Abstract: A synthetic resin composition stabilized particularly against the deterioration caused by the action of heat and light, which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic phosphite compound represented by the following general formula (I) and 0.001 to 10 parts by weight of a hindered amine compound having a group represented by the following general formula (II) in its molecule: ##STR1## wherein R.sub.1 stands for a tert-butyl or tert-amyl group; R.sub.2 stands for a C.sub.1.about.9 alkyl group; R.sub.3 stands for a hydrogen atom or a C.sub.1.about.4 alkyl group and R.sub.4 stands for a C.sub.1.about.30 alkyl group.

Abstract: The invention relates to the stabilization of organic polymers against degradation by light by the addition of (a) a light stabilizer of the formula ##STR1## in which R is hydrogen or methyl and A is an alkylene radical, and (b) an oxide, hydroxide, carboxylate, enolate or phenate of magnesium or zinc.

Abstract: An aqueous dispersion comprising one or more 2,2,6,6-tetraalkylpiperidine compounds having a molecular weight 2000 or less than 2000 and a melting point of 100.degree. C. or more, one or more cationic, non-ionic and/or anionic dispersing agents and an aqueous medium. These dispersions are suitable for use as light stabilizers in aqueous systems.

Abstract: Di-(2,2,6,6-tetramethyl-4-piperidinyl) succinate and glutarate are very effective light stabilizers for thermoplastics, particularly for polyolefins.

Abstract: The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, O.multidot., OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.8 -alkyl, allyl, benzyl, hydroxyalkyl, alkoxy, cycloalkoxy or acyl, R.sub.2 is alkyl, cycloalkyl, phenylalkyl, alkoxyalkyl, tetrahydrofurfuryl or a group of the formula (II) and A is a monovalent or divalent moiety, in which R.sub.1 is as defined above, and, if n=1, A is a group of the formula (III) in which each R.sub.9 independently is hydrogen or methyl, r is zero or 1 and are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.

Abstract: A cycloaliphatic epoxy compound in combination with a 2-hydroxy-substituted benzophenone compound and a polyalkyl-substituted dipiperidine compound provides a UV stabilizer that exhibits synergistic behavior. The compounds can be formulated into a composition that is coated on, or impregnated into, the surface of a plastic article or, alternatively, they can be incorporated into a thermoplastic composition which can be thereafter molded into a shaped article. The stabilizer combination succeeds in upgrading the resistance of polyphenylene ether resins and blends against the photo-deteriorative effects of sunlight and bright indoor light, for example, fluorescent lighting.

Abstract: 1-Hydrocarbyloxy hindered amine mercaptoacid esters, thioacetals, sulfides and disulfides are effective light stabilizers for protecting a variety of polymer substrates from the deleterious effects of actinic light.

Abstract: A composition comprising (A) (i) a crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer comprising alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has more than two reactive sites; or (ii) a crosslinked or crosslinkable linear poly(organohydrosiloxane) polymer having a least 30% of its .tbd.SiH groups reacted to hydrocarbon residues derived from polycyclic polyenes having at least two carbon-carbon double bonds in their rings; and (B) as an antioxidant, a compound comprised of at least one hindered phenol and at least one hindered amine; and the process of making the same, are disclosed.

Abstract: Compounds containing both a UV-absorbing moiety and a 1-hydrocarbyloxy hindered amine moiety are effective stabilizers for protecting polymer compositions against the deleterious effects of actinic light. The UV-absorbing moieties include the substituted 2H-benzotriazoles, s-triazines, acrylates, benzophenones, oxanilides and oxamides.

Abstract: Synergistic light stabilizer combinations comprising(a) a compound of formula I ##STR1## wherein m is 2 or 3 and R is hydrogen, C.sub.1 -C.sub.4 alkyl, 2-hydroxyethyl, 2-hydroxypropyl, allyl, benzyl, acetyl or acryloyl, and(B) a compound which contains at least one group of formula II ##STR2## and has a molecular weight higher than 700, are most suitable for stabilizing organic polymers, especially polyolefins.

Abstract: Compounds which contain azo linkages as well as a hindered amine light stabilizer moiety of low basicity function as free radical polymerization initiators and provide a polymer containing a hindered amine stabilizer chemically bonded to said polymer. The low basicity of the instant compounds prevents interaction with acid catalysts used in some polymerization systems.

Abstract: N-Hydrocarbyloxy derivatives of phosphorus substituted 4-amino- and 4-hydroxy-2,2,6,6-tetramethylpiperidine are effective light stabilizers for polymer compositions. These phosphorus compounds include phosphites and cyclic phosphites such as 1,3,2-dioxaphospholanes, 1,3,2-dioxaphosphorinanes, 1,3,2-oxazaphospholidines, 1,3,2-diazaphospholidines, 1,3,2-dioxaphosphocins, 1,3,2-dioxaphosphepins and 2,4,8,10-tertraoxa-3,9-diphosphaspiro[5,5]-undecanes.

Abstract: Polysubstituted N-hydrocarbyloxy hindered amines are effective light stabilizers in protecting organic substrates against the deleterious effects of actinic light.

Abstract: The Michael addition products of N-hydroxy hindered amines with alpha,beta-unsaturated carbonyl compounds including derivatives of esters, amids, imides and anhydrides are effective stabilizers for protecting organic polymers from the deleterious effects of actinic light.

Abstract: Oligomeric N-hydrocarbyloxy hindered amines are effective light stabilizers in protecting organic substrates against the deleterious effects of actinic light.

Abstract: N-hydroxy-substituted hindered amine light stabilizers impart outstanding stabilization properties to ambient cured coatings based on a variety of resins, the stabilized coatings exhibiting improved durability, weatherability, and the like.

Abstract: A polypropylene composition which demonstrates good color stability and water carry-over properties comprises polypropylene containing a hindered amine light stabilizer and about 0.01 to about 0.5 wt. % of a fluoborate salt. Ammonium fluoborate, sodium fluoborate and potassium fluoborate are particularly useful.

Abstract: Hindered amines based on various 2,2,6,6-tetralkylated nitrogen-containing heterocyclic moieties wherein the hindered nitrogen atom on the ring is substituted with OH or OR substituents and the 4-position of the ring is substituted with a diversity of substituents are effective in protecting a variety of non-polyolefin substrates against the adverse effects of light, heat and oxygen.

Abstract: A polyoxymethylene composition which exhibits improved stability against the degradative effects of ultraviolet light includes a triazine-based antioxidant and UV stabilizers. One preferred composition of the invention includes, based upon the total weight of the composition, an oxymethylene copolymer, between 0.015 to about 0.4 weight percent of 2,4,6-triamino-sym-triazine (as a formaldehyde scavenger), between about 0.25 to about 1.0 weight percent of each of 2-2(hydroxy-5-t-octylphenyl) benzotriazole, and bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate as UV light stabilizers, and between about 0.25 to about 1.0 weight percent of 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris(2-hydroxy-ethyl)-s-triazine-2,4,6-(1H, 3H, 5H)-trione as an antioxidant. Due to their enchanced UV-light stability property, the compositions of the invention find particular utility as molded automobile components.

Abstract: The thermal oxidative stability of polyketones is improved by the addition of a dihydrocarbyldithiocarbamate salt of a metal selected from Group IIIB through Group VA or a mixture thereof.

Abstract: N-(2,2,6,6-tetraalkyl-4-piperidinyl)amide-hydrazides of dicarboxylic acids contain a light stabilizing group, a heat stabilizing group, and a reactive hydrazide functionality in the same molecule. The reactive stabilizers are prepared by reacting 4-amino-2,2,6,6-tetraalkylpiperidines with diesters (or mono ester acid chlorides) of dicarboxylic acids or dialkyl itaconates followed by hydrazinolysis of the ester group of the intermediate mono esteramide. The compounds are useful for introducing permanent heat and light stability to coreactive polymers or copolymers. They are also useful in the stabilization of inert polymeric systems against the degradative effects of heat and light when merely mixed with, rather than reacted with, the polymers for which stabilization is sought.

Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.

Abstract: Thermally stable olefin polymers are obtained by addition, before or during polymerization, or after polymerization is substantially complete, but before quenching the catalyst, which terminates the polymerization reaction, of stabilizers of the HALS type ("Hindered Amine Light Stabilizer") of monomeric or oligomeric type, containing in the molecule one or more substituted piperidyl groups having formula: ##STR1## wherein R1 are the same or different from each other and are C.sub.1 -C.sub.4 alkyl radicals, tetramethylpiperidyl radicals, or the alkyl radicals, together with the piperidyl carbon atom to which they are bonded, form a C.sub.5 -C.sub.9 cycloalkyl radical; R.sub.2 are the same or different from each other and are hydrogen, C.sub.1 -C.sub.18 alkyl radicals, C.sub.7 -C.sub.18 aralkyl radicals, or said alkyl radicals together with the piperidyl carbon atom to which they are bonded, are a C.sub.5 -C.sub.10 cycloalkyl radical; R.sub.3 are the same or different from each other and are hydrogen, C.sub.

Abstract: A stabilized synthetic resin composition obtained by adding (1) 0.01 to 5 parts by weight of at least one monopiperidine compound represented by the following general formula (I): ##STR1## wherein R.sub.1 represents an alkyl group, an oxyl group or an acyl group, andR.sub.2 represents an aliphatic monoacyl group carrying 12 to 30 carbon atoms,and (2) 0.001 to 5 parts by weight of at least one polypiperidine compound having two or more tetramethylpiperidine groups represented by the following general formula (II) per molecule: ##STR2## to 100 parts by weight of a synthetic resin.

Abstract: Polyvinyl chloride resin stabilizer compositions are provided, comprising a 2,2,6,6-tetramethyl piperidinyl compound and an ammonium or metal perchlorate; and also stabilized polyvinyl chloride resin compositions containing such stabilizers, and optionally including a plasticizer, and particularly as molded articles with polyurethane foam backing.

Abstract: A resin composition, being useful for coating on electric wire, comprises an aromatic polyester, a halogenated compound such as diol, diglycidyl and dicarboxylic acid and a di-heterocyclic compound.

Abstract: A polyurethane material for decorative parts is disclosed which is a tow-liquid type material comprising a polyol component and an isocyanate component and having a stabilizer incorporated in the polyol component. The stabilizer is a ternary system of a specific hindered amine type ultraviolet stabilizer, a specific hindered phenol type antioxidant, and a specific benzotriazole type ultraviolet absorbent or acrylontrile type ultraviolet absorbent. A transparent synthetic resin part formed by potting this polyurethane material on the upper surface of a base excels in weatherability and lightfastness. Thus, the present invention provides decorative parts which retain good appearance for a long time.

Abstract: The invention relates to polyolefines stabilized against damage caused by light and containing(A) at least one polyalkylpiperidine light stabilizer,(B) an organic salt of zinc or magnesium and(C) either(C.sub.1) a UV absorber or(C.sub.2) a pigment or(C.sub.3) a UV absorber and a pigment.

Abstract: A mixture for stabilizing polyurethanes contains(a) an amine of the formula I ##STR1## (b) a mixture of the benzotriazoles II and III ##STR2## in which n is chosen so that the mean molecular weight of the mixture is greater than 600, and(c) .alpha.-tocopherol, if necessary mixed with tris-(nonylphenyl) phosphite, and polyurethanes contain from 0.005 to 5.0% by weight, based on the material to be stabilized, of this mixture.

Abstract: UV-curable urethane-acrylate resin systems of improved thermal stability in the cured state are provided, the resins being of polyurethane acrylate, polyurea acrylate, and/or polyurethane/polyurea acrylate composition and being thermally stabilized by the addition of a combination of stabilizers which includes a hindered piperidine derivative and a hindered phenol derivative. The stabilized resin systems, useful for example for the protective coating of glass optical fibers, retain their rapid UV curing characteristics.

Abstract: both R.sub.1 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;both R.sub.2 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;R.sub.3 has a significance of R, independently of R, except for oxygen;X is --O--, --NH-- or ##STR2## m is an integer from 1 to 4 inclusive; R.sub.4 is a saturated or unsaturated aliphatic group unsubstituted or substituted by one or two groups selected from --OH and C.sub.1-4 alkoxy and which can be interrupted by an oxygen or sulphur atom; or an aromatic group unsubstituted or substituted by one or two groups selected from --OH, C.sub.1-4 alkyl and C.sub.1-4 alkoxy are useful as U.V. light stabilizers in polymeric organic compounds.

Abstract: Compounds are provided which are useful as light stabilizers for polymeric materials and which have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are organic radicals, R.sub.3 and R.sub.15 are hydrogen or organic radicals and R is hydrogen, oxygen or an organic radical.

Abstract: There is disclosed the use of microencapsulated antidegradants in rubber and a process for the production of microencapsulated antidegradants. More specifically, this invention is directed to the cellulose acetate microencapsulation of para-phenylene diamine based antiozonants at wall to core ratios greater than 1:1 but less than 4:1. The microcapsules preferably have a particle diameter of less than 50 microns. The microencapsulated antidegradant prepared and used according to this invention provides long term protection to rubber articles that are subject to ozone and oxygen attack.

Abstract: Light-stabilized polymer microparticles, which contain at least one light stabilizer and free epoxy groups, and processes for the preparation of these microparticles by polymerization of suitable monomers, at least one of these monomers being an epoxide which contains at least one further reactive group, and at least part of the polymerization being carried out in the presence of at least one light stabilizer, are described. The polymer microparticles can be used in coating compositions which comprise a disperse phase, containing these particles, and a liquid continuous phase.Coatings and paints based on the compositions according to the invention are distinguished by improved weathering resistance, in particular high light stability.

Abstract: An ethylene-.alpha.-olefin vulcanized rubber composition with excellent weather resistance and high transparency which is formed by vulcanizing with an organic peroxide an unvulcanized rubber composition comprising an ethylene-.alpha.-olefin rubber containing no metal oxide nor metal carbonate.

Abstract: This invention relates to a method and composition for inhibiting discoloration of the emulsions due to contact with ferrous materials. The invention comprises adding from 0.1 to 1.6 wt. %, preferably, from 0.3 to 0.9 wt. % based on the oil phase of the emulsion of one or more members of the group consisting of phosphoric acid and disodium phosphate. The invention also optionally comprises an amount of pit corrosion inhibitor selected from the group consisting of zinc pyrithione and a zinc containing siloxane resin. The invention also includes the composition of a silicone polymer in water emulsion, wherein the emulsion contains form 0.1 to 1.6 wt%, preferably, from 0.3 to 0.9 wt. % based on the oil phase of the emulsion of one or more mebers of the group consisting of phosphoric acid and disodium phosphate and optionally comprises an amount of pit corrosion inhibitor.

Abstract: Disclosed is a high energy radiation resistant, polypropylene composition. It consists essentially of substantially crystalline normally solid polypropylene having a narrow molecular weight distribution, and, dispersed therein at a concentration effective to increase substantially the high energy radiation resistance of the polypropylene, a synergistic mixture of:(1) a hindered amine component,(2) a hindered phenolic component, and(3) a phosphorous containing component,the weight ratios of component (1) to component (2) to component (3) being about 1:(0.1-2):(0.1-2).Also disclosed are radiation sterilized articles in which at least part of the material of construction comprises the polypropylene composition.

Abstract: Light-stabilized star polymer microparticles are described which are prepared with particular advantage by group transfer polymerization. The light stabilization is effected by carrying out at least a part step of the polymerization in the presence of a light stabilizer, for example a hindered amine or/and a UV absorber. With particular advantage, those light stabilizers are used which contain reactive groups in the molecule and, in this way, can be chemically incorporated into the polymer. The polymer microparticles show excellent light stability and are outstandingly suitable as constituents in coating compositions which can be processed, for example, to give coating films of high light stability.

Abstract: Long chain N,N-dialkylhydroxylamines represent particularly valuable process stabilizers for polyolefin compositions. The hydroxylamine derived from di(hydrogenated tallow)amine is particularly useful for this purpose. These long chain N,N-dialkylhydroxylamines are very resistant to extraction from polyolefin compositions.

Abstract: A compound of formula I ##STR1## in which R, R.sub.1, R.sub.10 and R.sub.11 are organic radicals. These compounds are suitable as U.V. absorbers.

Abstract: Polyphenylene sulfide resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol) having the formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;R.sub.2 is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; andX is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.

Abstract: N-(polyalkyl-4-piperidinyl)imide containing polymer is prepared by blending together a mixture of a polymer containing anhydride functions and a 4-amino-polyalkylpiperidine or its 1-alkyl or 1-acyl derivatives and heating said materials in the blend, either prior to or during the blending step to the molten stage of the polymer; thereafter, heating said blend above 180.degree. C. for a sufficient time to form the product. All volatile by-products are removed either simultaneously or subsequently with the above 180.degree. C. heating step.

Abstract: The present invention relates to a stabilizer system containing two high-molecular polyalkylpiperidines, the use thereof for stabilizing organic material and the organic material which has been protected by means of the stabilizer system mentioned against degradation induced by light.

Abstract: A polyoxymethylene composition comprises an antioxidant of 0.05 to 5% by weight and a basic compound containing at least one tertiary nitrogen atom and a metallic salt of carboxylic acid in the same one molecule of 0.01 to 2% by weight based on polyoxymethylene.

Abstract: Acetal esters and amides possessing the polyalkyl piperidin-4-yl moiety are useful light stabilizers with synthetic polymer resins such as polyolefins and, in particular, polypropylene.

Abstract: A cycloaliphatic epoxy compound in combination with a 2-hydroxy-substituted benzophenone compound and a polyalkyl-substituted dipiperidine compound provides a UV stabilizer that exhibits synergistic behavior. The compounds can be formulated into a composition that is coated on, or impregnated into, the surface of a plastic article or, alternatively, they can be incorporated into a thermoplastic composition which can be thereafter molded into a shaped article. The stabilizer combination succeeds in upgrading the resistance of polyphenylene ether resins and blends against the photo-deteriorative effects of sunlight and bright indoor light, for example, fluorescent lighting.

Abstract: Compositions are described which are useful for stabilizing organic materials normally subject to deterioration caused by ultraviolet light. The compositions comprise mixtures comprising(A) at least one hindered amine light stabilizer,(B) at least one formation characterized by the Formulae I and II as defined more fully in the specification and claims, and(c) at least one hindered phenolic antioxidant compound.In addition to the above components, the compositions of the present invention also may contain at least one pigment normally used in the polymer materials. When organic materials normally subject to deterioration caused by ultraviolet light are modified to include an ultraviolet stabilizing effective amount of the compositions of the invention, the organic materials exhibit improved resistance to ultraviolet light degradation which generally is evidenced by improved color and gloss retention.

Abstract: The ultraviolet light stability of polyphenylene ether resins and blends is improved by the addition of small amounts of certain 2-hydroxy-4-hydroxylated alkyl ether benzophenones and hindered amines in combination. The benzophenones are specifically characterized by an alkoxy substituent which contains one or more pendent hydroxy groups. Comparison with the closest prior art shows better UV performance. Plasticized, flame retardant and filled versions are also disclosed.

Abstract: 1-Hydroxy-2,2,6,6,-tetraalkylpiperidine derivatives are effective as light stabilizers in a variety of substrate systems.

Abstract: Stabilized compositions based on alpha-olefin polymers stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulphur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.