Polymers from renewable 1,4:3,6-dianhydrohexitols (isosorbide, isomannide and isoidide): A review

Construction of functional aliphatic polycarbonates for biomedical applications

Water-soluble macromers including at least one hydrolysable linkage formed from carbonate or dioxanone groups, at least one water-soluble polymeric block, and at least one polymerizable group, and methods of preparation and use thereof are described. The macromers are preferably polymerized using free radical initiators under the influence of long wavelength ultraviolet light or visible light excitation. Biodegradation occurs at the linkages within the extension oligomers and results in fragments which are non-toxic and easily removed from the body. The macromers can be used to encapsulate cells, deliver prophylactic, therapeutic or diagnostic agents in a controlled manner, plug leaks in tissue, prevent adhesion formation after surgical procedures, temporarily protect or separate tissue surfaces, and adhere or seal tissues together.

Polymerizable biodegradable polymers including carbonate or dioxanone linkages

Disclosed herein is an isosorbide-based polycarbonate polymer comprising: an isosorbide unit, an aliphatic unit derived from a C14-44 aliphatic diacid, C14-44 aliphatic diol, or combination of these; and optionally, an additional unit different from the isosorbide and aliphatic units, wherein the isosorbide unit, aliphatic unit, and additional unit are each carbonate, or a combination of carbonate and ester units. Also disclosed are a thermoplastic composition and an article comprising the isosorbide-based polycarbonate.

Isosorbide-based polycarbonates, method of making, and articles formed therefrom

A polycarbonate comprising ether diol residues which can be produced from a carbohydrate of the formula: (1) and comprising diol residues of the formula: -O-(CmH2m)-O- (2) (wherein m is an integer of 2 to 12), wherein the ratio of ether diol residues to all the diol residues is in the range of 65 to 98 wt.%, the polycarbonate having a glass transition temperature of 90°C or higher.

Polycarbonate and process for producing the same

The present invention relates to high molecular weight thermoplastic hexahydro-furo-(3,2-b)-furane-3,6-diol based copolycarbonates useful as molding resins and to a method for their preparation.

Thermoplastic polycarbonates, their preparation and their use as shaped articles and films

The present invention is directed to cross-linkable, thermoplastically processable, segmented, high molecular weight polycarbonate elastomers, to the process for their preparation and to their use in their cross-linked form.

Cross-linkable polycarbonate elastomers, a process for their preparation and use for packaging medicines

The present invention relates to a process for the preparation of bis-carbonic acid aryl esters of polyester-diols, lengthened via --OCOO-- groups, characterized in that polyester-diols with molecular weights Mn (number-average) of over 250, preferably over 600, are heated with carbonic acid bis-aryl esters at temperatures between about 100° C. and 200° C., preferably between about 110° C. and 180° C., in vacuo below about 35 mm Hg, preferably between about 25 and 1 mm Hg, in the presence of catalysts, less than one mol of carbonic acid bis-aryl ester being employed per OH group of the polyester-diol and the hydroxyaryl compounds formed being distilled off. The invention further relates to the bis-carbonic acid aryl esters of polyester-diols lengthened via --OCOO-- groups obtained according to the instant invention and their use for the preparation of polyester diol bis-diphenol carbonates, lengthened via carbonate groups, characterized in that polyester-diol bis-aryl carbonates are reacted with a diphenol at a temperature of from about 100° to about 200° C. in vacuo below about 35 mm Hg in the presence of a catalyst, wherein more than 1 mol of diphenol is employed per mol of carbonic acid aryl ester groups of the polyester-diol bis-aryl carbonate, lengthened via carbonate groups, and the resulting hydroxyaryl compound is distilled off. The invention finally relates to the polyester-diol bis-diphenol carbonates, lengthened via carbonate groups obtained according to the instant invention and their use for the preparation of polyester/polycarbonates and the polycarbonate/polyesters so prepared.

Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates

Verfahren zur Herstellung von Kohlensaure- bisdiphenolestern von uber Carbonat- Gruppen- verlangerten Polyalkylenoxiddiolen und ihre Verwendung zur Herstellung von hochmolekularen, segmentierten, thermoplastisch verarbeitbaren Polyather- Polycarbonaten. A process for producing carbonic acid bisdiphenolestern of about carbonate group Polyalkylenoxiddiolen extended and their use for the production of high molecular weight, segmented, thermoplastically processible polyether polycarbonates. Man erhitzt Polyalkylenoxiddiolen mit Kohlensaure- bis-arylestern im Vakuum bei Temperaturen zwischen 100 und 200°C wobei pro OH-Gruppe des Polyalkylenoxiddiols weniger als 1 Mol Kohlensaure- bis-arylester eingesetzt wird. The mixture is heated with carbonic Polyalkylenoxiddiolen bis-aryl esters in a vacuum at temperatures between 100 and 200 ° C wherein per OH group of Polyalkylenoxiddiols less than 1 mol of carbonic acid aryl ester is to used. Anschliessend werden Diphenolen zugesetzt. Subsequently diphenols are added. Das erhaltene Reaktionsprodukt wird mit anderen Diphenolen und mit Phosgen bei pH-Werten zwischen 9 und 14 und Temperaturen zwischen 0° und 80°C zu Polyather-Polycarbonaten umgesetzt. The obtained reaction product is reacted with other diphenols and with phosgene at pHs 9-14 and temperatures of between 0 ° and 80 ° C to polyether polycarbonates.

Process for the preparation of bis-carbonates from diphenols and polyoxyalkylene glycols lengthened by carbonate groups and their application in the preparation of macromolecular thermoplastic polycarbonate polyether block copolymers.

A process is disclosed for preparing aqueous, oxidatively-drying alkyd resins. The resins are useful as binders in aqueous lacquers and coating compositions.

Manfred Dr Schreckenberg

Papers

Thermoplastic polycarbonates, their preparation and their use as shaped articles and films

Cross-linkable polycarbonate elastomers, a process for their preparation and use for packaging medicines

Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates

Process for the preparation of bis-carbonates from diphenols and polyoxyalkylene glycols lengthened by carbonate groups and their application in the preparation of macromolecular thermoplastic polycarbonate polyether block copolymers.

Process for the preparation of aqueous, oxidatively drying alkyd resins and their use in or as aqueous lacquers and coating compounds