Abstract: The present invention is directed to a method for treating cross-linked (cured) filled or untilled unsaturated polyester for deriving an alcohol recycle reactant useful in the synthesis of alcohol-formed derivative products. The first step of the method is the attrition of the cured unsaturated polyester to form particulates thereof. In the next step of the process, at least a fraction of any filler or fiberglass in the cured unsaturated polyester is separated to form a cured unsaturated polyester regrind. The next step is the subjecting of the cured unsaturated polyester regrind to agitated, uncatalyzed or catalyzed glycolysis in the presence of excess glycol and, optionally, a transesterification catalyst under agitation at elevated transesterification temperature. The final step of the process is the recovery of the recycle alcohol reactant for use in the synthesis of alcohol-formed derivative products.

Abstract: The short-term and long-term waviness of a smooth surface is determined quantitatively by a method which impinges light radiation onto the surface, detects the resultant light image, and mathematically processes that image. The method permits a fast, non-contact evaluation of a smooth surface with good correlation between the calculated values and the visual observation.

Abstract: A process for the preparation of maleimide by the vapor phase oxydehydrogenation of succinimide over a heterogeneous catalyst composed of copper, phosphorous, vanadium, molybdenum and oxygen is described.

Abstract: A process for the preparation of maleimide by the vapor phase oxydehydrogenation of succinimide over an iron phosphate catalyst which may also contain one or more alkali metal and alkaline earth metal components is described.

Abstract: Phosphosiderite, FePO.sub.4.2H.sub.2 O, is prepared in high yield from molten Fe(NO.sub.3).sub.3.9H.sub.2 O and H.sub.3 PO.sub.4 using a phosphosiderite seed for initiation of precipitation and crystallization.

Abstract: The amount of oxygen-containing impurities in an organic composition is reduced at an elevated temperature by contact with a supported metal oxide. For example, the amount of oxygen-containing organic impurities in a crude stilbene product obtained by oxidatively dehydrocoupling toluene using a solid oxidant is decreased by contact with zinc oxide supported on alumina at an elevated temperature and the resulting purified stilbene product is reacted with ethylene to form styrene.

Abstract: The amount of oxygen-containing impurities in an organic composition is reduced at an elevated temperature in the presence of steam using a catalyst comprising a Group VIb or Group VIII metal oxide or phosphate. For example, the amount of oxygen-containing organic impurities in a crude stilbene product obtained by the oxidative dehydrocoupling of toluene is catalytically reduced at high temperatures in the presence of steam and an iron oxide catalyst and the resulting stilbene product is reacted with ethylene to form styrene.