Vu Quoc Dang

US Patent:

6433203, Aug 13, 2002

Filed:

Jul 14, 2000

Appl. No.:

09/600351

Inventors:

Tiziano Dallocco - Ferrara, IT
Vu Anh Dang - Bear DE
Lin-Chen Yu - Hockessin DE
Luigi Resconi - Ferrara, IT
Davide Balboni - Ferrara, IT
Alessia Boscarato - Ambrogio, IT
Colin Schaverien - Amsterdam, NL

Assignee:

Basell Technology Company BV

International Classification:

C07F 1700

US Classification:

556 11, 556 12, 556 53, 556 43, 556 58, 534 15, 502103, 502117, 526126, 526160, 526943

Abstract:

Metallocene compounds having the general formula (I): R are hydrocarbon groups, R are hydrogen or hydrocarbon groups; M is a transition metal of group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table; Mâ is a transition metal selected from those belonging to group 3 or to the lanthanide or actinide groups in the Periodic Table; X is a monoanionic ligand; p is an integer of from 0 to 3, being equal to the oxidation state of M minus two; q is an integer from 3 to 5; and n is an integer from 1 to 4, when the six-membered rings of formula (Ia) are not perhydrated, and is an integer of from 0 to 4, when the six-membered rings of formula (Ia) are perhydrated as well as in the compound of formula (Ib).

US Patent:

6444722, Sep 3, 2002

Filed:

Nov 2, 2000

Appl. No.:

09/703488

Inventors:

Vu A. Dang - Bear DE
Cheng Q. Song - Wilmington DE

Assignee:

Basell Poliolefine Italia S.p.A. - Milan

International Classification:

C08J 328

US Classification:

522157, 522158, 522161, 522114, 522120, 522122, 522125, 525244, 525259, 525261, 525266, 525284, 525302

Abstract:

Graft copolymers with low molecular weight side chains are prepared by (1) irradiating a propylene polymer material in the absence of oxygen, (2) adding a controlled amount of oxygen to the irradiated polymer material so that the polymer is exposed to an amount of oxygen greater than 0. 004% but less than 15% by volume at a temperature of 40Â C. to 140Â C. , to produce an oxidized propylene polymer material containing greater than 1 mmol total peroxide per kilogram of propylene polymer material, (3) optionally, heating the oxidized propylene polymer material in a non-oxidizing atmosphere to a temperature of at least 80Â C. but below the softening point of the polymer, and (4) treating the oxidized propylene polymer material in a non-oxidizing atmosphere with at least one grafting monomer that is capable of being polymerized by free radicals, in the presence of at least one additive to control the molecular weight of the side chains of the polymerized grafting monomer selected from (a) at least one hydroxylamine derivative polymerization inhibitor, and (b) at least one thio-, nitro-, or halogen-substituted aliphatic or aromatic compound, or an aliphatic or aromatic phosphine derivative, and (5) deactivating the residual free radicals in the resulting grafted propylene polymer material and removing any unreacted vinyl monomer from the material.

US Patent:

6518327, Feb 11, 2003

Filed:

Nov 2, 2000

Appl. No.:

09/704325

Inventors:

Vu A. Dang - Bear DE
Tam T. M. Phan - Bear DE
Jeanine A. Smith - West Grove PA
Cheng Q. Song - Wilmington DE

Assignee:

Basell Poliolefine Italia S.p.A. - Milan

International Classification:

C08F 245

US Classification:

522114, 522113, 522116, 522120, 522121, 522126, 522127, 522133, 522134, 522136, 522149, 522150, 522157, 522161, 244245, 244257, 244259, 244301, 244309

Abstract:

Graft copolymers are prepared, in a non-oxidizing atmosphere, by (1) irradiating a particulate olefin polymer material with high energy ionizing radiation, (2) treating the irradiated olefin polymer material with at least one grafting monomer that is capable of forming side chains on the olefin polymer material, in the presence of at least one additive to control the molecular weight of the side chains of the polymerized grafting monomer selected from (a) at least one hydroxylamine derivative polymerization inhibitor, and (b) at least one thio-, nitro-, or halogen-substituted aliphatic or aromatic compound or an aliphatic or aromatic phosphine derivative, and (3) deactivating the residual free radicals in the resulting grafted olefin polymer material and removing any unreacted vinyl monomer from the material. Graft copolymers with low molecular weight side chains are produced that are easier to process and have improved internal and surface morphology.

US Patent:

6677395, Jan 13, 2004

Filed:

Nov 27, 2002

Appl. No.:

10/305844

Inventors:

Vu A. Dang - Bear DE
Richard J. Fezza - Wilmington DE
Daniel E. Schneckenburger - Chesapeake City MD
Cheng Q. Song - Wilmington DE

Assignee:

Basell Poliolefine Italia S.p.A. - Milan

International Classification:

C08K 304

US Classification:

524432, 524495, 526348, 5263482, 5263484, 5263486, 5263487, 526437, 526357, 525515

Abstract:

Irradiated, oxidized olefin polymer dispersing aids for use in the manufacture of additive concentrates and additive-containing olefin polymer compositions.

US Patent:

6869982, Mar 22, 2005

Filed:

Nov 27, 2002

Appl. No.:

10/305872

Inventors:

Vu A. Dang - Bear DE, US
Richard J. Fezza - Wilmington DE, US
Daniel E. Schneckenburger - Chesapeake City MD, US
Cheng Q. Song - Wilimington DE, US

Assignee:

Basell Poliolefine Italia S.p.A. - Milan

International Classification:

C08F002/46

US Classification:

522112, 522111, 522150, 522157, 522158, 522161, 522 71, 522 74, 522 81, 522 83, 525 88, 525 89, 525191, 525240

Abstract:

Irradiated, oxidized olefin polymer coupling agents for use in the manufacture of non-halogenated flame retardant-containing and filler-containing olefin polymer compositions and coupling agent-containing olefin polymer concentrates.

US Patent:

6887940, May 3, 2005

Filed:

Nov 27, 2002

Appl. No.:

10/305816

Inventors:

Vu A. Dang - Bear DE, US
Dinshong Dong - Hockessin DE, US
Tam T. M. Phan - Bear DE, US
Cheng Q. Song - Wilmington DE, US

Assignee:

Basell Poliolefine Italia S.p.A. - Milan

International Classification:

C08F008/00
C08L023/00
C08L023/04
C08L033/04
C08L035/02

US Classification:

525191, 525192, 525194, 525195, 525196, 525197, 525198, 525217, 525222, 525225, 525232, 525240, 525262, 525263, 525266

Abstract:

A compatible blend of an engineering thermoplastic such as a polyamide and an olefin polymer material is prepared by (1) making an oxidized olefin polymer material containing carboxylic acid groups or derivatives thereof, (2) extruding a mixture of (a) the oxidized olefin polymer material from step (1), (b) an engineering thermoplastic, (c) optionally, an inorganic base, and (d) optionally, a non-oxidized olefin polymer material, and (3) recovering a blend of the engineering thermoplastic, the oxidized olefin polymer material or an ionomer thereof, which acts as a compatibilizer, and, optionally, the non-oxidized olefin polymer material. The oxidized olefin polymer material can be made by treating the olefin polymer material with an organic peroxide initiator while adding a controlled amount of oxygen.

US Patent:

7935740, May 3, 2011

Filed:

Dec 30, 2008

Appl. No.:

12/317875

Inventors:

Vu A. Dang - Bear DE, US
Dinshong Dong - Hockessin DE, US
Theodore Dziemianowicz - Bryn Mawr PA, US

Assignee:

Basell Poliolefine Italia s.r.l. - Milan

International Classification:

C08F 2/46

US Classification:

522157, 522 71, 522 74, 522 76, 522 78, 522150, 522158, 522184, 522186, 522912

Abstract:

The present subject matter relates to processes for irradiating visbroken propylene polymer compositions or extrudates of propylene polymer compositions containing a propylene polymer having a low polydispersity index and a non-phenolic stabilizer.

US Patent:

8440846, May 14, 2013

Filed:

Sep 30, 2010

Appl. No.:

12/894626

Inventors:

Vu A. Dang - Bear DE, US
Roger A. Grey - West Chester PA, US
Jay F. Miller - Chester Springs PA, US
Beaven S. Mandimutsira - Wynnewood PA, US

Assignee:

Lyondell Chemical Technology, L.P. - Houston TX

International Classification:

C07D 301/06
C07D 301/12

US Classification:

549533, 549531

Abstract:

The invention is a process for epoxidizing an olefin with hydrogen and oxygen in a solvent comprising acetonitrile in the presence of an quinone-acid salt and a catalyst comprising a titanium zeolite and a noble metal. The process results in higher productivity and improved selectivity to propylene oxide from hydrogen and oxygen, as compared to processes that use only a quinone.