Eugene F Dougherty

US Patent:

7030179, Apr 18, 2006

Filed:

Apr 13, 2004

Appl. No.:

10/822937

Inventors:

John Robert Patterson - Philadelphia PA, US
Scott Warren Reading - Burlington NJ, US
Eugene Patrick Dougherty - Langhorne PA, US

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08L 13/02
C08L 27/04

US Classification:

524 13, 524 16, 524567, 524569

Abstract:

Compositions and processes for preparing extrudable powder blends containing at least one vinyl chloride resin and a cellulosic material are provided. More specifically, compositions and processes for preparing extrudable free-flowing powder blends containing PVC and wood flour (WF) are also provided for preparing foamed or nonfoamed extrudates. The processes provided herein incorporate components which may contain up to a total of 25 weight percent water. Processes for preparing foamed extrudates are also provided wherein a cooling fluid is used to increase the expansion ratio of the foam. Finally provided are composites having an extrudable thermoplastic substrate and at least one capstock layer disposed thereon containing a PVC/WF composition.

US Patent:

7238742, Jul 3, 2007

Filed:

May 15, 2003

Appl. No.:

10/438492

Inventors:

Richard Henry Weese - Philadelphia PA, US
Eugene Patrick Dougherty - Langhorne PA, US
David John McDonald - Fairless Hills PA, US
Jean Marie Brady - Maple Glen PA, US

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F 290/04

US Classification:

524504, 524502

Abstract:

Aqueous-form additive systems, and methods of blending the same with a matrix resin, are disclosed whereby acrylic-based impact modifier compositions, butadiene-based impact modifier compositions and acrylic-based processing aids are used in aqueous form without the need for isolation to the traditional powder-form. The aqueous additive systems of the present invention provide a means for the design of novel additive compositions. The aqueous additive systems of the present invention also provide a great degree of flexibility in preparation of matrix resin blends and formulations. Additionally, the aqueous additive systems of the present invention allow for the reduced cost of manufacturing additives and reduced cost in blending matrix resin formulations.

US Patent:

6784230, Aug 31, 2004

Filed:

Sep 14, 2000

Appl. No.:

09/661816

Inventors:

John Robert Patterson - Philadelphia PA
Scott Warren Reading - Burlington NJ
Eugene Patrick Dougherty - Langhorne PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08L 1302

US Classification:

524 13, 524 16, 524567, 524569

Abstract:

Compositions and processes for preparing extrudable powder blends containing at least one vinyl chloride resin and a cellulosic material are provided. More specifically, compositions and processes for preparing extrudable free-flowing powder blends containing PVC and wood flour (WF) are also provided for preparing foamed or nonfoamed extrudates. The processes provided herein incorporate components which may contain up to a total of 25 weight percent water. Processes for preparing foamed extrudates are also provided wherein a cooling fluid is used to increase the expansion ratio of the foam. Finally provided are composites having an extrudable thermoplastic substrate and at least one capstock layer disposed thereon containing a PVC/WF composition.