Abstract: The dimer content in alpha, beta- ethylenically unsaturated ketones may be reduced by treating the ketone with a peroxide of the formula ##STR1## wherein R.sub.4 is a C.sub.1-6 branched or straight chain alkyl radical or a C.sub.6-10 aromatic radical and n is 1 or 2. The treated ketone has a faster rate of polymerization with other ethylenically unsaturated monomers.

Abstract: The present invention relates to methods and apparatus for measuring the linear dimensions and determining the three-dimensional, spatial volume of objects. In the preferred embodiments, ultrasonic sensing is employed, alone or in combination with other measuring methods such as light curtains and the timing of moving objects, to ascertain linear dimensions. The preferred embodiments are particularly adapted to the measurement of large and irregularly configured objects, such as palletized loads, and to the measurement of moving, rectangular objects of random orientation with respect to the direction of travel.

Abstract: A high performance, high current, miniaturized low voltage power supply is disclosed which employs a thick copper-ceramic film primary board, a direct bonded copper secondary, flexible printed circuit power inductors, the power supply has high power leadless chip carriers, hybrid rectifier packages and various electrical circuits including application specific integrated circuits for control, a turn on protection and current sharing.

Abstract: This invention relates to unsaturated polyester compositions having improved impact resistance and good surface appearance. The compositions contain a novel additive. The novel additive comprises the partially polymerized product of a mixture comprising an elastomer and a styrenic monomer.