polymers

#195
20190284378
2019-09-19

Polyethylene composition for blow molding having high swell ratio and impact resistance

#196
20190284310
2019-09-19

Catalyst Supply System and Process for Producing Polymers

#197
20190263942
2019-08-29

Hybrid supported metallocene catalyst, and polyolefin resin having excellent processability and using same

#198
20190225715
2019-07-25

Process to prepare a solid support for a procatalyst suitable for polymerization of olefins

#199
20190218319
2019-07-18

Polymerization process

#200
20190218318
2019-07-18

Polymerization process

#201
20190218314
2019-07-18

Catalyst pre-contact device for continuous polymerization of olefins and method for catalyst pre-contact

#202
20190211116
2019-07-11

Self-regulating external electron donor-containing catalyst used for alpha-olefin polymerization, and application of catalyst

#203
20190177452
2019-06-13

Method of producing polyethylene and polyethylene thereof

#204
20190177447
2019-06-13

High-pressure polymerization process of ethylenically unsaturated monomers in a production line having flanges covered by a chimney construction

#205
20190169335
2019-06-06

Pilot plant scale semi-condensing operation

#206
20190169333
2019-06-06

Producing polyolefin products

#207
20190169325
2019-06-06

High-density ethylene-based polymer using supported hybrid metallocene catalyst, and manufacturing method therefor

#208
20190169318
2019-06-06

High-pressure polymerization process of ethylenically unsaturated monomers carred out in a polymerization reactor installed within a protective enclosure

#209
20190161561
2019-05-30

Catalysts that produce polyethylene with broad, bimodal molecular weight distribution

#210
20190161560
2019-05-30

Asymmetric -metallocene catalyst compounds for producing polyolefins having a broad molecular weight distribution

#211
20190153126
2019-05-23

Process for making a solid catalyst component for ethylene polymerization and co-polymerization

#212
20190144571
2019-05-16

(Di)silicon bridged metallocenes that produce polyethylene with broad molecular weight distribution and high molecular weight

#213
20190136050
2019-05-09

Compositions comprising ethylene-carbon monoxide copolymers

#214
20190135950
2019-05-09

High-pressure polymerization process of ethylenically unsaturated monomers

#215
20190127503
2019-05-02

High-density ethylene-based polymer using hybrid supported metallocene catalyst, and preparation method

#216
20190119419
2019-04-25

Process for producing LLDPE resins

#217
20190119417
2019-04-25

Polyethylene compositions and articles made therefrom

#218
20190119416
2019-04-25

Polymer flow index modifier

#219
20190119413
2019-04-25

Catalyst systems and polymerization processes for using the same

#220
20190062466
2019-02-28

Method for producing polyolefin and polyolefin production system

#221
20190062465
2019-02-28

Method for producing polyolefin and polyolefin production system

#222
20190062463
2019-02-28

Method for producing polyolefin

#223
20190023894
2019-01-24

Method of preparing ABS-based graft copolymer having improved impact strength and method of manufacturing ABS-based injection-molded article including the same

#224
20190016831
2019-01-17

Gas phase polymerisation of ethylene

#225
20190010260
2019-01-10

High pressure polyethylene product cooling

#226
20180369775
2018-12-27

Method for returning polymer to a fluidised bed reactor

#227
20180362743
2018-12-20

Polyethylene composition having high mechanical properties and processability

#228
20180362672
2018-12-20

Olefin polymerization process

#229
20180346623
2018-12-06

Ethylene copolymer having enhanced film properties

#230
20180346613
2018-12-06

Process to control output and quality of ethylene-based polymer formed by high pressure free radical polymerization

#231
20180340033
2018-11-29

POLYMERIC ADDITIVES FOR MORPHOLOGICALLY STABLE ORGANIC LIGHT EMITTING DIODE AND METHODS OF MANUFACTURE THEREOF

#232
20180319906
2018-11-08

Device for producing poly(meth)acrylate in powder form

#233
20180305473
2018-10-25

Methods of preparing a catalyst

#234
20180282442
2018-10-04

Metallocene supported catalyst and method for preparing polyolefin using the same

#235
20180265605
2018-09-20

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