Abstract: An improved built-in ceiling light. The dimensions of openings provided in false ceilings for the installation of built-in ceiling lights result in light housing dimensions which do not always provide the necessary storage space for the electrical components, in particular the ballast. It is known to obtain this necessary storage space by means of a projection from a side wall on the side of the housing base. However, this impedes the installation assembly. To avoid this difficulty the improved ceiling light has a projection which is a lid pivotally mounted to a housing base and to which the electrical components are attached. Then, during the insertion of the light housing, the lid, together with the electrical components, can be pivoted sufficiently far through a rectangular opening in a longitudinal side wall into the light housing.

Abstract: A process for improving the free-flowing qualities of a urea formaldehyde resin which comprises adding to said resin:A. a polyorganosiloxane having recurring units of the formulaX(R).sub.a SiO.sub.3-a/2whereinX is alkyl, alkylene or a hydrocarbon having a functional group;R is hydrogen, alkyl, alkoxy or aryl;a is a value from 0 to 2, or a hydrolysis product thereof;OrB. a silane of the formula Y--A.sub.n --Si(R").sub.b (OR').sub.3-bWhereinY is a substituted or unsubstituted amino, carboxyl, glycidyl, mercapto or alkenyl group;A is a bivalent straight or branched-chained alkylene radical which can contain oxygen in the chain;R' is an alkyl or hydroxyalkyl radical;R" is a C.sub.1 -C.sub.4 alkyl radical;n is 0 or 1; andb is 0, 1 or 2, or a hydrolysis product thereof.

Abstract: Manufacture of rapidly hardening phenol formaldehyde resin molding compositions having improved thermal stability and good flow characteristics by incorporating into the molding compositions hexamethylenetetramine in the form of a metaboric acid addition product. The resulting molding composition is then rolled and ground to produce the molding composition of improved properties.