Cytec Technology Corporation

American Cyanamid Company

Cytech Technology Corp.

Howard Ivan Heitner

Donald Paul Spitzer

Alan S Rothenberg

Frank Kula

Matthew L Taylor

Roderick Glyn Ryles

H-L Tony Chen

Haunn-Lin Tony Chen

Qi Dai

Matthew Taylor

Huann-Lin Tony Chen

H-L Chen

Hydrophobically modified Si-containing polyamines are useful for treating scale in industrial process streams. Preferred hydrophobically modified Si-containing polyamines are particularly useful for treating aluminosilicate scale in difficult-to-treat industrial process streams, such as in the Bayer alumina process streams, nuclear waste streams and kraft paper mill effluent streams.

Hydrophobically modified polyamine scale inhibitors

The suspended solids content of a Bayer process stream is reduced by contacting the stream with silicon-containing polymers.

Use of silicon-containing polymers to improve red mud flocculation in the bayer process

Materials and methods are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing &#x2014;Si(OR&#x2033;)are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream or a high level nuclear waste processing plant. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.

Silane substituted polyalkylene oxide reagents and methods of using for preventing or reducing aluminosilicate scale in industrial processes

Materials and a method are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing &#x2014;Si(OR&#x2033;)(where R&#x2033; is H, an alkyl group, Na, K, or NH) are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.

Compositions for preventing or reducing aluminosilicate scale in industrial processes

Silane substituted polyalkylene oxide reagents and methods of using for preventing or reducin aluminosilicate scale in industrial processes

Materials and a method are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing &#x2014;Si(OR&#x2033;)3 (where R&#x2033; is H, an alkyl group, Na, K, or NH4) are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.

Composition for preventing or reducing aluminosilicate scale in industrial processes

Materials and a method are provided whereby polymers with least 0.5 mole % of the pendant group or end group containing &#x2014;Si(OR&#x2033;)(where R&#x2033; is H, an alkyl group, Na, K, or NH) are used to control aluminosilicate scaling in an industrial process having an alkaline process stream such as a pulping mill process stream or a high level nuclear waste processing plant. When materials of the present invention are added to the alkaline process stream, they reduce and even completely prevent formation of aluminosilicate scale on equipment surfaces such as evaporator walls and heating surfaces. The present materials are effective at treatment concentrations that make them economically practical.

Silane substituted polyethylene oxide reagents and method of using for preventing or reducing aluminosilicate scale in industrial processes

Materials and a process are provided whereby polymers with the pendant group or end group containing &#x2014;Si(OR&#x2033;)(where R&#x2033; is H, an alkyl group, Na, K, or NH) are used to control aluminosilicate scaling in a Bayer process. When materials of the present invention are added to the Bayer liquor before the heat exchangers, they reduce and even completely prevent formation of aluminosilicate scale on heat exchanger walls. The present materials are effective at treatment concentrations that make them economically practical.

Polymers for preventing or reducing aluminosilicate scale in a bayer process

Method and compositions for preventing or reducing aluminosilicate scale in alkaline industrial processes

Materials and a process are provided whereby polymers with the pendant group or end group containing &mdash;Si(OR&Prime;) (where R&Prime; is H, an alkyl group, Na, K, or NH ) are used to control aluminosilicate scaling in a Bayer process. When materials of the present invention are added to the Bayer liquor before the heat exchangers, they reduce and even completely prevent formation of aluminosilicate scale on heat exchanger walls. The present materials are effective at treatment concentrations that make them economically practical.

Method of preventing or reducing aluminosilicate scale in a bayer process

Stable, gel-free, water-in-oil microdispersions comprising a continuous phase of an oil and an emulsifier and a discontinuous phase of an aqueous solution of a hydroxamated vinyl polymer are disclosed. Also disclosed is a method for the production of the above-described microdispersions wherein neutralized hydroxylamide and excess base are reacted with a microdispersion of the vinyl polymer.

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Stamford, CT, United States of America

Howard Ivan Heitner