公开(公告)号：US20150225241A1

公开(公告)日：2015-08-13

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 ,  C08F222/38 ,  C08F26/02

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.

Abstract translation: 本文提供了通过向湿法磷酸生产流的一个或多个阶段添加阻垢量的具有含伯胺的聚合物或其盐的试剂来抑制湿法磷酸生产期间产生的垢的方法， 其中所述含伯胺聚合物包括根据式（I）的聚合物：其中R为H，C 1 -C 6烷基，C 2 -C 6烯基，卤化物或羧基; R1是H，C1-C6烷基或C2-C6烯基; R2是如本文定义的H或根据式（I）的A mer; R 3选自直接键或C 1 -C 12烷基，C 2 -C 12烯基或C 6 -C 12芳基; 并且n是选择以提供至少300道尔顿的含伯胺聚合物的重均分子量的整数，并且其中聚合物中伯胺的百分比为30摩尔％至100摩尔％，基于总百分比 的聚合物中的聚合物单元。

公开(公告)号：US20170225962A1

公开(公告)日：2017-08-10

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：US20180179062A1

公开(公告)日：2018-06-28

申请号：US15869856

申请日：2018-01-12

Applicant: CYTEC INDUSTRIES INC.

Inventor： Lei ZHANG ,  John CARR ,  Haunn-Lin Tony CHEN

IPC: C01B25/22 ,  C09K15/18 ,  C09K15/22 ,  C08F26/02 ,  C08F26/04

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 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.