Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

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Patents Grantslast 30 patents

Information Patent Grant
Methods for making supported chromium catalysts with increased poly...
- Patent number 12,157,109
- Issue date Dec 3, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing catalysts and catalyst compositions
- Patent number 12,152,101
- Issue date Nov 26, 2024
- Formosa Plastics Corporation, U.S.A.
- Michael D. Jensen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Methods for improving production in gas phase polymerization
- Patent number 12,152,095
- Issue date Nov 26, 2024
- ExxonMobil Chemical Patents Inc.
- Bruce J. Savatsky
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Oxygenate separation using a metal salt
- Patent number 12,146,109
- Issue date Nov 19, 2024
- Nova Chemicals (International) S.A.
- Bolaji Olayiwola
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for the preparation of perhaloacyl peroxides
- Patent number 12,139,453
- Issue date Nov 12, 2024
- Solvay Specialty Polymers Italy S.p.A.
- Stefana Musio
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing polyethylene
- Patent number 12,139,564
- Issue date Nov 12, 2024
- Sumitomo Chemical Company, Limited
- Kensuke Naraki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Transition metal compound and catalyst composition comprising the same
- Patent number 12,134,674
- Issue date Nov 5, 2024
- LG Chem, Ltd.
- Byung Seok Kim
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Crosslinked polyethylene pipe having excellent physical properties
- Patent number 12,122,903
- Issue date Oct 22, 2024
- LG Chem, Ltd.
- Hyunsup Lee
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Electromagnetic wave shielding molded article
- Patent number 12,122,900
- Issue date Oct 22, 2024
- Daicel Polymer Ltd.
- Takafumi Ueda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Catalyst component for olefin polymerization, preparation method th...
- Patent number 12,121,880
- Issue date Oct 22, 2024
- China Petroleum and Chemical Corporation
- Rui Zhang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Nanostructures from laser-ablated nanohole templates
- Patent number 12,109,737
- Issue date Oct 8, 2024
- Ultra Small Fibers, LLC
- William Hudson Hofmeister
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Gas-phase process for preparing ethylene polymers
- Patent number 12,103,988
- Issue date Oct 1, 2024
- Basell Polyolefine GmbH
- Giuseppe Penzo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Device and method for the provision of pressurized medium for injec...
- Patent number 12,098,717
- Issue date Sep 24, 2024
- Uhde High Pressure Technologies GmbH
- Holger Werth
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Chromium oxide catalyst for ethylene polymerization
- Patent number 12,091,472
- Issue date Sep 17, 2024
- SABIC GLOBAL TECHNOLOGIES B.V.
- Xiaoyu Tan
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Methods of controlling shutdown of reactor systems
- Patent number 12,065,518
- Issue date Aug 20, 2024
- ExxonMobil Chemical Patents Inc.
- Paul J. Clymans
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Thermoplastic polymer composition and method for making films from...
- Patent number 12,065,550
- Issue date Aug 20, 2024
- Milliken & Company
- Darin Dotson
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Polyethylene having high pressure resistance and crosslinked polyet...
- Patent number 12,065,514
- Issue date Aug 20, 2024
- LG Chem, Ltd.
- Sol Cho
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Polypropylene-based composite material and method for preparing the...
- Patent number 12,065,515
- Issue date Aug 20, 2024
- LG Chem, Ltd.
- Sang Eun Park
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Solid catalyst component for olefin polymerization, method for prod...
- Patent number 12,060,378
- Issue date Aug 13, 2024
- Toho Titanium Co., Ltd.
- Tsutomu Uzawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process
- Patent number 12,060,443
- Issue date Aug 13, 2024
- INEOS USA LLC
- William E. Beardsley
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Modified supported chromium catalysts and ethylene-based polymers p...
- Patent number 12,059,672
- Issue date Aug 13, 2024
- Chevron Phillips Chemical Company LP
- Masud M. Monwar
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Low-gloss thermoplastic composition
- Patent number 12,054,603
- Issue date Aug 6, 2024
- Innovative Polymers, LLC
- Kris W. Winowiecki
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Methods for making supported chromium catalysts with increased poly...
- Patent number 12,053,761
- Issue date Aug 6, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Polypropylene multilayer sheet
- Patent number 12,053,959
- Issue date Aug 6, 2024
- FP CORPORATION AND SUNALLOMER LTD.
- Shingo Ueno
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Polyolefin-polydiorganosiloxane block copolymer and method for the...
- Patent number 12,037,462
- Issue date Jul 16, 2024
- Dow Global Technologies LLC
- Steven Swier
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for preparing metallocene-based catalyst systems with an...
- Patent number 12,037,421
- Issue date Jul 16, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Biaxially-oriented polyethylene films for thermoforming, process fo...
- Patent number 12,030,964
- Issue date Jul 9, 2024
- Brückner Maschinenbau GmbH
- Michael Pecher
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyethylene and its chlorinated polyethylene
- Patent number 12,006,378
- Issue date Jun 11, 2024
- LG Chem, Ltd.
- Cheolhwan Jeong
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hybrid supported catalyst and method of preparing polyolefin using...
- Patent number 11,993,665
- Issue date May 28, 2024
- LG Chem, Ltd.
- Sun Mi Kim
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Production of high melt flow propylene-based polymer and product fr...
- Patent number 11,993,672
- Issue date May 28, 2024
- W. R. Grace & Co.-Conn.
- Linfeng Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
SINTERED POROUS POLYPROPYLENE MEDIA AND APPLICATIONS
- Publication number 20240417497
- Publication date Dec 19, 2024
- POREX CORPORATION
- Shawn Patrick Knotts
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Methods for Making Supported Chromium Catalysts with Increased Poly...
- Publication number 20240399342
- Publication date Dec 5, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MAKING FILMS FROM...
- Publication number 20240400774
- Publication date Dec 5, 2024
- Milliken & Company
- Darin Dotson
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
CATALYST COMPONENT FOR PROPYLENE POLYMERIZATION WITH IMPROVED CATAL...
- Publication number 20240392047
- Publication date Nov 28, 2024
- W.R. GRACE & CO.-CONN.
- Vladimir P. MARIN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYETHYLENE AND VULCANIZABLE CHLORINATED POLYETHYLENE COMPOSITIONS...
- Publication number 20240384016
- Publication date Nov 21, 2024
- LG CHEM, LTD.
- Hyo Min KIM
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Catalyst Feeder and Processes Thereof
- Publication number 20240382918
- Publication date Nov 21, 2024
- EXXONMOBIL CHEMICAL PATENTS INC.
- Timothy J. POIRRIER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYMERISATION OF PROPYLENE
- Publication number 20240368317
- Publication date Nov 7, 2024
- Oxford University Innovation Limited
- Dermot O'HARE
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
VARIABLE TEMPERATURE TUBULAR REACTOR PROFILES AND INTERMEDIATE DENS...
- Publication number 20240360255
- Publication date Oct 31, 2024
- ExxonMobil Technology and Engineering Company
- Henri A. LAMMENS
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING ALPHA-OLEFIN
- Publication number 20240360254
- Publication date Oct 31, 2024
- Idemitsu Kosan Co.,Ltd
- Ryoichi KOBAYASHI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PREPARING POLYALPHA-OLEFINS
- Publication number 20240352159
- Publication date Oct 24, 2024
- SABIC Global Technologies B.V.
- Nicolaas Hendrika Friederichs
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PRODUCING POLYOLEFIN GRANULAR RESIN WITH INCREASED SETT...
- Publication number 20240343840
- Publication date Oct 17, 2024
- W.R. GRACE & CO.-CONN.
- Ping CAI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
DISENTANGLED ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE, METHODS OF M...
- Publication number 20240301101
- Publication date Sep 12, 2024
- King Abdullah University of Science and Technology
- Sanjay RASTOGI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
ELECTRET MELT-BLOWN WEBS WITH IMPROVED FILTRATION PROPERTIES
- Publication number 20240301602
- Publication date Sep 12, 2024
- Borealis AG
- Jingbo Wang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Polyethylene and Its Chlorinated Polyethylene
- Publication number 20240294680
- Publication date Sep 5, 2024
- LG CHEM, LTD.
- Cheolhwan Jeong
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYPROPYLENE PRODUCTION USING A PROPYLENE STREAM COMPRISING PROPANE
- Publication number 20240287220
- Publication date Aug 29, 2024
- LUMMUS NOVOLEN TECHNOLOGY GMBH
- Stefan Bangerth
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
COVALENT ORGANIC FRAMEWORK AND CATALYST, PREPARATION METHODS THEREF...
- Publication number 20240270883
- Publication date Aug 15, 2024
- ZHEJIANG UNIVERSITY
- Pingwei LIU
- C07 - ORGANIC CHEMISTRY
Information Patent Application
A PROCESS FOR PREPARATION OF DISENTANGLED ULTRA-HIGH MOLECULAR WEIG...
- Publication number 20240270882
- Publication date Aug 15, 2024
- Reliance Industries Limited
- Virendrakumar Gupta
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYPROPYLENE-BASED COMPOSITIONS WITH IMPROVED IMPACT RESISTANCE AN...
- Publication number 20240262944
- Publication date Aug 8, 2024
- BRASKEM S.A
- Moisés Magalhães Werlang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polyethylene Manufacturing Process
- Publication number 20240254263
- Publication date Aug 1, 2024
- SK INNOVATION CO., LTD.
- Maeng Sun Eo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Bubble Column Reactor
- Publication number 20240246053
- Publication date Jul 25, 2024
- LG CHEM, LTD.
- Moon Sub Hwang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS FOR THE...
- Publication number 20240247085
- Publication date Jul 25, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
CATALYST SUPPORTS AND USES THEREOF
- Publication number 20240239928
- Publication date Jul 18, 2024
- Oxford University Innovation Limited
- Dermot O'HARE
- C01 - INORGANIC CHEMISTRY
Information Patent Application
HIGH MELT STRENGTH POLYPROPYLENE COMPOSITION
- Publication number 20240228722
- Publication date Jul 11, 2024
- SABIC Global Technologies B.V.
- Peter Degenhart
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, CATALYST FOR...
- Publication number 20240218087
- Publication date Jul 4, 2024
- TOHO TITANIUM CO., LTD.
- Hideo Funabashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
OLIGOMERIZATION OF ALPHA OLEFINS USING SUPPORTED METALLOCENE CATALY...
- Publication number 20240218089
- Publication date Jul 4, 2024
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PREPOLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
- Publication number 20240209125
- Publication date Jun 27, 2024
- BASELL POLIOLEFINE ITALIA S.r.l.
- Benedetta Gaddi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
HYBRID SUPPORTED METALLOCENE CATALYST AND METHOD FOR PREPARING POLY...
- Publication number 20240209126
- Publication date Jun 27, 2024
- LG CHEM, LTD.
- Byung Seok KIM
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymer Composition and Membranes Made Therefrom With Improved Mech...
- Publication number 20240199850
- Publication date Jun 20, 2024
- CELANESE INTERNATIONAL CORPORATION
- Christian Ohm
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
SURFACE GRADIENT CROSS-LINKING METHOD OF ULTRA-HIGH MOLECULAR WEIGH...
- Publication number 20240191007
- Publication date Jun 13, 2024
- b-ONE Medical (Suzhou) Co., Ltd.
- Zongtao ZHANG
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
BRANCHED PROPYLENE-BASED POLYMER AND PRODUCTION METHOD THEREFOR
- Publication number 20240182609
- Publication date Jun 6, 2024
- JAPAN POLYPROPYLENE CORPORATION
- Masaaki ITO
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Industry

Parent Industries

Current Industry

Sub Industries

Patents Grantslast 30 patents

Methods for making supported chromium catalysts with increased poly...

Process for preparing catalysts and catalyst compositions

Methods for improving production in gas phase polymerization

Oxygenate separation using a metal salt

Process for the preparation of perhaloacyl peroxides

Process for producing polyethylene

Transition metal compound and catalyst composition comprising the same

Crosslinked polyethylene pipe having excellent physical properties

Electromagnetic wave shielding molded article

Catalyst component for olefin polymerization, preparation method th...

Nanostructures from laser-ablated nanohole templates

Gas-phase process for preparing ethylene polymers

Device and method for the provision of pressurized medium for injec...

Chromium oxide catalyst for ethylene polymerization

Methods of controlling shutdown of reactor systems

Thermoplastic polymer composition and method for making films from...

Polyethylene having high pressure resistance and crosslinked polyet...

Polypropylene-based composite material and method for preparing the...

Solid catalyst component for olefin polymerization, method for prod...

Process

Modified supported chromium catalysts and ethylene-based polymers p...

Low-gloss thermoplastic composition

Methods for making supported chromium catalysts with increased poly...

Polypropylene multilayer sheet

Polyolefin-polydiorganosiloxane block copolymer and method for the...

Processes for preparing metallocene-based catalyst systems with an...

Biaxially-oriented polyethylene films for thermoforming, process fo...

Polyethylene and its chlorinated polyethylene

Hybrid supported catalyst and method of preparing polyolefin using...

Production of high melt flow propylene-based polymer and product fr...

Patents Applicationslast 30 patents

SINTERED POROUS POLYPROPYLENE MEDIA AND APPLICATIONS

Methods for Making Supported Chromium Catalysts with Increased Poly...

THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MAKING FILMS FROM...

CATALYST COMPONENT FOR PROPYLENE POLYMERIZATION WITH IMPROVED CATAL...

POLYETHYLENE AND VULCANIZABLE CHLORINATED POLYETHYLENE COMPOSITIONS...

Catalyst Feeder and Processes Thereof

POLYMERISATION OF PROPYLENE

VARIABLE TEMPERATURE TUBULAR REACTOR PROFILES AND INTERMEDIATE DENS...

METHOD FOR PRODUCING ALPHA-OLEFIN

PROCESS FOR PREPARING POLYALPHA-OLEFINS

PROCESS FOR PRODUCING POLYOLEFIN GRANULAR RESIN WITH INCREASED SETT...

DISENTANGLED ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE, METHODS OF M...

ELECTRET MELT-BLOWN WEBS WITH IMPROVED FILTRATION PROPERTIES

Polyethylene and Its Chlorinated Polyethylene

POLYPROPYLENE PRODUCTION USING A PROPYLENE STREAM COMPRISING PROPANE

COVALENT ORGANIC FRAMEWORK AND CATALYST, PREPARATION METHODS THEREF...

A PROCESS FOR PREPARATION OF DISENTANGLED ULTRA-HIGH MOLECULAR WEIG...

POLYPROPYLENE-BASED COMPOSITIONS WITH IMPROVED IMPACT RESISTANCE AN...

Polyethylene Manufacturing Process

Bubble Column Reactor

PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS FOR THE...

CATALYST SUPPORTS AND USES THEREOF

HIGH MELT STRENGTH POLYPROPYLENE COMPOSITION

SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, CATALYST FOR...

OLIGOMERIZATION OF ALPHA OLEFINS USING SUPPORTED METALLOCENE CATALY...

PREPOLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS

HYBRID SUPPORTED METALLOCENE CATALYST AND METHOD FOR PREPARING POLY...

Polymer Composition and Membranes Made Therefrom With Improved Mech...

SURFACE GRADIENT CROSS-LINKING METHOD OF ULTRA-HIGH MOLECULAR WEIGH...

BRANCHED PROPYLENE-BASED POLYMER AND PRODUCTION METHOD THEREFOR