Abstract: Excellent stabilization of polypropylene (PP) is obtained with a hindered amine containing a polysubstituted piperazin-2-one (PSP) moiety, for example, a C.sub.2 -C.sub.12 alkylene connecting two PSP moieties, or a polyalkylene polyamine having pendant substituted oxo-piperazinyltriazine moieties (PIP-T), that is, having pendant triazine rings substituted with PSP substituents. The stabilizers are particularly effective for PP irradiated with high energy gamma-radiation. Irradiated articles made from PP stabilized with such a hindered amine have improved strength and discoloration resistance, compared to articles made from polymer stabilized with several other hindered amines tested, particularly the 2,2,6,6-tetramethyl-4-piperidyl sebacate.

Abstract: Disclosed are novel tris(N-alkyl-p-phenylenediamino)-1,3,5-triazine compounds useful as antiozonants for unsaturated high polymers. The compounds may be prepared by reacting N-alkylphenylenediamine with a cyanuric halide.

Abstract: Rubber articles subjected to ozone while under dynamic flexing conditions are protected using a novel triazine class of materials, specifically tris-(N-alkyl-p-phenylenediamino)-1,3,5-triazines. Belts, hose, air springs, roofing membranes, etc. are preferred articles of the invention.

Abstract: The present invention provides thermoplastic flame-retardant moulding compositions containing halogen-containing copolycarbonates, styrene/maleic anhydride copolymers, phosphorus compounds of the formula (I) ##STR1## and tetrafluoroethylene polymers and, if desired, further known additives.

Abstract: The invention relates to water-dispersible binders which are intended for cationic electropaints and are based on reaction products which are formed from modified epoxy resins and primary and/or secondary amines and which can, if desired, also contain crosslinking agents, pigments, flow-control agents and other customary auxiliaries. They contain as reaction products those which have been prepared by reacting(A) low molecular weight epoxy resins which contain epoxy compound aromatic groups and have an epoxide equivalent weight of less than 375 with(B) aliphatic and/or alicyclic polyfunctional alcohols having hydroxyl groups or carboxylic acids having carboxylic groups and both having a molecular weight of less than 350 and addition of the hydroxyl groups and carboxylic groups to the epoxy groups of (A) in such a way that the reaction products of (A) and (B) contain 10-45% of aromatic groups, calculated as the phenylene group, and have terminal epoxy groups.

Abstract: Compounds containing a group of the formula I ##STR1## in which R is H or C.sub.1 -C.sub.4 -alkyl, R.sup.1 is H, CN, an acyloxy group or a free valency and R.sup.2 and R.sup.3 are organic radicals can be prepared in a simple manner from the corresponding compounds containing a group of the formula Ia ##STR2## by stepwise reaction with phosgene and a secondary amine R.sup.2 --NH--R.sup.3 in the presence of a molar amount of a base. The N-diorganocarbamoyl compounds containing the group I are outstanding light stabilizers, in particular for organic polymers. They can be converted by secondary reactions into other compounds which contain the group I and which are not accessible by direct phosgenation. Many of the products thus obtainable by phosgenation or conversion are novel compounds.

Abstract: Stabilized chlorine-containing polymers containing at least one anilinotriazine of the formula I ##STR1## in which R.sub.1 is phenyl or a group of the formula II ##STR2## in which R.sub.4, R.sub.5 and R.sub.6 independently of one another are chlorine, bromine, cyano, methoxycarbonyl, ethoxycarbonyl, carbamoyl, hydroxyl, methoxy, ethoxy or C.sub.1 -C.sub.18 -alkyl and n.sub.1, n.sub.2 and n.sub.3 are 0, 1, 2, or 3, subject to the proviso that the sum of n.sub.1 +n.sub.2 +n.sub.3 is an integer from 1 to 3, and R.sub.2 and R.sub.3 independently of one another are C.sub.2 -C.sub.4 -hydroxyalkyl, and also novel anilinotriazines and the use thereof for stabilizing chlorine-containing polymers against the harmful effects of light and/or heat.

Abstract: A process is provided for the production of a polymer of reduced molecular weight by subjecting, in bulk form, a halogenated butyl polymer having at least 75 percent of the unsaturation in the EXO methylene configuration to mastication in an extruder while exposing the masticated polymer to an atmosphere containing ozone. Such reduced molecular weight polymers have an M.sub.n of from about 10,000 to about 40,000 and may be used in caulks and sealants.

Abstract: The ultraviolet light radiation stability as manifested, for instance, by the resistance to yellowing is improved for polyphenylene ether resins and blends by including a combination of a benzotriazole-based screening-type UV stabilizer and a hindered dipiperidinyl antioxidant-type UV stabilizer. The combination of the two stabilizers exhibits syneristic behavior in the compositions, conferring better resistance to yellowing than can be predicted and expected from the observed effects of each stabilizer alone. Flame retardant embodiments are illustrated.

Abstract: An improvement in curable compositions which comprise a polyglycidyl ether such as the triglycidylether of tris(hydroxyphenyl)methane and a halogenated dihydric phenol such as tetrabromobisphenol A, the improvement being employing as the halogenated dihydric phenol one in which the halogen atoms are meta with respect to the hydroxyl groups such as 2,2',6,6'-tetrabromo-3 ,3',5,5'-tetramethyl-4,4'-biphenol. These compositions can be cured by heating in the presence or absence of a catalyst for reacting epoxy groups with phenolic hydroxyl groups such as 2-methyl imidazole. These compositions are particularly useful in the preparation of electrical laminates.

Abstract: Novel piperidine compounds of the general formula (I) ##STR1## in which m is an integer from 1 to 4, R.sub.1 and R.sub.2 are as defined in claim 1 and at least one 2,2,6,6-tetramethylpiperidinyl group, being present in R.sub.1 or R.sub.2 are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic material, especially for synthetic polymers.

Abstract: A liquid concentrate comprising an oxamide and a 2,2,6,6-tetraalkylpiperidine compound dissolved in an organic solvent is useful for the UV-stabilization of hardenable liquid finishes, particularly automotive finishes.

Abstract: A method of stabilizing an acid cured coating formulation against photo and/or thermal degradation without adverse effect on acid cure is disclosed. The method discloses incorporating a stabilizingly effective amount of a hindered amine light stabilizer (HALS) represented by Formula I: ##STR1## wherein R is a saturated or unsaturated, optionally alkyl- or alkenyl-substituted alkylene or cycloalkylene radical having 2-20 C-atoms and R' is selected from the group consisting of:hydrogen;an alkyl radical having 1-20 C-atoms;an alkenyl radical having 3-5 C-atoms;an aralkyl radical having 7-12 C-atoms;--CH.sub.2 --CH.sub.2 --CN;--CH.sub.2 --COO--alkyl;--CH.sub.2 --CH(CH.sub.3)--COO--alkyl; an acyl radical; and--(CH.sub.2 --CH.sub.2 O).sub.n H, wherein n can be 1-10.Also disclosed is an acid cured coating composition stabilized against photo and/or thermal degradation. The composition comprises: a stabilizingly effective amount of HALS represented by Formula I above.

Abstract: Siliconic compounds, stabilizer for organic polymers, containing in their molecule the aromatic phosphite or phosphonite function and the sterically hindered aminic function, are obtained by making a 2,2,6,6-tetramethyl-piperidinyl-4-oxyalkylene-.gamma.-alkyl-di(alkyloxy)si lane, an aliphatic glycol, an aromatic phosphite, phosphonite or diphosphite and possibly an aliphatic mono-hydroxy alcohol interact with each other.

Abstract: The present invention relates to phthalimide compounds of the formula (I) ##STR1## wherein X denotes H or halogen, for example chlorine or bromine,a and b independently of one another denote 0 or 1 andR denotes a C.sub.1 -C.sub.4 -alkyl radical,which, in combination with alkali metal salts, are suitable as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates, and the preparation of these compounds.

Abstract: Epoxy resins having acceptable pot lives, degrees of reactivity, and physical properties are obtained by the use of curing agent compositions which comprise about 99.6-90% by weight of a hindered aromatic diamine, such as diethyltoluenediamine, and about 0.4-10% by weight of an accelerator complex of boron trifluoride and a cycloaliphatic diamine, such as isophoronediamine.

Abstract: Blocked benzotriazoles of the formula I or II ##STR1## where x is 1 or 2, R.sup.1 in the case of x=1 and in the formula II is an acyl group of the formula --CO--R.sup.5, a sulfonyl group of the formula --SO.sub.2 --R.sup.6, a phosphoryl group of the formula --P(O).sub.r (R.sup.14)(R.sup.15), and in the case of x=2 is --CO-- or a diacyl group of the formula --CO--CO-- or --CO--R.sup.7 --CO--, and R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.14 and R.sup.15 have the meanings defined in claim 1, are crypto light stabilizers which can be activated by short-wave irradiation. Their use in coating materials is of interest in cases in which light stabilizers containing the free OH compounds have disadvantages with regard to their application.

Abstract: The invention provides a liquid coating composition curable at ambient temperature comprising an acetoacetate groups-containing addition polymer having a number average molecular weight of 1000-100,000, a glass transition temperature of 250.degree.-370.degree. K., a hydroxyl number of 0-200 and a content of acetoacetate groups of 3,5-45% by weight, the acetoacetate groups being present as ester of hydroxyalkyl acrylate, hydroxyalkyl methacrylate or allyl alcohol structural units, and a polyamine having primary and/or secondary amino groups and blocked with an aldehyde or ketone. A process for coating a substrate with such composition is also provided.

Abstract: Self-extinguishing polymeric composition based on a polyolefin, especially polypropylene, of improved thermal stability containing an intumescent fire-retardant system comprised of a phosphorus constituent and a carbonaceous nitrogen constituent. The composition contains more particularly, as the phosphorus constituent, a product consisting substantially of(a) 75-99.5 wgt % pulverulent free flowing ammonium polyphosphate of the following general formulaH.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1in which n stands for an integer having an average value of from about 20 to 800 and the ratio of m/n is about 1, and(b) about 0.5-25 wgt % of a water-insoluble, optionally cured artificial resin encapsulating the individual ammonium polyphosphate particles.

Abstract: Novel diazaspirodecanes of the general formula ##STR1## are prepared from known diazaspirodecane compounds and epoxy compounds or by reacting diazaspirodecane-substituted epoxy compounds with alcohols or amines and are excellent light stabilizers for synthetic polymers.