Susan M Clift

US Patent:

6420445, Jul 16, 2002

Filed:

Jan 19, 2000

Appl. No.:

09/487087

Inventors:

Nigel Barksby - Dunbar WV
Bruce D. Lawrey - Charleston WV
Susan M. Clift - Lansdale PA

Assignee:

Bayer Antwerp N.V. - Antwerpen

International Classification:

C08J 904

US Classification:

521159, 521130, 521160, 521176, 521174, 528 59, 528 61, 528 64, 528 65, 528 63, 528 67, 528 76, 528 60

Abstract:

Elastomers with improved physical properties, particularly hardness, resilience, tear strength, and compression set, may be prepared by the chain extension or moisture cure of isocyanate-terminated prepolymers prepared from a polyol component comprising a high molecular weight, low unsaturation polyoxypropylene diol and a low molecular weight diol. The elastomers are useful for applications such as rollers and other applications for which these physical properties are important.

US Patent:

56962215, Dec 9, 1997

Filed:

Jul 15, 1996

Appl. No.:

8/680734

Inventors:

Nigel Barksby - Dunbar WV
Bruce D. Lawrey - Charleston WV
Susan M. Clift - Lansdale PA

Assignee:

ARCO Chemical Technology, L.P. - Greenville DE

International Classification:

C08G 1810
C07C25700

US Classification:

528 64

Abstract:

Elastomers with improved physical properties, particularly hardness and rebound, may be prepared by the diamine chain extension or moisture cure of low isocyanate group content, toluene diisocyanate-based prepolymers prepared from a polyol component comprising a high molecular weight, low unsaturation polyoxypropylene diol and a low molecular weight diol. The elastomers are useful for applications such as rollers and other applications where hardness and rebound are important.

US Patent:

47867035, Nov 22, 1988

Filed:

Apr 15, 1987

Appl. No.:

7/038810

Inventors:

William E. Starner - Freeland PA
Jeremiah P. Casey - Emmaus PA
Barton Milligan - Coplay PA
Susan M. Clift - North Wales PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C08G 1830

US Classification:

528 63

Abstract:

This invention relates to a polyisocyanate prepolymer for polyurethane/urea elastomer synthesis and to the resulting elastomer. The prepolymer is formed by reacting toluenediisocyanate with a long chain polyol under conditions such that essentially a 2:1 adduct is formed. Excess toluenediisocyanate is removed prior to forming the elastomer.

US Patent:

49373064, Jun 26, 1990

Filed:

Nov 2, 1988

Appl. No.:

7/266463

Inventors:

Jeremiah P. Casey - Emmaus PA
Susan M. Clift - North Wales PA
Kenneth M. Kem - Old Zionsville PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C08G 1818
C08G 1820

US Classification:

528 73

Abstract:

The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of an aromatic diamine, preferably a diaminobenzamide, to form a catalytic polyurethane chain extender. These chain extenders are polyurethane catalysts that provide adequate cure without residual odor and safety hazards associated with the more traditional tertiary amine catalysts. When reacted with the isocyanate reactive group the non-tertiary amine portion of the chain extender is bound to the polymeric network. Diffusion of the catalyst species from the polyurethane has been prevented, thus negating odor and toxicity as problems. The aromatic diamine provides enhanced polyurethane physical properties.

US Patent:

49083945, Mar 13, 1990

Filed:

Nov 4, 1988

Appl. No.:

7/267217

Inventors:

Jeremiah P. Casey - Emmaus PA
Susan M. Clift - North Wales PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C08G 1818

US Classification:

521163

Abstract:

The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of a diaminobenzoate to form catalytic polyurethane chain extender. These chain extenders are polyurethane catalysts which provide adequate cure without residual odor and safety hazards associated with the more traditional tertiary amine catalysts. When reacted with the isocyanate reactive group the non-tertiary amine portion of the chain extender is bound to the polymeric network thereby preventing diffusion of the catalyst species from the polyurethane and negating odor and toxicity as problems. The diaminobenzoate provides enhanced polyurethane physical properties.

US Patent:

54534780, Sep 26, 1995

Filed:

May 4, 1993

Appl. No.:

8/028494

Inventors:

Kevin R. Lassila - Allentown PA
Michael E. Ford - Coopersburg PA
Kenneth M. Kem - Emmaus PA
Susan M. Clift - Lansdale PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C08G 1810

US Classification:

528 64

Abstract:

This invention relates to o-tolidines which have a tert-butyl substituent ortho to an amine group. These compositions are represented by the formula: ##STR1## where R. sub. 1 =i-propyl, or t-butyl, and where R. sub. 2 =hydrogen, i-propyl, or t-butyl. The compositions are useful in the preparation of polyepoxide resins as well as polyurethanes, polyamides and polyimides.

US Patent:

58563725, Jan 5, 1999

Filed:

May 23, 1996

Appl. No.:

8/652062

Inventors:

David J. Ho - Singapore, SG
William A. Gill - South Charleston WV
Susan M. Clift - Lansdale PA
Nigel Barksby - Dunbare WV

Assignee:

ARCO Chemical Technology, L.P. - Greenville DE

International Classification:

C08G 1810

US Classification:

521159

Abstract:

Microcellular polyurethane elastomer shoe sole components have exceptional physical properties may be prepared from isocyanate-terminated prepolymers derived from polyoxypropylene diols having a molecular weight of from about 2000 Da to 8000 Da, an unsaturation less than about 0. 02 meq/g, and a random oxyethylene content of from about 5 to about 15 weight percent. The shoe sole components exhibit high tensile strength, elongation, resilience, and in addition have excellent tear strength, particularly 90. degree. angle tear.

US Patent:

50344269, Jul 23, 1991

Filed:

Jan 22, 1990

Appl. No.:

7/468410

Inventors:

Jeremiah P. Casey - Emmaus PA
Susan M. Clift - North Wales PA
Kenneth M. Kem - Old Zionsville PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C08G 1818
C08G 1832

US Classification:

521163

Abstract:

The present invention relates to a process for the production of polyurethanes wherein a tertiary amine functionality is incorporated into the side chain of an aromatic diamine, preferably a diaminobenzamide, to form a catalytic polyurethane chain extender. These chain extenders are polyurethane catalysts that provide adequate cure without residual odor and safety hazards associated with the more traditional tertiary amine catalysts. When reacted with the isocyanate reactive group the non-tertiary amine portion of the chain extender is bound to the polymeric network. Diffusion of the catalyst species from the polyurethane has been prevented, thus negating odor and toxicity as problems. These aromatic diamines provide enhanced polyurethane physical properties.