公开(公告)号：US10214421B2

公开(公告)日：2019-02-26

申请号：US15869856

申请日：2018-01-12

Applicant: CYTEC INDUSTRIES INC.

Inventor： Lei Zhang ,  John Carr ,  Haunn-Lin Tony Chen

IPC: C01B25/235 ,  C01B25/22 ,  C08F26/02 ,  C08F222/38 ,  C02F1/70 ,  C02F5/12 ,  C23F14/02 ,  C23F15/00 ,  C08F26/04 ,  C09K15/18 ,  C09K15/22

Abstract: Processes for inhibiting scale produced during wet process phosphoric acid production by adding a scale-inhibiting amount of a reagent having a primary amine-containing polymer to at least one stage of a wet process phosphoric acid production process are provided herein, wherein said primary amine-containing polymer includes one or more organic moieties that reduce the polymer's solubility in an aqueous environment as compared to its native form, thereby reducing or preventing scale in the wet process phosphoric acid production process.

公开(公告)号：US11046794B2

公开(公告)日：2021-06-29

申请号：US14969918

申请日：2015-12-15

Applicant: Cytec Industries Inc

Inventor： Airong Song ,  Lei Zhang ,  Douglas Cywar ,  Haunn-Lin Tony Chen ,  Matthew Taylor

IPC: C08F126/02 ,  C02F5/10 ,  C08F8/42 ,  C02F5/12 ,  C08F130/08 ,  C02F1/68 ,  C08F226/02 ,  C08L37/00 ,  C02F103/02 ,  C08F271/00

Abstract: Silicon containing polyamine scale inhibitors derived from poly(primary amine)s are disclosed. The scale inhibitors can be used to reduce siliceous scale formation in industrial process streams such as alumina recovery process streams, nuclear waste streams and kraft paper mill effluent streams.

公开(公告)号：US09902617B2

公开(公告)日：2018-02-27

申请号：US14620083

申请日：2015-02-11

Applicant: CYTEC INDUSTRIES INC.

Inventor： Lei Zhang ,  John Carr ,  Haunn-Lin Tony Chen

IPC: C01B25/235 ,  C08F26/02 ,  C08F222/38 ,  C01B25/22 ,  C02F1/70 ,  C02F5/12 ,  C23F14/02 ,  C23F15/00

CPC classification number: C01B25/22 ,  C01B25/235 ,  C02F1/70 ,  C02F5/12 ,  C08F26/02 ,  C08F26/04 ,  C08F222/38 ,  C08F2800/10 ,  C09K15/18 ,  C09K15/22 ,  C23F14/02 ,  C23F15/005

Abstract: Processes for inhibiting scale produced during wet process phosphoric acid production by adding a scale-inhibiting amount of a reagent having a primary amine-containing polymer, or salt thereof, to one or more stages of a wet process phosphoric acid production stream are provided herein, wherein the primary amine-containing polymer includes an A mer according to Formula (I): where R is H, C1-C6 alkyl, C2-C6 alkenyl, halide, or carboxyl; R1 is H, C1-C6 alkyl, or C2-C6 alkenyl; R2 is H or an A mer according to Formula (I) as herein defined; R3 is chosen from a direct bond or a C1-C12 alkyl, C2-C12 alkenyl, or a C6-C12 aryl group; and n is an integer chosen to provide a weight average molecular weight of the primary amine-containing polymer of at least 300 Daltons, and wherein the percentage of primary amines in the polymer is from 30 mole % to 100 mole % based on the total percentage of mer units in the polymer.

公开(公告)号：US09718699B1

公开(公告)日：2017-08-01

申请号：US15064923

申请日：2016-03-09

Applicant: Cytec Industries Inc.

Inventor： Krzysztof Andruszkiewicz ,  Raymond Salvatore Farinato ,  Haunn-Lin Tony Chen ,  Scott Griffin ,  Marie E Anderson

IPC: C01F7/34

CPC classification number: C01F7/34 ,  C01F7/145 ,  C01P2004/61 ,  C01P2006/80

Abstract: Disclosed herein is a method of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising an alkyl or alkenyl succinic anhydride is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the aqueous emulsion of an alkyl or alkenyl succinic anhydride.

公开(公告)号：US20160176995A1

公开(公告)日：2016-06-23

申请号：US14969918

申请日：2015-12-15

Applicant: Cytec Industries Inc

Inventor： Airong Song ,  Lei Zhang ,  Douglas Cywar ,  Haunn-Lin Tony Chen ,  Matthew Taylor

IPC: C08F126/02 ,  C02F1/68

Abstract: Silicon containing polyamine scale inhibitors derived from poly(primary amine)s are disclosed. The scale inhibitors can be used to reduce siliceous scale formation in industrial process streams such as alumina recovery process streams, nuclear waste streams and kraft paper mill effluent streams.

Abstract translation: 公开了衍生自聚（伯胺）的含硅多胺垢抑制剂。 减阻剂可用于减少工业过程流中的硅质垢形成，例如氧化铝回收工艺流，核废料流和牛皮纸浆流出物流。