公开(公告)号：US06743938B1

公开(公告)日：2004-06-01

申请号：US10049463

申请日：2002-08-02

申请人： Jean-Francois Croizy ,  Marc Esch ,  Gilbert Esquirol

发明人： Jean-Francois Croizy ,  Marc Esch ,  Gilbert Esquirol

IPC分类号： C07C25308

CPC分类号： C07C253/00 ,  C07C255/12

摘要： This process for the production of the methyl ethyl ketone cyanohydrin of formula (I) is characterized by the fact that hydrocyanic acid and methyl ethyl ketone are reacted in the presence of diethylamine as a catalyst.

摘要翻译： 用于制备式（I）的甲基乙基酮氰醇的该方法的特征在于氢化氰酸和甲基乙基酮在二乙胺作为催化剂存在下反应。

公开(公告)号：US20090203938A1

公开(公告)日：2009-08-13

申请号：US11577072

申请日：2005-10-07

申请人： Jean-Francois Croizy ,  Michel Fauconet ,  Jean-Michel Paul ,  Rene Bonnaz

发明人： Jean-Francois Croizy ,  Michel Fauconet ,  Jean-Michel Paul ,  Rene Bonnaz

IPC分类号： C07C51/44 ,  C07C51/42

CPC分类号： B01F17/0064

摘要： The compounds of formula (I) are provided as deposition inhibitors which prevent the deposition of compounds of polymeric nature or resulting from addition reactions to (meth)acrylic double bonds during operations for the synthesis or purification or regeneration of (meth)acrylic monomers. R1 represents a C3-C30 alkyl radical, an aryl radical or an alkylaryl radical, it being possible for these radicals to be interrupted by or connected to the oxygen of the molecule via a —(OR4)o— chain where the R4 groups each independently represent an ethylene, propylene or butylene chain and o is an integer from 1 to 50; R2 represents R1, a hydrogen atom or a counterion; and R3 represents a hydrogen atom or a counterion.

摘要翻译： 提供式（I）化合物作为沉积抑制剂，其防止在（甲基）丙烯酸单体的合成或纯化或再生操作期间沉积聚合性质的化合物或由（甲基）丙烯酸双键的加成反应产生的化合物。 R1表示C3-C30烷基，芳基或烷基芳基，这些基团可能通过 - （OR4）o链链接或连接到分子的氧，其中R4基团各自独立地 代表乙烯，丙烯或丁烯链，o是1至50的整数; R2表示R1，氢原子或抗衡离子; 并且R 3表示氢原子或抗衡离子。

公开(公告)号：US5395966A

公开(公告)日：1995-03-07

申请号：US277298

申请日：1994-07-22

申请人： Jean-Francois Croizy ,  Paul Grosius

发明人： Jean-Francois Croizy ,  Paul Grosius

IPC分类号： C07C51/60 ,  C07C69/62

CPC分类号： C07C51/60

摘要： Acryloyl chloride is obtained by reaction of acrylic acid with phenylchloroform in the presence of at least one Lewis acid as catalyst and of at least one polymerization inhibitor. According to the invention the catalyst is chosen from zinc oxide and zirconium tetrachloride and the reaction is conducted at a temperature of at least 105.degree. C. In a preferred embodiment acrylic acid is added to the mixture consisting of phenylchloroform, the catalyst and the polymerization inhibitor and heated to a temperature of at least 105.degree. C., the acryloyl chloride formed distilling off as soon as the introduction of acrylic acid begins.Acryloyl chloride is a highly reactive synthesis intermediate.

摘要翻译： 丙烯酰氯通过丙烯酸与苯基氯仿在至少一种路易斯酸作为催化剂和至少一种阻聚剂的存在下反应获得。 根据本发明，催化剂选自氧化锌和四氯化锆，并且反应在至少105℃的温度下进行。在优选的实施方案中，将丙烯酸加入到由苯基氯仿，催化剂和阻聚剂 并加热到至少105℃的温度，一旦丙烯酸的引入开始，形成蒸馏出的丙烯酰氯。 丙烯酰氯是高反应性合成中间体。