Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7385089 | Fluorochemical ketone compounds and processes for their use A fluorochemical ketone compound consists of two terminal, branched, independently fluoroalkylcarbonyl or perfluoroalkylcarbonyl groups and an intervening linear perfluoropolyether segment, each of the terminal groups optionally comprising at least one catenated het... | 06/10/2008 |
| 7223832 | Double-metal cyanide catalysts which can be used to prepare polyols and the processes related thereto The present invention is directed to polyols prepared in the presence of double metal cyanide catalysts (“DMC”) which are prepared by combining i) at least one metal salt; ii) at least one metal cyanide salt; iii) at least one organic complexing ligand; iv) at l... | 05/29/2007 |
| 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 |
| 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 |
| 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 |
| 6734281 | Organic polymers The invention relates to novel oligomers of formula wherein the variables are as defined in the claims. The oligomers of the invention are especially useful for the manufacture of biomedical moldings, for example ophthal... | 05/11/2004 |
| 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 |
| 6573411 | Process for the preparation of fluoropolyoxyalkylenes having one end group -CH2OH and the other end group containing chlorine A process to obtain fluoropolyoxyalkylenes having the structure: T--O--(CF2 CF(CF3)O)n-1 --(CF(CF3)O)m --CF2 --CH2 OH (I) wherein: T=C1 -C3 perfluoroalkyl containing... | 06/03/2003 |
| 6506947 | Fluorinated diol and method for the production thereof The subject-matter of the invention is a fluorinated diol and its process of preparation. The fluorinated diol corresponds to the formula (I): Cn F2n+1 --A--CH2 OCH2 --C(CH2 OH)2 --R in which n has a... | 01/14/2003 |
| 6437133 | Method of catalytically removing a protective group containing an allyl group using a reducing agent A method of efficiently removing the protective group from a protected hydroxyl or amino group with an allyl derivative by one step reaction under neutral conditions. A protected hydroxyl or amino group is converted into a free hydroxyl or amino group in ... | 08/20/2002 |
| 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 |
| 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 |
| 6307044 | Process for the preparation of macrocyclic metalloprotease inhibitors The present invention is directed to a process for the preparation of a compound of formula (X-a): ##STR1## or a pharmaceutically acceptable salt form thereof, wherein: R1 is selected from the group consisting of: C1-5 alkyl substituted w... | 10/23/2001 |
| 6307067 | Palladium and boron co-catalyzed addition of oxygen nucleophiles to vinyl epoxides Nucleophilic oxygen species, such as primary alcohols, carboxylates, and water, are added to vinyl epoxides in a highly regioselective and enantioselective manner, providing a convenient route to enantiomerically enriched 1,2-diols and oxygen-containing h... | 10/23/2001 |
| 6278031 | Catalyst and process for preparing 2-buten-1-ol compounds The fixed-bed catalyst comprises palladium and selenium or tellurium or a mixture of selenium and tellurium on a silicon dioxide support and has a BET surface area of from 80 to 380 m2 /g and a pore volume of from 0.6 to 0.95 cm3 /g ... | 08/21/2001 |
| 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 |
| 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 |
| 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 |
| 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 |
| 5898086 | Process for making alkyl ether glycerols A process for making alkyl ether glycerols involving: (a) providing a feedstock component having at least one terminal hydroxyl group selected from the group consisting of glycerides and polyols; (b) providing a heavy metal catalyst; and (c) contacting th... | 04/27/1999 |
| 5763683 | 2-methylbutoxy ethoxyethanol A novel 2-Methylbutoxy ethoxyethanol and a method for the preparation thereof. The use of the novel 2-Methylbutoxy ethoxyethanol as a solvent or a coalescing aid in aqueous formulations used as coatings and paints, a cleaning solvent for electronic compon... | 06/09/1998 |
| 5605939 | Poly(oxypropylene/oxyethylene) random polyols useful in preparing flexible high resilience foam with reduced tendencies toward shrinkage and foam prepared therewith High resilience polyurethane foams exhibiting little or no shrinkage may be prepared from low unsaturation double metal cyanide catalyzed polyoxyalkylene polyols in amounts greater than 20 weight percent of the total polyol component, when low unsaturatio... | 02/25/1997 |
| 5536882 | Preparation of polyether glycols and alcohols by the polymerization 3,4-epoxy-1-butene Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of re... | 07/16/1996 |
| 5410094 | Tertiary alkynols Processes for synthesizing tertiary alkynols by reacting carbonyl-group-containing compounds with alkynes in the presence of a basic catalyst are disclosed. Preferred products are 6,10,14-trimethyl-4-pentadecyn-6-ol compounds having the structure: ##... | 04/25/1995 |
| 5349071 | Process for preparing tertiary alkynols Processes for synthesizing tertiary alkynols by reacting carbonyl-group-containing compounds with alkynes in the presence of a basic catalyst are disclosed. Preferred products are 6,10,14-trimethyl-4-pentadecyn-6-ol compounds having the structure: ##... | 09/20/1994 |
| 5312950 | Method for purification of alcohols A method for the purification of alcohols from organic soluble impurities has been discovered comprising treating the crude alcohol with a cyclic anhydride followed by an aqueous base and extracting the corresponding half-ester into aqueous solution leavi... | 05/17/1994 |
| 5254782 | Continuous process for the telomerization of conjugated dienes Continuous process for the telomerization of conjugated dienes comprising reacting a conjugated diene with a compound containing an active hydrogen atom in the liquid phase in the presence of a Group VIII transition metal catalyst, a ligand compound of a ... | 10/19/1993 |
| 5245085 | Substituted-acyclic terpene compound Acyclic terpene compounds useful as intermediates for producing sarcophytol A which have an anti-carcinogenic promoter activity and anti-tumor activity, which compounds are shown by the general formula (I): ##STR1##... | 09/14/1993 |
| 5225608 | Sandalwood odorants The present invention relates to novel substituted cyclohexanol compounds possessing a sandalwood aroma which are useful as fragrance materials. The invention also provides methods for synthesis thereof through a novel aldehyde intermediate. The compounds... | 07/06/1993 |
| 5210324 | Monomer production A new process for producing allyl ethers, usually C8-30 alkyl (CH2 CH2 O)5-100 allyl ether, by forming a solution of an alcohol, usually a surfactant alcohol, in a solvent capable of forming an azeotrope with wa... | 05/11/1993 |
| 5210322 | Processes for the preparation of ethers A process for preparing ethers which comprises contacting a carboxylated ether with a metal oxide catalyst under conditions effective to produce the ether.... | 05/11/1993 |
| 5198599 | Sulfonylurea herbicide resistance in plants Plants, plant tissues and plant seeds which are resistant to inhibition by sulfonylurea and/or imidazolinone herbicides are provided. In particular, domestic lettuce varieties having resistance to herbicides which target the enzyme acetolactate synthase a... | 03/30/1993 |
| 5198598 | Telomerization process of a conjugated alkadiene with a polyol Alkadienyl ethers are prepared by the telomerization of conjugated dienes with polyols by continuous addition of the alkadiene to a reaction mixtue comprised of the polyol, secondary alcohol solvent, a portion of the alkadiene to be added, and low palladi... | 03/30/1993 |
| 5191123 | Processes for the preparation of hydroxyl-containing compounds A process for preparing hydroxyl-containing compounds which comprises contacting a carboxylated hydroxyl-containing compound with a metal oxide catalyst under conditions effective to produce the hydroxyl-containing compound.... | 03/02/1993 |
| 5153179 | Medicament with improved penetration of the tissue membrane A composition useful as a medicament with improved penetration of cell membranes comprising an active material and a compound of general formula: ##STR1## wherein either residue R1 or R2 is an alkyl, alkylene, alkynyl or alkoxy ... | 10/06/1992 |
| 5146005 | Cationically curable oxalkylene ethers, method for their synthesis and their use as casting compounds, coating compositions or as reactive diluents for epoxide resins New, cationically curable oxyalkylene ethers and the synthesis thereof are disclosed. The oxyalkylene ethers, are of the general, average formula ##STR1## wherein R1 is an n-valent residual group derived from a compound (R1)H | 09/08/1992 |
| 5126493 | Alkoxylation of active hydrogen compounds Alkoxylates of active hydrogen compounds having a peaked molecular weight distribution are prepared by reacting the active hydrogen compound with an alkylene oxide of from 2 to 4 carbon atoms using iron oxides as alkoxylation catalysts.... | 06/30/1992 |
| 5104987 | Alkoxylation of active hydrogen-containing compounds This invention relates to a process for the alkoxylation of an active hydrogen-containing compound comprising contacting the active hydrogen-containing compound with an alkylene carbonate in the presence of a mixed metal oxide catalyst under conditions ef... | 04/14/1992 |
