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: 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: 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: A stabilizer system for stabilization of polyolefins against light, heat, and oxidative degradation, comprising:(a) a monocarboxylate ester of a polyalkyl-4-piperidinol of the formula: ##STR1## wherein R.sub.1 represents hydrogen, a C.sub.1-5 alkyl group, an allyl or benzyl group, or a C.sub.1-4 acyl group, and R.sub.2 represents a straight or branched chain, saturated or unsaturated C.sub.16-24 aliphatic carboxylic acyl group; and(b) a benzophenone or benzotriazole UV-absorber.

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: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a nitrone moiety are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments. Additionally, the instant compounds present the opportunity for grafting onto preformed polymer backbones.

Abstract: This invention provides cationic emulsions of bituminous binders of the bitumen/polymer type, formed by a dispersion of an organic phase of the binder in an aqueous phase containing a cationic nitrogenous emulsifier and a mineral or organic acid, the acid being in appropriate quantity so that the pH of the aqueous phase is comprised between 3 and 9. The aqueous phase also contains an agent consisting of at least one water-soluble sequestering salt of phosphonic acid, particularly a salt of alkaline metal or of amine of hydroxyalkyl-1,1-diphosphonic acid, and optionally a water-soluble thickening agent. To obtain the emulsions, which are usable for road applications, the emulsifying agent, the sequestering agent and optionally the thickening agent may be used in the form of a premixture containing the agents and called cationic emulsifying system.

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 high clarity polymeric composition which is stable toward sterilizing radiation includes a semicrystalline polyolefin of narrow molecular weight distribution having incorporated therein a liquid mobilizing additive, a radiation stabilizing amount of a hindered amine and a clarifying agent. The invention includes a sterilized article fabricated from the composition and a method to radiation sterilize the article.

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: Reactive stabilizing compounds, able to stabilize organic polymers, contain in their molecule a sterically hindered amino group and a hydrolyzable silyl function.In stabilizing organic polymers, said reactive stabilizing compounds can be hydrolyzed at the silyl function with the formation of silanol groups, which are made to interact in order to form complex resinous stabilizing structures. These latter are added in stabilizing quantities to the polymer to the stabilized.According to one particular embodiment, the hydrolysis at the silyl function and the formation of the resinous structure take place spontaneously within the polymer to be stabilized.According to a further embodiment, the reactive stabilizing compound is added to the polymer after being stably supported on a solid support by reaction with an inorganic solid having surface hydroxyl groups.

Abstract: Sterically hindered cyclic amines which are substituted by a photoactivatable acyl group at the basic nitrogen atom can be deacylated by irradiation with UV light. This is advantageous if the basicity of the amines proves troublesome during application. Examples of such photoactivatable acyl groups are phenylglyoxyl, phenylacetyl or naphthylacetyl groups.

Abstract: Reactive stabilizer compounds, to be used in the stabilization of organic polymers, contain a sterically hindered, N-substituted piperidinic, morpholinic or pyrrolidinic group, and at least a hydrolysable silicic function.Such compounds give rise, by hydrolysis of the silicic function, to complex resinous structures endowed with stabilizing properties.The reactive stabilizer compounds can spontaneously hydrolyse inside the polymer, or they can be stably supported on a solid support, or they can be chemically linked to the polymeric chain to be stabilized.

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 surface-segregatable, melt-extrudable thermoplastic composition suitable for processing by melt extrusion to form a fiber or film having a differential, increasing concentration of an additive from the center of the fiber or film to the surface thereof, which differential, increasing concentration imparts to the surface of the fiber or film at least one desired characteristic which otherwise would not be present, which composition includes at least one thermoplastic polymer and at least one defined additive. During formation of the fiber or film, the additive rapidly segregates in a controllable manner toward the newly-formed surface of the fiber or film, thereby resulting in a controllable differential concentration of the polymeric material, which concentration increases with increasing distance from the center of the fiber or film to its surface. The weight ratio of the polymer to the additive is in the range of from about 1 to about 1,000.

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: The invention provides a composition comprising a resin processable at temperatures upto 160.degree. C. having incorporated therein a flame retardant amount of a salt formed by reaction between dimethyl methyl phosphonate, monomethyl methyl phosphonate or methyl phosphonic acid, and a compound of the general formula (I) ##STR1## in which X is 0 or S; R.sup.1 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH.sub.2 or NH.sub.2, R.sup.2 is H, alkyl with 1 to 4 carbon atoms or alkenyl of up to 4 carbon atoms or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring of up to 6 carbon atoms which may optionally contain another hetero atom and R is H, an alkyl group with 1 to 8 carbon atoms, an aryl group with 6 to 10 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms or a heterocyclic group with up to 9 ring carbon atoms, or, together with R.sup.1 forms an alkylene chain of 3 to 10 carbon atoms, or R is a group NHR.sup.

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: As an outline of the invention of the present inventors, the gist of the present invention resides in the following:A polyester composition comprising:(A) 100 parts by weight of a substantially linear polyester comprising, as the main constituent unit, ethylene terephthalate;(B) 0.05 to 15 parts by weight of a crystallization promotor; and(C) 0.1 to 15 parts by weight of at least one plasticizer selected from the group consisting of (C.sub.1), (C.sub.2), (C.sub.3) and (C.sub.4) which are defined as follows:(C.sub.1) a condensation product of a compound of the formula (I):(HQ-R).sub.2 S (I)wherein two R groups may be the same as or different from each other and represent a hydrocarbon group selected from the group consisting of aliphatic, alicyclic, and aromatic hydrocarbon groups and any combination thereof, and two Q groups may be the same as or different from each other and represent oxygen or sulfur, with an organic compound containing two alcoholic or phenolic hydroxyl groups:(C.sub.

Abstract: Poly-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters of general formula (I) ##STR1## in which A, B, m, n, k, j, R, R.sup.1 and R.sup.2 have the meanings defined in the text, useful as thermal stabilizers for synthetic polymers, in particular for polyvinylchloride-based masses.The compounds of formula (I) are preferably used in combination with the usual stabilizers based on organic metal derivatives. They can also be used combined with agents which exert a synergic action in maintaining a low color of manufactured articles subjected to heating, and in particular with betadicarbonyl compounds of formula (II):R.sup.3 --CO--CH.sub.2 --CO--R.sup.4 (II)in which R.sup.3 and R.sup.4 have the meanings defined in the text, in masses containing organic calcium and zinc salts as basic stabilizers.

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: The present invention relates to olefin polymers stabilized with polysiloxanes containing sterically hindered heterocyclic moieties, said polysiloxanes represented by the general formula M*.sub.v D.sub.x D*.sub.y T.sub.z Q.sub.w M*.sub.v.

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: A compound of formula I ##STR1## in which R.sub.1 is selected from C.sub.9-32 alkyl, C.sub.9-32 alkenyl, C.sub.9-32 alkoxy, --CO--R.sub.4 and --(CH.sub.2).sub.1-6 --COOC.sub.6-18 alkyl, where R.sub.4 is C.sub.8-31 alkyl, C.sub.8-31 alkenyl or C.sub.8-31 alkoxy; the alkyl group of each significance of R.sub.1 being uninterrupted or interrupted by one --O--, --S-- --SO.sub.2 -- group and being unsubstituted or substituted by --N(R.sub.5).sub.2, OH or halogen, where each R.sub.5, independently, is selected from hydrogen, C.sub.1-6 alkyl, C.sub.2-6 alkenyl and C.sub.1-6 alkoxy;R.sub.2 has a significance of R.sub.1 independently, of R.sub.1 or is --COOH hydrogen, hydroxyC.sub.1-6 alkyl, hydroxyC.sub.1-6 alkoxy, --COOC.sub.1-6 alkyl, OCOC.sub.1-6 alkoxy; Cl, Br, I, OH, C.sub.1-8 alkyl, C.sub.1-8 alkoxy or C.sub.2-8 alkenyl; andR.sub.3 is C.sub.1-6 alkyl, Cl, Br, I, OH, COOH, hydroxyC.sub.1-6 alkyl, C.sub.2-6 alkenyl, hydroxyC.sub.1-6 alkoxy, COOC.sub.1-6 alkyl, --OCOC.sub.1-6 alkoxy or C.sub.

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: A compound of formula I ##STR1## in which R to R.sub.5 are organic radicals, for use as a light stabilizer in polymeric systems.

Abstract: A polyolefin composition incorporating in 100 parts by weight of a polyolefin, (A) 0.05 to 1 part by weight of a hindered amine type compound, (B) 0.02 to 1 part by weight of an organic phosphorus type compound, and (C) 0.02 to 0.5 part by weight of hydrotalcite.

Abstract: The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, 0.sup..multidot. NO, cyanomethyl, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.6 alkenyl or C.sub.3 -C.sub.6 alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, benzyl, C.sub.1 -C.sub.7 acyl or OH-monosubstituted C.sub.2 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl, R.sub.3 is a group of the formula (II) ##STR2## with R.sub.6 being as defined for R.sub.1, R.sub.4 is --COOR.sub.3 or --CN and, if n is 1, R.sub.5 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.4 alkyl substituted by C.sub.1 -C.sub.12 alkoxy or di(C.sub.1 -C.sub.6 alkyl)amino, or C.sub.5 -C.sub.12 cycloalkyl unsubstituted or substituted by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl radicals, benzyl, benzyl substituted by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl radicals, or a group of the formula (II), and, if n is 1 and R.sub.4 is --CN, R.sub.

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: A process for the production of a free flowing filled elastomer powder by combining an elastomer latex with a filler suspension is disclosed wherein the combining of elastomer latex and filler suspension takes place in the presence of about 0.1-15 parts by weight--calculated per 100 parts by weight of elastomer solid in the elastomer latex--of a high-molecular-weight amine with quaternary nitrogen functions and with an average molecular weight of about 10.sup.4 to 10.sup.8.

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

Abstract: A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3.A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.

Abstract: A coating composition based on an acrylic resin which is useful for preparing lubricated steel products such as steel sheets or tubes is disclosed. The coating composition contains as additives a rust preventive which is a mixture of a sulfonamidecarboxylic acid and an cyclic amine and a water repellent. It exhibits improved rust-preventing properties when lubricated steel products having a coating film formed from the coating composition are stored for a prolonged period under coiled or stacked conditions.

Abstract: Amic acids, cyclic imides and mixtures thereof which contain both diacyl hydrazide functionalities and hindered amine functionalities are prepared by reacting non-halogenated cyclic anhydrides with hindered amine light stabilizers containing reactive hydrazido funtionalities in inert solvents or in inert polymeric compositions in a melt blending step. The compositions protect polymeric compositions against the degradative effects of heat and light.

Abstract: Compounds which contain peroxide linkages and the radical of a hindered amine light stabilizer group are provided. These compounds function as polymerization initiators which cause the hindered amine stabilizer to be chemically bound to the polymer.

Abstract: Rigid polyvinyl chloride stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of 2,2,6,6-tetraalkylpiperidine compound and an organotin carboxylate thermal stabilizer, optionally with reduced amounts of titanium dioxide, organotin mercapto esters and/or organotin mercaptide thermal stabilizers.

Abstract: Aqueous silicone dispersions containing (a) polydiorganosiloxanes having hydroxyl groups in the terminal units, (b) (organo)metallic compound(s), (c) a siliconate, and optionally, (d) a silicone resin.These aqueous silicone dispersions will cure to form elastomeric coatings or sealants when the water is removed by evaporation.

Abstract: 1,3,2-oxazaphospholidine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants.

Abstract: Compositions of thermoplastic polymers comprising, in mixture, a thermoplastic polymer and a mixture of self-extinguishability-conferring additives, formed by:ammonium phosphate or ammonium polyphosphate: ##STR1## (wherein p is preferably equal to or greater than 50); phosphorus-containing compound definable by means of the general formula: ##STR2## (wherein R.sub.1, R.sub.2 and R.sub.3 have the meaning as indicated in the disclosure).

Abstract: An improved polyolefin pipe or wire and coating composition having improved resistance to deterioration in the presence of chlorinated and nonchlorinated water and having improved resistance to temperatures in the range of about 0.degree. C., as well as in cool water consisting of a blend of:(a) about 93 to about 99.5 percent by weight of an isotactic poly-1-butene polymer;(b) about 0.05 to about 0.50 percent by weight of a hindered amine UV stabilizer;(c) about 0.05 to about 1.1 by weight of a hindered phenolic thermal stabilizer having a molecular weight above 530;(d) about zero to about 0.5 percent by weight of a nucleating agent;(e) about zero to about 4 percent by weight of a pigment;(f) about zero to about 3.0 percent by weight of a filler; and(g) up to about 3.0 percent by weight of a chelating agent.

Abstract: Polycarbonate 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: Dibenzodioxaphosphepin and dibenzodioxaphosphocin derivatives are prepared by reacting selected 2,2'-biphenols with phosphorus trichloride in an organic solvent and then reacting the intermediate formed with a 1,4-dihydroxy-2,2,6,6-tetraalkylpiperidine. The phosphites formed are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilizers for polyolefins, elastomers, polyesters and polycarbonates.

Abstract: A polymer matrix has grown therein in vitro and in situ non-centrosymmetric crystals of organic or inorganic compounds. The crystals are preferably orientated and may be used in electro-optical systems.

Abstract: A polymeric film material for the rinse release of wash additives comprises a blend of polyvinyl alcohol and an alkyl cellulose. A metalloid oxide cross-linking agent is present in an amount sufficient to sharply reduce the solubility rate of the film blend in an alkaline wash, yet allow dissolution in a less alkaline rinse. Optionally, a hydrophobic cationic species is included to further reduce the dissolution rate in the wash pH. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse. The film can be used to microencapsulate an additive, or made into a water-soluble pouch, or as a soluble seal for a pouch or container.

Abstract: Bis-(2,2,6,6-tetramethyl-piperidyl)diimides are provided, having the formula: ##STR1## in which R is selected from the group consisting of hydrogen; oxyl; alkyl and alkenyl having from one to about eighteen carbon atoms; epoxy and hydroxyalkyl having from two to about eight carbon atoms; acyl having from two to about eight carbon atoms; and phenalkyl having from seven to about twelve carbon atoms; and Z is a tetravalent aliphatic or cycloaliphatic hydrocarbon group having from two to about eighteen carbon atoms; and stabilizer and synthetic polymer compositions containing such diimides having improved resistance to deterioration when exposed to light.