Anthony M Allen

US Patent:

6554961, Apr 29, 2003

Filed:

Jun 12, 2000

Appl. No.:

09/592681

Inventors:

Richard James Riehle - Wilmington DE
Anthony J. Allen - Wilmington DE
Michaela Hofbauer - Roosendaal, NL
Alfred Jacques Haandrikman - Amersfoort, NL
Ronald Busink - Bennekom, NL
Mark T. Crisp - Amersfoort, NL
John James Hoglen - Newark DE
Huai Nan Cheng - Wilmington DE
John Arthur Lapre - Ede, NL
Harold Jabloner - Landenburg PA

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

D21H 1755

US Classification:

1621643, 1621646, 524 17, 524422, 524608, 435262, 528486, 528487

Abstract:

Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50Â C. , and a pH of about 2. 5 to 3. 5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50Â C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD. A paper product containing the storage stable polyaminopolyamide-epihalohydrin resin, when corrected for adding at about a 1 wt % addition level of the polyaminopolyamide-epihalohydrin resin, contains less than about 250 ppb of CPD.

US Patent:

6808597, Oct 26, 2004

Filed:

Jul 9, 2002

Appl. No.:

10/191952

Inventors:

Anthony J. Allen - Wilmington DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

B31F 112

US Classification:

162111, 156183, 162112, 1621643, 1621646, 264282, 264283, 524503

Abstract:

Methods for making creping adhesives and using them in the creping of cellulosic fiber webs. The creping adhesives are a combination of polyamine-epihalohydrin and poly(vinyl alcohol). The method comprises the preparation and application of the creping adhesives to attain strong adhesion of fiber webs onto a drying surface, and the creping of the fiber webs to obtain a soft, bulky tissue paper web.

US Patent:

7175740, Feb 13, 2007

Filed:

Mar 25, 2003

Appl. No.:

10/396155

Inventors:

Richard James Riehle - Wilmington DE, US
Anthony J. Allen - Wilmington DE, US
Michaela Hofbauer - Roosendaal, NL
Alfred Jacques Haandrikman - Amersfoort, NL
Ronald Busink - Bennekom, NL
Mark T. Crisp - Amersfoort, NL
John James Hoglen - Newark DE, US
Huai Nan Cheng - Wilmington DE, US
John Arthur Lapre - Ede, NL
Harold Jabloner - Landenburg PA, US

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

D21H 17/55
D21H 21/20
C08G 69/46

US Classification:

1621643, 1621646, 435262, 4352625, 524 17

Abstract:

Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50 C. , and a pH of about 2. 5 to 3. 5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50 C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD. A paper product containing the storage stable polyaminopolyamide-epihalohydrin resin, when corrected for adding at about a 1 wt % addition level of the polyaminopolyamide-epihalohydrin resin, contains less than about 250 ppb of CPD.

US Patent:

7943705, May 17, 2011

Filed:

Jan 18, 2008

Appl. No.:

12/016494

Inventors:

Anthony J. Allen - Wilmington DE, US

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08L 77/00
D21H 21/20

US Classification:

525430, 1621643, 525420

Abstract:

Polyamidoamine (PAE) resins are prepared from polyamidoamine made with excess amine, which are reacted with a specifically defined amount of difunctional crosslinker. The amount of difunctional crosslinker used is based on the polyamidoamine amine number and reduced specific viscosity (RSV). The PAE resin is prepared by first synthesizing a polyamidoamine from a polyamine and a polycarboxylic acid or polycarboxylic acid derivative, wherein the polyamine is present in a molar excess, said molar excess being from about 1. 02 to 2. 00, then reacting the polyamidoamine with difunctional crosslinker, wherein the weight % of difunctional crosslinker to polyamidoamine solids is no more than about 0. 308(amine number/RSV)—9. 18 or 385(amine number/RSV)—5.

US Patent:

7977948, Jul 12, 2011

Filed:

Dec 19, 2007

Appl. No.:

11/959922

Inventors:

Anthony J. Allen - Gilbert AZ, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

G01R 31/08

US Classification:

324522, 324525, 324527

Abstract:

A sensor device determines a value based on a sensed parameter by applying a voltage across two voltage terminals of a sensor. In response, the sensor provides an electrical signal representative of a sensed parameter to a controller via a pair of conductors. The controller samples the electrical signal to determine the value. In addition, the controller alternates the polarity of the voltage applied to the voltage terminals, thereby reducing the risk of damage to the conductors due to ion drift.

US Patent:

20020096288, Jul 25, 2002

Filed:

Jul 13, 2001

Appl. No.:

09/903571

Inventors:

Anthony Allen - Wilmington DE, US

Assignee:

HERCULES INCORPORATED - Wilmington DE

International Classification:

D21H017/34
D21H015/04

US Classification:

162/168100, 162/111000

Abstract:

Composition comprising at least one water soluble polymer, such as polyamidoamine-epichlorohydrin resin, polyamine-epichlorohydrin resin, polyvinyl alcohol, etc. and at least one stabilizer, such as hypophosphorous acid, phosphorous acid, hypodiphosphoric acid, etc. and salts thereof, suitable as creping adhesive for paper.

US Patent:

20050006042, Jan 13, 2005

Filed:

May 14, 2003

Appl. No.:

10/438117

Inventors:

Richard Riehle - Wilmington DE, US
Anthony Allen - Wilmington DE, US
Michaela Hofbauer - Roosendaul, NL
Alfred Haandrikman - Amersfoort, NL
Ronald Busink - Bennekom, NL
Mark Crisp - Amersfoort, NL
John Hoglen - Newark DE, US
Huai Cheng - Wilmington DE, US
Francis Carlin - Newark DE, US
John Lapre - Ede, NL
Harold Jabloner - Landenburg PA, US

International Classification:

D21H017/52

US Classification:

162164300, 162158000

Abstract:

Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50 C., and a pH of about 2.5 to 3.5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50 C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD. A paper product containing the storage stable polyaminopolyamide-epihalohydrin resin, when corrected for adding at about a 1 wt % addition level of the polyaminopolyamide-epihalohydrin resin, contains less than about 250 ppb of CPD. Moreover, a resin can be prepared starting from a prepolymer having a low acid number or low concentration of acid end groups. The invention is also directed to papers containing the resins.

US Patent:

20070137821, Jun 21, 2007

Filed:

Dec 27, 2006

Appl. No.:

11/645968

Inventors:

Richard Riehle - Wilmington DE, US
Anthony Allen - Wilmington DE, US
Michaela Hofbauer - Roosendaal, NL
Alfred Haandrikman - Amersfoort, NL
Ronald Busink - Bennekom, NL
Mark Crisp - Amersfoort, NL
John Hoglen - Newark DE, US
Huai Cheng - Wilmington DE, US
Francis Carlin - Newark DE, US
John Lapre - Ede, NL
Harold Jabloner - Landenburg PA, US

International Classification:

D21H 19/30
C08G 69/48

US Classification:

162164600, 528297000

Abstract:

Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50 C., and a pH of about 2.5 to 3.5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50 C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD. A paper product containing the storage stable polyaminopolyamide-epihalohydrin resin, when corrected for adding at about a wt % addition level of the polyaminopolyamide-epihalohydrin resin, contains less than about 250 ppb of CPD. Moreover, a resin can be prepared starting from a prepolymer having a low acid number or low concentration of acid end groups. The invention is also directed to papers containing the resins.