Rajat L Duggal

20130102694, Apr 25, 2013

Jul 5, 2011

13/806369

Richard Keaton - Pearland TX, US
Peter M. Margl - Midland MI, US
Duane R. Romer - Midland MI, US
Nathan Wilmot - Missouri City TX, US
Rajat Duggal - Pearland TX, US
Rashmi Chamsarkar - Pune, IN

C08G 18/22

521118, 528 49

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a copper catalyst that contains at least one copper atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.

20130211017, Aug 15, 2013

Aug 31, 2011

13/819580

Nathan Wilmot - Missouri City TX, US
Rajat Duggal - Pearland TX, US
Juan Carlos Medina - Lake Jackson TX, US
Harshad M. Shah - Missouri City TX, US
Alan K. Schrock - Pensacola Beach FL, US

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

C08G 59/64

525523

Thermoset elastomer compositions are disclosed. Such elastomers are the reaction product of (a) an ambient temperature liquid epoxy-terminated prepolymer formed by reacting a polyoxyalkyleneamine having a molecular weight of from 3000 to 20,000 with an excess of epoxide, wherein the polyoxyalkyleneamine has at least 3 active hydrogen atoms and (b) a curing agent comprising at least one amine or polyamine having an equivalent weight of less than 200 and having 2 to 5 active hydrogen atoms. Such elastomers can be used in applications such as for sealants, adhesives, coatings, gaskets, jointing and cast elastomers.

20130225781, Aug 29, 2013

Jul 5, 2011

13/806755

Richard J. Keaton - Pearland TX, US
Peter M. Margl - Midland MI, US
Duane R. Romer - Midland MI, US
Nathan Wilmot - Missouri City TX, US
Rajat Duggal - Pearland TX, US
Rashmi Chamsarkar - Thane, IN

C08G 18/18

528 53, 528 52

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a zinc catalyst that contains at least one zinc atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.

20130253084, Sep 26, 2013

Nov 16, 2011

13/990488

Rajat Duggal - Pearland TX, US
Nathan Wilmot - Missouri City TX, US
Richard Keaton - Pearland TX, US
Alan K. Schrock - Pensacola Beach FL, US

C08G 18/08
C08G 18/22

521124, 528 73, 521156

Polyurethane elastomers are formed by curing a reaction mixture containing at least one polyisocyanate at least one polyol, an aliphatic diol chain extender and a small amount of a secondary amino compound that may have none or one or more hydroxyl groups. The reaction is catalyzed with a metal catalyst. In certain embodiments, the catalyst is an organozirconium, organotitanium or tertiary amine-based catalyst. The presence of the secondary amine compound in those cases provides for a good surface appearance and good physical properties.

20130291992, Nov 7, 2013

Aug 31, 2011

13/819566

Nathan Wilmot - Missouri City TX, US
Rajat Duggal - Pearland TX, US
Harshad M. Shah - Missouri City TX, US
Alan K. Schrock - Pensacola FL, US
Juan Carlos Medina - Lake Jackson TX, US

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

C08G 59/18
C09D 163/00
B05D 3/10
F16L 59/02

138145, 427340

The invention provides an insulation material comprising an epoxy-terminated prepolymer and an amine curing agent. The reaction production of the epoxy-terminated prepolymer and amine curing agent provides for an elastomer that combines the processing and mechanical properties of polyurethane elastomers with improved thermal-hydrolytic stability. The insulation material is particularly useful as thermal insulation and coating for subsea oil and gas applications.

20130096252, Apr 18, 2013

Jun 29, 2011

13/704162

Kamesh R. Vyakaranam - Pearland TX, US
Ling Zhang - Missouri City TX, US
William A. Koonce - Pearland TX, US
Juan Carlos Medina - Lake Jackson TX, US
Ganesh Kailasam - Pearland TX, US
Rajat Duggal - Pearland TX, US
Nathan Wilmot - Missouri City TX, US

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

C08G 18/22
C08G 18/38

524588, 528 28, 528 15, 528 21, 528 23, 528 13

Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.

20210277178, Sep 9, 2021

Dec 11, 2017

16/462666

- Midland MI, US
Harshad M. Shah - Lake Jackson TX, US
Rajat Duggal - Pearland TX, US
Nathan Wilmot - Lake Jackson TX, US

C08G 63/688
C08G 18/76
C08G 18/46
C08G 18/22
C08G 18/16
C08G 18/09
C08J 9/14
C08J 9/00

A reaction system for forming a step-growth polymerized sulfur-containing polyester polyol includes at least one sulfur-containing component selected from the group of a sulfur-containing polyol or a sulfur-containing polycarboxylic acid, an amount of the at least one sulfur-containing component being from 1 wt % to 60 wt %, at least one aromatic component selected from the group of an aromatic multi-functional ester, an aromatic multi-functional carboxylic acid, and an aromatic anhydride, an amount of the at least one aromatic component being from 1 wt % to 60 wt %, at least one simple polyol that excludes sulfur and is different from the sulfur containing polyol, an amount of the at least one simple polyol being from 0 wt % to 60 wt %, and at least one polymerization catalyst. The reaction system for forming the sulfur-containing polyester polyol has a sulfur content that is from 2 wt % to 20 wt %.

20210206937, Jul 8, 2021

Jan 15, 2021

17/149922

- Midland MI, US
- Collegeville PA, US
Rajat Duggal - Pearland TX, US
Yasmin N. Srivastava - Sugar Land TX, US
Joseph Jacobs - Yardley PA, US
Qinghao Meng - Angleton TX, US
Gregoire Cardoen - Collegeville PA, US
Ralph C. Even - Blue Bell PA, US
Morgan A. Springs - Angelton TX, US

C08J 9/00
C08G 18/48
C08G 18/76
C08G 18/16
C08G 18/24
C09D 133/02
C08G 18/20
C08G 18/18
C08K 9/10
C08G 18/08
C08J 9/36

A coated viscoelastic polyurethane foam includes a viscoelastic polyurethane foam having the coating thereon, the viscoelastic polyurethane foam having a resiliency of less than or equal to 20% as measured according to ASTM D3574, and a coating material on and embedded within the viscoelastic polyurethane foam, the coating material including an aqueous polymer emulsion and an encapsulated phase change material.