公开(公告)号：US5118821A

公开(公告)日：1992-06-02

申请号：US657609

申请日：1991-02-19

申请人： Jean-Luc Dallons ,  Pierre Jacobs ,  Johan Martens ,  Paul Tastenhoye ,  Ivan Vander Eynde ,  August Van Gysel

发明人： Jean-Luc Dallons ,  Pierre Jacobs ,  Johan Martens ,  Paul Tastenhoye ,  Ivan Vander Eynde ,  August Van Gysel

IPC分类号： C07D307/33 ,  B01J21/08 ,  B01J23/89 ,  B01J35/10 ,  C07B61/00 ,  C07D307/32 ,  C07D315/00

CPC分类号： C07D315/00 ,  B01J21/08 ,  B01J23/892 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1023

摘要： A process for producing gamma-butyrolactone by catalytic hydrogenation of maleic anyhydride in the liquid phase with hydrogen, at a high temperature and under pressure, in the presence of a catalyst comprising nickel and palladium deposited on a support, wherein said support is a silica based support having a very high specific surface area , the value of which may range from 50 m.sup.2 /g, preferably from about 100 m.sup.2 /g to about 800 m.sup.2 /g and more.Very high conversion rates of 90-98 mole % and excellent selectivities to gamma-butyrolactone of 95 to 97 mole % are achieved by the process.

摘要翻译： 在含有沉积在载体上的镍和钯的催化剂存在下，在氢气中，在高温和压力下，用液相中的马来酸酐催化氢化制备γ-丁内酯的方法，其中所述载体是二氧化硅基 支撑体具有非常高的比表面积，其值可以为50m 2 / g，优选为约100m 2 / g至约800m 2 / g以上。 通过该方法可达到非常高的90-98摩尔％的转化率和对γ-丁内酯的优异选择性为95-97摩尔％。

公开(公告)号：US5397641A

公开(公告)日：1995-03-14

申请号：US207089

申请日：1994-03-08

申请人： Luc Moens ,  Daniel Maetens ,  Jean-Luc Dallons ,  Jean-Marie Loutz

发明人： Luc Moens ,  Daniel Maetens ,  Jean-Luc Dallons ,  Jean-Marie Loutz

IPC分类号： B05D1/04 ,  B05D7/24 ,  C08G59/32 ,  C08G59/40 ,  C08G63/181 ,  C08G63/183 ,  C08L33/04 ,  C08L33/14 ,  C08L63/00 ,  C08L67/00 ,  C08L67/02 ,  C09D133/04 ,  C09D133/14 ,  C09D163/00 ,  C09D167/00 ,  C09D167/02 ,  B32B19/00 ,  C08F20/00

CPC分类号： C08L33/14 ,  C09D167/02 ,  C08L67/02 ,  Y10T428/29

摘要： A thermosetting powder composition which comprises (a) a specific a carboxyl-terminated polyester and (b) a glycidyl group-containing acrylic copolymer. The carboxyl-terminated polyester (a) has an acid number of 15 to 70 mg of KOH/g and must be prepared in two steps. In the first step, a hydroxyl-terminated polyester is prepared from at least one polycarboxylic acid other than 1,4-cyclohexanedicarboxylic acid, and at least one aliphatic or cycloaliphatic polyol and in the second step, the resulting hydroxyl-terminated polyester is esterified with 1,4-cyclohexanedicarboxylic acid exclusively. In addition, the composition of the polyester (a) is very specific: it contains at least 75 mole % of terephthalic acid, at least 10 mole % of 1,4-cyclohexanedicarboxylic acid and at most 14 mole % of at least one other aromatic and/or aliphatic and/or cycloatiphatic polycarboxylic acid, based on a total carboxylic acid content of 100 mole %. The thermosetting powder compositions obtained from polyester (a) and acrylic copolymer (b) are particularly useful to prepare powder paints and varnishes; they produce coatings with a high gloss, excellent mechanical properties, and at the same time, good weatherability.

摘要翻译： 一种热固性粉末组合物，其包含（a）特定的羧基封端的聚酯和（b）含缩水甘油基的丙烯酸共聚物。 羧基封端的聚酯（a）的酸值为15至70mg KOH / g，必须分两步制备。 在第一步中，由除1,4-环己烷二羧酸以外的至少一种多元羧酸和至少一种脂族或脂环族多元醇制备羟基封​​端的聚酯，在第二步中，所得到的羟基封端的聚酯用 单独的1,4-环己烷二羧酸。 此外，聚酯（a）的组成是非常特异的：它包含至少75摩尔％的对苯二甲酸，至少10摩尔％的1,4-环己烷二羧酸和至多14摩尔％的至少一种其它芳族 和/或脂族和/或脂环族多元羧酸，基于总羧酸含量为100摩尔％。 由聚酯（a）和丙烯酸共聚物（b）得到的热固性粉末组合物特别适用于制备粉末涂料和清漆; 它们产生具有高光泽，优异机械性能的涂层，同时具有良好的耐候性。