Silbond Corporation

Keller Companies, Inc.

Walter L Magee

Adam William Emerson

Wallace G Joslyn

Richard S Odneal

Robert R Keller

William D Varnell

George N Ghattas

William J Corbett

Jonathan A Beaupre

Janet D Virr

John W McKenna

An stable ethylsilicate polymer having a dynamic viscosity of 10 centipoises (cps) to 1,000 cps at 25&#xb0; C. and 50 wt % to 60 wt % silica (SiO). The stable ethylsilicate polymer includes not greater than 1 wt % of TEOS monomer. The process of forming the ethylsilicate polymer includes a two step addition of catalysts. A hydrolysis catalyst is added initially, for example hydrochloric acid, and a second catalyst is added subsequently, such as phosphonitrilic chloride trimer. The ethylsilicate polymer is used to form MQ resins.

Stable ethylsilicate polymers

A stable suspension of ethylpolysilicate nanoparticles having a size of between about 5 nm and 120 nm are in water and stabilized with between about 0.05 and 5 weight percent tetraalkylammonium hydroxide. The particles are between about 95% and 99.5% hydrolyzed and have superior removal rates when used in chemical mechanical polishing. A process for making ethylpolysilicate nanoparticles includes the step of adding reverse osmosis water and 25% tetramethylammonium hydroxide and ammonium hydroxide to a reactor, agitating the mixture and heating the mixture to about 80&#xb0; C. Tetraethylalkoxy silane is added to the mixture and the mixture stirred and hydrolyzed. Ethanol is then removed. The mixture was then subjected to a vacuum to remove additional distillate. The material left in the reactor was then transferred to a plastic drum.

Suspension of nanoparticles and method for making the same

An MQ resin including at least 30% SiO, preferably at least 50 wt % SiO, and having dynamic viscosity of 50 centipoises (cps) to 750 cps at 25&#xb0; C. is produced from a stable ethylsilicate polymer. The ethylsilicate polymer includes not greater than 1 wt % of TEOS monomer. The ethylsilicate polymer is produced by a two step addition of catalysts wherein a hydrolysis catalyst, for example, hydrochloric acid is added initially and a second catalyst, such as phosphonitrilic chloride trimer, is added subsequently.

MQ resins from stable ethylsilicate polymers

An improved aerogel and a process for production of the same. The improved aerogel which has a significantly reduced dust (e.g., aerogel fines) and static charge, as compared with conventional aerogel products. The aerogel also has a 'sticky' or 'tacky' nature which can be used to attract any available dust, fines and/or particulate matter and also restrict flowability of aerogel granules, for example, out of a breached container and thereby minimize loss of the aerogel product through any breached opening.

Aerogel with reduced dust, static charge, and having reduced fluidity when in granular form

A stable MQ resin solution with over 50% SiOand having viscosity of 50 cps at 25&#xb0; C. to about 750 cps at 25&#xb0; C. and which is essential free of monomer is disclosed. The stable resin solution is made by a two step addition of catalysts wherein a hydrolysis catalysts, as for example, hydrochloric acid is added initially and a second catalysts such as Phosphonitrilic chloride trimer is added subsequently.

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Manitou Beach, MI, United States of America

Walter L Magee