Abstract: An improved process and composition for water- and oil-proofing textiles which comprises treating a textile with a polymeric fluorocarbon finishing agent and at least one reactive polymer extender of the formula ##EQU1## and curing the treated textile at from 80.degree. to 170.degree. C for 0.1 to 60 minutes; wherein C.sub.1 and C.sub.2 are carbon atoms of a polyalkylene copolymer chain, R and R' are hydrogen, alkyl, phenyl, --COOH or a segment of a polyalkylene chain, R.sub.1 and R.sub.2 are alkyl, aryl, aralkyl, alkaryl, or the like, of up to about 20 carbon atoms, and X is a halogen. The treatment in accordance with the present invention results in synergistic improvements in the oil- and/or water-repellent properties of the conventional fluorocarbon agents.

Abstract: 1. A novel process for preparing beryllium hydride and aluminum hydride which comprises;A. adding a solution of beryllium borohydride to a solution of lithium aluminum hydride such that the ratio of lithium aluminum hydride to beryllium borohydride on a gram mole basis ranges from about 2 to about 5 and precipitating beryllium hydride in the resulting mixture, the solvent for said lithium aluminum hydride and beryllium borohydride being a liquid material inert to the reactants and products and dissolving said beryllium borohydride and lithium aluminum hydride but being a substantially non-solvent for beryllium hydride,B. separating said solid beryllium hydride from the reaction mass,C. stripping said solvent from the residual reaction mixture,D. heating the resulting substantially dry product mass at an elevated temperature of from about 45.degree. to about 140.degree. C. for a period of from about 0.25 to about 24 hours, andE.