John M Wefer

US Patent:

6573339, Jun 3, 2003

Filed:

Jan 12, 1999

Appl. No.:

09/228297

Inventors:

Joseph F. Stieber - Prospect CT
Robert J. Cornell - Prospect CT
John M. Wefer - Newtown CT
David Hajdasz - Meriden CT
Jeffrey Otis - Middletown CT

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C08C 1922

US Classification:

525386, 525374

Abstract:

A process is disclosed for preparing an N-hydrocarbyl-bis-benzothiazolesulfenamide comprising reacting an N-hydrocarbyl-2-benzothiazolesulfenamide with a cyclic organic acid anhydride in situ in a polymeric matrix at elevated temperature.

US Patent:

7217765, May 15, 2007

Filed:

Dec 17, 2003

Appl. No.:

10/739598

Inventors:

Sung Chul Hong - Hamden CT, US
Qinggao Ma - Naugatuck CT, US
Paul Edwin Stott - Southbury CT, US
John M. Wefer - Newtown CT, US
Leigh Cameron Allen - Winchester CT, US

Assignee:

Crompton Corporation - Middlebury CT

International Classification:

C08F 8/30

US Classification:

525181, 525184, 525192, 525241

Abstract:

A composite composition is disclosed that comprises the reaction product of a mixture of a styrenic polymer, as defined herein, a polar component having nucleophilic functional groups, and from 0. 5 to 10 wt % of a compatibilizer having the formula:R(I)-(styrene)-[(styrene)(X)]—I(R)wherein:.

US Patent:

7569630, Aug 4, 2009

Filed:

Jun 14, 2006

Appl. No.:

11/453591

Inventors:

Qinggao Ma - Naugatuck CT, US
William A. Wortman - Harwinton CT, US
Abuzar Syed - Torrington CT, US
Paul E. Stott - Oxford CT, US
John M. Wefer - Newtown CT, US
David J. Sikora - Middlebury CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C08G 63/685
C07C 229/00

US Classification:

524221, 524217, 524218, 524219, 524223, 524224, 524228, 524236, 524238, 524239, 524240, 524242, 524284, 562442

Abstract:

Disclosed herein are aromatic amide derivatives of the formulae:.

US Patent:

7572849, Aug 11, 2009

Filed:

Nov 18, 2005

Appl. No.:

11/283314

Inventors:

Qinggao Ma - Naugatuck CT, US
William A. Wortman - Harwinton CT, US
Huiling Ding - Cheshire CT, US
Roy Russell - Waterbury CT, US
Leigh C. Allen - Winchester CT, US
Paul E. Stott - Oxford CT, US
John Wefer - Newtown CT, US
David J. Sikora - Middlebury CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C08K 5/21
C07C 273/02

US Classification:

524212, 564 50

Abstract:

Disclosed herein are urea phenyl derivatives of the formula:.

US Patent:

7585909, Sep 8, 2009

Filed:

Nov 16, 2006

Appl. No.:

11/601247

Inventors:

Qinggao Ma - Naugatuck CT, US
William A. Wortman - Harwinton CT, US
Abuzar Syed - Torrington CT, US
Paul E. Stott - Oxford CT, US
John M. Wefer - Newtown CT, US
David J. Sikora - Middlebury CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

B01F 17/00
C08F 2/32
C08K 5/00
B29C 33/60
B32B 7/121

US Classification:

524212, 524801, 524211, 524229, 524286

Abstract:

Disclosed herein are p-urea phenyl derivatives of the formula:.

US Patent:

7825180, Nov 2, 2010

Filed:

Oct 2, 2006

Appl. No.:

11/542045

Inventors:

Abuzar Syed - Torrington CT, US
John M. Wefer - Newtown CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C08K 3/30

US Classification:

524425, 524423, 524493, 524431, 524445, 524449, 524494

Abstract:

A process for lowering the stiffness of filled thermoplastic polymer formulations is disclosed wherein the process comprises including in said formulation a low modulus coupling agent wherein said coupling agent comprises a blend of at least two functionalized polyolefins. Also disclosed is a process for producing soft coupling agents comprising blending at least two functionalized polyolefins in pre-determined ratios, whereby chemical and physical properties of the coupling agents can be controlled.

US Patent:

20070208110, Sep 6, 2007

Filed:

Mar 1, 2007

Appl. No.:

11/713134

Inventors:

William D. Sigworth - Naugatuck CT, US
John M. Wefer - Newtown CT, US

International Classification:

B29C 47/00
C08K 5/00

US Classification:

524 13, 524284

Abstract:

The invention is a coupling agent, which is made from a polyolefin composition and is for wetting a cellulosic fiber. The coupling agent desirably includes a polyolefin resin having a melt flow index at 190 C. and 2.16 kg of about 0.5 to 100 (g/10 min). The polyolefin resin is combined with 1.6 to 4.0 weight percent maleic anhydride, and the composition has less than 1,500 ppm of free maleic anhydride. The coupling agent has a yellowness index of 20 to 70. A cellulosic composite can be made from the coupling agent by combining the coupling agent with cellulosic fiber and at least one thermoplastic polymer.

US Patent:

20070259995, Nov 8, 2007

Filed:

May 5, 2006

Appl. No.:

11/418633

Inventors:

Peter Frenkel - Danbury CT, US
Qinggao Ma - Naugatuck CT, US
Paul Stott - Oxford CT, US
John Wefer - Newtown CT, US
Edward Krainer - New Fairfield CT, US

International Classification:

C08L 1/00

US Classification:

524035000

Abstract:

A method, composition, and article of manufacture are disclosed for improving the physical properties of cellulose fiber-containing material/PVC composites by adding at least one compatibilizer to the composites. The compatibilizer is a maleated styrene/acrylonitrile copolymer.