Abstract: The present invention relates to selected glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine compounds forming an open chain or cyclic ketal structure, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) a glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine nitroxide initiator compound. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers and the use of glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine nitroxide initiators for radical polymerization.

Abstract: Compounds of the general formula I? in which R1 is H, C1–C12alkyl; C5–C12cycloalkyl; C2–C18alkyl which is interrupted by one or more O; SR4; OR5; or is a group of formula II or III R2, R21 and R3 independently of one another, are H or —Y—T as defined in claim 1, where T is a reactive group selected from OH, acryl- and methacryloxy and arylcarbonate groups, and further symbols are as defined in claim 1, are effective as crosslinking agents for polymeric networks, especially as in flexographic printing plates, coatings, and plastic containers or films. Further provided is a method of protecting the content of a clear or lightly colored plastic container or film against the deleterious effects of ultraviolet radiation, which method comprises permanently and covalently bonding one or more UV absorbing moieties of a durable s-triazine UV absorber via condensation to a suitable polymer component.

Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process, which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.

Abstract: A molding composition which is composed of at least 60% by weight of transparent polyamide, where the molding composition comprises an effective amount of one or more optical brighteners, and where the amount of the optical brightener has been judged in such a way that a) the b value, which is a measure of yellowness, is at most 7, and moreover b) between 370 and 430 nm, at least in a lower part of the range, the transmittance is smaller than 1%, measured at a layer thickness of 4 mm, can be processed to give products which are substantially impermeable to UV light.

Abstract: The present invention relates to a flame retardant polycarbonate thermoplastic resin composition that comprises a polycarbonate resin, a rubber modified vinyl-grafted copolymer, a phosphorous mixture of a cyclic phosphazene oligomer compound and a phosphoric acid ester as a flame retardant, and a fluorinated polyolefin resin.

Abstract: An aerosol solvent weld cement composition for joining ends of plastic pipe. The composition contains at least one polymer capable of welding the plastic pipes to each other, at least one solvent for the polymer, and at least one propellant for the polymer/solvent solution. The composition is maintained under pressure greater than atmospheric pressure in an aerosol container. A female omnidirectional valve is disclosed for use in the aerosol container. This valve allows the solvent weld cement composition to be applied to pipes from any angle.

Abstract: The present invention relates to a multi-component system for making impressions which contains (a) at least one compound having at least two alkenyl groups; (b) at least one organohydrogenpolysiloxane; (c) at least one hydrosilylation catalyst; characterized by containing (d1) at least one polymeric compound having at least one alkynyl group and/or (d2) at least one compound having at least one Si—OR structural unit, wherein R=H, alkyl, alkoxyalkyl or acyl; and when a compound (d2) having at least one Si—OR structural unit is contained, (e) at least one condensation catalyst and/or condensation cross-linking agent. After the mixing of the components, the materials according to the invention cure in two steps.

Abstract: The present invention relates to a synergistic additives mixture for producing calendered polyolefin articles, comprising A) at least one component from the group of peroxide-destroying phosphorus or sulfur compounds, B) at least one component from the group of phenolic antioxidants, C) at least one component from the group of sterically hindered amines, and D) if desired, further additives. Using this additive mixture prevents sticking to the hot roll surfaces and reduces the degradation of the polymer.

Abstract: Aqueous bonding agents based on at least one phenolic resin, at least one aromatic dinitroso compound and a polyvinyl alcohol are suitable as a one-coat aqueous rubber-metal bonding agent to achieve permanent rubber-metal bonds. These bonding agents can be substantially free from organic solvents and halogen compounds, and allow one-coat application without an additional, previous application of a primer.

Abstract: A stabilizer mixture containing (A) a sterically hindered amine compound, and (B) a polymer containing polar residues, the weight ratio of components (A) (B) being 20:1 to 1:20, with the provisos that, (1) component (B) is different from component (A) and does not contain groups of formulae (I) or (II) in which G is hydrogen or methyl, and G1 and G2, independently of one another, are hydrogen, methyl or together are a substituent ?O; and (2) component (B) is different from a polymer having an acidic hydrogen atom.

Abstract: Photochromic compositions are disclosed herein. The compositions comprise mixtures of methacrylate monomers, which when polymerized, provide a polymer matrix that exhibits improved fading characteristics of incorporated photochromic dyes and good photochromic temperature stability. The compositions are particularly useful as a composite layer on polymer-based ophthalmic lenses.

Abstract: Microporous articles formed by thermally induced phase separation from a diluent in combination with a thermoplastic polymer and a fluorochemical additive providing novel fluid repellent articles. Such articles are useful in clothing, barrier membranes, optical films in electronic devices (such as light reflective and dispersive films), and protective garments.

Abstract: A transparent film whose thickness is in the range from 1 to 500 ?m and which comprises, as principal constituent, a crystallizable thermoplastic, wherein the film comprises at least one UV stabilizer as light stabilizer and at least one optical brightener, and to the use of the film, and also to a process for its production.

Abstract: The invention relates to transparent, biaxially oriented and heat-set films having one or more layers and compris, as main constituent, at least one crystallizable thermoplastic, in particular a polyester, and also comprise at least one hydrolysis stabilizer. The hydrolysis stabilizer is preferably a phenolic compound, an oxazoline, and/or a monomeric or polymeric carbodiimide, where appropriate combined with an organic phosphite. It is preferably added in the form of a masterbatch. The film exhibits low longitudinal and transverse shrinkage. On exposure to moisture and heat it shows practically no embrittlement and retains its ultimate tensile strength. The additional functionality is preferably that the film has been made UV-resistant, or flame-retardant, or on one side or on both sides has been coated, or is sealable, and/or has been corona- or flame-treated.

Abstract: Quinophthalone derivatives have the general formula I where R1, R2, R3 and R5 are independently hydrogen, halogen or C1-C4-alkyl; R4 is —SO3H, —SO3+N+R6R7R8R9, —SO2NR6R7, —CH2NR6R7, —CH2R10, —COOH, —COO?N+R6R7R8R9, —COOR11, —COR11, —NO2 or C1-C4-alkyl; R6, R7, R8 and R9 are independently hydrogen; C1-C22-alkyl or C2-C22-alkenyl whose carbon chains may be interrupted by one or more moieties selected from the group consisting of —O—, —S—, —NR12—, —CO— and —SO2— and/or which may each be mono- or polysubstituted by hydroxyl, halogen, aryl, C1-C4-alkoxy and/or acetyl; C3-C8-cycloalkyl whose carbon skeleton may be interrupted by one or more moieties selected from the group consisting of —O—, —S—, —NR12— and —CO— and/or which may be mono- or polysubstituted by hydroxyl, halogen, aryl, C1-C4-alkoxy and/or acetyl; dehydroabietyl or aryl; R6 and R7 or R6, R7 and R8 are together a 5- to 7-membered cyclic radical which includes the nitrogen atom and may include further heteroatoms; R10 is R11 is alkyl R6; R12 is

Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis (carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that whe

Abstract: A marking composition includes a polymerizable first material that comprises silicon and a second material capable of extending polymeric chains of the first material, wherein the marking composition is capable of undergoing a change that can be detected optically when the composition is contacted with energy.

Abstract: A marking composition includes a polymerizable first material that comprises silicon and a second material capable of extending polymeric chains of the first material, wherein the marking composition is capable of undergoing a change that can be detected optically when the composition is contacted with energy.

Abstract: Excellent tracking index as well as flame-resistant properties are achieved with other desirable characteristics of LCPs in a resin composition consisting essentially of: a) a wholly aromatic polyester which is melt processible and which displays anisotropy in the molten state; b) a non-conductive filler material having a diameter of less than about 3 m, with said non-conductive filler material being present in an amount sufficient to increase the comparative tracking index (CTI) rating of said composition to above 220 volts and render the composition non-burning. Optionally, an extraordinarily small amount of non-volatile fluorescent brightener can be added to the resin composition. In combination with the non-conductive filler, the fluorescent brightener is found to surprisingly and significantly improves the flame-retardant property of the resin. Such compositions are advantageously employed in electrical and electronic apparatuses.

Abstract: The present invention relates to a flame retardant polycarbonate thermoplastic resin composition that comprises a polycarbonate resin, a rubber modified vinyl-grafted copolymer, a phosphorous mixture of a cyclic phosphazene oligomer compound and a phosphate ester morpholide compound as a flame retardant, and a fluorinated polyolefin resin, which has good flame retardancy, heat resistance, mechanical strength, impact strength, heat stability, processability, and appearance.

Abstract: A stabilizer mixture containing (I) two different sterically hindered amine compounds, and (II) at least one compound selected from the group consisting of an organic salt of Zn, an inorganic salt of Zn, Zn oxide, Zn hydroxide, an organic salt of Mg, an inorganic salt of Mg, Mg oxide and Mg hydroxide.

Abstract: A polishing composition comprising silica particles, polymer particles and a cationic compound in an aqueous medium; a polishing process for a substrate for a precision part with the polishing composition as defined above; a method for planarization of a substrate for a precision part, including the step of polishing the substrate for a precision part with the polishing composition as defined above; and a method for planarization of a substrate for a precision part, including the steps of polishing the substrate for a precision part with the polishing composition as defined above, the polishing composition being a first polishing composition, with applying a polishing load of 50 to 1000 hPa, and polishing the substrate after the first step with a second polishing composition comprising silica particles in an aqueous medium with applying a polishing load of 50 to 1000 hPa.

Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process, which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.

Abstract: An epoxy resin composition comprising an epoxy resin, a phenolic resin curing agent, an inorganic filler, zinc molybdate on an inorganic support, and a complementary combination of two phosphazene compounds is effectively moldable, flame retardant and suitable for semiconductor encapsulation. A semiconductor device encapsulated with the cured epoxy resin composition is improved in flame retardance and moisture-proof reliability.

Abstract: The process comprises: (1) the preparation of a mixture comprising at least one organic monomer Z with a C═C group, polymerizable by a radical process, at least one organic photochromic compound, at least one surfactant, water and optionally a polymerization primer; (2) the treatment of the mixture obtained in step (1) in order to form a miniemulsion consisting of an organic phase dispersed in the form of droplets having a diameter of 50 to 500 nm, and preferably 50 to 300 nm, in an aqueous phase; (3) the addition to the miniemulsion of a polymerization primer, if this latter was not introduced in step (1), or of a quantity of primer additional to that added in step (1); (4) the polymerization of the reaction mixture obtained in step (3), and (5) the recovery of the photochromic latex.

Abstract: A golf ball comprising a core, a cover, and optionally an intermediate layer between the core and the cover, wherein a stable free radical is incorporated into at least one portion of the core, the cover, and the optional intermediate layer.

Abstract: 0.3-5.0 parts by weight of phenol resin, sulfur, and vulcanizing accelerator are added to 100 parts by weight of EPDM rubber. They are kneaded, and the EPDM rubber is vulcanized and molded. Generation of blooming can be suppressed without inhibiting the vulcanizing speed and the vulcanizing start timing.

Abstract: The invention concerns a stabilising composition for halogenated polymer comprising at least a compound of formulae (I) and/or (II), wherein: X, Y, Z, identical or different, represent an oxygen atom, a nitrogen atom, a sulphur atom, or a phosphorus atom; R1 represents a radical comprising 1 to 20 carbon atoms; R2 represents a hydrogen atom, a radical comprising 1 to 20 carbon atoms, a —COR radical; R1 and R2 are optionally mutually bound so as to form a cycle; R3 and R4, identical or different, represent a hydrogen atom, a radical comprising 1 to 20 carbon atoms; n=1 depending on the valence of X, m=0 to 2 depending on the valence of Y; p=0 to 2 depending on the valence of Z; q is an integer between 1 and 10, preferably between 1 and 4.

Abstract: The invention relates to novel cyclic and open-chain hydroxylamine esters and polymerizable compositions comprising these hydroxylamine esters and an ethylenically unsaturated monomer or oligomer. The invention also relates to use as polymerization initiators and to the use of known hydroxylamine esters selected from the group consisting of HALS compounds and the novel hydroxylamine esters for the controlled degradation of polypropylene and for achieving a controlled increase in the molecular weight of polyethylene.

Abstract: The present invention provides an epoxy resin composition for encapsulation of semiconductors which contains substantially neither halogen-based flame retarding agents nor antimony compounds and is excellent in moldability, flame retardance, high-temperature storage characteristics, reliability for moisture resistance, and solder cracking resistance. That is, the present invention is an epoxy resin composition for encapsulating semiconductors which contains (A) an epoxy resin, (B) a phenolic resin, (C) a curing accelerator, (D) an inorganic filler and (E) a phosphazene compound as essential components, the total weight of phosphate ion and phosphite ion contained in the phosphazene compound being not more than 500 ppm. Further, the epoxy resin composition may optionally contain a flame-retarding assistant or an ion scavenger.

Abstract: A pressurized aerosol solvent cement product and a method of using the same is disclosed. The aerosol solvent cement product includes an aerosol solvent cement composition disposed in a container. The aerosol solvent cement composition includes tetrahydrofuran, a thermoplastic resin soluble in tetrahydrofuran, a propellant, and a stabilizing composition.

Abstract: A stabilizer mixture containing

Abstract: The bondability of a polyolefin, particularly to cyanoacrylate adhesives, is improved by incorporating in the polyolefin a polymerization initiator capable of initiating the polymerization of the monomers constituting the cyanoacrylate adhesive. The polymerization initiator may, for example, be a sterically hindered nitrogen base and may be mixed with the polyolefin at a temperature above the polyolefin's glass transition temperature using, for example, co-extrusion or co-injection methods.

Abstract: The present invention relates to benzoxazinone compounds having a yellow index less than about 0, and a sodium concentration less than about 50 ppm. This invention also relates to a process for preparing these compounds comprising the step of reacting an isatoic anhydride with approximately stoichiometric amounts of an acylating compound, where the isatoic anhydride is purified by re-crystallization or other purification methods.

Abstract: The invention relates to a mixture for stabilizing polyolefins against damage caused by light, which mixtures contain: (A) a hindered amine light stabilizer; (B) an oxide, hydroxide or organic salt of zinc or magnesium; and (C) a pigment and/or a UV absorber.

Abstract: Colorants comprising a chromophore having two methine moieties attached to a benzodifuranone backbone, wherein said moieties optionally have at least one poly(oxyalkylene) chain, preferably at least two such chains attached thereto are provided. Such colorants exhibit excellent thermal stability, effective colorations, excellent low extraction rates, and effective lightfastness levels, particularly when incorporated within certain media and/or on the surface of certain substrates, particularly polyesters. The optional poly(oxyalkylene) chains also increase the solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or on diverse substrates as well as provides a liquid colorant which facilitates handling. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants.

Abstract: The antifouling composition of the present invention includes a glassy matrix formed by crosslinking a mixture of a silanol-terminated silicone and an alkoxy functionalized siloxane to provide an interpenetrating polymer network of glass and silicone and at least two materials capable of microphase separation, at least one of which is graftable to the glassy matrix.

Abstract: The present invention provides additive packages for polyolefins The additive packages of the present invention comprise at least one non-phenolic antioxidant and a hindered amine light stabilizer. The additive packages may contain other additives as needed, and may optionally include an acid scavenger. Articles made from the resultant polymers, such as radiator surge tanks, exhibit enhanced stain and discoloration resistance upon exposure to high temperatures and harsh chemicals such as those experienced in “under the hood” spaces of modem automobiles.

Abstract: An object of this invention is to impart excellent flame retardancy to an aromatic polyamide resin without use of a halogen compound which is responsible for generation of gases harmful to the human body and without decreasing preferred properties (e.g. mechanical properties, and molding processability) inherently possessed by aromatic polyamide resins, the flame-retardant aromatic polyamide resin composition of this invention comprising (a) 100 parts by weight of an aromatic polyamide resin, (b) 0.1 to 100 parts by weight of a crosslinked phosphazene compound which is a compound crosslinked with a crosslinking group, such as phenylene groups, the crosslinking group being interposed between the two oxygen atoms left after the elimination of phenyl groups from the phosphazene compound, no free hydroxyl group being present in the molecule, the amount of all phenyl groups in the crosslinked compound being 50 to 99.

Abstract: Optical disc adhesives and lacquers comprising components that undergo free-radical polymerization when exposed to radiation and a cure-enhancing amount of R-SH, wherein R is a heterocycle; cationic, free-radical, and hybrid adhesives for digital versatile discs (DVD) comprising components that undergo cationic and/or free-radical polymerization when exposed to radiation and a corrosion-inhibiting amount of R-SH, R1-R2 and/or an acyclic thiol, wherein R is a heterocycle, R1 is a substituted or unsubstituted phenyl as a substituent of R2 or forming with R2 a bicyclic structure, and R2 is a heterocycle comprising at least one double bond and at least two N atoms; and optical media, e.g., CD-DA, CD-ROM, CD-R, DVD, and the like, that include one, or a combination, of the foregoing inventive adhesive or lacquer compositions.

Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affect the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.

Abstract: Novel photochromic diarylethenes substituted with an isoxazole group and the method of preparation are disclosed. Also disclosed are compositions made with the photochromic diarylethenes. The preparation of thin films with the photochromic diarylethenes or compositions thereof are disclosed. The photochromic diarylethenes or compositions thereof may be used, for example in recording materials, photochromic windows, indicating elements, plastic mirrors, photochromic filters, photo switches, photosensitive drums, recording elements, solar cells, lens, fibers and optical elements.

Abstract: A product obtainable by 1) reacting a compound of the formula (&agr;) with a compound of the formula (&bgr;) in a molar ratio of 1.2:1 to 1.4:1; 2) reacting the end groups of the formula (&ggr;) being present in the product of the reaction 1) with e.g. dibutylamine in a molar ratio of 2:1.7 to 2:3; the reactions 1) and 2) being carried out in an organic solvent in the presence of an inorganic base; and 3) transferring the groups of the formula being present in the product of the reaction 2) to groups of the formula said transfer being carried out by reacting the product of the reaction 2) with a hydroperoxide in a hydrocarbon solvent in the presence of a peroxide decomposing catalyst. The products obtained are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers such as polyolefins.

Abstract: A blend of optical brighteners includes (a) from about 45 to 95 weight % of a mixture of benzoxazolyl stilbenes; and (b) from about 55 to about 5 weight % of at least one bis(benzoxazolyl)naphthalene based brightener, bis(benzoxazolyl)thiophene based brightener, a pyrazoline based brightener, a coumarin based brightener, and mixtures thereof, wherein the weight percents of the optical brightener blend are based on the total weight of optical brighteners in the blend. The optical brightener blend is useful for admixing with a polyolefin resin which in turn may be used for photo imaging applications.

Abstract: The antifouling composition of the present invention includes a glassy matrix formed by crosslinking a mixture of a silanol-terminated silicone and an alkoxy-functionalized siloxane to provide an interpenetrating polymer network of glass and silicone and at least two materials capable of microphase separation, at least one of which is graftable to the glassy matrix. A primer composition is also provided and is a mixture of an epoxy, an alkoxy-functionalized siloxane and a silane capable of compatabilizing the epoxy and the alkoxy-functionalized siloxane; a glassy matrix formed by crosslinking a mixture of a silanol-terminated silicone and an alkoxy-functionalized siloxane.

Abstract: A new formulation for producing nitrile gloves has been developed. The resulting glove shows following outstanding characteristics: stress at six minutes greater than 50% of its initial value; ultimate tensile strength and elongation well above ASTM requirements; and much lower modulus than almost all the nitrile gloves currently commercially available. The unique formulation is zinc oxide free and is vulcanized from 5 to 60 minutes at temperatures ranging from 300° F to 400° F.

Abstract: The present invention provides a methyl methacrylate resin composition exhibiting superior durability without impairing the transparency inherent to a methyl methacrylate resin, which comprises a methyl methacrylate resin and a 2-(1-arylalkylidene)malonic acid ester in an amount of 0.0005 to 0.1 parts by weight per 100 parts by weight of the methyl methacrylate resin.

Abstract: The present invention relates to novel compounds of the formula (III) in which the substituents are as defined in the description, to a process for their preparation and to mixtures with other compounds. The compounds of the formula (III) are suitable for stabilizing organic material against the effect of light and heat.

Abstract: The present invention, therefore, relates to a method for preparing a thermoplastic elastomer, said method comprising: (I) mixing (A) a thermoplastic resin comprising more than 50 percent by volume of a polyester resin other than poly(butylene terephthalate), said thermoplastic resin having a softening point of 23° C. to 300° C., (B) a silicone elastomer comprising (B′) 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and, optionally, (B″) up to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone elastomer (B) to said thermoplastic resin (A) being greater than 35:65 to 85:15, (C) 0.

Abstract: A synergistic stabilizer mixture comprising a component a) and, for example, a component b), where component a) is at least one compound of the formula I in which R1 is C1-C10alkyl, C5-C12cycloalkyl, C1-C4alkyl-substituted C5-C12cycloalkyl, phenyl or C1-C10alkyl-substituted phenyl, R2 is C3-C10alkylene, R3 is hydrogen, C1-C8alkyl, O, —CH2CN, C3-C6alkenyl, C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by C1-C4alkyl; or C1-C8acyl, and n1 is a number from 1 to 50, and component b) another HALS compound.