Abstract: The corrosion protecting action of iron phosphate or zinc phosphate coatings on mild steel is markedly raised by treating with solutions of .alpha.-aminophosphonic or -phosphonous acids or their water soluble salts. Compounds having more than one amino and more than one phosphonic or phosphonous acid groups are also suitable. Paint films on metal surfaces pretreated in this manner show a considerably better adhesion than on untreated surfaces.

Abstract: Compounds having the formula ##STR1## whereinR.sup.1 is hydrogen, alkyl or benzyl andR.sup.2 is alkyl, benzyl or a hindered phenolic group are good light stabilizers and antioxidants. These compounds are prepared by reacting 2,6-dihydroxy-9-azabicyclo[3.3.1]nonane with an appropriate carboxylic acid.

Abstract: Adhesion of metals to vulcanizable elastomers is promoted by a process of incorporating into the elastomer a metal deactivator and then vulcanizing the elastomeric composition while it is in contact with the metal surface.

Abstract: This invention provides compositions containingA. a polyimide and polyamide-imide terminated with olefinic unsaturated end groups, or the corresponding polyamide-acids in combination with a reactive Schiff base compound, andB. a polyimide and polyamide-imide terminated with a Schiff base end group or the corresponding polyamide acids in combination with a reactive N,N'-bis-imide.These Schiff bases and N,N'-bis-imide compounds facilitate processing of the prepolymer resins by lowering the softening temperature, under processing conditions, and chain-extend and cross-link the base resins.

Abstract: Alkyl alkanoate derivatives of substituted piperazines are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds may be formed by reacting a substituted piperazine with an acrylate or reacting a substituted piperazine with an .alpha.-haloalkanoate. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is n-octadecyl-.beta.-(15{7,15-diazadispiro[5,1,5,3]hexadecane}propionate.

Abstract: New 3,5-dialkyl-4-hydroxybenzyl-oxiranes and the corresponding thiiranes are used as stabilizers for polymers. The oxiranes are prepared from the corresponding olefins by reaction with percarboxylic acids or from alkali phenoxides and epichlorohydrines. The thiiranes are prepared from the oxiranes by the usual sulfidation methods.

Abstract: Adhesion of metals to vulcanizable elastomers is promoted by a process of incorporating into the elastomer an organo-nickel salt and then vulcanizing the elastomeric composition while it is in contact with the metal surface.

Abstract: A mixture of phenylindane diamines is prepared by a process comprising acid-catalyzed dimerization of .alpha.-methylstyrene and subsequent nitration and reduction of the phenylindane reaction product. This phenylindane diamine mixture is useful in polymide polymers and as a curing agent for epoxy resins.

Abstract: This invention provides compositions containing thermally stable prepolymers with azadiene end groups, and compositions containing such prepolymers in combination with dienophiles and the chain-extended and cross-linked polymers obtained from these systems.The combination of such prepolymers with dienophiles facilitates processing of the prepolymer resin by lowering the softening and curing temperatures under processing conditions.

Abstract: Benzoyloxybenzamides having the formula ##SPC1##WhereinR.sup.1 and R.sup.2 are lower alkyl or cycloalkyl,R.sup.3 and R.sup.4 are hydrogen, lower alkyl or cycloalkyl,R.sup.5 is hydrogen or alkyl,R.sup.6 is alkyl when n is 1 and alkylene when n is 2 or greaterAre useful as stabilizers of organic materials such as polyolefins.

Abstract: In the manufacture of monomethyl-tin trichloride by disproportionation of tin tetrachloride with dimethyl-tin dichloride, high yields are achieved by employing phosphines, arsines and stibines or onium compounds of elements of the fifth main group in the periodic system as the catalyst, optionally together with a co-catalyst.

Abstract: 1,3,4-Oxadiazolones and 1,3,4-thiadiazolones substituted in position 3 by sterically hindered p-hydroxybenzyl and in position 5 by mono- or divalent hydrocarbon or by alkoxy or alkylthio and the 2-thiono analogs of the above defined compounds can be synthesized by hydroxybenzylation of the corresponding 3-hydrogen compounds, for instance, with formaldehyde and a sterically hindered phenol. Intermediately the 3-hydroxymethyl compounds are formed which may be isolated. The hydroxybenzylation may further be accomplished by means of the corresponding hydroxybenzyl halides, amines or dithiocarbaminates. The products are stabilizers for organic polymers to protect them against thermo-oxydative degradation. They show an outstanding stability against discoloration.

Abstract: 3,5-dialkyl-4-hydroxyphenylalkyl substituted piperazine diones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the alkylation reaction between a substituted piperazine dione and 3,5-dialkyl-4-hydroxyphenylalkyl halide. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15-(3',5'-di-t-butyl-4'-hydroxybenzyl)(7,15-diazadispiro[5,1,5,3]hexadecan e-14,16-dione).

Abstract: Novel (3-thioxo-1,2-dithiol-4-yl)substituted triaylphosphates and thiophosphates are used as additives for lubricating oils. The are prepared by reacting corresponding phosphoryl chlorides with 4-(hydroxy-aryl)-1,2-dithiole-3-thiones.

Abstract: Alkyl alkanoate derivatives of substituted piperazinediones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds may be formed by reacting a substituted piperazinedione with an acrylate or a crotonate, or reacting the alkali or alkaline earth salt of a substituted piperazine dione with a haloalkanoate. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is n-octadecyl-.beta.-(15{7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione}pr opionate.

Abstract: 2,2,7,7-Tetraalkyl- and 2,7-dispiroalkylene-5-oxo-1,4-diazacycloheptanes substituted in 4-position by mono- or tetravalent radicals are powerful light-stabilizers for organic polymers. They possess higher compatibility than their 4-unsubstituted homologues, from which they may synthesized by reactions known for N-alkylation. Preferred substituents in 4-position are alkyl, alkylene, alkenyl, aralkyl and esteralkyl groups. The 1-nitroxyls derived from the imidazolidines by oxydation with hydrogen peroxide or percarboxylic acids too are good light stabilizers.

Abstract: Method for inhibiting the corrosion and scale forming tendencies of water or an aqueous system which comprises treating the water or aqueous system with from 0.1 to 500 p.p.m. of an additive combination comprising zinc and hydrolysed polymaleic anhydride.

Abstract: A stable phenolic antioxidant dispersion is prepared by adding, with high speed stirring, a melt of a phenolic antioxidant, which is an alkyl ester of a carboxylic acid containing an alkylhydroxyphenyl group, and a fatty acid to an aqueous solution of a base capable of forming a soap with said fatty acid.The dispersion may also be prepared by adding, with high speed stirring, a melt of the phenolic antioxidant to water, where either or both of the antioxidant and water contain an anionic or nonionic surfactant.These aqueous dispersions are useful in the stabilization of substrates which are better stabilized with water dispersible antioxidants against oxidative degradation induced by heat and/or light.

Abstract: New bis-imides and tris-imides of the formula ##EQU1## in which A and A' denote aromatic radicals which are optionally substituted or interrupted by an oxygen atom, an alkylene group or a sulphonyl group, Z denotes a radical of the formulae ##EQU2## D denotes an oxygen atom or sulphur atom, m denotes the number 1 or 0 and n denotes the number 2 or 3, are obtained by cyclizing dicarboxylic acid monoamide compounds of the formula ##EQU3## WITH ELIMINATION OF WATER. The bis-imides and tris-imides, mixed with azomethines and optionally with curing catalysts, can be used for the manufacture of moulded materials having technically very valuable mechanical and dielectric properties.

Abstract: Organic materials, especially polyolefins, which are subject to ultraviolet light degradation, are effectively stabilized with compounds having the formula ##SPC1##WhereinR.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, .beta.-methoxyethyl, alkenyl, propargyl, benzyl, or alkenyl substituted benzyl, andR.sub.4 is lower alkylene.