Sara Arshad

US Patent:

20130096274, Apr 18, 2013

Filed:

Jun 28, 2011

Appl. No.:

13/806962

Inventors:

Kameswara R. Vyakaranam - Pearland TX, US
Ling Zhang - Missouri City TX, US
William A. Koonce - Pearland TX, US
Sara Arshad - West Springfield MA, US
Venkat S. Minnikanti - Pearland TX, US
Dwight D. Latham - Clute TX, US
Phillip S. Athey - Lake Jackson TX, US

Assignee:

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

International Classification:

C08G 18/70

US Classification:

528 29

Abstract:

Embodiments of the invention provide for compositions including a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer comprises a reaction product of at least a isocyanate capped hydrosilylated polymer and a polyol having a nominal functionality of at least 2 which is at least one of a polycarbonate polyol, a natural oil based polyol, a polyoxyalkyleneamine, a difunctional aromatic amine, a polybutyloxide polyether polyol, and a polytetramethylene glycol.

US Patent:

20130090429, Apr 11, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/805952

Inventors:

Ling Zhang - Missouri City TX, US
Kamesh R. Vyakaranam - Pearland TX, US
Sara Arshad - West Springfield MA, US
William A. Koonce - Pearland TX, US

Assignee:

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

International Classification:

C08G 18/38

US Classification:

524590, 525460

Abstract:

Embodiment of the invention provide for compositions having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer may include a reaction product of at least a polyol having a nominal functionality of at least 2 and a isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer may include a reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer may include a reaction product of a the reaction of at least a) a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000 and b) a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule.

US Patent:

20140228515, Aug 14, 2014

Filed:

Sep 17, 2012

Appl. No.:

14/342652

Inventors:

Kamesh R. Vyakaranam - Pearland TX, US
Ling Zhang - Missouri City TX, US
Venkat S. Minnikanti - Pearland TX, US
Dwight Latham - Clute TX, US
Sara Arshad - West Springfield MA, US
Rajat Duggal - Pearland TX, US
William A. Koonce - Pearland TX, US

Assignee:

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

International Classification:

C08L 71/00

US Classification:

524838

Abstract:

Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.