William H Peters

US Patent:

49621360, Oct 9, 1990

Filed:

Apr 25, 1988

Appl. No.:

7/185535

Inventors:

William E. Peters - Danville IN

Assignee:

Alphaflex Industries, Inc. - Indianapolis IN

International Classification:

C08K 700

US Classification:

523220

Abstract:

Compositions are disclosed containing an elastomer, particulate polytetrafluoroethytlene and an amount of molybdenum disulfide effective to permit their manufacture. The particulate polytetrafluoroethylene may include amounts from 25 percent by weight to 80 percent by weight, and/or include small amounts of fibrillated polytetrafluoroethylene. Also disclosed are additives for such compositions, and methods for preparing such compositions and additives using polytetrafluoroethylene and molybdenum disulfide, and improved compositions and products.

US Patent:

45968390, Jun 24, 1986

Filed:

Aug 17, 1984

Appl. No.:

6/642128

Inventors:

William E. Peters - Danville IN

International Classification:

B05D 508
C08K 310

US Classification:

523175

Abstract:

A composition is disclosed containing particulate polytetrafluoroethylene in amounts from 15 percent by weight to 80 percent by weight incorporated in an elastomer with an amount of molybdenum disulfide effective to permit its manufacture and in some cases lend its properties, and methods for preparing such compositions and for using molybdenum disulfide, and fibrillated particulate polytetrafluoroethylene to improve compositions and products are also disclosed.

US Patent:

53938194, Feb 28, 1995

Filed:

Feb 25, 1994

Appl. No.:

8/201765

Inventors:

William E. Peters - Danville IN

Assignee:

Alphaflex Industries - Indianapolis IN

International Classification:

C08K 310
C08K 330
C08L 5302
C08L 2712

US Classification:

524406

Abstract:

A bitumen and asphalt modifier comprises thermoplastic elastomeric copolymer and an effective amount of a fibrillated polytetrafluoroethylene and molybdenum disulfide particles. The thermoplastic elastomeric copolymer comprises two incompatible polymers forming a two-phase copolymer including a thermoplastic end block polymer and an elastomeric mid block polymer. The asphalt modifier is made by mixing together under high shear particles of a thermoplastic elastomeric copolymer, fibrillatable polytetrafluoroethylene and molybdenum disulfide until the fibrillatable polytetrafluoroethylene is substantially fibrillated and combined with the thermoplastic elastomeric copolymer.

US Patent:

53995988, Mar 21, 1995

Filed:

Mar 3, 1994

Appl. No.:

8/205191

Inventors:

William E. Peters - Danville IN

Assignee:

Alphaflex Industries - Indianapolis IN

International Classification:

C08L 9500
C08L 5302
C08L 2712
C08K 330

US Classification:

524 68

Abstract:

An asphalt composition comprises asphalt mixed with an asphalt modifier, which combines a thermoplastic elastomeric copolymer and an effective amount of a fibrillated polytetrafluoroethylene and molybdenum disulfide particles. The thermoplastic elastomeric copolymer preferably comprises two incompatible polymers forming a two-phase copolymer including a thermoplastic end block polymer and an elastomeric mid block polymer. Preferably, the thermoplastic end block polymer is a styrene polymer and the elastomeric mid block polymer is selected from a group consisting of polybutadiene, polyisoprene and poly(ethylene-butylene). The asphalt modifier is made by mixing together under high shear, as for example, in a twin screw extruder, particles of a thermoplastic elastomeric copolymer, fibrillatable polytetrafluoroethylene and molybdenum disulfide until the fibrillatable polytetrafluoroethylene is substantially fibrillated and combined with the thermoplastic elastomeric copolymer. A preferred asphalt modifier comprises about 2 to about 12 parts of fibrillated polytetrafluoroethylene and molybdenum disulfide particles per 100 parts by weight of copolymer, with the ratio of fibrillated polytetrafluoroethylene to molybdenum disulfide being about 3 to 1 by weight.

US Patent:

56456034, Jul 8, 1997

Filed:

Jul 25, 1995

Appl. No.:

8/505522

Inventors:

William E. Peters - Danville IN

International Classification:

A61F 230
C08K 330
C08K 310
C08L 2302

US Classification:

623 20

Abstract:

A modified non-elastomeric thermoplastic composition includes a non-elastomeric thermoplastic modified by molybdenum disulfide, polytetrafluoroethylene and an elastomeric binder.

US Patent:

54182700, May 23, 1995

Filed:

Apr 12, 1994

Appl. No.:

8/226692

Inventors:

William E. Peters - Danville IN

Assignee:

Alphaflex Industries, Inc. - Indianapolis IN

International Classification:

C08K 330
C08K 310
C08L 5302
C08L 2712

US Classification:

524406

Abstract:

A composition comprises fibrillated polytetrafluoroethylene, molybdenum disulfide and a thermoplastic elastomeric material. In the composition, fibrillatable polytetrafluoroethylene is preassociated with molybdenum disulfide and combined with a thermoplastic elastomeric copolymer in relative amounts from as low as about 2 parts per hundred rubber to as high as about 12 parts per hundred rubber, with the balance thermoplastic elastomeric copolymer and filler. The composition can further include an unpolymerized polytetrafluoroethylene binder residue of the fibrillated polytetrafluoroethylene.