| Patent Number |
Title Of Patent |
Date Issued |
| 7034103 |
Process for production of polyols with hydroxide containing double metal cyanide (DMC) catalysts |
April 25, 2006 |
| The present invention provides process for producing polyols using a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II), M.sup.1.sub.x[M.sup.2(CN).sub.6].sub.yOH.L (I) M.sup.1.sub.x[M.sup.2(CN).sub.6].sub.y.zM.sup.1(OH).sub.q.L (II) wherei |
| 6855794 |
Polycarbonate substrates |
February 15, 2005 |
| Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from |
| 6855390 |
Optical data carriers and method for producing the same |
February 15, 2005 |
| A process for the preparation of optical data carriers made of a particualr polycarbonate is disclosed. The polycarbonate is prepared by the phase boundary process that entails reacting at least one dihydroxydiarylalkane in the form of its alkali metal salts with phosgene in the heteroge |
| 6835798 |
Method of producing polycarbonates |
December 28, 2004 |
| A process for the preparation of polycarbonate by the phase boundary process is disclosed. The process entails reacting at least one dihydroxydiarylalkane in the form of its alkali metal salts with phosgene in the heterogeneous phase in the presence of sodium hydroxide solution and a |
| 6833182 |
Size compositions, sized glass fibers and their use |
December 21, 2004 |
| A composition suitable for sizing of glass fibers is disclosed. The composition contains water dispersible, water-soluble or water emulsifiable resin selected from the group consisting of polyepoxide, polyester, polyvinyl acetate, polyacrylate and polyurethane, water, an organofuncti |
| 6815524 |
Polycarbonate substrates |
November 9, 2004 |
| Polycarbonate substrates having low concentration of defects are disclosed. The substrates are suitable for producing molded articles characterized by low cloudiness. |
| 6720406 |
High-purity polymer granules and method for the production thereof |
April 13, 2004 |
| A process for producing polymer pellets is disclosed. The process that is particular suitable for making polycarbonate pellets entails extruding a polymer melt, cooling the extrudate by contacting it with a cooling fluid and pelletizing the solidified polymer. The process is characterize |
| 6696542 |
Polycarbonate substrates |
February 24, 2004 |
| Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexanone, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from |
| 6696383 |
Double-metal cyanide catalysts which can be used to prepare polyols and the processes related th |
February 24, 2004 |
| The present invention is directed to double metal cyanide catalysts ("DMC") which can be used to prepare polyols. DMC catalysts of the present invention are prepared by combining i) at least one metal salt; ii) at least one metal cyanide salt; iii) at least one organic complexing ligand; |
| 6491846 |
Process for the in-situ production of polyol blends, the in-situ produced polyol blends, and the |
December 10, 2002 |
| This invention relates to a process for the in-situ production of a blend of a polyether monol and a polyether polyol. This process comprises introducing a monol (S.sub.i) and a double metal cyanide (DMC) catalyst into a reaction vessel, feeding an epoxide mixture into the vessel and |
| 6320066 |
Amino-functional urea-alkoxysilanes, a method for the production thereof and their use |
November 20, 2001 |
| A water-soluble compound suitable for coating a variety of substrates is disclosed. The compound is prepared by reacting a diisocyanate with a diamino alkoxysilane, optionally also with a nonionic hydrophilic compound. Suitable substrates include oxides in solid form, glass, mineral |
| 5900454 |
Aqueous dispersions, process for the production thereof and use thereof |
May 4, 1999 |
| Aqueous dispersions comprising emulsified polyolefins and metal salts of phosphoric acid esters which are useful for sizing glass fibers. |
| 5811480 |
Size composition, sized glass fibers and use thereof |
September 22, 1998 |
| Size compositions for glass fibers which contain, in addition to polyepoxide, polyester or polyurethane film formers; amino - or epoxysilanes, or both; monomeric, aromatic di- or polycarboxylic acids and conventional size components. |
| 5340879 |
Polymer resins and use thereof |
August 23, 1994 |
| The invention relates to polymer resins which are dispersible or soluble in water, wherein the resin is an amorphous, chlorinated, chemically modified copolymer or terpolymer prepared from polyethylene, polybutene and/or polypropylene and having an amorphous polypropylene content of at l |
| 4299595 |
Method of operating a cyclical pressure-swing adsorption installation |
November 10, 1981 |
| A method of operating a multi-adsorber pressure-swing adsorber installation in which each adsorber is, in a given cycle, operated for a plurality of time slots in an adsorption stage, subjected to a plurality of pressure-relief phases over corresponding time slots by pressure equaliz |
| 4013755 |
Filtration of solid-containing titanyl sulfate solutions |
March 22, 1977 |
| In the production of a solid-free solution of titanyl sulfate by digesting ilmenite or titanium slag with sulfuric acid, and filtering the resulting solid-containing solution of titanyl sulfate to separate the solids, the improvement which comprises filtering the solution under a pressur |
| 3981978 |
Working up aqueous titanium dioxide hydrate suspensions |
September 21, 1976 |
| In the recovery of titanium dioxide by subjecting an aqueous titanium dioxide hydrate suspension to at least one stage of filtering and washing to form a washed filter cake, adjusting the composition and calcining the adjusted and washed filter cake, the improvement which comprises filte |
