公开(公告)号：US06818700B1

公开(公告)日：2004-11-16

申请号：US10049377

申请日：2002-06-25

申请人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Bernard Guyot ,  Jean Lepetit

发明人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Bernard Guyot ,  Jean Lepetit

IPC分类号： C08F2002

CPC分类号： C11D3/3757 ,  C08F120/06 ,  C08F220/06

摘要： Novel biodegradable polymers consisting of a biodegradable core bound to at least two carboxylic polyacid-based branches via a bond capable of being broken by hydrolysis or by oxidation are described. Biodegradable detergent compositions containing such polymers are also described.

摘要翻译： 描述了由可通过水解或氧化破坏的键与至少两个基于羧酸多酸的分支结合的可生物降解的核心组成的新型可生物降解的聚合物。 还描述了含有这种聚合物的可生物降解的洗涤剂组合物。

公开(公告)号：US06900171B1

公开(公告)日：2005-05-31

申请号：US09701681

申请日：1999-06-01

申请人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Cédric Loubat ,  Jean Lepetit

发明人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Cédric Loubat ,  Jean Lepetit

IPC分类号： C08F220/04 ,  C08L101/16 ,  C11D3/37

CPC分类号： C08F220/04 ,  C11D3/3757

摘要： A hydrophilic polymer with improved biodegradability and particular usefulness in detergent compositions contains units derived by polymerization from at least one monomers A bearing a carboxylic acid function or an equivalent function, units derived by polymerization from at least one monomers B bearing an electron-rich group or a function capable of introducing an electron-rich group into the main chain, and, optionally, units derived by polymerization from at least one monomers C which is copolymerizable with A and B, but is different from A and B. Examples of suitable monomers as monomers A include maleic anhydride, acrylic acid, methacrylic acid, itaconic acid, fumaric acid and maleic acid, and the salts thereof. Examples of suitable monomers as monomers B include butadiene, isoprene, chloroprene, dimethylbutadiene, cyclohexadiene, butadienecarboxylic acid, butadienedicarboxylic acid, acetylene, acetylenecarboxylic acid and acetylenedicarboxylic acid. Suitable monomers as monomers C include vinyl, acrylic and styrene monomers and derivatives thereof.

摘要翻译： 具有改善的生物降解性和在洗涤剂组合物中特别有用的亲水性聚合物含有由至少一种具有羧酸官能团或等同官能团的单体A的聚合衍生的单元，由至少一个带有富电子基团的单体B聚合得到的单元或 能够将富电子基团引入到主链中的功能，以及任选的由至少一种可与A和B共聚但与A和B不同的单体C聚合得到的单元。作为 单体A包括马来酸酐，丙烯酸，甲基丙烯酸，衣康酸，富马酸和马来酸，及其盐。 作为单体B的合适单体的实例包括丁二烯，异戊二烯，氯丁二烯，二甲基丁二烯，环己二烯，丁二烯羧酸，丁二酸二甲酸，乙炔，乙炔基羧酸和乙炔二羧酸。 作为单体C的合适的单体包括乙烯基，丙烯酸和苯乙烯单体及其衍生物。

公开(公告)号：US06767885B1

公开(公告)日：2004-07-27

申请号：US09701681

申请日：2001-06-01

申请人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Cédric Loubat ,  Jean Lepetit

发明人： Christian Gancet ,  Rosangela Pirri ,  Bernard Boutevin ,  Cédric Loubat ,  Jean Lepetit

IPC分类号： C08F22004

摘要： A hydrophilic polymer with improved biodegradability and particular usefulness in detergent compositions contains units derived by polymerization from at least one monomers A bearing a carboxylic acid function or an equivalent function, units derived by polymerization from at least one monomers B bearing an electron-rich group or a function capable of introducing an electron-rich group into the main chain, and, optionally, units derived by polymerization from at least one monomers C which is copolymerizable with A and B, but is different from A and B. Examples of suitable monomers as monomers A include maleic anhydride, acrylic acid, methacrylic acid, itaconic acid, fumaric acid and maleic acid, and the salts thereof. Examples of suitable monomers as monomers B include butadiene, isoprene, chloroprene, dimethylbutadiene, cyclohexadiene, butadienecarboxylic acid, butadienedicarboxylic acid, acetylene, acetylenecarboxylic acid and acetylenedicarboxylic acid. Suitable monomers as monomers C include vinyl, acrylic and styrene monomers and derivatives thereof.

公开(公告)号：US4647439A

公开(公告)日：1987-03-03

申请号：US864402

申请日：1986-05-19

申请人： Jean Lepetit

发明人： Jean Lepetit

IPC分类号： C01F7/02 ,  C01F7/06 ,  C01F7/46 ,  C01F7/47

CPC分类号： C01F7/46 ,  C01F7/0626 ,  C01F7/47

摘要： A process for the continuous production of alumina by means of the Bayer process by alkaline attack in reactors on bauxites which primarily consist of aluminum monohydrates and contain silica in a free state or combined in the form of aluminum silicate, the essential aim of which is to delay scaling of the reactors by deposits of sodium silico-aluminate on the reactor walls. The process comprises the following steps: (1) the bauxite is put into suspension by crushing in a sodic liquor (aqueous solution of caustic soda); (2) the suspension is raised to a temperature of from 90.degree. to 108.degree. C. and held at that temperature for a period of time sufficient to convert at least 75% of the aluminum silicate contained in the bauxite into insoluble sodium silico-aluminate; (3) The suspension is then subjected to steam heating by passing through a tube-type heat exchanger under pressure at a temperature which is at least equal to 160.degree. C. and preferably is from 160.degree. to 230.degree. C., with a speed of rise in temperature of from 2.degree. to 12.degree. C./minute and with a speed of flow in the tubular reactor of from 0.4 to 7 meters per second; (4) by heat exchange with a heat exchange fluid in a tubular reactor, the suspension is raised to a temperature of from 200.degree. to 300.degree. C. and preferably from 230.degree. to 290.degree. C. and maintained at that temperature so as to solubilize at least 90% of the extractible alumina; and (5) the suspension is returned to atmospheric pressure by successive expansion operations, with recovery of the steam.

摘要翻译： 一种通过碱性攻击在铝土矿的反应器中连续生产氧化铝的方法，铝土矿主要由一水合铝和含二氧化硅的硅酸铝组成，其形式为硅酸铝，其主要目的是 通过反应器壁上硅铝酸钠的沉积来延迟反应器的缩放。 该方法包括以下步骤：（1）通过在苏打液（苛性钠水溶液）中粉碎，将铝土矿粉碎成悬浮液; （2）将悬浮液升温至90℃至108℃，并在该温度下保持足以将至少75％的铝土矿中含有的硅酸铝转化成不溶性硅铝酸钠的时间 ; （3）然后将悬浮液通过管式热交换器在至少等于160℃，优选为160℃至230℃的压力下进行蒸汽加热，速度为 温度上升2℃至12℃/分钟，并且管式反应器中的流速为0.4至7米/秒; （4）通过与管式反应器中的热交换流体进行热交换，将悬浮液升温至200℃至300℃，优选230℃至290℃，并保持在该温度，以便 溶解至少90％的可提取氧化铝; 和（5）通过连续膨胀操作将悬浮液恢复至大气压力，同时回收蒸汽。

公开(公告)号：US4650653A

公开(公告)日：1987-03-17

申请号：US857316

申请日：1986-04-30

申请人： Jean Lepetit ,  Jacques Mordini

发明人： Jean Lepetit ,  Jacques Mordini

IPC分类号： C01F7/06 ,  C01F7/46 ,  C01F7/47

CPC分类号： C01F7/46 ,  C01F7/0613 ,  C01F7/062 ,  C01F7/47

摘要： Process for the low-temperature treatment according to the Bayer cycle of gibbsite-bearing bauxite of low reative silica content, involving desilication of the said bauxite before leaching, by a liquor of low caustic soda concentration and characterized in that this sodium liquor consists of one or more washing waters originating from the Bayer cycle, mixed or otherwise with leaching liquor, wherein the weighted reactive silica content is preferably lower than 5% of the alumina content of the bauxite and the concentration of the sodium liquor used for desilication ranges from 50 to 120 g/liter of Na.sub.2 O caustic.

摘要翻译： 根据具有低二氧化硅含量的含三水铝矿的铝土矿的拜耳循环的低温处理方法，包括在浸出之前通过低苛性钠浓度的液体对所述铝土矿进行脱硅，并且其特征在于该钠液体由1个 或更多来自拜耳循环的洗涤水，混合或以其他方式与浸出液混合，其中加权的反应性二氧化硅含量优选低于铝土矿的氧化铝含量的5％，用于脱盐的钠液的浓度范围为50至 120克/升Na2O苛性碱。