Ucb S.a.

August Van Gysel

Ivan Vanden Eynde

Pierre Jacobs

Jean-Marie Loutz

Stephan Peeters

Johan Martens

Jean-Luc Dallons

Jean-Claude Vanovervelt

Paul Tastenhoye

Jean Passelcq

Ivan Vander Eynde

Process for the manufacture of methylamines

Radiation curable compositions, comprising, per 100 parts by weight,

Radiation curable compositions

A process for the manufacture of N-phenylmaleimide which comprises reacting maleic anhydride with aniline in a single step at elevated temperature in the presence of a water-immiscible organic solvent capable of forming an azeotrope with water and of p-toluenesulfonic acis as catalyst. According to the invention, N-phenylmaleimide recovery comprises the successive steps of:

Process for the manufacture of N-phenylmaleimide

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.

Process for the production of gamma-butyrolactone

Growing community of inventors

Dilbeek, Belgium

August Van Gysel