Gregory D Copeland

US Patent:

7629420, Dec 8, 2009

Filed:

Feb 6, 2007

Appl. No.:

11/671494

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Michael Gruender - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Jerry Zucker - Charleston SC, US

Assignee:

PBI Performance Products, Inc. - Charlotte NC

International Classification:

C08L 77/06
C08L 79/06
C08L 79/08

US Classification:

525435, 525420, 525425, 525432, 525436, 525931

Abstract:

A polymer blend comprises PBI, PAEK, and PEI. A method of making the foregoing blend comprises the steps of intimately blending PBI, PAEK, and PEI by dissolving PBI, PAEK, and PEI in a strong acid or melt blending PBI, PAEK, and PEI.

US Patent:

7915351, Mar 29, 2011

Filed:

Feb 5, 2007

Appl. No.:

11/671169

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Michael Gruender - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Tim Hsu - State College PA, US

Assignee:

PBI Performance Products, Inc. - Charlotte NC

International Classification:

C08L 65/00
C08L 79/00
C08L 79/04

US Classification:

525417, 525420, 525435, 525471, 525534

Abstract:

A process for producing a solution blend of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK). The PBI is mixed with sulfuric acid at a temperature between 40 C. and 80 C. for 30 minutes to 2 hours to produce a PBI solution then cooled to room temperature to form a cooled PBI solution. Then PEKK is added to the cooled PBI solution to form a mixture and that mixture is stirred from 30 minutes to 2 hours at room temperature to form a stirred mixture. The stirred mixture is poured into an excess of water being stirred swiftly to form an aqueous mixture. The aqueous mixture is filtered to produce a blend. The blend is washed with water and dried. The resulting blend can yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.

US Patent:

8309662, Nov 13, 2012

Filed:

Jul 22, 2010

Appl. No.:

12/841277

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Michael Gruender - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Tim Hsu - State College PA, US

Assignee:

PBI Performance Products, Inc. - Charlotte NC

International Classification:

C08L 65/00
C08L 79/00
C08L 79/04

US Classification:

525417, 525420, 525435, 525471, 525534

Abstract:

A process for producing a solution blend of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK). The PBI is mixed with sulfuric acid at a temperature between 40 C. and 80 C. for 30 minutes to 2 hours to produce a PBI solution then cooled to room temperature to form a cooled PBI solution. Then PEKK is added to the cooled PBI solution to form a mixture and that mixture is stirred from 30 minutes to 2 hours at room temperature to form a stirred mixture. The stirred mixture is poured into an excess of water being stirred swiftly to form an aqueous mixture. The aqueous mixture is filtered to produce a blend. The blend is washed with water and dried. The resulting blend can yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.

US Patent:

8420732, Apr 16, 2013

Filed:

Dec 21, 2010

Appl. No.:

12/974089

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Barrie Davies - Waxhaw NC, US
Gregory S. Copeland - Tega Cay SC, US

Assignee:

PBI Performance Products, Inc. - Charlotte NC

International Classification:

C08L 77/00

US Classification:

524606, 524 86, 524115, 524183

Abstract:

A polybenzimidazole solution comprises a polybenzimidazole dissolved in an ionic liquid excluding 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydroxide, and 1-butyl-3-methylimidazolium tetrafluoroborate. The ionic liquid may be a salt having a melting point less than or equal to 100 C. The salt having a cation (+) and an anion (−). The cation may be selected from the group consisting of: choline, ammoniums, phosphoniums, pyridiniums, pyrrolidiniums, morpholimiums, pyrazoliums, sulfoniums, imidazoliums. The anion may be selected from the group consisting of: halides, bis(triflyl)amide, CFSO, hydroxides, nitrates, sulfates, acetates, cyanates, aluminates, borates, phosphates, phosphorates, alkylsulfates, tosylates.

US Patent:

20110189484, Aug 4, 2011

Filed:

Jan 27, 2011

Appl. No.:

13/014976

Inventors:

Karin M. Hudson - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Michael Gruender - Charlotte NC, US

International Classification:

C08G 73/18
C08J 9/00
C08K 5/41
C08K 5/20
C08K 5/3432
C08K 5/3415
B32B 5/00

US Classification:

428402, 521 50, 521 89, 521 90, 521 94, 521 88, 521 82

Abstract:

A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.

US Patent:

20120142830, Jun 7, 2012

Filed:

Feb 9, 2012

Appl. No.:

13/369347

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Barrie Davis - Waxhaw NC, US
Gregory S. Copeland - Tega Cay SC, US

International Classification:

C08K 5/3445
C08L 79/04

US Classification:

524105, 524606

Abstract:

A polybenzimidazole solution comprises a polybenzimidazole dissolved in an ionic liquid excluding 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium hydroxide, and 1-butyl-3-methylimidazolium tetrafluoroborate.

US Patent:

20130035454, Feb 7, 2013

Filed:

Oct 9, 2012

Appl. No.:

13/647431

Inventors:

Bobby G. Dawkins - Charlotte NC, US
Michael Gruender - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Tim Hsu - State College PA, US

International Classification:

C08L 71/00

US Classification:

525471

Abstract:

A process for producing a solution blend of a polybenzimidazole (PBI) and a polyetherketoneketone (PEKK). The PBI is mixed with sulfuric acid at a temperature between 40 C. and 80 C. for 30 minutes to 2 hours to produce a PBI solution then cooled to room temperature to form a cooled PBI solution. Then PEKK is added to the cooled PBI solution to form a mixture and that mixture is stirred from 30 minutes to 2 hours at room temperature to form a stirred mixture. The stirred mixture is poured into an excess of water being stirred swiftly to form an aqueous mixture. The aqueous mixture is filtered to produce a blend. The blend is washed with water and dried. The resulting blend can yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.

US Patent:

20130331470, Dec 12, 2013

Filed:

Jul 3, 2013

Appl. No.:

13/934265

Inventors:

Karin M. Hudson - Charlotte NC, US
Gregory S. Copeland - Tega Cay SC, US
Michael Gruender - Charlotte NC, US

Assignee:

PBI Performance Products Inc. - Charlotte NC

International Classification:

C08J 9/00

US Classification:

521 50

Abstract:

A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.