Yadunandan L Dar

6881805, Apr 19, 2005

Jan 11, 2002

10/045881

Yadunandan L. Dar - Somerville NJ, US
Chaodong Xiao - East Hanover NJ, US
Peter J. Schlom - Somerville NJ, US

National Starch and Chemical Investment Holding Corporation - New Castle DE

C08F004/04
C08F004/28

526227, 5263285, 526346, 526340, 5262196, 5263171

The present invention is directed to a dispersion of polymer particles in a dispersing medium. The polymer particles each contain an average of more than two living radicals that are not chemically protected. The present invention is also directed to a free radical precipitation process involving combining at least one monomer in at least one solvent; dispersing said monomer solvent mixture in a dispersing medium that is non-miscible with the first solvent, using a surfactant, stabilizer or mixture thereof; initiating polymerization with at least one free-radical generating agent and conversion, to produce polymer particles containing radicals trapped by precipitation by virtue of being above the lower critical solution temperature of the system; and removing the precipitating agent either during or after free-radical generation to form a dispersion polymer in the dispersing medium having living, trapped radicals.

7375175, May 20, 2008

Feb 4, 2005

11/051359

Yadunandan Dar - Somerset NJ, US
Smita Shah - Edison NJ, US

National Starch and Chemical Investment Holding Corporation - New Castle DE

C08F 210/00

526348, 526220, 526219, 5262196, 526227

A dispersion of polymer particles, the particle containing, on average, one or more living radicals each, the radicals not being chemically protected. Further disclosed is a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.

20030153708, Aug 14, 2003

Jan 11, 2002

10/045725

Gerald Caneba - Houghton MI, US
Yadunandan Dar - Somerville NJ, US

C08F120/06

526/317100, 526/346000, 526/319000, 526/303100, 526/341000, 526/330000

The present invention is directed to a single stage free radical precipitation polymerization process for producing a copolymer involving admixing a solvent, a free-radical-forming agent, (meth)acrylic acid, and at least one monomer selected from the group consisting of styrene, vinyl acetate, methylmethacrylate, butyl acrylate, methyl acrylate, acrylonitrile, and isopropylacrylamide; initiating a free-radical precipitation polymerization to form a plurality of polymer radicals; precipitating a polymer from said polymer radicals; maintaining the admixture of reactants at a temperature above the lower critical solution temperature of said admixture; and controlling the temperature of said admixture to control the rate of propagation of the polymer. The process is useful for producing random copolymers of vinyl acetate or styrene with more than 4 percent and up to greater than 20 percent by weight of (meth)acrylic acid.

20040082709, Apr 29, 2004

Aug 1, 2003

10/632764

Yadunandan Dar - Somerville NJ, US
Smita Shah - Edison NJ, US

C08L031/00

524/556000, 524/460000

The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.

20050165158, Jul 28, 2005

Dec 2, 2004

11/002051

Yadunandan Dar - Somerset NJ, US
Smita Shah - Edison NJ, US

C08K003/00

524556000, 524080000

The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.

20050250919, Nov 10, 2005

Jul 14, 2005

11/181481

Gerald Caneba - Houghton MI, US
Yadunandan Dar - Somerville NJ, US

C08F004/06

526173000, 526172000, 526307100, 526319000, 526329700

The present invention is directed to a single stage free radical precipitation polymerization process for producing a copolymer involving admixing a solvent, a free-radical-forming agent, (meth)acrylic acid, and at least one monomer selected from the group consisting of styrene, vinyl acetate, methylmethacrylate, butyl acrylate, methyl acrylate, acrylonitrile, and isopropylacrylamide; initiating a free-radical precipitation polymerization to form a plurality of polymer radicals; precipitating a polymer from said polymer radicals; maintaining the admixture of reactants at a temperature above the lower critical solution temperature of said admixture; and controlling the temperature of said admixture to control the rate of propagation of the polymer. The process is useful for producing random copolymers of vinyl acetate or styrene with more than 4 percent and up to greater than 20 percent by weight of (meth)acrylic acid.

20070014985, Jan 18, 2007

Jul 14, 2005

11/181381

Yadunandan Dar - Somerset NJ, US
Allison Xiao - Belle Mead NJ, US
Smita Shah - Edison NJ, US
Dongyun Huang - Bridgewater NJ, US
Michael Eknoian - Warren NJ, US

B32B 7/12

42835500R

Polymer dispersion forms a non-tacky film when dry. Under the application of a suitable impulse the morphology of the film is disrupted and the film becomes tacky. The compositions of the invention find use as thermally activated films and coatings, especially pressure sensitive adhesives.

20100310747, Dec 9, 2010

May 10, 2010

12/776580

Jeanne PAULUS - Bridgewater NJ, US
Alejandro J. PEREZ-GONZALEZ - Hillsborough NJ, US
Yadunandan L. DAR - Somerset NJ, US
Rajendra KULKARNI - Overland Park KS, US

BRUNOB II B.V. - Arnhem

A21D 10/00
A23L 1/0522
A23L 1/054

426549

This invention pertains to a gluten-free bakery product which comprises a flour/starch component comprising a heat moisture treated flour. Such bakery products more closely mimic the conventional, wheat flour containing products than other gluten-free products.