Ananda M Chatterjee, Age 774315 Harbour Pl, Missouri City, TX 77459

6593004, Jul 15, 2003

Oct 14, 1998

09/172544

Ananda M. Chatterjee - Katy TX

Union Carbide Chemicals Plastics Technology Corporation - Danbury CT

B32B 2708

428516, 442 62, 442155, 442164, 442168, 442171, 524128, 526348, 526351

This invention relates to novel extrusion coating compositions containing certain high melt flow, narrow molecular weight distribution polypropylene impact or random copolymers and composite articles comprising a substrate having such compositions melt extruded thereon.

2005000, Jan 6, 2005

Jan 13, 2003

10/502673

Christine Delabroye - Strasbourg, FR
Lena Nguyen - Midland MI, US
Jean-Francois Koenig - Strasbourg, FR
Marc Heekmann - Lampertheim, FR
William Stobby - Midland MI, US
Chung Park - Waltham MA, US
Ananda Chatterjee - Katy TX, US

C08K005/17
C08K005/02
C08K003/04
C08K005/33
C08F002/00

524236000, 521142000, 524495000, 524464000

A propylene polymer foam that contains both a bromine compound, especially an aromatic bromine compound, as a flame retardant additive and an infrared radiation blocking or attenuation compound such as carbon black or graphite and has enhanced resistance to thermal degradation over time due to incorporation of certain stabilizing additives in addition to phenolic-based antioxidants. The foam has utility in thermal insulation applications.

2010015, Jun 17, 2010

Dec 9, 2009

12/633959

Ananda M. Chatterjee - Missouri City TX, US
Tania M. LaFrance - Lago Vista TX, US
Salvatore D'Uva - Ontario, CA

Ingenia Polymers Inc. - Houston TX

C08K 5/3475
C08K 3/34
C08K 3/26
C08K 3/30
C08K 3/22
C08K 5/13
C08K 5/098
C08K 5/3492
C08K 5/07
C08K 5/105
C08K 5/43
C08K 5/20
C08K 5/521

524 91, 524442, 524445, 524425, 524423, 524413, 524432, 524323, 524394, 524424, 524100, 524359, 524291, 524169, 524230, 524450, 524141, 524449

Compacted additive blends, or polymer stabilization agent blends, can be added during the post-polymerization process to enhance the processability performance of polymers. The addition of certain compaction aids, such as high melting or non-melting metallic silicates and others, increases the resistance to friability of the compacted additive pellets. These compaction aids are non-migratory during the compaction process and after introduction into the polymer resin and thus have no deleterious effects. The additive blend can contain a variety of suitable additives in addition to the compaction aids.

5510413, Apr 23, 1996

Dec 20, 1991

7/811218

James D. McCullough - Houston TX
Thomas F. Brownscombe - Houston TX
Ananda M. Chatterjee - Houston TX

Shell Polypropylene Company - Houston TX

C08K 334

524450

Polymer compositions comprising. alpha. -olefin polymers and a minor proportion of synthetic basic zeolite are stabilized against the harmful effects of corrosion of metal surfaces when processed through mechanical equipment such as molds and extruders where the composition normally contacts metal surfaces.

6197886, Mar 6, 2001

Oct 24, 1997

8/957602

Ananda Mohan Chatterjee - Katy TX
James Douglas McCullough - Houston TX

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

C08L 2312
C08L 2316

525240

The present invention relates to compositions containing impact copolymer compositions that are a blend of a propylene polymer phase and a rubber phase in which the ethylene content of the rubber phase is between about 75 to about 95% by weight. The rubber content of the impact copolymer composition ranges between about 35% by weight to about 60% by weight. The crystallinity of the high ethylene-content rubber phase provides overall improvement in film properties and also balance of film tensile properties in the machine and transverse directions. Compared to traditional impact copolymer compositions having a low ethylene content-rubber phase, the inventive copolymers have significantly enhanced melting and crystallization peaks due to polyethylene-like crystallinity in the rubber phase.

5948839, Sep 7, 1999

May 28, 1997

8/864161

Ananda M. Chatterjee - Katy TX

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

C08J 515

524108

Polypropylene impact copolymer compositions are provided which contain a homopolymer phase of predominantly homopolymeric polypropylene, a copolymer phase of copolymerized ethylene and propylene, and a nucleating agent. The inventive compositions have a rubber content (Fc) in the range of 25 to 45% by weight, a crystallization temperature in the range of 122 to 132. degree. C. , a melt flow in the range of about 7 to about 60 dg/min, and a ratio of the intrinsic viscosity of the copolymer phase to the intrinsic viscosity of the homopolymer phase of 1. 4 to about 1. 9. The polypropylene impact copolymer compositions may be used to form cast films which preferably are soft, quiet, and suitable for use in products to be used next to the skin, such as diapers, adult incontinence pads and feminine hygiene products.

6022628, Feb 8, 2000

Aug 11, 1997

8/909385

Ananda Mohan Chatterjee - Katy TX
Randolph Neil Campbell - Katy TX

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

B32B 2732

428523

A polymer composition having improved balanced mechanical and optical properties comprising (i) a random copolymer comprising from about 0. 8% to about 20% by weight of butene-1 and from about 80% to about 99. 2% by weight of propylene, and (2) from about 0%-0. 35% by weight of polymer composition of a synthetic amorphous silica antiblock agent.

4645792, Feb 24, 1987

Feb 19, 1985

6/702855

Ananda M. Chatterjee - Houston TX

Shell Oil Company - Houston TX

C08L 2320

524490

The crystallization from the melt of an elastomeric stereo-regular butene-1 polymer composition is promoted by adding a small amount of a nucleating agent selected from the group consisting of stearamide; N,N'-ethylene-bis-stearamide; 1-napthalene acetamide; benzamide; low molecular weight high density polyethylene and isotactic polypropylene.