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| Number | Title | Issue Date |
| 7378558 | Method for producing carotenoids A process for preparing carotenoids, in which the process includes reacting a dialkoxy dialdehyde in a double Wittig condensation with a phosphonium salt of or in a double Wittig-Horner condensation with a phosphonate. The carotenoids include, for example, β-carote... | 05/27/2008 |
| 7157608 | Process for producing allyl ether In the production of allyl ethers of polyol by reacting a straight-chain polyol compound with an allyl halide in the presence of an alkali metal hydroxide, wherein the straight-chain polyol compound has carbon atoms each having one hydroxyl group, the reaction betwe... | 01/02/2007 |
| 7138440 | High refractive index polymeric siloxysilane compositions Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the pol... | 11/21/2006 |
| 7132391 | Ethers of 2,2,4-trimethylpentane-1,3-diol as fragrance materials An alkyl gycol ether having the following formula wherein R is a C1–C7 saturated, unsaturated, straight-chain or branched, acyclic or cyclic alkyl group, is useful as a fragrance material ... | 11/07/2006 |
| 7091299 | High refractive index polymeric siloxysilane compositions Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the pol... | 08/15/2006 |
| 7022665 | Acetals of 2,4,7-decatrienal as perfuming or flavoring ingredients The present invention relates to an acetal of formula in which the symbols R1 represent, independently or simultaneously, a linear or branched saturated or unsaturated C1 to C4 hydrocarb... | 04/04/2006 |
| 6908978 | High refractive index polymeric siloxysilane compositions Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the pol... | 06/21/2005 |
| 6835325 | Crosslinking agent based on polyallyl ether compound A crosslinking agent containing a polyallyl ether compound having at least one hydroxyl group derived from a glycidyl group and at least two allyl groups can be used for the production of a highly water-absorbing polymer comprising a polymerizable compound having a ... | 12/28/2004 |
| 6803407 | Polyorganosiloxanes having alkoxylated side chains Described are polysiloxane compositions that are obtainable in 2 steps. The first step comprises reacting a linear organopolysiloxane which contains Si—H bonds with a compound that has a terminal C═C double bond and a polyoxyalkylene chain. This reaction is carr... | 10/12/2004 |
| 6797742 | Polar solvent compatible polyethersiloxane elastomers The cross-linked hydrosilylation reaction product of an alkenyl functional silicone compound, a silylhydride functional silicone compound, and one or more allyl started, hydrogen, alkyl, aryl or acyl terminated polyether compounds exhibits stability, compatibility w... | 09/28/2004 |
| 6794464 | Membrane or matrix for controlling the permeation rate of drugs A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(a... | 09/21/2004 |
| 6784271 | Odorless modified silicone compound, cosmetic preparation containing the same, and method of purifying modified silicone compound having branch polymer comprising hydrophilic group A modified silicone compound having a branch polymer comprising a hydrophilic group, this compound being synthesized by performing an addition reaction between an organohydrogenpolysiloxane, and at least one compound chosen from an alkenylated polyoxyalkenylated com... | 08/31/2004 |
| 6727340 | Fluoro alkyl dimethicone copolyol esters The present invention relates to novel dimethicone copolyol ester compounds bearing a fluoro group attached through a hydrophobic ester linkage to silicon. This invention also relates a series of such products having differing amounts of water-soluble groups, silico... | 04/27/2004 |
| 6669949 | Siloxane-containing oil compositions with good spreading properties This invention relates to asymmetrical, substituted polysiloxanes which show good compatibility in a variety of oils and improve the spreading behavior of oil-based formulations, to a process for preparing these asymmetrical polysiloxanes and to oil formu... | 12/30/2003 |
| 6548629 | Polar solvent compatible polyethersiloxane elastomers The cross-linked hydrosilylation reaction product of an alkenyl functional silicone compound, a silylhydride functional silicone compound, and one or more allyl started, hydrogen, alkyl, aryl or acyl terminated polyether compounds exhibits stability, comp... | 04/15/2003 |
| 6544532 | Composition containing an unstable active agent in an oxidizing medium and uses thereof, especially cosmetic uses The invention relates to a composition containing, in a physiologically acceptable medium, an unstable active agent in an oxidizing medium and an oil phase comprising cross-linked elastomer solid organopolysiloxane particles consisting of at least one oxy... | 04/08/2003 |
| 6545085 | Polar solvent compatible polyethersiloxane elastomers The cross-linked hydrosilylation reaction product of an alkenyl functional silicone compound, a silylhydride functional silicone compound, and one or more allyl started, hydrogen, alkyl, aryl or acyl terminated polyether compounds exhibits stability, comp... | 04/08/2003 |
| 6534077 | Organosiloxane containing modified groups in agricultural compositions The present invention teaches modified organosilicone and their use, a preferred of which is as adjuvants for pesticides. The modified organosilicone have siloxane backbones with pendant, terminal or intermediate amine and polyether groups. The modified g... | 03/18/2003 |
| 6503995 | Method of producing crosslinkable silyl group-containing polyoxyalkylene polymers A method of producing a polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule which comprises treating a polyoxyalkylene polymer having at least one unsaturated group and at least one alcoho... | 01/07/2003 |
| 6495725 | Process for the preparation of optically active enones and intermediates thereof The present invention provides a simplified and convenient process for the preparation of an optically active enone such as 7,7-dimethyl-6,8-dioxabicyclo-[3,3,0]oct-3-en-2-one. The invention further provides novel optically active intermediate compounds. ... | 12/17/2002 |
| 6458837 | Lipophilic diesters of chelating agents The invention discloses stable diesters of chelating agents of divalent metal ions, processes for their preparation and pharmaceutical compositions thereof. Most preferred compounds according to the present invention are stable lipophilic diesters compris... | 10/01/2002 |
| 6406680 | X-ray contrast agents This invention describes a new type of X-ray contrast agents. It has been found that iodinated alkenes containing one or several C.dbd.C double bonds substituted with electronic neutral substituents and iodine can be used as X-ray contrast agents. Also ne... | 06/18/2002 |
| 6388042 | Dimethicone copolyol esters The present invention relates to novel dimethicone copolyol ester compounds bearing a fatty group attached through a hydrophobic ester linkage to silicon. This invention also relates a series of such products having differing amounts of water-soluble grou... | 05/14/2002 |
| 6388005 | Emulsion and process of preparing emulsions and oily compositions An emulsion of silicone oil or organic oil possesses excellent stability and contains cross-linked particles in drops of silicone oil or organic oil dispersed in water. The particles have an average diameter of 0.05 μm to 100 μm and are prepared by hydr... | 05/14/2002 |
| 6346583 | Polar solvent compatible polyethersiloxane elastomers The cross-linked hydrosilylation reaction product of an alkenyl functional silicone compound, a silylhydride functional silicone compound, and one or more allyl started, hydrogen, alkyl, aryl or acyl terminated polyether compounds exhibits stability, comp... | 02/12/2002 |
| 6326499 | Omega chain modified 15-hydroxyeicosatetraenoic acid derivatives and methods of their use for the treatment of dry eye Omega chain modified 15-HETE derivatives and methods of their use for treating dry eye are disclosed.... | 12/04/2001 |
| 6271280 | Diacetylenic polyorganosiloxanes, intermediates therefor, and cured compositions prepared therefrom Intermediate compositions comprising ethynylorgano polyorganosiloxanes are prepared by hydrosilylation of an olefinic hydroxy compound followed by reaction with a propargyl halide, or by hydrosilylation of a diethynyl compound. The intermediate compositio... | 08/07/2001 |
| 6271423 | Preparation of butenyl ethers A process for preparing butenyl ethers of the formula I CH3 --CH.dbd.CH--CH2 --OR I by reacting butadiene or butadiene-containing hydrocarbon streams with alcohols of the formula II ROH II at elevated temperature and superatmospheric pressur... | 08/07/2001 |
| 6245948 | Preparation of tetrahydrofuran from dialkoxybutenes A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/or II where the R radicals can be identical or different and are C1 -C15 -alkyl or cycloalkyl radicals, C6 -C1... | 06/12/2001 |
| 6187891 | Linear polyether-polysiloxane copolymers, their preparation and use The present invention relates to linear polyether-polysiloxane copolymers of the general formula A(BC)n BA, in which linear polyether and linear polysiloxane units are linked via Si--C bonds, and to a process for their preparation.... | 02/13/2001 |
| 6153736 | Modified ether glyceroglycolipids This invention provides lipids having: 1) a glycerol backbone; 2) a hydrocarbon chain, preferably saturated and containing 16 or 18 carbon atoms, attached to C-1 of the backbone by an ether linkage; 3) a methyl group attached to C-2 of the backbone, prefe... | 11/28/2000 |
| 6103939 | Process for the preparation of 1,4-butanediol monoethers A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/or II RO--CH2 --CH.dbd.CH--CH2 --OR I RO--CH2 --CH2 .dbd.CH--CH2 --OR ... | 08/15/2000 |
| 6019909 | Fluorinated hydrocarbon compound and process for its preparation, and refrigerator oil and magnetic recording medium lubricant A novel fluorinated hydrocarbon compound containing an oxygen or sulfur atom in its molecule, produced by the nucleophilic reaction of a fluorine compound with a hydrocarbon compound. This compound is useful as a lubricant for various applications and par... | 02/01/2000 |
| 6013731 | Stabilizer based on high molecular weight polyols having low monol content for polymer polyol production Stabilizer precursors and preformed stabilizers having induced unsaturation, and prepared from low intrinsic unsaturation-containing polyoxyalkylene polyether polyols may be used to form polymer polyols of higher solids content, lower viscosity, and super... | 01/11/2000 |
| 5986122 | Treatment of polyethers prior to hydrosilylation This Invention discloses the use of ascorbic and citric acid, their salts, ethers, acid esters and mixtures thereof in a method for the prevention of peroxide formation, and/or for decomposing peroxides already formed in polyethers. Hereby, the polyethers... | 11/16/1999 |
| 5977404 | Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on di-, oligo- and polyol ethers The invention relates to amphiphilic compounds of the general formula (I) with at least two hydrophilic and at least two hydrophobic groups based on di, oligo or polyolethers. The amphiphilic compounds of this invention are highly surface active and are s... | 11/02/1999 |
| 5650544 | Process for production of unsaturated ether and catalyst used for production of unsaturated ether The present invention provides a process for producing an unsaturated ether, which comprises subjecting a glycol ether to intramolecular dehydration in a gas phase in the presence of a catalyst to convert the glycol ether into an unsaturated ether directl... | 07/22/1997 |
| 5616812 | Method of producing a polyvinyl ether compound A method of production of polyvinyl ether compound by which the polyvinyl ether compound having a desired degree of polymerization is produced reliably, safely and efficiently and a novel polyvinyl ether compound useful as lubricating oil for compression-... | 04/01/1997 |
| 5580996 | Oxygen-containing aliphatic compounds and their use as intermediates for the preparation of 4-hydroxy-2, 5-dimethyl-3(2H)-furanone The compounds of the invention are characterised by the formulae ##STR1## wherein index p represents an integer equal to 2 or 3 and q can take the value zero or 1, with the provision that p+q=3. Said compounds are obtained from hex-3-yne-2,5-diol fol... | 12/03/1996 |
| 5510541 | Process for the telomerization of conjugated dienes and suitable catalyst therefor Mono-alkadienyl alkyl ethers and di-alkadienyl alkyl ethers are prepared by telomerization of a conjugated diene, by causing said conjugated diene to react with an aliphatic alcohol or an aliphatic diol respectively, by operating in an aqueous/organic bip... | 04/23/1996 |
