High melt strength polymers and method of making same

Details High melt strength polymers and method of making same High melt strength polymers and method of making same

2011-08-16

2011-08-16

Nutter, Nathan M (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S236000, C525S242000, C526S113000

Reexamination Certificate

active

07999039

ABSTRACT:
A process of making a polymer is described. The process includes contacting one or more olefinic monomers in the presence of at least a high molecular weight (HMW) catalyst and at least a low molecular weight (LMW) catalyst in a polymerization reactor system; and effectuating the polymerization of the one or more olefinic monomers in the polymerization reactor system to obtain an olefin polymer, wherein the LMW catalyst has an RvL, defined asRvL=[vinyl][vinyl]+[vinylidene]+[cis]+[trans]wherein [vinyl] is the concentration of vinyl groups in the olefin polymer produced by the low molecular weight catalyst expressed in vinyls/1,000 carbon atoms; [vinylidene], [cis] and [trans] are the concentration of vinylidene, cis and trans groups in the olefin polymer expressed in the number of the respective groups per 1,000 carbon atoms, of greater than 0.12, and wherein the HMW catalyst has a reactivity ratio, r1 of about 5 or less.

REFERENCES:
patent: 3984610 (1976-10-01), Elston
patent: 4500648 (1985-02-01), Malpass
patent: 4530914 (1985-07-01), Ewen et al.
patent: 4752597 (1988-06-01), Turner
patent: 4851489 (1989-07-01), Malpass
patent: 4935474 (1990-06-01), Ewen et al.
patent: 4937299 (1990-06-01), Ewen et al.
patent: 5047485 (1991-09-01), DeNicola, Jr.
patent: 5055438 (1991-10-01), Canich
patent: 5057475 (1991-10-01), Canich et al.
patent: 5064802 (1991-11-01), Stevens et al.
patent: 5096867 (1992-03-01), Canich
patent: 5132380 (1992-07-01), Stevens et al.
patent: 5272236 (1993-12-01), Lai et al.
patent: 5324800 (1994-06-01), Welborn, Jr. et al.
patent: 5470811 (1995-11-01), Jejelowo et al.
patent: 5530072 (1996-06-01), Shirodkar
patent: 5665800 (1997-09-01), Lai et al.
patent: 5679816 (1997-10-01), Timmers et al.
patent: 5685128 (1997-11-01), Chum et al.
patent: 5703180 (1997-12-01), Tsutsui et al.
patent: 5703187 (1997-12-01), Timmers
patent: 5783638 (1998-07-01), Lai et al.
patent: 5852152 (1998-12-01), Walton et al.
patent: 5882750 (1999-03-01), Mink et al.
patent: 5902867 (1999-05-01), Muskens et al.
patent: 5965756 (1999-10-01), McAdon et al.
patent: 6001941 (1999-12-01), Tsutsui et al.
patent: 6015868 (2000-01-01), Nickias et al.
patent: 6034021 (2000-03-01), Wilson et al.
patent: 6107147 (2000-08-01), Kim et al.
patent: 6114457 (2000-09-01), Markel et al.
patent: 6114486 (2000-09-01), Rowland et al.
patent: 6143854 (2000-11-01), Bamberger et al.
patent: 6147180 (2000-11-01), Markel et al.
patent: 6185349 (2001-02-01), Dammert et al.
patent: 6197910 (2001-03-01), Weng et al.
patent: 6207606 (2001-03-01), Lue et al.
patent: 6277931 (2001-08-01), Jaber et al.
patent: 6346575 (2002-02-01), Debras et al.
patent: 6369176 (2002-04-01), Laughner et al.
patent: 6372868 (2002-04-01), Szul et al.
patent: 6515155 (2003-02-01), Klosin et al.
patent: 6924342 (2005-08-01), Stevens et al.
patent: 7300983 (2007-11-01), Degroot et al.
patent: 0 773 257 (1997-05-01), None
patent: 1 059 332 (1999-06-01), None
patent: 97/48735 (1997-12-01), None
patent: WO 97/48735 (1997-12-01), None
patent: 00/50466 (2000-08-01), None
patent: WO 00/50466 (2000-08-01), None
patent: 01/14434 (2001-03-01), None
patent: WO 01/14434 (2001-03-01), None
Molecular Structure of Metallocene-Catalyzed Polyethylene: Rheologically Relevant Representation of Branching Architecture in Single Catalyst and Blended Systems; Stephane Costeux et al.; Macromolecules 2002, 35, 2514-2528.
Metallocene-Based Branch Block Thermoplastic Elastomers; Eric J. Markel et al.; Macromolecules 2000, 33, 8541-8548.
Bivariate Chain Length and Long Chain Branching Distribution for Co-Polymerization of Olefins and Polyolefin Chains Containing Terminal Double-Bonds; Joao B. P. Soares; Macromol. Theory Simul., 5, 547-572(1996).
PCT Written Opinion, International Application No. PCT/US02/07919, Mailing Date—Jul. 2, 2003.
PCT Notification of Transmittal of the International Preliminary Examination Report, International Application No. PCT/US02/07919, Mailing Date—Aug. 19, 2003.

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