Abstract: Stabilisers of formula I ##STR1## wherein R.sub.1 and R.sub.2 may be C.sub.1 -C.sub.5 alkyl, the substituents R.sub.3 to R.sub.8 may be hydrogen, the variable n may be 1 or 2, and, when n is 1, A may be an alkoxy radical, and, when n is 2, A may be a diamine radical.

Abstract: The invention relates to compounds of the formula I ##STR1## in which n is 1 or 2, A is CH or a nitrogen atom, and the other radicals R.sup.1 to R.sup.25 are as defined in claim 1.The compounds of the formula I can advantageously be employed for stabilizing organic material against the harmful effect of light, oxygen and/or heat.

Abstract: Blends of a selected long chain N,N-dialkylhydroxylamine and selected hindered amines are surprisingly effective in providing processing, long term heat aging and light stability performance and especially gas fade resistance to polypropylene fibers in the absence of a traditionally used phenolic antioxidant.

Abstract: s-Triazine UV absorbers substituted by a benzotriazolyl or benzophenonyl moiety exhibit unexpectedly improved UV absorption characteristics and outstanding efficacy in protecting organic substances from the deleterious effects of actinic radiation as well as good resistance to loss by volatilization during processing of stabilized compositions at elevated temperatures.

Abstract: Ethylenically unsaturated monomers are protected from premature polymerization during manufacture and storage by the incorporation therein of an effective stabilizing amount of a 7-substituted quinone methide compound.

Abstract: The present invention provides a process for preparing a sulphoxonium salt from the corresponding sulphonium salt which comprises oxidising the sulphonium salt using a peracid, under basic conditions, in a solvent other than a ketone.Some of the sulphoxonium salts are new compounds.

Abstract: Soluble and thermally stable benzotriazole UV absorbers typified by those of formula I ##STR1## where R.sub.1 is hydrogen or chloro, R.sub.2 is alkyl or --CH.sub.2 CH.sub.2 COOR.sub.4 where R.sub.4 is hydrogen, alkyl or alkyl substituted with hydroxyl, and R.sub.3 is .alpha.-cumyl, provide excellent light stability protection to electro coat, base coat or clear coat finishes. The new soluble, crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl)-2H-benzotriazole is particularly effective.

Abstract: 1-Hydrocarbyloxy substituted hindered amine compounds which also contain a reactive functional group such as hydroxy, amino, oxirane or carboxyl can be chemically attached to selected polymer substrates by condensation reactions to give polymers containing a chemically-bonded, non-migrating stabilizer having excellent stabilization efficacy for protecting said polymer substrate from the adverse effects of actinic light.

Abstract: A composition comprisinga) an uncross linked black-filled rubber homopolymer, copolymer or terpolymer based on diene monomers, andb) at least one compound of formula (I) ##STR1## wherein n is 1, 2, 3 or 4, R.sub.1 and R.sub.2 are each independently of the other C.sub.1 -C.sub.4 alkyl or C.sub.5 -C.sub.8 cycloalkyl, X is methylene or ethylene and, when n is 1, R.sub.3 is C.sub.1 C.sub.20 alkyl, C.sub.3 -C.sub.20 alkyl which is interrupted by --O-- and/or --S--; C.sub.3 C.sub.20 alkenyl, C.sub.5 C.sub.12 cycloalkyl, C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl; phenyl, C.sub.1 -C.sub.4 alkyl-substituted phenyl; C.sub.7 -C.sub.10 phenylalkyl or C.sub.7 -C.sub.10 phenylalkyl which is substituted in the phenyl moiety by C.sub.1 -C.sub.4 alkyl; when n is 2, R.sub.3 is C.sub.2 -C.sub.10 alkylene, C.sub.4 -C.sub.10 alkylene which is interrupted by --O-- and/or --S--, C.sub.6 -C.sub.12 cycloalkylene or phenylene; when n is 3, R.sub.3 is C.sub.3 -C.sub.8 alkanetriyl and, when n is 4, R.sub.3 is C.

Abstract: When a tetraalkyl orthotitanate transesterification catalyst is used in the preparation of N-oxyl hindered amine esters, the N-oxyl compound is obtained in excellent yield and purity when moderate temperatures (90.degree.-130.degree. C.) and an aliphatic hydrocarbon solvent are used. The N-oxyl compounds are light stabilizers and also inhibitors for preventing the premature polymerization of ethylenically unsaturated monomers.

Abstract: Soluble and thermally stable benzotriazole UV absorbers typified by those of formula I ##STR1## where R.sub.1 is hydrogen or chloro, R.sub.2 is alkyl or --CH.sub.2 CH.sub.2 COOR.sub.4 where R.sub.4 is hydrogen, alkyl or alkyl substituted with hydroxyl, and R.sub.3 is .alpha.-cumyl, provide excellent light stability protection to electro coat, base coat or clear coat finishes. The new soluble, crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl)-2H-benzotriazole is particularly effective.

Abstract: Compounds of the formula (I) ##STR1## in which m and n are numbers from 1 to 50; A is --O-- or >N--R.sub.6 where R.sub.6 is e.g. hydrogen or C.sub.1 -C.sub.18 alkyl; R.sub.1 and R.sub.4, which may be identical or different, are C.sub.1 -C.sub.18 alkyl, phenyl, C.sub.1 -C.sub.8 alkoxy, OH, ONa or OK; R.sub.2 is e.g. C.sub.2 -C.sub.12 alkylene; R.sub.3 is e.g. hydrogen or C.sub.1 -C.sub.8 alkyl; R.sub.5 is e.g. a group of the formula ##STR2## in which R.sub.9 is e.g. 2,2,6,6-tetramethyl-4-piperidyl; A' has one of the meanings of A; p is e.g. 1 and R.sub.10 is e.g. C.sub.2 -C.sub.18 alkylene; X.sub.1 has one of the meanings of R.sub.1 or is a group (R.sub.27).sub.3 SiO-- where R.sub.27 is C.sub.1 -C.sub.18 alkyl; X.sub.2 is hydrogen, Na, K, C.sub.1 -C.sub.8 alkyl or a group (R.sub.27).sub.3 Si-- with R.sub.27 as defined above and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.

Abstract: Tris-aryl-s-triazines which contain from one to three resorcinol derived moieties with at least one of said moieties substituted at the 5-position with an alkyl, phenylalkyl, halogen, thio or sulfonyl group have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.

Abstract: Soluble and thermally stable benzotriazole UV absorbers typified by those of formula I ##STR1## where R.sub.1 is hydrogen or chloro, R.sub.2 is alkyl or --CH.sub.2 CH.sub.2 COOR.sub.4 where R.sub.4 is hydrogen, alkyl or alkyl substituted with hydroxyl, and R.sub.3 is .alpha.-cumyl, provide excellent light stability protection to electro coat, base coat or clear coat finishes. The new soluble, crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl)-2H-benzotriazole is particularly effective.

Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring 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.

Abstract: Compounds of the general formula I ##STR1## in which n is 1, 2 or 3 and in which X is oxygen or sulfur, T has the meaning of --S--, --S--S--, --S--S--, --S--S--S--S--, --S--S--S--S--S--, ##STR2## and Y has the meaning of ##STR3## in which Z has the meaning of --H, --COR.sup.13, --COOR.sup.13 or --CONHR.sup.13, and Q has the meaning of oxygen or --NR.sup.0 --, and R.sup.1, R.sup.2, R.sup.0, R.sup.4 and R.sup.13 are as defined in claim 1, with the proviso that the compound of the formula C.sub.2 H.sub.5 --S--CH.sub.2 CH(OH)--P(OC.sub.2 H.sub.5).sub.2 is excepted.The invention also relates to compositions containing the compounds of the formula I and organic materials, for example functional liquids and, in particular, lubricants.

Abstract: This invention pertains to cross-linked hydrophilic polymeric films, the process of making such films, and their use. The films of this invention are produced by solubilizing a water-soluble polymer with a photosensitive or light degradable catalyst, optionally drying said solution, and exposing the solution to an energy source, particularly light. These films are suitable for use as a carrier for biologically active agents, such as pharmaceuticals, both human and veterinary, insecticides, and fertilizers; as hydrophilic membranes for separation processes; as bandages for wound treatment; as body implants or as coatings for such implants; and as coatings on glass, metal, wood or ceramics.

Abstract: Nitroxyl inhibitors in combination with some oxygen reduce the premature polymerization of vinyl aromatic monomers during the manufacturing processes for such monomers. Even small quantities of air used in combination with the nitroxyl inhibitors result in vastly prolonged inhibition times for said monomers.

Abstract: Nitroxyl inhibitors in combination with some oxygen reduce the premature polymerization of vinyl aromatic monomers during the manufacturing processes for such monomers. Even small quantities of air used in combination with the nitroxyl inhibitors result in vastly prolonged inhibition times for said monomers.

Abstract: Tris-aryl-s-triazines which contain from one to three resorcinol derived moieties with at least one of said moieties substituted at the 5-position with an alkyl, phenylalkyl, halogen, thio or sulfonyl group have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.