1
Pieter Geert Pfeiffer: Pipe fittings. Fina Research, Grady K Bergen, June 18, 2002: US06406063 (96 worldwide citation)

A pipe fitting for coupling together opposed ends of two plastics pipes by fusion welding, the pipe fitting comprising an annular body having an inner cylindrical surface of plastics material surrounding a cylindrical cavity for receiving opposed ends of two plastics pipes to be coupled together, an ...


2
Razavi Abbas, Debras Guy: Catalyst and process for producing polyolefins.. Fina Research, October 12, 1994: EP0619325-A1 (61 worldwide citation)

The present invention provides a process for preparing polyolefins having a multimodal or at least bimodal molecular weight distribution by contacting in a reaction mixture under polymerization conditions at least one olefin and a catalyst system comprising a supported catalyst-component comprising ...


3
Guy Debras, Abbas Razavi, Jacques Michel: Production of multimodal polythylene. Fina Research, Gilbreth & Associates, February 12, 2002: US06346575 (55 worldwide citation)

A process for the preparation of polyethylene resins having a multimodal molecular weight distribution which comprises:


4
Guy Debras, Michel Messiaen: Production of polyethylene having a broad molecular weight distribution. Fina Research, Jim D Wheelington, April 24, 2001: US06221982 (46 worldwide citation)

A process for producing high density polyethylene in the presence of a Ziegler-Natta catalyst system in two liquid full loop reactors in series, wherein in a first reactor a first polyethylene product is polymerized substantially by homopolymerization of ethylene and hydrogen, optionally with a mino ...


5
Abbas Razavi, Guy L G Debras: Process for producing polyolefins and polyolefin catalyst. Fina Research, M Norwood Cheairs, Jim Wheelington, February 17, 1998: US05719241 (43 worldwide citation)

The present invention provides a process for preparing polyolefins having a multimodal or at least bimodal molecular weight distribution by contacting in a reaction mixture under polymerization conditions at least one olefin and a catalyst system comprising a supported catalyst-component comprising ...


6
Philippe Marechal: Process for producing polyolefins. Fina Research, Hitt Gaines & Boisbrun, March 12, 2002: US06355741 (42 worldwide citation)

A process for producing polyolefins having a bimodal molecular weight distribution, the process comprising producing a first polyolefin fraction in the presence of a catalyst in a first loop reactor, and producing a second polyolefin fraction in the presence of the catalyst in a second loop reactor ...


7
Abbas Razavi: Polyolefin production. Fina Research, Hitt Gaines & Boisbrun, February 4, 2003: US06515086 (39 worldwide citation)

A process for preparing polyolefins having a monomer length of up to C10, which comprises first contacting: (1) a metallocene catalyst component for the preparation of a polyolefin which comprises an isotactic polyolefin or syndiotactic/isotactic block polyolefin having a monomer length of up to C


8
Guy Debras, Abbas Razavi, Jacques Michel: Production of multimodal polyethylene. Fina Research, Gilbreth & Associates, May 20, 2003: US06566450 (38 worldwide citation)

A process for the preparation of polyethylene resins having a multimodal molecular weight distribution which comprises:


9
Etienne Laurent: High density multimodal polyethylene. Fina Research, Grady K Bergen, August 13, 2002: US06433095 (36 worldwide citation)

Provided is a high density multimodal polyethylene, having a shear ratio (SR) of 18 or more and a HLMI of 15 g/10 mins or less comprising at least 20% by weight of a high molecular weight fraction, which high molecular weight fraction has:


10
Raza Vi Abbas, Debras Guy: Process to produce bimodal polyolefins with metallocene catalysts using two reaction zones. Fina Research, December 2, 1998: EP0881237-A1 (35 worldwide citation)

A process for the preparation of polyolefins having a bi- or multimodal molecular weight distribution which comprises: (i) contacting olefin monomer and a first co-reactant with a catalyst system in a first reaction zone under first polymerisation conditions to produce a product comprising a first p ...