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2089 results about "Vinyl ether" patented technology

Divinyl ether is the organic compound with the formula O(CH=CH₂)₂. It is a colorless, volatile liquid that has mainly been of interest as an inhalation anesthetic. It is prepared by treating bis(chloroethyl) ether with base.

Thermoplastic fluoropolymer-coated medical devices

A medical device provided with at least a partial surface coating of a thermoplastic copolymer of tetrafluoroethylene and perfluoroalkylvinylether that is free of cross-linking monomers and curing agents. The fluoropolymer coating is preferably an amorphous thermoplastic, is highly inert and biocompatible, has elastomeric characteristics that provide desirable mechanical properties such as good flexibility and durability. These characteristics allow the coating to be considered “functionally transparent” because it withstands mechanical deformations required for the assembly, deployment, expansion, and placement of medical devices, without any adverse effect on the mechanical and biological functionality of the coated device. Further, its inertness, derived from the perfluorocarbon structure, contributes to its functionally transparent nature. The coating can be provided with various liquid or solid additives, can be loaded with large quantities of additives including a wide range of therapeutic agents, and has excellent drug elution characteristics when elutable additives are used. The desirable mechanical characteristics are surprising given the absence of cross-linking monomers and curing agents that would otherwise render such materials inadequately biocompatible. The perfluoroalkylvinylether may be perfluoromethylvinylether, perfluoroethylvinylether or perfluoropropylvinylether.
Owner:WL GORE & ASSOC INC

Acid sensitive ARC and method of use

A composition used to form an acid sensitive +E,uns a+EE nti+E,uns r+EE eflective +E,uns c+EE oating (ARC) includes a water soluble resin and a cross-linker. Radiation adsorptive components may be provided as part of the resin or, more preferably, as a separate dye. The composition may be applied on a substrate as a radiation adsorbing layer and additionally cross-linked to form an acid sensitive, water insoluble ARC on which a +E,uns p+EE hoto+E,uns p+EE atterning +E,uns r+EE esist (PPR) layer may be formed. Being acid sensitive, selected portions of an ARC formed from the composition may be removed by a suitable reversal of the cross-linking followed by a develop step, preferably with an aqueous developer, more preferably de-ionized water. The water soluble resin is preferably hydroxystyrene-sulfonated styrene copolymer, poly(2-isopropenyl-2-oxazoline), or poly(acrylic acid), the cross-linker is preferably an acetal diacid or a water soluble divinyl ether, and the dye is preferably 9-anthracene methanol or a squaric acid derivative. If a suitable +E,uns p+EE hoto+E,uns a+EE cid +E,uns g+EE enerator (PAG) is included then an ARC formed from such components may exhibit a photosensitivity similar to or even lower than that of the overlying PPR. The photosensitivity is preferably less than about 900 mJ / cm2, more preferably 100 mJ / cm2 or less.
Owner:IBM CORP

Curable liquids and inks for toys and food packaging applications

A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; and a polymerizable composition of the liquid consists essentially of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 selected from the group consisting of a vinlyether group, an allylether group, and a allylester group; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates. If the weight percentage of compounds B>24 wt %, then the weight percentage of compounds C>1 wt %, and all weight percentages of A, B, and C are based upon the total weight of the polymerizable composition. At least one polymerizable compound B or C is present in the polymerizable composition if the free radical curable liquid contains no initiator.
Owner:AGFA NV

Thermoplastic fluoropolymer-coated medical devices

A medical device provided with at least a partial surface coating of a thermoplastic copolymer of tetrafluoroethylene and perfluoroalkylvinylether that is free of cross-linking monomers and curing agents. The fluoropolymer coating is preferably an amorphous thermoplastic, is highly inert and biocompatible, has elastomeric characteristics that provide desirable mechanical properties such as good flexibility and durability. These characteristics allow the coating to be considered “functionally transparent” because it withstands mechanical deformations required for the assembly, deployment, expansion, and placement of medical devices, without any adverse effect on the mechanical and biological functionality of the coated device. Further, its inertness, derived from the perfluorocarbon structure, contributes to its functionally transparent nature. The coating can be provided with various liquid or solid additives, can be loaded with large quantities of additives including a wide range of therapeutic agents, and has excellent drug elution characteristics when elutable additives are used. The desirable mechanical characteristics are surprising given the absence of cross-linking monomers and curing agents that would otherwise render such materials inadequately biocompatible. The perfluoroalkylvinylether may be perfluoromethylvinylether, perfluoroethylvinylether or perfluoropropylvinylether.
Owner:WL GORE & ASSOC INC
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