Robert A Pyles

US Patent:

6367930, Apr 9, 2002

Filed:

Dec 30, 1999

Appl. No.:

09/476251

Inventors:

Pia I. Santelices - Portland OR
James N. Rieck - Wheeling WV
Jack C. Chan - Coraopolis PA
Sivaram Krishnan - Pittsburgh PA
William G. Curtis - Sewickley PA
Robert Allen Pyles - Bethel Park PA

Assignee:

Bayer Corporation - Pittsburgh PA

International Classification:

G02C 710

US Classification:

351177, 351163, 351166

Abstract:

A process for making a photochromic optical lens is disclosed. In a first embodiment of the process a multi-plied laminate, containing a ply of photochromic thermoplastic polyurethane (herein âTPUâ) and a ply containing thermoplastic polycarbonate, is first placed in the cavity of a suitable mold. The ply that contains polycarbonate resin is placed facing the cavity. Thermoplastic polycarbonate resin is then injected into the cavity. In a second embodiment, referred to as an over-mold method, polycarbonate is first injection molded into a molding cavity to form a substrate. Photochromic TPU is, in a subsequent step, injected into the cavity to form a superstrate overlay. In both embodiments, the articles thus molded are suitable for the preparation of optical lenses.

US Patent:

6733543, May 11, 2004

Filed:

Mar 26, 2002

Appl. No.:

10/106788

Inventors:

Robert A. Pyles - Bethel Park PA
Rick L. Archey - Pleasant Hills PA

Assignee:

Bayer Polymers LLC - Pittsburgh PA

International Classification:

D06P 500

US Classification:

8506, 8509, 8510, 8512, 8514, 8515, 8516, 8609, 8611

Abstract:

A process of dyeing a molded article is disclosed. The process entails immersing at least a portion of the article in a dyeing bath, retaining the portion in the bath for a period of time sufficient to allow an amount of dye to diffuse into the article, and removing said article from the bath. The molded article comprises a polymeric resin such as (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)acrylate, allyldiglycol carbonate and styrene copolymers. The dyeing bath contains in addition to dye, water, a plasticizing agent and a leveling agent.

US Patent:

6749646, Jun 15, 2004

Filed:

Nov 7, 2001

Appl. No.:

10/040178

Inventors:

Robert A. Pyles - Bethel Park PA
Rick L. Archey - Pleasant Hills PA

Assignee:

Bayer Polymers LLC - Pittsburgh PA

International Classification:

D06P 700

US Classification:

8506, 8509, 8510, 8512, 8514, 8515, 8516

Abstract:

A process for tinting of articles molded from a polymeric resin is disclosed. Preferably, the article is molded from polycarbonate and the process entails immersing the molded article in a dye bath that contains water, dye, a carrier and an optional surfactant. The carrier is a compound conforming to wherein R and R independently denote H or C alkyl, benzyl, benzoyl or phenyl radical which may be substituted in the aromatic ring by alkyl and or halogen, preferably R =butyl, R =H, n is 2 or 3 and m is 2 to 35. The method is especially useful in the manufacture of tinted lenses.

US Patent:

6929666, Aug 16, 2005

Filed:

Mar 2, 2004

Appl. No.:

10/791114

Inventors:

Robert A. Pyles - Bethel Park PA, US
Rick L. Archey - Pleasant Hills PA, US

Assignee:

Bayer Materialscience LLC - Pittsburgh PA

International Classification:

C09B067/40

US Classification:

8576, 8594, 8609, 8611

Abstract:

A composition of matter (e. g. , a molded article) is described. More particularly, the composition of matter includes: (a) a resinous component selected from at least one member of the group consisting of (co)polyester, (co)polycarbonates, acrylontrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)acrylate and styrene copolymers; (b) at least one dye; (c) a carrier represented by the following formula,R[—O—(CH)]ORwherein Ris butyl, Ris H, n is 2 or 3, and m is 2-35; and (d) optionally emulsifier. Also described is a dye bath that includes: (a) water; (b) at least one dye; (c) a carrier represented by the above formula; and (d) optionally an emulsifier.

US Patent:

6949127, Sep 27, 2005

Filed:

Mar 9, 2004

Appl. No.:

10/796523

Inventors:

Robert A. Pyles - Bethel Park PA, US
Rick L. Archey - Pleasant Hills PA, US

Assignee:

Bayer MaterialScience LLC - Pittsburgh PA

International Classification:

D06P001/60
D06P001/64

US Classification:

8506, 8509, 8510, 8512, 8514, 8515, 8516, 8609, 8611

Abstract:

A process of dyeing a molded article is disclosed. The process entails immersing at least a portion of the article in a dyeing bath, retaining the portion in the bath for a period of time sufficient to allow an amount of dye to diffuse into the article, and removing said article from the bath. The molded article comprises a polymeric resin such as (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)-acrylate, allyldiglycol carbonate and styrene copolymers. The dyeing bath contains in addition to dye, water, a plasticizing agent and a leveling agent.

US Patent:

6994735, Feb 7, 2006

Filed:

May 8, 2003

Appl. No.:

10/434242

Inventors:

Robert A. Pyles - Bethel Park PA, US
David M. Derikart - Tarentum PA, US
Rick L. Archey - Pleasant Hills PA, US
Michael Nikolakopoulos - Pittsburgh PA, US

Assignee:

Bayer Materialscience LLC - Pittsburgh PA

International Classification:

D06P 1/613

US Classification:

8609, 8506, 8509, 8510, 8512, 8513, 8514, 8515

Abstract:

A process for tinting a molded article is disclosed. The process entails applying by spraying or by flow coating a hot, dye-solution onto at least a portion of the surface of a molded article to obtain a tinted article and washing the tinted article. In addition to the dissolved dye, the dye solution that is substantially free of particulate matter contains an aqueous solution of a carrier and an optional emulsifier. The article is one molded of a thermoplastic molding composition. In an embodiment of the invention, the dye solution is prepared by filtering a hot aqueous solution through a bag filter that contains a dye to obtain a hot, dye-solution. In a further embodiment, activated carbon is used to purify the dye solution to obtain a dye-free aqueous solution.

US Patent:

7094263, Aug 22, 2006

Filed:

Mar 14, 2005

Appl. No.:

11/080799

Inventors:

Robert A. Pyles - Bethel Park PA, US
Rick L. Archey - Pleasant Hills PA, US

Assignee:

Bayer Materialscience LLC - Pittsburgh PA

International Classification:

C09B 29/00
C09B 67/38

US Classification:

8552, 8576, 8609, 8611, 8618, 8662, 524190, 524257, 524258, 524317, 524376, 524378, 524543

Abstract:

A composition of matter (e. g. , a molded article) is described. More particularly, the composition of matter includes: (a) a resinous component selected from at least one member of the group consisting of (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)acrylate and styrene copolymers; (b) at least one water-insoluble dye; (c) a carrier represented by the following formula,R[—O—(CH)]ORwherein Ris butyl, Ris H, n is 2 or 3, and m is 2–35; (d) an emulsifier that is poly(oxy-1,2-ethanediyl), alpha-phenyl-omega-hydroxy, styrenated; and (e) a particulate or plate-like material, such as metal flakes.

US Patent:

7175675, Feb 13, 2007

Filed:

Dec 11, 2003

Appl. No.:

10/733111

Inventors:

Robert A. Pyles - Bethel Park PA, US
Rick L. Archey - Pleasant Hills PA, US
David M. Derikart - Tarentum PA, US

Assignee:

Bayer MaterialScience LLC - Pittsburgh PA

International Classification:

D06P 5/00

US Classification:

8506, 8509, 8510, 8514, 8515, 8516, 8611

Abstract:

In the method of the present invention a plastic article (e. g. , a molded article of thermoplastic polycarbonate) is immersed at least partially in a dye bath which includes one or more dyes, water, at least one carrier, and at least one diol. The dye bath contains: (i) at least one dye (e. g. , a static and/or photochromic dye); (ii) water; (iii) at least one carrier represented by the following general formula I,R—O—(CH)—OHIwherein R is a radical selected from linear or branched C–Calkyl, benzyl, benzoyl and phenyl, and n is 2 or 3; and (iv) a diol selected from at least one of linear or branched C–Caliphatic diols, poly(C–Calkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols. In an embodiment of the present invention, the carrier is ethyleneglycol butyl ether, and the diol is diethylene glycol. The present invention also relates to a method of separating the dye from the water, carrier and diol components of the dye bath, by contacting the dye bath with particulate activated carbon.