| Patents for C08G 64 - Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule (9,881) |
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| 07/12/2000 | EP0880553B1 Increasing the molecular weight of polycondensates |
| 07/11/2000 | US6087468 Method of branching and cross-linking a polycarbonate resin |
| 07/09/2000 | CA2293960A1 A process for the preparation of aliphatic oligocarbonate diols from dimethyl carbonate and aliphatic diols |
| 07/06/2000 | WO2000039191A1 Polycarbonates with a low yellowness index |
| 07/06/2000 | WO2000039172A1 Process for obtaining lower molecular weight poly(alkylene carbonate) from higher molecular weight poly(alkylene carbonate) |
| 07/04/2000 | US6083521 Drugs and polyethylene carbonates |
| 06/29/2000 | WO2000037562A1 Use of polycarbonates containing iodine and/or bromine for moulded parts with high x-ray contrast and moulded parts produced with same |
| 06/29/2000 | WO2000037551A1 X-ray contrasting moulded part with improved long-term stability |
| 06/29/2000 | WO2000037531A1 Method for the preparation of bisphenol-a polycarbonate with reduced levels of fries |
| 06/29/2000 | WO2000037530A1 Use of oligomeric iodinated polycarbonates |
| 06/29/2000 | CA2355647A1 Use of oligomeric iodinated polycarbonates |
| 06/29/2000 | CA2355142A1 Use of polycarbonates containing iodine and/or bromine for moulded parts with high x-ray contrast and moulded parts produced with same |
| 06/29/2000 | CA2355139A1 X-ray contrasting moulded part with improved long-term stability |
| 06/28/2000 | EP1012202A1 Catalyst system for producing polyalkylene carbonates |
| 06/28/2000 | CN1257885A Process for preparing high-molecular aliphatic polycarbonate |
| 06/28/2000 | CN1257753A Process for preparing composite catalyst of rare-earth complex |
| 06/27/2000 | US6080833 Bis(hydroxyalkoxylated) 1,1'-spirobiindan polycarbonates and polyesters polymers and curable compounds such as bis(acrylated alkoxy)spirobiindans; also polyamides and polyimides containing spirobiindan groups |
| 06/22/2000 | WO2000035847A1 Process for the manufacture of bisphenol-a |
| 06/21/2000 | CN1257520A Silicon-based polycarbonates |
| 06/15/2000 | WO2000014141A8 Monocarboxylic acid-terminated polymers of carbon dioxide and an alkylene oxide |
| 06/14/2000 | EP1008608A1 Branched polycarbonate resin and process for the preparation thereof |
| 06/14/2000 | EP0655013B1 Gas separations utilizing glassy polymer membranes at sub-ambient temperatures |
| 06/07/2000 | EP1006141A1 Polysilanes and process for producing the same |
| 06/06/2000 | US6072011 Useful as thermoplastic molding resins; solvent resistance, low temperature impact strength, improved processing and flame retardance |
| 06/02/2000 | WO2000031168A1 Dyed molding |
| 05/31/2000 | EP1004609A2 Aromatic polycarbonate |
| 05/31/2000 | CN1052993C 热塑性树脂组合物 The thermoplastic resin composition |
| 05/31/2000 | CN1052988C Process for producing aromatic polycarbonate |
| 05/30/2000 | US6069224 Electrophotographic photoconductor and aromatic polycarbonate resin for use therein |
| 05/25/2000 | WO2000029461A1 Method for conducting solid state polymerization of polycarbonates |
| 05/24/2000 | EP1002820A1 Method and device for manufacturing polycarbonate |
| 05/23/2000 | US6066700 Process for the production of polysiloxane/polycarbonate block co-condensation products |
| 05/23/2000 | US6066428 Electrophotographic photoconductor and aromatic polycarbonate resin for use therein |
| 05/18/2000 | WO2000027902A1 Method for enhancing crystallinity of polycarbonates |
| 05/18/2000 | WO2000027782A1 New method for making photocurable halofluorinated acrylates |
| 05/18/2000 | CA2350539A1 New method for making photocurable halofluorinated acrylates |
| 05/17/2000 | EP1000106A1 Copolycarbonates with an idane bisphenol base |
| 05/17/2000 | EP1000105A1 Copolycarbonates with an indan bisphenol base |
| 05/16/2000 | US6063894 Process for purifying polymers using ultrasonic extraction |
| 05/11/2000 | WO2000026276A2 Method of manufacturing polycarbonates |
| 05/11/2000 | WO2000025826A1 Lactone bearing absorbable polymers |
| 05/11/2000 | CA2349346A1 Lactone bearing absorbable polymers |
| 05/10/2000 | CN1252817A Process for producing polycarbonate resin |
| 05/09/2000 | US6060577 Polycarbonates derived from alicyclic bisphenols |
| 05/09/2000 | US6060576 Melt blending, under non-reactive conditions, an amorphous precursor polycarbonate such as a bisphenol a polycarbonate with one or more other monomers which may include a spiro(bis)indane bisphenol and/or a phenylindane bisphenol |
| 05/04/2000 | WO2000024806A1 Purification of solutions containing polycarbonate |
| 05/04/2000 | WO2000024805A1 Processable polycarbonates containing alkyl carbonate end groups |
| 05/04/2000 | WO2000024672A1 Phosgene with poor carbon tetrachloride content |
| 05/03/2000 | EP0996658A1 Method for producing polycarbonate |
| 05/03/2000 | EP0961801A4 Monomers derived from hydroxy acids and polymers prepared therefrom |
| 05/02/2000 | CA2170019C A porous, crystallized, aromatic polycarbonate prepolymer, a porous crystallized aromatic polycarbonate, and production methods |
| 04/27/2000 | WO2000023499A1 Continuous interfacial method for preparing aromatic polycarbonates |
| 04/27/2000 | WO2000023498A1 Copolycarbonate preparation by solid state polymerization |
| 04/27/2000 | WO2000023496A1 Method for preparing polymers by solid state polymerization |
| 04/27/2000 | DE19849186A1 Additive zur Verbesserung der Barriereeigenschaften von Polymeren Additives for improving the barrier properties of polymers |
| 04/27/2000 | DE19849004A1 High purity polycarbonate is produced using coalescer with hydrophilic packing to separate wash liquid from organic product solution after first washing step |
| 04/27/2000 | DE19848668A1 Phosgene with a low tetrachloro-carbon content for production of poly-carbonate or polyester-carbonate, made by ensuring that the gas leaves the phosgene generator at relatively low temperature and pressure |
| 04/26/2000 | EP0995768A2 Process for production of aromatic polycarbonate resin and molded article of aromatic polycarbonate resin |
| 04/26/2000 | EP0995737A1 Process for producing 3,3,5-trimethylcyclohexylidenebisphenols |
| 04/20/2000 | DE19847051A1 Production of high-purity polycarbonate, used e.g. for optical data memories, lenses and prisms, involves washing the polymer solution with aqueous liquid, heating to give a clear solution and filtering off solids |
| 04/19/2000 | EP0993481A1 Method for producing branched polycarbonates |
| 04/18/2000 | CA2010248C Recovery of double metal cyanide complex catalyst from a polymer |
| 04/13/2000 | DE19948961A1 A branched polycarbonate resin especially useful for blow molding, sheet extrusion, and injection molding has greatly decreased gel content, excellent transparency, mechanical strength, and room temperature impact resistance |
| 04/12/2000 | EP0992522A1 Carbonic diester, aromatic polycarbonate, production apparatus, and process for production |
| 04/12/2000 | EP0991721A2 Use of polycarbonates containing iodine phenyl carbonate for producing special shaped parts |
| 04/12/2000 | EP0991697A1 Functionalized poly(alkylene carbonate), and use thereof |
| 04/12/2000 | EP0991693A1 Biphasic polymerization process |
| 04/12/2000 | EP0991656A1 Method for producing phosphonium phenolates |
| 04/11/2000 | US6048521 Copolymers of tyrosine-based polyarlates and poly(alkylene oxides) |
| 04/06/2000 | WO2000018822A1 Copolycarbonate and process for producing the same |
| 04/05/2000 | CN1051096C Oligomers, their uses and formulations |
| 03/29/2000 | EP0984997A4 Silicon-based polycarbonates |
| 03/28/2000 | US6043334 Polycarbonate resin, crosslinked polycarbonate resin and electrophotographic photoreceptor |
| 03/28/2000 | US6042920 A polycarbonate or polycarbonateether of bisphenol, alkylene oxide units and dihydroxyspiro-2,2-bisindane; low cg (stress optical coefficient in the glass phase), low birefringence, high processability and ductility; optical recording media |
| 03/22/2000 | EP0987285A1 Process for the preparation of aromatic polycarbonate |
| 03/22/2000 | EP0986599A2 Process for the preparation of copolyesters |
| 03/16/2000 | WO2000014141A1 Monocarboxylic acid-terminated polymers of carbon dioxide and an alkylene oxide |
| 03/15/2000 | EP0985709A1 Reversible thermotropic composition, its preparation and use |
| 03/15/2000 | EP0985696A1 Stabilized aromatic polycarbonate |
| 03/15/2000 | EP0984997A1 Silicon-based polycarbonates |
| 03/15/2000 | CN1247553A 聚碳酸酯片材 Polycarbonate sheet |
| 03/14/2000 | US6037467 Methods for preparing carbohydrate-containing hydrophilic polymers |
| 03/14/2000 | US6037437 Transesterification of molten mixture of aromatic dihydroxy compound and diaryl carbonate performed in two or more polymerizers connected through pipeline system |
| 03/14/2000 | US6037436 Process for preparing poly (2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate) |
| 03/09/2000 | WO2000012455A1 A method for preparing bisphenol a |
| 03/02/2000 | WO2000011086A1 Optical polycarbonate resin molding material and optical disk substrate |
| 03/01/2000 | EP0982340A1 Process for producing aromatic polycarbonate |
| 02/29/2000 | US6031063 Contacting in liquid or vapor state with a non-solvent which may be water, an alkanol or a mixture thereof and which is dialkyl carbonate-free |
| 02/29/2000 | US6031062 Method for preparing polycarbonates of enhanced crystallinity |
| 02/24/2000 | WO2000009582A1 Highly pure polycarbonates and method for producing same |
| 02/24/2000 | WO2000009578A1 Method and materials for fabrication of alumoxane polymers |
| 02/24/2000 | DE19836664A1 Very pure polycarbonate for making molding, e.g. for laser-readable optical or magneto-optical data storage medium, optical lens or prism, is produced by hot filtration after washing |
| 02/23/2000 | EP0980861A1 Salicylic ester derivatives and process for producing the same |
| 02/23/2000 | CN1049670C Narrow poly- and mono-dispersed anionic oligomers, and their uses, formulations and preparing process |
| 02/22/2000 | US6028164 Bioresorbable compositions for implantable prostheses |
| 02/22/2000 | US6028161 Polycarbonate copolymer and applications thereof |
| 02/22/2000 | US6028129 Increasing the molecular weight of polycondensates and stabilizing them, using diepoxides of sterically hindered amines |
| 02/22/2000 | US6027848 Layered photoreceptors with multiple transport layers |
| 02/22/2000 | US6027846 Electrophotographic photoconductor and aromatic polycarbonate resin for use therein |
| 02/17/2000 | WO2000008089A1 Optical quality copolycarbonates containing polyoxyalkylene carbonate units |