John D Muzzy

US Patent:

6387967, May 14, 2002

Filed:

Mar 2, 2001

Appl. No.:

09/798208

Inventors:

John D. Muzzy - Atlanta GA
David W. Holty - Big Canoe GA
Douglas C. Eckman - Woodstock GA
John R. Stoll - Suwanee GA

Assignee:

Georgia Composites - Atlanta GA

International Classification:

C08J 1104

US Classification:

521 48, 521 405, 521 455, 521 47, 521 498, 523222, 428 347, 428 74, 428 95, 428 97, 428287, 264 371

Abstract:

Fiber-reinforced recycled thermoplastic composites and methods for their manufacture are presented. In a preferred embodiment, the thermoplastic composite incorporates a matrix of recycled thermoplastic and a plurality of high modulus fibers, with the recycled thermoplastic including polyethylene, polypropylene, nylon, PET and styrene-butadiene rubber, and the high modulus fibers including glass fibers, natural fibers, carbon fibers, and aramid fibers. Preferably, each of the high modulus fibers have a minimum length of approximately  of an inch and a modulus of approximately one million psi.

US Patent:

6756412, Jun 29, 2004

Filed:

Mar 1, 2002

Appl. No.:

10/087594

Inventors:

John D. Muzzy - Atlanta GA

Assignee:

Georgia Composites, Inc. - Atlanta GA

International Classification:

C08J 1104

US Classification:

521 48, 521 405, 521 455, 521 47, 521 498, 523222, 428 347, 428 74, 428 95, 428 97, 428287, 264 371

Abstract:

Fiber reinforced recycled thermoplastic composites and methods for their manufacture are presented. In a preferred embodiment, the thermoplastic composite incorporates a matrix of recycled thermoplastic and a plurality of high modulus, reinforcing fibers, with the recycled thermoplastic including polyethylene, polypropylene, nylon, PET and styrene-butadiene rubber, and the reinforcing fibers including glass fibers, natural fibers, carbon fibers, and aramid fibers. Preferably, each of the reinforcing fibers has a minimum length of approximately  of an inch and a modulus of approximately one million psi.

US Patent:

47464011, May 24, 1988

Filed:

Jan 6, 1986

Appl. No.:

6/816456

Inventors:

Ronnie S. Roberts - Atlanta GA
John D. Muzzy - Atlanta GA
George S. Faass - Bensalem PA

Assignee:

Georgia Tech Research Corp. - Atlanta GA

International Classification:

D21C 320

US Classification:

162 72

Abstract:

A process for the delignification of cellulosic materials, wherein a high-yield cellulose pulp and high-value by-product, such as reactive lignins of low molecular weight are produced, which comprises degassing lignocellulosic material, rapidly heating the lignocellulosic material in a liquor comprising water, an organic solvent and a buffer thereby maintaining a substantially neutral solvent extraction, such that said lignocellulosic material is cooked in the liquor as it is heated from a temperature of 150. degree. C. to a selected maximum temperature in the range of 200. degree. to 280. degree. C. ; and rapidly cooling the mixture to a temperature less than 150. degree. C. The reaction is controlled to maximize reactive lignin solvation while suppressing cellulose degradation.

US Patent:

53606612, Nov 1, 1994

Filed:

Oct 8, 1993

Appl. No.:

8/134181

Inventors:

John D. Muzzy - Atlanta GA

Assignee:

Georgia Tech Research Corp. - Atlanta GA

International Classification:

B32B 700

US Classification:

428260

Abstract:

An improved flexible towpreg article and a method of production therefor. The improved flexible towpreg article comprises a prepreg which comprises reinforcing filaments and matrix forming material comprising recycled plastics; the reinforcing filaments being substantially wetout by the matrix forming material such that the towpreg plies have a low void content compared to the multiply towpreg. The method of production for the improved flexible towpreg article includes the steps of spreading the reinforcing filaments; coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion of the matrix forming material to the reinforcing filaments; forming the prepreg by heating the matrix forming material contacting the reinforcing filaments until the matrix forming material liquefies and coats the reinforcing filaments; and cooling the prepregs in a manner such that substantial cohesion between neighboring towpreg plies is prevented until the matrix forming material solidifies.

US Patent:

51716305, Dec 15, 1992

Filed:

May 15, 1991

Appl. No.:

7/700559

Inventors:

John D. Muzzy - Atlanta GA
Babu Varughese - Grovetown GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

B32B 900

US Classification:

428294

Abstract:

This invention relates to an improved flexible towpreg and a method of production therefor. The improved flexible towpreg comprises a plurality of towpreg plies which comprise reinforcing filaments and matrix forming material; the reinforcing filaments being substantially wetout by the matrix forming material such that the towpreg plies are substantially void-free composite articles, and the towpreg plies having an average thickness less than about 100 microns. The method of production for the improved flexible towpreg comprises the steps of spreading the reinforcing filaments to expose individually substantially all of the reinforcing filaments; coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion of the matrix forming material to the reinforcing filaments; forming the towpreg plies by heating the matrix forming material contacting the reinforcing filaments until the matrix forming material liquifies and coats the reinforcing filaments; and cooling the towpreg plies in a manner such that substantial cohesion between neighboring towpreg plies is prevented until the matrix forming material solidifies.

US Patent:

40283585, Jun 7, 1977

Filed:

Sep 4, 1973

Appl. No.:

5/393718

Inventors:

Charles L. Liotta - Decatur GA
John D. Muzzy - Atlanta GA

International Classification:

C07D47340

US Classification:

260254

Abstract:

Novel purine compounds substituted with either fluorine or trimethylammonium are useful as adhesives or continuous and non-continuous coatings and are prepared by a novel process.

US Patent:

54097576, Apr 25, 1995

Filed:

Nov 10, 1993

Appl. No.:

8/132583

Inventors:

John D. Muzzy - Atlanta GA
Jonathan S. Colton - Atlanta GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

B32B 512

US Classification:

428114

Abstract:

An improved flexible towpreg tape of a known geometry and a method of production therefor. The improved flexible towpreg tape is formed from a plurality of reinforcing filaments fusion coated with matrix forming material, the reinforcing filaments being substantially wet-out by the matrix forming material, and the towpreg tape having multiple plies with an average thickness less than about 100 microns. The method of production for the improved flexible towpreg tape includes the steps of coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion of the matrix forming material to the reinforcing filaments; forming a towpreg by heating the matrix forming material contacting the reinforcing filaments until the matrix forming material liquefies and coats the reinforcing filaments; and forming the towpreg tape under pressure and elevated temperature in a means for creating a known tape geometry.

US Patent:

51982811, Mar 30, 1993

Filed:

Mar 9, 1992

Appl. No.:

7/848093

Inventors:

John D. Muzzy - Atlanta GA
Jonathan S. Colton - Atlanta GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

B32B 306

US Classification:

428102

Abstract:

A non-woven towpreg fabric and a method of production therefor. The non-woven towpreg fabric is fabricated from a plurality of flexible, multiply towpregs, comprising towpreg plies which comprise reinforcing filaments substantially wetout by a matrix forming material, which then are bonded together to form the fabric. The method of production for the non-woven towpreg fabric involves spreading the reinforcing filaments, coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion, forming the towpreg plies by heating the matrix forming material until the matrix forming material liquefies and coats the reinforcing filaments, cooling the towpreg plies in a manner while said towpregs remain substantially unconsolidated until the matrix forming material solidifies, overlapping a plurality of the towpreg plies, and bonding the towpreg plies together. Multidimensional fabrics, preforms and composite articles also can be formed by this invention.