David W Garrison

US Patent:

20080014423, Jan 17, 2008

Filed:

Jun 10, 2005

Appl. No.:

11/628709

Inventors:

David Garrison - Yardley PA, US
Peter Sirusas - USA-Chadds Ford PA, US
Valeri Kapeliouchko - Alessandria, IT
Fabio Polastri - Monza, IT
Enrico Marchese - Asti, IT
Brian Stern - Duluth GA, US

Assignee:

Solvay (Societe Anonymw - Brussels

International Classification:

C08L 27/18
B05D 3/02
B32B 25/00
C08J 5/00

US Classification:

428220000, 264331140, 427379000, 524546000, 525185000

Abstract:

Tape comprising a polymer composition, said polymer composition comprising at least one fluoropolymer and a modifier consisting of at least one aromatic polyimide chosen from aromatic polyamide-imides and aromatic polyesterimides, and, optionally in addition, at least one aromatic polyimide chosen from aromatic polyimides other than aromatic polyamide-imides and aromatic polyesterimides, said modifier being comprised in the polymer composition in an amount of up to 75 wt. % (based on the total weight of the polymer composition). Article comprising said tape. Processes especially well-adapted for manufacturing said tape. Use of the above modifier as an additive of a polymer composition comprising a fluoropolymer, to increase the abrasion resistance either of a tape comprising said polymer composition, or of an article comprising an outermost layer which covers at least partially the article, said outer most layer comprising a tape comprising said polymer composition.

US Patent:

49575996, Sep 18, 1990

Filed:

Dec 8, 1989

Appl. No.:

7/450908

Inventors:

Yu-Chia T. Chou - Wilmington DE
David F. Garrison - Mullica Hill NJ
William I. Lewis - Burlington, CA

Assignee:

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

International Classification:

D21C 302

US Classification:

162 78

Abstract:

An improved process for delignifying and bleaching nonwoody, lignocellulosic material into products digestible by ruminants and ingestible by humans. The process comprises treating the substrate in an alkaline solution for a period of time, separating the wetted substrate from the slurry and then treating the wetted substrate with an alkaline peroxide solution at an initial pH of 8. 5 to 11. 0 for a period of time, and separating, washing and drying the product.

US Patent:

56973900, Dec 16, 1997

Filed:

Feb 28, 1996

Appl. No.:

8/608304

Inventors:

David S. Garrison - Yardley PA
David A. Delgado - Levittown PA
Patricia J. Deeney - Lawrenceville NJ
David E. Newman - Huntington Station NY

Assignee:

Coltec Industries Inc - Charlotte NC

International Classification:

A61C 1504
B28B 1116
D01F 612

US Classification:

132321

Abstract:

A process is provided for producing an additive-containing PTFE or other fluorocarbon polymer resin which achieves substantially complete and thorough homogeneous distribution of the selected additive within the polymer matrix. The selected additive and polymer are blended and then subjected to an air milling in an air impact pulverizer to achieve particle to particle impact and the homogeneous distribution of the additive in and among the polymer particles. The milled polymer-additive composite is paste extruded and further processed to form additive-containing PTFE products such as dental floss, insulating or conductive materials, laser markable materials, abrasion resistance materials and the like.

US Patent:

48592820, Aug 22, 1989

Filed:

Apr 15, 1988

Appl. No.:

7/181771

Inventors:

Yu-Chia T. Chou - Wilmington DE
David F. Garrison - Mullica Hill NJ
William I. Lewis - Burlington, CA

Assignee:

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

International Classification:

D21C 916

US Classification:

162 78

Abstract:

An improved process of purifying the product from an alkaline peroxide treatment process for delignifying and bleaching nonwoody lignocellulosic agricultural residues comprising, optionally washing with water, then lowering and maintaining the pH of the substrate at less than about pH 3. 0, then washing sufficiently to remove residual chemicals, separating the product from the wash liquid and, optionally, drying the product.