Qing Yang

Person

Bartlesville, OK, US

People

Patents Grantslast 30 patents

Information Patent Grant
High porosity fluorided silica-coated alumina activator-supports an...
- Patent number 12,146,018
- Issue date Nov 19, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Controlling long-chain branch content with dual activator-supports
- Patent number 12,122,857
- Issue date Oct 22, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C07 - ORGANIC CHEMISTRY
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
Modifications of sulfated bentonites and uses thereof in metallocen...
- Patent number 11,999,814
- Issue date Jun 4, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for producing fluorided solid oxides and uses thereof in...
- Patent number 11,998,902
- Issue date Jun 4, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst composition and method for preparing polyethylene
- Patent number 11,993,667
- Issue date May 28, 2024
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Bimodal polyethylene copolymers
- Patent number 11,945,938
- Issue date Apr 2, 2024
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for preparing metallocene-based catalyst systems for the...
- Patent number 11,945,897
- Issue date Apr 2, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
High porosity fluorided silica-coated alumina activator-supports an...
- Patent number 11,912,809
- Issue date Feb 27, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dual catalyst system for producing polyethylene with long chain bra...
- Patent number 11,859,024
- Issue date Jan 2, 2024
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Modulating co-monomer selectivity using non-covalent dispersion int...
- Patent number 11,859,041
- Issue date Jan 2, 2024
- Chevron Phillips Chemical Company LP
- Steven M. Bischof
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dual catalyst system for producing high density polyethylenes with...
- Patent number 11,851,505
- Issue date Dec 26, 2023
- Chevron Phillips Chemical Company LP
- Errun Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for preparing metallocene-based catalyst systems for the...
- Patent number 11,845,826
- Issue date Dec 19, 2023
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyolefin process monitoring and control
- Patent number 11,773,198
- Issue date Oct 3, 2023
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for preparing metallocene-based catalyst systems with an...
- Patent number 11,753,488
- Issue date Sep 12, 2023
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Methods for determining transition metal compound concentrations in...
- Patent number 11,735,293
- Issue date Aug 22, 2023
- Chevron Phillips Chemical Company LP
- Richard M. Buck
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Processes for producing fluorided solid oxides and uses thereof in...
- Patent number 11,731,122
- Issue date Aug 22, 2023
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Bimodal polyethylene copolymers
- Patent number 11,667,777
- Issue date Jun 6, 2023
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dual component LLDPE copolymers with improved impact and tear resis...
- Patent number 11,634,567
- Issue date Apr 25, 2023
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Polyolefin process monitoring and control
- Patent number 11,453,733
- Issue date Sep 27, 2022
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dual component LLDPE copolymers with improved impact and tear resis...
- Patent number 11,427,703
- Issue date Aug 30, 2022
- Chevran Phillips Chemical Company LP
- Jeremy M. Praetorius
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for producing fluorided solid oxides and uses thereof in...
- Patent number 11,420,196
- Issue date Aug 23, 2022
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Dual component LLDPE copolymers with improved impact and tear resis...
- Patent number 11,352,471
- Issue date Jun 7, 2022
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dual component LLDPE copolymers with improved impact and tear resis...
- Patent number 11,332,601
- Issue date May 17, 2022
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Metallocene catalysts for polyethylene
- Patent number 11,325,995
- Issue date May 10, 2022
- Chevron Phillips Chemical Company LP
- Errun Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Methods for determining the activity of an activated chemically-tre...
- Patent number 11,300,501
- Issue date Apr 12, 2022
- Chevron Phillips Chemical Company LP
- Qing Yang
- G01 - MEASURING TESTING
Information Patent Grant
Methods for terminating olefin polymerizations
- Patent number 11,299,562
- Issue date Apr 12, 2022
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dual catalyst system for producing polyethylene with long chain bra...
- Patent number 11,267,919
- Issue date Mar 8, 2022
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Silica-coated alumina activator-supports for metallocene catalyst c...
- Patent number 11,208,514
- Issue date Dec 28, 2021
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Catalyst composition and method for preparing polyethylene
- Patent number 11,186,665
- Issue date Nov 30, 2021
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...
- Publication number 20250043037
- Publication date Feb 6, 2025
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHODS FOR PREPARING METALLOCENE COMPOUNDS
- Publication number 20250011484
- Publication date Jan 9, 2025
- Chevron Phillips Chemical Company LP
- Graham R. LIEF
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CONTROLLING LONG-CHAIN BRANCH CONTENT WITH DUAL ACTIVATOR-SUPPORTS
- Publication number 20250011481
- Publication date Jan 9, 2025
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
DETERMINING THE LIQUID COMPOSITION IN A LOOP SLURRY POLYMERIZATION...
- Publication number 20240368313
- Publication date Nov 7, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
MODIFICATIONS OF SULFATED BENTONITES AND USES THEREOF IN METALLOCEN...
- Publication number 20240279366
- Publication date Aug 22, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
CATALYST COMPOSITION AND METHOD FOR PREPARING POLYETHYLENE
- Publication number 20240279371
- Publication date Aug 22, 2024
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Processes for Producing Fluorided Solid Oxides and Uses Thereof in...
- Publication number 20240261771
- Publication date Aug 8, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR THE PREPARATION OF ALKENYL HALIDES
- Publication number 20240254065
- Publication date Aug 1, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C07 - ORGANIC CHEMISTRY
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
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
HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...
- Publication number 20240150501
- Publication date May 9, 2024
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Dual Catalyst System for Producing High Density Polyethylenes With...
- Publication number 20240076424
- Publication date Mar 7, 2024
- Chevron Phillips Chemical Company LP
- Errun Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS FOR THE...
- Publication number 20240043577
- Publication date Feb 8, 2024
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS WITH AN...
- Publication number 20230416423
- Publication date Dec 28, 2023
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...
- Publication number 20230391897
- Publication date Dec 7, 2023
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Processes for Producing Fluorided Solid Oxides and Uses Thereof in...
- Publication number 20230364598
- Publication date Nov 16, 2023
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
BIMODAL POLYETHYLENE COPOLYMERS
- Publication number 20230272197
- Publication date Aug 31, 2023
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
DUAL METALLOCENE BIMODAL HDPE RESINS WITH IMPROVED STRESS CRACK RES...
- Publication number 20230227592
- Publication date Jul 20, 2023
- Chevron Phillips Chemical Company LP
- Youlu YU
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
MODIFICATIONS OF SULFATED BENTONITES AND USES THEREOF IN METALLOCEN...
- Publication number 20230192909
- Publication date Jun 22, 2023
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
CONTROLLING LONG-CHAIN BRANCH CONTENT WITH DUAL ACTIVATOR-SUPPORTS
- Publication number 20230192914
- Publication date Jun 22, 2023
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- C07 - ORGANIC CHEMISTRY
Information Patent Application
POLYOLEFIN PROCESS MONITORING AND CONTROL
- Publication number 20230183402
- Publication date Jun 15, 2023
- Chevron Phillips Chemical Company LP
- Paul J. DesLauriers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
MODULATING CO-MONOMER SELECTIVITY USING NON-COVALENT DISPERSION INT...
- Publication number 20230098789
- Publication date Mar 30, 2023
- Chevron Phillips Chemical Company LP
- Steven M. Bischof
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS FOR THE...
- Publication number 20230078920
- Publication date Mar 16, 2023
- Chevron Phillips Chemical Company LP
- Qing Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Processes for Producing Fluorided Solid Oxides and Uses Thereof in...
- Publication number 20220331790
- Publication date Oct 20, 2022
- Chevron Phillips Chemical Company LP
- Max P. McDaniel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Dual Component LLDPE Copolymers with Improved Impact and Tear Resis...
- Publication number 20220315744
- Publication date Oct 6, 2022
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
DUAL CATALYST SYSTEM FOR PRODUCING POLYETHYLENE WITH LONG CHAIN BRA...
- Publication number 20220127395
- Publication date Apr 28, 2022
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
CATALYST COMPOSITION AND METHOD FOR PREPARING POLYETHYLENE
- Publication number 20210395413
- Publication date Dec 23, 2021
- Chevron Phillips Chemical Company LP
- Graham R. Lief
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Methods for Determining Transition Metal Compound Concentrations in...
- Publication number 20210391034
- Publication date Dec 16, 2021
- Chevron Phillips Chemical Company LP
- Richard M. Buck
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DUAL CATALYST SYSTEM FOR PRODUCING POLYETHYLENE WITH LONG CHAIN BRA...
- Publication number 20210388130
- Publication date Dec 16, 2021
- Chevron Phillips Chemical Company LP
- Jeremy M. Praetorius
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METALLOCENE CATALYSTS FOR POLYETHYLENE
- Publication number 20210261697
- Publication date Aug 26, 2021
- Chevron Phillips Chemical Company LP
- Errun Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Person

Patents Grantslast 30 patents

High porosity fluorided silica-coated alumina activator-supports an...

Controlling long-chain branch content with dual activator-supports

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

Modifications of sulfated bentonites and uses thereof in metallocen...

Processes for producing fluorided solid oxides and uses thereof in...

Catalyst composition and method for preparing polyethylene

Bimodal polyethylene copolymers

Processes for preparing metallocene-based catalyst systems for the...

High porosity fluorided silica-coated alumina activator-supports an...

Dual catalyst system for producing polyethylene with long chain bra...

Modulating co-monomer selectivity using non-covalent dispersion int...

Dual catalyst system for producing high density polyethylenes with...

Processes for preparing metallocene-based catalyst systems for the...

Polyolefin process monitoring and control

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

Methods for determining transition metal compound concentrations in...

Processes for producing fluorided solid oxides and uses thereof in...

Bimodal polyethylene copolymers

Dual component LLDPE copolymers with improved impact and tear resis...

Polyolefin process monitoring and control

Dual component LLDPE copolymers with improved impact and tear resis...

Processes for producing fluorided solid oxides and uses thereof in...

Dual component LLDPE copolymers with improved impact and tear resis...

Dual component LLDPE copolymers with improved impact and tear resis...

Metallocene catalysts for polyethylene

Methods for determining the activity of an activated chemically-tre...

Methods for terminating olefin polymerizations

Dual catalyst system for producing polyethylene with long chain bra...

Silica-coated alumina activator-supports for metallocene catalyst c...

Catalyst composition and method for preparing polyethylene

Patents Applicationslast 30 patents

HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...

METHODS FOR PREPARING METALLOCENE COMPOUNDS

CONTROLLING LONG-CHAIN BRANCH CONTENT WITH DUAL ACTIVATOR-SUPPORTS

DETERMINING THE LIQUID COMPOSITION IN A LOOP SLURRY POLYMERIZATION...

MODIFICATIONS OF SULFATED BENTONITES AND USES THEREOF IN METALLOCEN...

CATALYST COMPOSITION AND METHOD FOR PREPARING POLYETHYLENE

Processes for Producing Fluorided Solid Oxides and Uses Thereof in...

METHOD FOR THE PREPARATION OF ALKENYL HALIDES

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

OLIGOMERIZATION OF ALPHA OLEFINS USING SUPPORTED METALLOCENE CATALY...

HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...

Dual Catalyst System for Producing High Density Polyethylenes With...

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

PROCESSES FOR PREPARING METALLOCENE-BASED CATALYST SYSTEMS WITH AN...

HIGH POROSITY FLUORIDED SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS AN...

Processes for Producing Fluorided Solid Oxides and Uses Thereof in...

BIMODAL POLYETHYLENE COPOLYMERS

DUAL METALLOCENE BIMODAL HDPE RESINS WITH IMPROVED STRESS CRACK RES...

MODIFICATIONS OF SULFATED BENTONITES AND USES THEREOF IN METALLOCEN...

CONTROLLING LONG-CHAIN BRANCH CONTENT WITH DUAL ACTIVATOR-SUPPORTS

POLYOLEFIN PROCESS MONITORING AND CONTROL

MODULATING CO-MONOMER SELECTIVITY USING NON-COVALENT DISPERSION INT...

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

Processes for Producing Fluorided Solid Oxides and Uses Thereof in...

Dual Component LLDPE Copolymers with Improved Impact and Tear Resis...

DUAL CATALYST SYSTEM FOR PRODUCING POLYETHYLENE WITH LONG CHAIN BRA...

CATALYST COMPOSITION AND METHOD FOR PREPARING POLYETHYLENE

Methods for Determining Transition Metal Compound Concentrations in...

DUAL CATALYST SYSTEM FOR PRODUCING POLYETHYLENE WITH LONG CHAIN BRA...

METALLOCENE CATALYSTS FOR POLYETHYLENE