Charles T Arkens

US Patent:

52485730, Sep 28, 1993

Filed:

Jul 16, 1992

Appl. No.:

7/914277

Inventors:

Charles T. Arkens - Hatfield PA
Reginald T. Smart - Horsham PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

H01M 216

US Classification:

429250

Abstract:

This invention relates to improved textile fibers having deposited thereon a coagulable, multi-stage, latex binder. In addition, this invention relates to a method for improving the stiffness of textile materials by depositing thereon an acid-resistant, coagulable, multi-stage, latex binder wherein one stage enhances the stiffness of the textile fibers and another stage controls the coagulation temperature of the latex binder. The latex binder is particularly suitable for use in battery separators.

US Patent:

59772328, Nov 2, 1999

Filed:

Aug 1, 1997

Appl. No.:

8/904713

Inventors:

Charles Thomas Arkens - Hatfield PA
Scott Lind Egolf - Lansdale PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08K 338
C08K 316

US Classification:

524404

Abstract:

A formaldehyde-free curable aqueous composition comprising: (a) a polyacid comprising at least two carboxylic acid groups, anhydride groups, or salts of the polyacid thereof; (b) an active hydrogen compound containing at least two active hydrogen groups selected from the group consisting of hydroxyl, primary amino, secondary amino, and mixtures thereof; and (c) a fluoroborate accelerator; wherein the ratio of the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof to the number of equivalents of said hydroxyl groups is from 1/0. 01 to about 1/3, and wherein said carboxylic acid groups, anhydride groups, or salts thereof are neutralized to an extent of less than 35% with a fixed base is disclosed. A method for curing formaldehyde-free polyacids and a method for bonding glass fiber heat-resistant nonwovens with a formaldehyde-free binder are further disclosed.

US Patent:

51821796, Jan 26, 1993

Filed:

Dec 7, 1990

Appl. No.:

7/624178

Inventors:

Charles T. Arkens - Hatfield PA
Reginald T. Smart - Horsham PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

H01M 216

US Classification:

429254

Abstract:

This invention relates to improved textile fibers having deposited thereon a coagulable, multi-stage, latex binder. In addition, this invention relates to a method for improving the stiffness of textile materials by depositing thereon an acid-resistant, coagulable, multi-stage, latex binder wherein one stage enhances the stiffness of the textile fibers and another stage controls the coagulation temperature of the latex binder. The latex binder is particularly suitable for use in battery separators.

US Patent:

57187282, Feb 17, 1998

Filed:

Aug 26, 1996

Appl. No.:

8/703275

Inventors:

Charles Thomas Arkens - Hatfield PA
Scott Lind Egolf - Lansdale PA
Robert David Gleim - New Hope PA
Oscar Hsien-Hsiang Hsu - Lansdale PA
Kenneth John Wiesinger - Ambler PA

Assignee:

Rohm and Haas Company - Phila PA

International Classification:

D06M 13192

US Classification:

81161

Abstract:

This invention relates to a method for strengthening a cellulosic substrate by treating the substrate with a formaldehyde-free curable aqueous composition and curing the composition. The cellulosic substrates include, for example, paper oil- and air-filter stock, rayon nonwoven wipes, cellulosic laminating stock, cotton woven fabrics, and wood flakes suitable to be consolidated into flakeboard.

US Patent:

62219731, Apr 24, 2001

Filed:

Jun 6, 1995

Appl. No.:

8/467634

Inventors:

Charles Thomas Arkens - Hatfield PA
Robert David Gleim - New Hope PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F 814
C08F 840
C08F 2006

US Classification:

5253277

Abstract:

This invention relates to a formaldehyde-free curable aqueous composition containing a polyacid, a polyol and a phosphorous-containing accelerator. The composition may be used as a binder for heat resistant nonwovens such as nonwovens composed of fiberglass.

US Patent:

57635242, Jun 9, 1998

Filed:

Jun 20, 1994

Appl. No.:

8/262281

Inventors:

Charles Thomas Arkens - Hatfield PA
Robert David Gleim - New Hope PA

International Classification:

C08F 814

US Classification:

524549

Abstract:

This invention relates to a formaldehyde-free curable aqueous composition containing a polyacid, a polyol and a phosphorous-containing accelerator. The composition may be used as a binder for heat resistant nonwovens such as nonwovens composed of fiberglass.

US Patent:

59326891, Aug 3, 1999

Filed:

Apr 22, 1998

Appl. No.:

9/064473

Inventors:

Charles Thomas Arkens - Hatfield PA
Johnny Chung Nin U - Valbonne, FR

Assignee:

Rohm and Haas Company - Phila. PA

International Classification:

C08G 6900
C08F 800
C08L 7700

US Classification:

528335

Abstract:

A formaldehyde-free curable composition useful for binding nonwovens comprises (a) a polyacid comprising at least two carboxylic acid groups, anhydride groups, or salts of the polyacid thereof; (b) an active hydrogen compound containing at least two active hydrogen groups selected from the group consisting of hydroxyl, primary amino, secondary amino, and mixtures thereof; and (c) one or more compounds selected from the group consisting of cyanamide, dicyandiamide, 1,2-mono- or di-(C. sub. 1 -C. sub. 6 alkyl) substituted-3-cyanoguanidines such as ethyl-3-cyanoguanidine, 1,2-diethyl-3-cyanoguanidine, and 1,2-diisopropyl-3-cyanoguanidine, and 1,2-mono- or di-(C. sub. 6 -C. sub. 12 aryl) substituted-3-cyanoguanidines, such as phenyl-dicyandiamide; and, optionally (d) an accelerator; wherein the ratio of the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof to the number of equivalents of said active hydrogen groups is from 1/0. 01 to about 1/3, and wherein said carboxylic acid groups, anhydride groups, or salts thereof are neutralized to an extent of less than 35% by weight with a fixed base.

US Patent:

54275873, Jun 27, 1995

Filed:

Oct 22, 1993

Appl. No.:

8/142554

Inventors:

Charles T. Arkens - Hatfield PA
Scott L. Egolf - Lansdale PA
Robert D. Gleim - New Hope PA
Oscar H. Hsu - Lansdale PA
Kenneth J. Wiesinger - Ambler PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

D06M 13192
D06M 1404

US Classification:

81161

Abstract:

This invention relates to a method for strengthening a cellulosic substrate by treating the substrate with a formaldehyde-free curable aqueous composition and curing the composition. The cellulosic substrates include, for example, paper oil- and air-filter stock, rayon nonwoven wipes, cellulosic laminating stock, cotton woven fabrics, and wood flakes suitable to be consolidated into flakeboard.