Michael D Coates

US Patent:

8053549, Nov 8, 2011

Filed:

Jul 15, 2008

Appl. No.:

12/669389

Inventors:

Andrew J. Melville - Cheshire, GB
Leonard W. Harvey - Downingtown PA, US
Joel Ginies - Cheshire, GB
Michael Coates - Elverson PA, US
Julie K. Wright - Cheshire, GB

Assignee:

Whitford Plastics Limited - Runcorn, Cheshire

International Classification:

C08G 6/00
C08J 3/00

US Classification:

528481, 4273855, 524501, 525199

Abstract:

A method for the preparation of a modified fluoropolymer powdered material is disclosed. A suspension of solid fluoropolymer particles together with PTFE particles in an aqueous carrier, is frozen and the frozen carrier is then removed by sublimation at sub-atmospheric pressure to produce a dry powder of modified fluoropolymer particles.

US Patent:

20090317553, Dec 24, 2009

Filed:

May 19, 2009

Appl. No.:

12/468580

Inventors:

Leonard W. Harvey - Downingtown PA, US
Michael Coates - Elverson PA, US
Julie K. Wright - Widnes, GB

Assignee:

WHITFORD CORPORATION - Elverson PA

International Classification:

B05D 3/02
C08J 3/02
C08L 27/12

US Classification:

4273855, 524501, 525199

Abstract:

Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (μm), with the LPTFE having a first melt temperature (T) of 332 C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (μm). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

US Patent:

20120076944, Mar 29, 2012

Filed:

Nov 15, 2011

Appl. No.:

13/296752

Inventors:

Leonard W. Harvey - Downingtown PA, US
Michael Coates - Elverson PA, US
Julie K. Wright - Widnes, GB

Assignee:

WHITFORD CORPORATION - Elverson PA

International Classification:

C09D 127/18
B05D 7/24
B05D 3/02
C08L 27/18

US Classification:

4273855, 428402, 524501, 525200

Abstract:

Blended fluoropolymer compositions are provided, in which a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) in the form of an aqueous dispersion having a mean particle size of less than 1.0 microns (μm) and a first melt temperature (T) of 332 C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion having a mean particle size of less than 1.0 microns (μm). When the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers.

US Patent:

20200317958, Oct 8, 2020

Filed:

Aug 3, 2018

Appl. No.:

16/759242

Inventors:

- Cleveland OH, US
Gregory N. Alexander - Coatesville PA, US
Michael Coates - Elverson PA, US
Robert W. Colmery - Elverson PA, US
Terry Carl Erb - Bechtelville PA, US
Paul Francis Reginald Ewings - Ripley, GB
Leonard Jonathan Kolle - Pottstown PA, US
Thomas F. Millea - Morristown NJ, US

Assignee:

PPG Industries Ohio, Inc. - Cleveland OH

International Classification:

C09J 7/10
C08G 59/66
C09J 163/10
C09J 9/00

Abstract:

The present invention relates to a kneadable adhesive sealant composition comprising a first outer portion of a first material comprising an uncured reactive polymer or resin composition and a second inner portion of a second material comprising a curing agent capable of curing the uncured reactive polymer or resin composition, wherein the first portion substantially surrounds the second portion and a process for making the same.