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Kalyan Sehanobish Phones & Addresses

  • Friendswood, TX

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Us Patents

Broad Mwd, Compositionally Uniform Ethylene Interpolymer Compositions, Process For Making The Same And Article Made Therefrom

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US Patent:
6451916, Sep 17, 2002
Filed:
Aug 31, 2001
Appl. No.:
09/943853
Inventors:
Kenneth W. Anderson - Lake Jackson TX
Pak-Wing S. Chum - Lake Jackson TX
David A. Eversdyk - Angleton TX
Lonnie G. Hazlitt - Lake Jackson TX
Pradeep Jain - Lake Jackson TX
Kalyan Sehanobish - Friendswood TX
Li-Min Tau - Lake Jackson TX
Assignee:
The Dow Chemical Company Midland - MI
International Classification:
C08F 800
US Classification:
525191, 525232, 525240, 428515, 428516, 428523
Abstract:
The present invention pertains to a continuous process and polymerization system characterized by separate injection of catalyst and make-up feed, an ethylene interpolymer composition characterized as having broad molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a composition and a fabricated article made from such composition. The novel composition is characterized as having a melt flow ratio, I /I , from 8 to 30, a M /M of greater than 4 as determined by gel permeation chromatography, a melt index, I , from 0. 01 to 1000 grams/10 minutes, preferably greater that 0. 1 to 10 grams/10 minutes, and a density less than 0. 945 g/cm. The novel composition exhibits good processibility and improved toughness properties, especially excellent film tear and impact resistance, and is particularly well-suited for use in applications such as high performance trash can liners and heavy duty shipping bags.

Cast Stretch Film Of Interpolymer Compositions

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US Patent:
6812289, Nov 2, 2004
Filed:
Jul 22, 2002
Appl. No.:
10/200814
Inventors:
Jozef J. I. Van Dun - Bellaire TX
Jacquelyn A. deGroot - Lake Jackson TX
Pradeep Jain - Lake Jackson TX
Kalyan Sehanobish - Lake Jackson TX
Pak-Wing S. Chum - Lake Jackson TX
Assignee:
Dow Global Technologies Inc. - Midland MI
International Classification:
C08L 2300
US Classification:
525240, 526348, 5263481, 5263482, 5263486, 526943
Abstract:
This invention relates to cast films prepared from interpolymer compositions comprising; (A) a substantially linear ethylene/-olefin interpolymer present in the composition in an amount of from about 10 to about 100% by weight based on the combined weight of Components A and B; and (B) a heterogeneous interpolymer present in the composition in an amount of from about 0 to about 90% by weight based on the combined weight of Components A and B; and wherein said interpolymer composition has an I /I value of about 10. 0 and is characterized as having a viscosity at 100 rad/s and a relaxation time ( ) which satisfies either of the following relationships; or The interpolymer compositions are useful in cast stretch film manufacture with the resulting cast films having an excellent balance of strength and processability.

Bimodal Polyethylene Pipe Composition And Article Made Therefrom

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US Patent:
7129296, Oct 31, 2006
Filed:
Apr 2, 2004
Appl. No.:
10/817030
Inventors:
Jozef J. Van Dun - Missouri City TX, US
Patrick J. Schouterden - Wachtebeke, BE
Kalyan Sehanobish - Lake Jackson TX, US
Peter F. M. van den Berghen - Graauw, NL
Noorallah Jivraj - Lake Jackson TX, US
Ruddy Nicasy - Westerlo, BE
Johan Vanvoorden - Diepenbeek, BE
Ravi S. Dixit - Lake Jackson TX, US
Frederik E. Gemoets - Wommelgem, BE
Assignee:
Dow Global Technologies Inc. - Midland MI
International Classification:
C08F 8/00
C08L 23/00
C08L 23/04
US Classification:
525191, 525240
Abstract:
The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (LMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD, of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Films With Superior Impact Resistance And Improved Catastrophic Failure Resistance Under High Strain Rate

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US Patent:
7754341, Jul 13, 2010
Filed:
Nov 29, 2004
Appl. No.:
10/579429
Inventors:
Wenbin Liang - Sugar Land TX, US
David B. Ramsey - Angleton TX, US
Staci A. DeKunder - Pearland TX, US
Kalyan Sehanobish - Rochester Hills MI, US
Jesus Nieto - Cambrils, ES
John L. Presa - Brazoria TX, US
Shaun E. Pirtle - Brazoria TX, US
Assignee:
Dow Global Technologies Inc. - Midland MI
International Classification:
B32B 27/32
B32B 27/08
US Classification:
428515, 428220, 428332, 428335, 428336
Abstract:
Stretch films which exhibit good puncture and impact resistance while also exhibiting resistance to defect propagation are desired. The films of the present invention have an ultimate stretch of at least 200 percent, a dart impact strength of at least about 700 gms/mil and a catastrophic failure stretch of at least 95 percent of the elongation to break value (CF of 5 or less). The films preferably comprise at least 3 layers and preferably comprise at least 50 percent by weight of polyethylene polymers.

Method Of Making A Polypropylene Fabric Having High Strain Rate Elongation And Method Of Using The Same

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US Patent:
20040038022, Feb 26, 2004
Filed:
Sep 27, 2002
Appl. No.:
10/240291
Inventors:
Rexford Maugans - Lake Jackson TX, US
Kalyan Sehanobish - Friendswood TX, US
Michael Rowland - Lake Jackson TX, US
Ray Herring - Lake Jackson TX, US
John Kaarto - Missouri City, CA
Kenneth Springs - Clute TX, US
Thoi Ho - Lake Jackson TX, US
International Classification:
B32B027/00
B32B001/00
US Classification:
428/328000, 428/394000, 428/409000, 156/229000, 156/062600
Abstract:
This invention relates to a method of making a film-fabric composite (includinng a film-fabric laminate) wherein the fabric is characterized as having improved tensile elongation (without rupture). In particular, the invention pertains to a method of making a film-fabric laminate having structual elastic-like behavior wherein the fabric is a nonwoven thermally bonded fabric characterized as having improved high strain rate tensile elongation and comprises a plurality of fibers comprised of at least one polypropylene polymer and at least one ethylene polymer, wherein the method comprises stretching the laminate at a high strain rate. The improved farbic is characterized by higher high strain rate tensile properties and a broader bond window which is also shifted to substantially lower temperatures with regard to maximum tensile properties. The improved fabric enables higher stretching levels or speeds on stretching apparati often employed to impart elasticity or elastic-like behavior to inelastic ploymeric materials. Polypropylene copolymers as well as polypropylene homopolymers may be used in the invention which is sueful for durable and disposable articles such as diapers, bandages, pantiliners, continence pads, and sanitary napkins.

Disposable Articles Having A Continuous Thermoplastic Coating Comprising A Metallocene Polyolefin

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US Patent:
61208876, Sep 19, 2000
Filed:
Aug 29, 1996
Appl. No.:
8/705380
Inventors:
Harald Werenicz - Reppenstedt, DE
Thomas Wittkopf - Adendorf, DE
Gerhard Voss - Luneburg, DE
Peter Remmers - Hamburg, DE
Mark G. Katsaros - Mahtomedi MN
Robert G. Polance - Vadnais Heights MN
Mark S. Kroll - Arden Hills MN
Wendy Hoenig - Lake Jackson TX
Selim Yalvac - Lake Jackson TX
Kalyan Sehanobish - Friendswood TX
Teresa Karjala - Lake Jackson TX
Deepak Parikh - Lake Jackson TX
David C. Kelley - Angleton TX
Assignee:
H. B. Fuller Licensing & Financing, Inc. - St. Paul MN
International Classification:
B32B 2732
A61F 1315
US Classification:
428219
Abstract:
This invention relates to a non-contact coating method for producing a continuous coating and articles constructed therefrom. This invention further relates to a method for producing a textile material with a moisture-impermeable barrier layer and to a method for producing a moisture-absorbing article of hygiene which has such a barrier layer. This invention particularly relates to a textile material and hygienic disposable articles comprising a body fluid impermeable barrier layer which can be produced from a non-contact coating method. Preferably, the thermoplastic composition used for producing the barrier layer exhibits certain rheological characteristics and comprises at least one homogeneous linear or substantially linear interpolymer of ethylene with at least one C. sub. 3 -C. sub. 20 alpha-olefin, further characterized by each said interpolymer having a polydispersity less than about 2. 5.

Impact-Modified Thermoplastic Polyolefins And Articles Fabricated Therefrom

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US Patent:
61404209, Oct 31, 2000
Filed:
Dec 1, 1998
Appl. No.:
9/204008
Inventors:
Kalyan Sehanobish - Friendswood TX
Larry A. Meiske - Lake Jackson TX
Shaofu Wu - Missouri City TX
Pak-Wing Steve Chum - Lake Jackson TX
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
C08F 830
US Classification:
525125
Abstract:
Melt processible thermoplastic compositions and method for making them are described, these compositions comprising a thermoplastic polymer resin matrix selected from the group consisting of thermoplastic polyurethanes, polyvinyl chlorides, styrenics, engineering thermoplastics, and polyolefins, at least about 25 percent (by weight based on the total composition) of an elastomeric impact modifier dispersed as discrete particles in the thermoplastic matrix (a); and at least about 10 percent (by weight based on the total composition) of at least one homogeneous linear or substantially linear ethylene polymer dispersed as discrete particles in at least the impact modifier (b), the ethylene polymer having a molecular weight distribution less than 3. 5 and a density of at least 0. 04 g/cm. sup. 3 higher than the density of the impact modifier component (b), wherein the elastic modulus of the thermoplastic component (a) is at least 200 times greater than the elastic modulus of the impact modifier component (b).

Polymer Compositions Having Improved Elongation

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US Patent:
63003988, Oct 9, 2001
Filed:
Apr 14, 1998
Appl. No.:
9/059753
Inventors:
Gary Lee Jialanella - Stow OH
Thomas J. McKeand - Freeport TX
Kalyan Sehanobish - Friendswood TX
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
C08L 2308
US Classification:
524275
Abstract:
The subject invention is directed to polymer compositions which comprise a homogeneous ethylene/. alpha. -olefin interpolymer, a wax and a nucleating agent, wherein the nucleating agent is provided in an effective amount such that the percent elongation at break of the polymer composition is at least about fifty percent greater than the percent elongation at break of a comparative composition which lacks the nucleating agent. The polymer compositions of the invention will find utility in applications r equiring high elongation at break, while maintaining a high onset of crystallization temperature, such as in the high-speed coating of fabrics, carpet backing, floor tile and sheeting, and adhesives.
Kalyan Sehanobish from Friendswood, TX Get Report