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| Number | Title | Issue Date |
| 6649770 | Substituted 5-aryl-2-(2-hydroxyphenyl)-2H-benzotriazole UV absorbers, compositions stabilized therewith and process for preparation thereof Compounds of formula I or II ##STR1## where R is an aryl moiety, such as phenyl, naphthyl or biphenylyl, or is phenyl substituted by one or more trifluoromethyl, bromo or cyano, and E1 and E2 are independently hydrogen, alkyl, aralky... | 11/18/2003 |
| 6638997 | Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith Hindered amines substituted on the N-atom with an --O--E--OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of ... | 10/28/2003 |
| 6296674 | Candle wax stabilized with red-shift benzotriazoles White, dyed, dipped, unscented and/or scented candle wax is effectively stabilized against discoloration and fading by the incorporation therein of a red-shifted benzotriazole either alone or in combination with a hindered amine and/or an antioxidant.... | 10/02/2001 |
| 6277935 | Polymerizable composition and polymerization method A solventless polymerizable composition comprising (a) at least one strained cycloolefin that is liquid or is meltable without decomposition, and (b) a catalytic amount of at least one compound of formula I or Ia or a mixture of compounds of formula I and Ia ... | 08/21/2001 |
| 6277986 | Photoactivatable nitrogen-containing bases based on -amino ketones The invention relates to organic compounds having a molecular weight of less than 1000 comprising at lease one structural unit of the formula (I) ##STR1## in which R1 is an aromatic or heteroaromatic radical which is capable of absorbing light ... | 08/21/2001 |
| 6271377 | Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith Hindered amines substituted on the N-atom with an --O--E--OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of ... | 08/07/2001 |
| 6268415 | Stabilized adhesive compositions containing highly soluble, photostable benzotriazole UV absorbers and laminated articles derived therefrom Adhesive compositions are rendered stable against degradation caused by ultraviolet light through the incorporation of a highly soluble, photostable benzotriazole UV absorber which is substituted in the ortho position of the hydroxyphenyl ring by .alpha.-... | 07/31/2001 |
| 6261738 | Oxime derivatives and the use thereof as latent acids Compounds of formula I, II and III, wherein ##STR1## wherein R1 is for example hydrogen, C1 -C12 alkyl, C3 -C30 cycloalkyl, C2 -C12 alkenyl, C4 -C8 cycloalk... | 07/17/2001 |
| 6262206 | Polymerizable compositions containing alkoxyamine compounds derived from nitroso- or nitrone compounds A polymerizabie composition, comprising a) at least one ethylenically unsaturated monomer or oligomer, and b) an initiator compound of formula (I) ##STR1## wherein n is O or 1. The compounds of formula (I) are prepared from a free radical ##STR2## and a c... | 07/17/2001 |
| 6262151 | Benzotriazole UV absorbers having enhanced durability Benzotriazole UV absorbers which are substituted at the 5-position of the benzo ring by an electron withdrawing group exhibit enhanced durability and very low loss rates when incorporated into automotive coatings. This is particularly the case when the 3-... | 07/17/2001 |
| 6254724 | Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxi... | 07/03/2001 |
| 6251963 | Photoinitiator combinations Photoinitiator combinations comprising at least one compound of formula (I) ##STR1## R1 is C1 -C4 alkyl, C1 -C4 alkoxy or halogen; R2 is hydrogen, C1 -C4 alkyl, C1 | 06/26/2001 |
| 6248899 | Transesterification catalysts fixed to solid support materials A description is given of a process for the transesterification of carboxylic esters, characterized in that the catalyst used is a tin(IV) compound comprising a radical of the formula ##STR1## bound to an inorganic support, where L is an at least divalent... | 06/19/2001 |
| 6245915 | Asymmetrical bisbenzotriazoles substituted by a perfluoroalkyl moiety Asymmetrical bis benzotriazoles of the formula I ##STR1## where G2 ' is perfluoroalkyl of 1 to 12 carbon atoms, preferably CF3, and where G2 does not contain said group are red-shifted and due to the asymmetry are particul... | 06/12/2001 |
| 6242090 | Fibre reinforced resin composite products A method of producing a curable prepreg which comprises (i) sandwiching a multi-ply fabric layer comprising at least two superposed sheets of woven reinforcing fabric between solid films of a curable resin composition and (ii) heating the resulting sandwi... | 06/05/2001 |
| 6235856 | Polymerization of dicyclopentadiene Composition of (a) dicyclopentadiene, by itself or in a mixture with a strained cycloolefin, and (b) a catalytic amount of at least one carbene-free, divalent-cationic ruthenium or osmium compound as a single-component catalyst, which contains at least on... | 05/22/2001 |
| 6225384 | Stabilized adhesive compositions containing highly soluble, high extinction, photostable hydroxyphenyl-s-trianzine UV absorbers and laminated articles derived therefrom Adhesive compositions are rendered stable against degradation caused by ultraviolet light through the incorporation of a highly soluble, high extinction, photostable hydroxyphenyl-s-triazine UV absorber or mixtures of s-triazine UV absorbers. An example o... | 05/01/2001 |
| 6221115 | Candle wax stabilized by a combination of UV absorber plus a selected hindered amine Candle wax containing a combination of a UV absorber, preferably a benzotriazole, in combination with a hindered amine which is substituted on the N-atom by an alkoxy, a cycloalkoxy or an hydroxy-substituted alkoxy moiety is surprising better stabilized t... | 04/24/2001 |
| 6218536 | 1,2-bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositions 1,2-Bis-adducts of stable hindered nitroxide compounds with substituted ethylenes are prepared by reacting two equivalents of nitroxyl compound with an ethylenically unsaturated compound such as styrene or an acrylate ester. These adducts are very effecti... | 04/17/2001 |
| 6210863 | Borate coinitiators for photopolymerization Compounds of the formula I or I' ##STR1## in which R1 and R2 independently of one another, for example, are an aromatic hydrocarbon, with the proviso that the aromatic hydrocarbon radical is substituted in at least one o-position, or... | 04/03/2001 |
| 6211378 | Process for the synthesis of 4-substituted N-[(alk-2-en-1-yl)oxy]-and N-aralkyloxy-2,2,6,6-tetraalkylpiperidines An environmentally friendly process for the preparation of the 4-functionalized N--OR derivatives of 2,2,6,6-tetraalkylpiperidines involves the hydrogen peroxide of the corresponding N--H compound to form the corresponding N-oxyl derivative, reacting two ... | 04/03/2001 |
| 6191199 | Stabilized adhesive compositions containing highly soluble, high extinction photostable hydroxyphenyl-s-triazine UV absorbers and laminated articles derived therefrom Adhesive compositions are rendered stable against degradation caused by ultraviolet light through the incorporation of a highly soluble, high extinction, photostable hydroxyphenyl-s-triazine UV absorber. An example of such compounds is 2,4-bis(2,4-di... | 02/20/2001 |
| 6191209 | Polyester compositions of low residual aldehyde content A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a second polymer which is poly(vinyl alcohol) or an ethylene/vinyl alcohol copolymer when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when ... | 02/20/2001 |
| 6187387 | Stabilization of wood substrates The invention relates to a method of protecting wood against light-induced degradation by treatment with a stain or impregnation which penetrates the surface of the wood comprising a) at least one organic solvent; b) a hindered amine compound of formula I or II ... | 02/13/2001 |
| 6187919 | Stabilized organic material o-Hydroxyphenyl-s-triazines of the formula I ##STR1## in which n is 1 to 4 and R1 to R7 are as defined in claim 1, can be used, in combination with sterically hindered amines of the polyalkylpiperidine type, for stabilizing organic p... | 02/13/2001 |
| 6187845 | Stabilized adhesive compositions containing highly soluble, red-shifted, photostable benzotriazole UV absorbers and laminated articles derived therefrom Adhesive compositions are rendered stable against degradation caused by ultraviolet light through the incorporation of selected highly soluble, red-shifted, photostable benzotriazole UV absorbers which absorb light strongly in the 350 to 400 nm range. The... | 02/13/2001 |
| 6166212 | Process for the synthesis of N-(hydroxyalkoxy) substituted hindered amine stabilizers N-(Hydroxyalkoxy) hindered amine stabilizers are prepared by reacting the corresponding N-oxyl compound with a peroxide or organic hydroperoxide and a catalytic amount of a metal salt or metal-ligand complex in an alcohol solvent. These N-(hydroxyalkoxy) ... | 12/26/2000 |
| 6166218 | Benzotriazole UV absorbers having enhanced durability Benzotriazole UV absorbers which are substituted at the 5-position of the benzo ring by an electron withdrawing group exhibit enhanced durability and very low loss rates when incorporated into automotive coatings. This is particularly the case when the 3-... | 12/26/2000 |
| 6162883 | Catalyst mixture and polymerizable composition A mixture of at least one thermal carbene-free ruthenium catalyst A and at least one thermal ruthenium carbene catalyst B, both of which initiate the ring-opening metathesis polymerization on their own, said catalysts being present in a weight ratio of A ... | 12/19/2000 |
| 6156815 | Acid-curable binder systems containing 1,2-disulfones 1,2-Disulfones are particularly suitable as thermally and photochemically activatable latent acid catalysts for binder systems which contain at least one acid-curable component.... | 12/05/2000 |
| 6140397 | Stabilizers and anti-ozonants for elastomers Elastomers that have excellent stability towards oxidative, light- or ozone-induced degradation comprise as stabilizers at least one compound of the benzofuran-2-one type.... | 10/31/2000 |
| 6133414 | Decomposing polymers using NOR-HALS compounds A method is described for the decomposition of polymers, especially waste plastics and used plastics, in which so-called NOR--HALS compounds--that is, for example, compounds comprising the group ##STR1## in which R* is C1 -C20 a... | 10/17/2000 |
| 6113980 | Method for improving the chargeability of a powder coating composition A method for improving the chargeability of a powder coating composition containing an organic film-forming binder, which method comprises incorporating into the powder coating composition at least two different compounds containing a residue of the formu... | 09/05/2000 |
| 6103938 | Process for preparing 4-(substituted phenyl)-3,4-dihydro-2H-naphthalen-1-ones 4-(Substituted phenyl)-3,4-dihydro-2H-naphthalen-1-ones, which are useful as intermediates in the preparation of antidepressant agents, are conveniently prepared by reacting 1-substituted naphthalenes and an aromatic moiety in the presence of an acid cata... | 08/15/2000 |
| 6093779 | Polymerizable acetylene composition and acetylene photopolymerization process Compositions comprising at least one nonvolatile acetylene alone or together with a strained cycloolefin and catalytic amounts of a catalyst for metathesis polymerization, which comprise at least one one-component catalyst from the group molybdenum compou... | 07/25/2000 |
| 6087070 | Photoactivatable nitrogen-containing bases based on -amino alkenes The invention relates to organic compounds having a molecular weight of less than 1000 comprising at least one structural unit of the formula (I) ##STR1## in which R1 is an aromatic or heteroaromatic radical which is capable of absorbing l... | 07/11/2000 |
| 6080864 | Derivatives of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the pr... | 06/27/2000 |
| 6077805 | Hexacoordinated ruthenium or osmium carbene catalysts Hexacoordinated ruthenium and osmium catalysts of the formulae ##STR1## in which M and M' independently of one another are ruthenium or osmium; X, X', Y and Y' independently of one another are anionic ligands, or X and Y and X' and Y' in each case togethe... | 06/20/2000 |
| 6060543 | Stabilizer combination Mixtures comprising a compound of the formula I and a compound of the formula II ##STR1## in which E1 and E2 ##STR2## q is 0 or 1, p and k are each 1 or 2, and the remaining symbols are as defined in claim 1, are outst... | 05/09/2000 |
| 6057380 | Photogeneration of amines from -aminoacetophenones Compounds of formula I, II or III ##STR1## X is a divalent radical; Y is C1 -C6 aklylene, cyclohexylene or a direct bond; Ar1 is an aromatic radical as defined in claim 1, R1 and R2 are each independe... | 05/02/2000 |
