Bennett N Epstein

US Patent:

52740331, Dec 28, 1993

Filed:

Feb 20, 1992

Appl. No.:

7/837415

Inventors:

Bennett N. Epstein - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 7700

US Classification:

525 66

Abstract:

Tough, high melt flow, low molecular weight polyamide compositions containing toughening polymers are obtained by blending conventional polyamides with the toughening polymer and then mixing the blend with very low molecular weight polyamides which are capable of reacting with the conventional polyamide by transamidation.

US Patent:

44106610, Oct 18, 1983

Filed:

Sep 29, 1982

Appl. No.:

6/427414

Inventors:

Bennett N. Epstein - Wilmington DE
Rolando U. Pagilagan - Parkersburg WV

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 7700

US Classification:

525 66

Abstract:

Amorphous thermoplastic polyamide can be combined with semicrystalline thermoplastic polyamides and toughening agents to produce molding blends having good notched Izod values in molded form.

US Patent:

41743580, Nov 13, 1979

Filed:

Apr 11, 1977

Appl. No.:

5/786201

Inventors:

Bennett N. Epstein - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 7700

US Classification:

525183

Abstract:

Toughened multi-phase thermoplastic composition consisting essentially of one phase containing 60 to 99 percent by weight of a polyamide matrix resin of number average molecular weight of at least 5000, and 1 to 40 percent by weight of at least one other phase containing particles of at least one polymer having a particle size in the range of 0. 01 to 3. 0 microns and being ahdered to the polyamide, the at least one polymer having a tensile modulus in the range of 1. 0 to 20,000 p. s. i. , the ratio of the tensile modulus of the polyamide matrix to tensile modulus of said at least one polymer being greater than 10 to 1. Said at least one polymer is either a branched or straight chain polymer. The toughened compositions are useful for making molded and extruded parts. Such parts possess greater ductility, less reduction in toughness from scratches and molded in notches and reduced susceptibility to catastrophic failure when compared to known melt fabricated materials.

US Patent:

44043171, Sep 13, 1983

Filed:

Sep 29, 1982

Appl. No.:

6/427479

Inventors:

Bennett N. Epstein - Wilmington DE
Rolando U. Pagilagan - Parkersburg WV

Assignee:

E. I. Du Pont de Nemours & Co. - Wilmington DE

International Classification:

C08L 7700

US Classification:

524538

Abstract:

Particular amorphous thermoplastic polyamide copolymers can be combined with semicrystalline thermoplastic polyamides to produce molding resins having a wide variety of applications depending on the relative amounts of the amorphous copolymer and the crystallizable polyamide present.

US Patent:

41728599, Oct 30, 1979

Filed:

May 23, 1975

Appl. No.:

5/580514

Inventors:

Bennett N. Epstein - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 6702

US Classification:

428402

Abstract:

Toughened multi-phase thermoplastic composition consisting essentially of one phase containing 60 to 99 percent by weight of a polyester including polycarbonate matrix resin of inherent viscosity of at least 0. 35 deciliter/gram, and 1 to 40 percent by weight of at least one other phase containing particles of at least one random copolymer having a particle size in the range of 0. 01 to 3. 0 microns and being adhered to the polyester, the at least one random copolymer having a tensile modulus in the range of 1. 0 to 20,000 p. s. i. , the ratio of the tensile modulus of the polyester matrix resin to tensile modulus of said at least one polymer being greater than 10 to 1. Said at least one polymer is either a branched or straight chain polymer. The toughened compositions are useful for making molded and extruded parts. Such parts possess greater ductility, less reduction in toughness from scratches and molded in notches and reduced susceptibility to catastrophic failure when compared to known melt fabricated materials.

US Patent:

51129086, May 12, 1992

Filed:

Mar 5, 1990

Appl. No.:

7/489774

Inventors:

Bennett N. Epstein - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 7700

US Classification:

525 66

Abstract:

Tough, high melt flow, low molecular weight polyamide compositions containing toughening polymers are obtained by blending conventional polyamides with the toughening polymer and then mixing the blend with very low molecular weight polyamides which are capable of reacting with the conventional polyamide by transamidation.

Address:

511 E 80 St APT 6D, New York, NY 10075

Phone:

(212)6871230

VIN:

1HGCP26879A155591

Make:

HONDA

Model:

ACCORD

Year:

2009