Srivatsan S Iyer from 213 Oakmont Dr, Blue Bell, PA 19422, age 57, Phone: 610 275-7538

Heterogeneous Polymer Blends And Molded Articles Therefrom
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US Patent:

7476710, Jan 13, 2009
Filed:

Dec 9, 2005
Appl. No.:

11/298145
Inventors:

Aspy K. Mehta - Humble TX, US
Sudhin Datta - Houston TX, US
Wen Li - Houston TX, US
Srivatsan S. Iyer - Pearland TX, US
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

C08L 23/00
C08L 23/04
US Classification:

525191, 525240
Abstract:

This invention relates to a molded article comprising a heterogeneous blend that includes:.

Plasticized Polyolefin Compositions
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US Patent:

7629416, Dec 8, 2009
Filed:

Apr 29, 2005
Appl. No.:

11/119072
Inventors:

Wen Li - Houston TX, US
Mun Fu Tse - Seabrook TX, US
Srivatsan Srinivas Iyer - Pearland TX, US
Bryan Robert Chapman - Annandale NJ, US
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

C08L 23/00
C08L 23/04
C08K 5/00
US Classification:

525191, 525240, 524515
Abstract:

The present invention relates to a composition comprising 1) from 1 to 98 weight % of a first propylene polymer having a melting point of 100 C. or more, 2) from 5 to 98 weight % of a second propylene polymer having a heat of fusion of 70 J/g or less and a tacticity index of 75% or more, 3) from 0. 5 to 75 weight % of a non-functionalized plasticizer (“NFP”) having a viscosity index of 120 or more, based upon the weight of the first polymer, second polymer, and the NFP, and articles therefrom.

Films From Polymer Blends
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US Patent:

7683129, Mar 23, 2010
Filed:

Dec 9, 2005
Appl. No.:

11/299104
Inventors:

Aspy K. Mehta - Humble TX, US
Sudhin Datta - Houston TX, US
Wen Li - Houston TX, US
Srivatsan Srinivas Iyer - Pearland TX, US
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

C08L 23/00
C08L 23/04
D04H 1/00
D04H 3/00
D04H 5/00
B32B 25/02
US Classification:

525191, 525240, 4282921, 428441, 428461, 428511, 428516
Abstract:

This invention relates to a film comprising a heterogeneous blend of: 1) from 60 to 99 wt % of one or more semi-crystalline polymers; and 2) from 1 to 40 wt % of one or more semi-amorphous polymers; where the blend has: an MFR of 0. 5 to 100 dg/min, a haze of 20% or less, and a permanent set of greater than 65%; and where the film is 2. 5 to 635 microns thick and has: a haze of 10% or less, a 1 Secant tensile modulus of 100,000 to 30,000 psi, an Elmendorf tear in the machine direction and transverse direction of 45 g/mil or more, a total energy impact of 3 J or more; and a 45 degree gloss of 82 or more.

Polymeric Compositions Including Their Uses And Methods Of Production
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US Patent:

7781530, Aug 24, 2010
Filed:

Jan 13, 2006
Appl. No.:

11/332802
Inventors:

Hsien-Chang Wang - Bellaire TX, US
Wai Keung Wong - Wezembeek-Oppem, BE
Srivatsan Srinivas Iyer - Pearland TX, US
Pascal Van Hoeck - Kapelle-op-den-Bos, BE
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

B65D 39/00
B32B 27/08
B29D 22/00
C08L 9/00
C08L 47/00
C08L 23/00
US Classification:

525240, 428 357, 428 368, 525191, 525232, 525235, 525241, 525211
Abstract:

Polymeric compositions and methods of making and using such compositions are provided. The compositions incorporate a first component that is an isobutylene-based polymer and a second component having propylene-derived units and polyene derived units. The polymeric compositions have desirable processability characteristics, particularly for injection molding applications.

Polymer Blends And Pellets And Methods Of Producing Same
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US Patent:

8013069, Sep 6, 2011
Filed:

Jan 13, 2006
Appl. No.:

11/332024
Inventors:

Bruce Allan Harrington - Houston TX, US
Michael Glenn Williams - Humble TX, US
Sudhin Datta - Houston TX, US
Srivatsan Srinivas Iyer - Pearland TX, US
Assignee:

Exxonmobil Chemical Patents Inc. - Houston TX
International Classification:

C08L 23/12
US Classification:

525191, 525240
Abstract:

Blends of at least two polymers incorporating propylene-derived units and processes for producing such blends are provided. The first polymer of the blend is a low crystallinity polymer including propylene-derived units. The second polymer is a high crystallinity polymer including propylene-derived units. The polymer blends exhibit the beneficial performance characteristics of low crystallinity propylene polymers while minimizing certain processing and handling problems associated with low crystallinity propylene polymers. Low crystallinity propylene polymer pellets often exhibit a tendency to agglomerate because of the softness of such particles. Agglomeration of the pellets creates problems in handling and processing the particles. The polymer blends disclosed reduce the tendency of polymer pellets to agglomerate while maintaining the desirable physical properties, such as elastomeric properties, exhibited by low crystallinity propylene polymers. Various processes for producing the polymer blends are also provided.

Polymeric Compositions Including Their Uses And Methods Of Production
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US Patent:

8071681, Dec 6, 2011
Filed:

Jul 20, 2005
Appl. No.:

11/632741
Inventors:

Srivatsan Srinivas Iyer - Pearland TX, US
Sudhin Datta - Houston TX, US
Trazollah Ouhadi - Liege, BE
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

C08L 47/00
C08L 33/02
B32B 9/00
US Classification:

525 98, 525 97, 525191, 525221, 525222, 525 95, 4283184, 4283193, 4283197, 4283199
Abstract:

Polymeric compositions and methods of making and using such compositions are provided. The compositions incorporate at least one component that is a polymer including propylene-derived units and at least one component that is a styrenic block copolymer. The polymeric compositions are found to have desirable elastomeric properties while at the same time exhibiting beneficial processability characteristics. The unique combination of processability and performance attributes result in the polymeric compositions useful in a variety of applications such as films, fibers, woven and non-woven fabrics, sheets, molded objects, extruded forms, thermoformed objects, and all products made from such application materials.

Elastic Articles And Processes For Their Manufacture
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US Patent:

20060062980, Mar 23, 2006
Filed:

Jan 8, 2004
Appl. No.:

10/540495
Inventors:

Srivatsan Iyer - Pearland TX, US
Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:

B32B 27/08
B32B 27/32
US Classification:

428212000, 428523000, 428516000, 264173190, 264210100
Abstract:

The present invention includes an article which includes a low crystallinity layer and a high crystallinity layer capable of undergoing plastic deformation upon elongation. The low crystallinity layer includes a low crystallinity polymer and optionally an additional polymer. The high crystallinity layer includes a high crystallinity polymer having a melting point at least 25 C. higher than that of the low crystallinity polymer. The low crystallinity polymer and the high crystallinity polymer can have compatible crystallinity. The present invention also includes an article which includes a low crystallinity layer and a plastically deformed high crystallinity layer.