Abstract: An internal combustion engine with at least one cooling oil injector arranged in the motor housing, and at least one reciprocating piston made of light metal. The piston head has a combustion space depression and a closed, ring-shaped cooling oil channel arranged thereon. The channel has an inlet opening and at least one outlet opening. A cooling oil injector rigidly joined with the engine housing injects a free jet of oil aligned slanted relative to the axis of the piston. The ring-shaped cooling oil channel is partly filled with cooling oil in the motor operation. The inlet opening has an edge stretched out long in the circumferential direction of the piston, which ends funnel-like in the zone of the inside wall of the piston skirt. The piston can accommodate high stresses since the length of the inlet opening disposed in the circumferential direction of the ring-shaped cooling oil channel is slightly shorter than the length required to directly collect the oil jet in all piston positions.

Abstract: A composition comprising:a) a compound containing a phosphite or phosphonite group and at least one 2,2,6,6-tetraalkylpiperidinyl group, andb) a polyolefin which has been produced in the presence of a catalyst which is eitheri) a supported Zeigler catalyst orii) a metallocene catalyst,from which polyolefin the catalyst has not been removed.

Abstract: A composition, having good weatherability properties, comprisinga) one or more compounds of formula I ##STR1## in which m is 1;n is 0 or 1;p is 0;each R or R.sup.1 independently, is a group derived from an aliphatic, alicyclic or aromatic alcohol containing one or two OH groups; whereby the two --OH groups are not positioned to be able to form a P-containing ring;or both groups R form a group derived from an aliphatic, alicyclic or aromatic alcohol containing two OH groups in such a position that they can form a cyclic group with a single phosphorus atom;Y is --O--, --S--, --CH(R.sub.5)-- or --C.sub.6 H.sub.4 --;where R.sub.5 is hydrogen or C.sub.1-8 alkyl or COOR.sub.6 and R.sub.6 is C.sub.1-8 alkyl; andb) a polymeric material.