Abstract: A mixture containing two different compounds of the formula (I) ##STR1## wherein n is an integer from 2 to 22 and R is hydrogen, C.sub.1 -C.sub.8 alkyl, --O.multidot., --OH, --NO, --CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.8 acyl or C.sub.7 -C.sub.9 phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl; the weight ratio of the two compounds being 1:20 to 20:1, is useful as stabilizer for organic materials against degradation induced by light, heat or oxidation.

Abstract: The invention relates to a PVC composition comprising a stabilizer combination of (b) polyDHP of the formula I ##STR1## where the radicals T, L, R, R', R" are as defined in claim 1, (c) a substance from the group consisting ofcrystalline hydrotalcites,crystalline or amorphous zeolites,crystalline or amorphous dawsonites, magadiites or kenyaites, disaccharide alcohols andsterically hindered amines containing the structural unit ##STR2## in which R.degree. is hydrogen or methyl, and (d) at least one zinc, aluminium or lanthanoid compound.

Abstract: A polymeric composition in which (D) a phenol antioxidant having a specific skeleton 5-t-butyl-3-methyl-4-hydroxyphenyl, (C) a hindered amine photostabilizer having a molecular weight of not less than 400, and (D) a specific phosphorus compound dihydrooxaphosphaphenanthrene are included in (A) a polymeric compound. This polymeric composition is excellent in thermal oxidation degradation resistance and discoloration of coloring resistance in contacting with a combustion gas or the like.

Abstract: A vulcanizable rubber composition containing a high imino alkylated triazine resin additive for improved tire cord adhesion, sidewall reinforcement and/or rubber toughness without the use of resorcinol or resorcinol equivalent coreactants is described.

Abstract: The invention relates to stabilized recycled plastics, which can be obtained from domestic, commercial and industrial waste or valuable material collections, comprising a macrocyclic compounds containing a radical of formula (I) or (II), in the macrocycle or in a side group of the macrocycle, where the macrocycle comprises at least 8 atoms and in which the substituents R, independently of one another, are methyl, ethyl or propyl, or two radicals R on the same carbon atom are, together, a pentamethylene radical, and a is the number 0, 1 or 2. The invention also relates to a process for the stabilization of recycled plastics and to the use of the above macrocyclic compounds as stabilizer.

Abstract: A light resistant polymer composition useful for molding applications is provided. The polymer composition comprises a blend of polycarbonate resin with a graft copolymer resin and an acylated sterically hindered amide. The compositions have improved physical properties as compared to compositions containing hindered amine light stabilizers.

Abstract: Novel oligomeric compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, are disclosed as stabilisers for protecting organic material against oxidative, thermal or light-induced degradation.

Abstract: Curable compositions containing new classes of 1,3,5-triazine compounds as crosslinkers are disclosed, which compounds are of the general formula ##STR1## wherein each of Y, Z and optionally X are independently selected from a group of the formula (II), (III) and/or (IV) ##STR2## and wherein A, D, Q, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are as defined herein.

Abstract: A disposable cartridge for storage and delivery of reagents for synthesizing and labeling of synthetic oligonucleotides comprises an annular casing, an enclosed area defined by the interior surface of the casing and a non-swellable matrix which is inert to organic solvents is positioned within the enclosed area. Adsorbed onto the surface of the matrix is a reagent to be coupled to an immobilized oligonucleotide precursor. The cartridges can be packaged in such a way as to insure the long-term stability of the reagents contained therein. The cartridge is readily insertable into the reagent delivery line of an automated synthesizer of oligonucleotides and also is useful for the production of labeled oligonucleotides by manual coupling. The cartridges of the invention are disposable after a single use. Substantial economies in the synthesis of labeled synthetic oligonucleotides are achieved by use of the cartridge.

Abstract: A wood treatment composition. The composition comprises a stain vehicle wherein the stain vehicle comprises modified tung and linseed oils, a co-solvent, a foam control agent, an alkali, a surfactant, at least one UV-light blocker, a free radical scavenger, a drier catalysts and an aqueous solvent.

Abstract: Coatings comprisingA) a binder based on an organic polymer andB) as stabilizer against damage by light, heat and oxygen, a 2-(2'-hydroxyphenyl)-1,3-pyrimidine of the formula I ##STR1## in which the radicals R.sub.1 to R.sup.6 are as defined in claim 1 have an outstanding resistance to the damaging effects of light, oxygen and heat. Compounds of the formula Ib defined in claim 18 are suitable in general for the stabilization of organic material.

Abstract: o-Hydroxyphenyl-s-triazines of the formula I ##STR1## in which n is 1 to 4 and R.sub.1 to R.sub.7 are as defined in claim 1, can be used, in combination with sterically hindered amines of the polyalkylpiperidine type, for stabilizing organic polymers. Some of these compounds are novel and can also be used without polyalkylpiperidine.

Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.

Abstract: Compounds of formula (I) ##STR1## in which m+n is a number from 1 to 100 and n varies from zero to 90% of the sum of m+n; R.sub.1 and R.sub.3, which may be identical or different, are for example C.sub.1 -C.sub.18 alkyl or phenyl; R.sub.2 is C.sub.2 -C.sub.12 alkylene; G is for example a group of formula (IId) ##STR2## in which R.sub.5 and R.sub.6 are for example hydrogen; R.sub.4 is for example C.sub.1 -C.sub.18 alkyl; L.sub.1 has for example any one of the meanings given to R.sub.1 or is a group (R.sub.28).sub.3 SiO-- where R.sub.28 is C.sub.1 -C.sub.18 alkyl; and L.sub.2 is for example hydrogen, Na, K, C.sub.1 -C.sub.8 alkyl or a group (R.sub.28).sub.3 Si-- with R.sub.28 as defined above.The compounds of formula (I) are useful as light, heat and oxidation stabilizers for organic materials.

Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.

Abstract: A stabilizer mixture comprising, for example, a compound of formula I and a compound of formula III ##STR1## wherein n.sub.1 and n.sub.2 may be an integer from 2 to 20, R.sub.1, R.sub.3, R.sub.6 and R.sub.8 may each be independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl or a group of formula II ##STR2## wherein R.sub.5 may be hydrogen or methyl, R.sub.2 and R.sub.7 are each independently of the other C.sub.2 -C.sub.6 alkylene, R.sub.4 may be C.sub.1 -C.sub.10 alkyl or cyclohexyl, R.sub.9 and R.sub.10 may each be independently of the other C.sub.1 -C.sub.8 alkyl or a group of formula II, or R.sub.9 and R.sub.10, together with the linking nitrogen atom, are morpholino.

Abstract: A releasable aqueous coating composition used for temporarily protecting a finished coating film coated on an automobile body. It contains (A) an aqueous acrylic resin obtained by copolymerizing a monomer mixture of a (meth)acrylic ester monomer as an essential component and other polymerizable unsaturated monomer, except for (meth)acrylonitrile, as an optional component, and having a glass transition temperature of 5.degree. to 30.degree. C. and a weight average molecular weight of 20,000 or more, (B) an ultraviolet light absorber, and (C) a water repellent material. A method of temporarily protecting the finished coating film on the automobile body by coating the releasable aqueous coating composition onto a surface of a finished cured coating film coated onto the automobile body.

Abstract: A synergistic stabilizer composition for polymers is described containing (i) a hydroxy-group containing triazine, and (ii) a 2,2,6,6-tetraalkyl piperidine compound. Also, described is a method of stabilizing polymers.

Abstract: A propylene resin extruded article comprising 100 parts by weight of a propylene resin, 0.03 to 2 parts by weight of a metal salt of a rosin compound, 0.01 to 1 part by weight of a tertiary amine light stabilizer, and 0.01 to 0.5 part by weight of an aromatic phosphite and/or phosphonite antioxidant, and a propylene resin extruded article further comprising 0.01 to 0.5 part by weight of an antistatic agent in addition to the above components. The resin compound comprising the above components does not contaminate extrusion equipment, and the extruded articles are excellent in transparency, hue, thermal aging resistance and, when the antistatic agent is used, are excellent in antistatic property.

Abstract: A compound of formula I for use in stabilizing polymeric material against effects such as light and heat ##STR1## in which R is hydrogen; oxygen; --OH; C.sub.1-24 alkyl; --O--CO--C.sub.1-24 alkyl; --O--CO--C.sub.1-24 alkyl; --O--CO-phenyl or --COR.sub.5 ; where R.sub.5 is --C(R.sub.3).dbd.CH.sub.2, C.sub.1-6 alkyl, phenyl, CO--C.sub.1-24 alkyl, --CO--phenyl, --NR.sub.7 R.sub.8, --CH.sub.2 --C.sub.6 H.sub.5, --CO--OC.sub.1-12 alkyl or --COOH; where R.sub.3 is hydrogen or C.sub.1-4 alkyl; R.sub.7 is hydrogen, C.sub.1-12 alkyl, C.sub.5-6 cycloalkyl, phenyl, phenyl-C.sub.1-4 alkyl or C.sub.1-12 alkylphenyl and R.sub.8 is C.sub.1-12 alkyl or hydrogen,each R.sub.1, independently, is --CH.sub.3 or --CH.sub.2 (C.sub.1-4 alkyl) or both groups R.sub.1 form a group --(CH.sub.2).sub.5 --; andeach R.sub.2, independently, is --CH.sub.3 or --CH.sub.2 (C.sub.1-4 alkyl) or both groups R.sub.2 form a group --(CH.sub.2).sub.5 --.A is --O-- or --N(C.sub.1-4 alkyl)-- or --NH--R.sub.9 is hydrogen or methyl, andR.sub.

Abstract: New N-substituted piperidines useful as light stabilizers in synthetic resins are disclosed. They are 1-(2,7-octadienyl)-2,2,6,6-tetraalkylpiperidines wherein the alkyl groups are independently selected lower alkyl groups such as methyl or ethyl and the 3 and 5 positions may be substituted by methyls. The ring may be monounsaturated; a new compound 1-(2,7-octadienyl)-2, 2,6,6-tetramethyl-3-pyridine is described.

Abstract: Tris-aryl-s-triazines of formula VI ##STR1## which contain from one to three resorcinol derived moieties 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: A solid solution composition comprisinga) a 2,2,6,6-tetraalkylpiperidinyl compound having a low molecular weight; andb) a 2,2,6,6-tetraalkylpiperidinyl compound having a high molecular weightthat have been mixed in the melt, is an excellent stabilizer for polymeric materials.

Abstract: A fluorescent yellow article comprising polyolefin copolymer, perylene imide dye N,N'-bis(2,6-di-isopropylphenyl)-3,4:9,10-perylenebis(dicarboximide), and at least one yellow-green dye selected from the group consisting essentially of Lumogen F Yellow 083, CI Solvent Yellow 98, CI Solvent Yellow 160:1, Oraset Yellow 8GF, CI Solvent Green 4, CI Solvent Green 5, CI Pigment Yellow 101 and CI Solvent Yellow 131 wherein the resultant article has chromaticity coordinates (x,y) within the area defined by (0.425,0.480), (0.465,0.535), (0.557,0.440), and (0.500,0.410) in terms of the CIE 1931 Standard Colorimetric System and measured using 0/45 geometry and evaluated with CIE Standard Illuminant D65.

Abstract: Rigid-rod macromonomers, and methods for preparing such macromonomers, having a polyaromatic backbone, solubilizing side groups, and reactive end groups are provided. The macromonomers are chemically incorporated into polymer systems to provide stronger, stiffened polymers.

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 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: A mixture comprising a compound of the formula I and a compound of the formula II ##STR1## in which n is 1 or 2; R.sub.1, R'.sub.1, R.sub.2, R'.sub.2, R.sub.3 and R.sub.4, independently of one another, are H, C.sub.1 -C.sub.12 alkyl; C.sub.2 -C.sub.6 alkenyl; C.sub.1 -C.sub.12 alkoxy; C.sub.2 -C.sub.18 alkenoxy; halogen; trifluoromethyl; C.sub.7 -C.sub.11 phenylalkyl; phenyl; phenyl which is substituted by C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or halogen; phenoxy; or phenoxy which is substituted by C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or halogen;R.sub.6 is hydrogen, C.sub.1 -C.sub.24 alkyl, C.sub.5 -C.sub.12 cycloalkyl or C.sub.7 -C.sub.15 phenylalkyl;R.sub.7, in the case where n=1, and R'.sub.7, independently of one another, are hydrogen or C.sub.1 -C.sub.18 alkyl; or are C.sub.1 -C.sub.12 alkyl which is substituted by OH, C.sub.1 -C.sub.18 alkoxy, allyloxy, halogen, --COOH, --COOR.sub.8, --CONH.sub.2, --CONHR.sub.9, --CON(R.sub.9)(R.sub.10), --NH.sub.2, --NHR.sub.9, --N(R.sub.9)(R.

Abstract: The invention relates to novel compounds of the formula I ##STR1## in which the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.

Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.

Abstract: A composition for stabilizing synthetic polymers consisting of a blend ofa) at least a derivative of a high molecular weight polymethylpiperidine of formula (I) ##STR1## wherein the groups are as defined hereinafter, and b) at least one other HALS stabilizer wherein the groups are as defined hereinafter is disclosed. These compositions show photostabilizing and antioxidant properties.

Abstract: The invention relates to novel oligomeric compounds of the formula I ##STR1## in which L is a group of the formula ##STR2## where the oxygen in the group L is in each case bonded to the phosphorus in the recurring structural units and the radical R.sub.2 or the carbon in the 4-position of the piperidinyl ring in the group L is in each case bonded to the oxygen in the recurring structural units; and the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.

Abstract: The invention relates to a process for the preparation of olefin polymers by polymerization using a transition metal catalyst with the addition of an aminoalkyl-1,1'-biphenyl-2,2'-diylphosphite or aminoalkyl-2,2'-alkylidene-bis(phenyl)phosphite, in conjunction with optional further modifiers. The polymers obtainable in this manner have excellent long-term stability.

Abstract: Tris-aryl-s-triazines of formula V ##STR1## which contain from one one to three resorcinol derived moieties with at least one of said moieties substituted in the 5-position with a group such as, for example, alkyl or phenylalkyl 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: Tris-aryl-s-triazines of formula I, II or III ##STR1## which contain from one one to three resorcinol derived moieties with at least one of said moieties substituted in the 5-position with a phenylalkyl 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: Described are novel reversible photochromic 3H-naphtho[2,1-b]pyran compounds, of the following graphic formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl, R.sub.2 is hydrogen or preferably a carboalkoxy group and R.sub.3 is hydrogen or preferably an alkyl group, provided that either R.sub.1 or R.sub.2 is hydrogen, and B and B' are the aryl groups phenyl or naphthyl, a heterocyclic aromatic group or together form a spiro adamantylene group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(oxazine) type compounds, are also described.

Abstract: A composition comprising:a) a compound containing a phosphite or phosphonite group and at least one 2,2,6,6-tetraalkylpiperidinyl group, andb) a polyolefin which has been produced in the presence of a catalyst which is eitheri) a supported Zeigler catalyst orii) a metallocene catalyst,from which polyolefin the catalyst has not been removed.

Abstract: The invention relates to polyethers of the formula I ##STR1## in which m is 0 or 1; n is an integer in the range from 3 to 100; R.sup.1, in the case where m is 0 or 1, is C.sub.1 -C.sub.36 alkyl or C.sub.7 -C.sub.36 aralkyl, each of which is unsubstituted or substituted by C.sub.5 -C.sub.8 cycloalkyl, is interrupted in the aliphatic part by C.sub.5 -C.sub.8 cycloalkylene or by oxygen or sulfur or --NR.sup.11 -- or is substituted in the aromatic part by 1 to 3 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; C.sub.3 -C.sub.36 alkenyl; C.sub.5 -C.sub.12 cycloalkyl which is unsubstituted or substituted by 1 to 4 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; C.sub.6 -C.sub.10 aryl which is unsubstituted or substituted by 1 to 4 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; and R.sup.1, in the case where m is 0, can alternatively be hydrogen; C.sub.1 -C.sub.36 alkoxy or C.sub.7 -C.sub.36 aralkoxy, each of which is unsubstituted or substituted by C.sub.5 -C.sub.

Abstract: Aminovinylphosphonic esters I ##STR1## where R.sup.1 is cyano, a radical of the formula --CO--OR.sup.6 or a group of the formula ##STR2## R.sup.2, R.sup.3 and R.sup.6 are C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl,R.sup.4 is an unsubstituted or substituted phenyl or heterocyclic group defined belowR.sup.5 is hydrogen or C.sub.1 -C.sub.12 -alkyl,R.sup.7 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.8 .dbd.CH--CO--OR.sup.6,R.sup.8 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.6, andX is oxygen or NH, are used as light, oxygen and heat stabilizers for organic material.

Abstract: Disclosed is a piperidinyl phosphite composition consisting of a piperidinyl phosphite compound and an additive having a melting point of greater than 155.degree. C. selected from the group consisting of (i) sorbitol compounds, (ii) phosphite compounds and (iii) sterically hindered phenolic compounds, and polyolefin compositions containing them.

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: Polymers of (N-lower alkyl)dimethylglutarimide or (N-hydrogen)dimethylglutarimide are resistant to surface crazing, molecular weight degradation and yellowing on exposure to ultraviolet light, by inclusion of a hindered amine stabilizer.

Abstract: The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilizing an organic material against thermal, oxidative and light-induced degradation.

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: The subject-matter of the present invention is to solve the technical problem resulting from the instability in air of polysilanes. For this purpose, it proposes a polysilane-based composition, used particularly for producing silicon carbide, comprising:polysilane chains capable of being degraded by oxidation and the formation of polysiloxane-type products and/or polysilane chains suitable for being bound together directly by a reaction between Si--H and Si--X radicals, and/or indirectly through the intermediary of a crosslinking additive and by a reaction between A--X and A--H radicals, X being an olefin radical, preferably comprising 1 to 18 carbon atoms and, more preferably still, being constituted by a vinyl radical (Vi:--CH.dbd.CH.sub.2), A being an organic, organosilicic or silicic radical;and at least one antioxidant system.

Abstract: New azodicarboxylic acid derivatives of formula I ##STR1## where R.sub.1 is hydrogen, oxyl, hydroxyl, alkyl, allyl, benzyl, alkoxy or acyl, and X is --O-- or --NR-- where R is hydrogen or alkyl, are useful for the stabilization of polymers, particularly unsaturated elastomers, by being grafted thereon.

Abstract: A miscible blend composition having high T.sub.g and good chemical resistance comprising, based on the total weight of the composition, from about 30 to about 90 weight % of a polyalkylene terephthalate, from about 70 to about 10 weight % of a polyarylate polymer, and an effective amount of an ester-interchange inhibitor.

Abstract: The present invention relates to a method for making nitrosamine-free silicone articles by treating the mixture of vinyl containing organopolysiloxane and filler with hindered phenols, a nitrosamine-free composition and a nitrosamine-free article made therefrom. A preferred nitrosamine-free molded article is a baby bottle nipple.

Abstract: Phillips' process high density polyethylene resin compositions having improved processing stability are obtained using a combination of stabilizers comprised of a hindered phenol and a phosphite compound having three cyclic phosphite moieties linked via a nitrogen atom. More specifically, the phosphite compound is 2, [[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]-dioxaphosphepin- 6-yl]oxy]-N,N-bis [2-[[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo[d,f][1,3,2]dioxaphosphenpin-6-yl]oxy]-ethyl]ethanamine. With the HDPE compositions stabilized in accordance with the invention, it is possible to eliminate undesirable rapid changes in melt viscosity which can occur when Phillips' process HDPE resins are processed under conditions of high shear.