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WO/1994/021698A1 |
Novel fumarate- and fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.
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WO/1994/020556A1 |
Core-shell copolymer dispersions are disclosed whose shell contains hydrolyzable silicium-organic comonomers. The shell consists of a copolymer which contains: (a) 70 to 95 % by weight acrylic acid and/or methacrylic acid (C1-C10) alkyl ...
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WO/1994/018253A1 |
Novel fluorosiloxane-containing monomers are disclosed which are especially useful for the preparation of biomedical materials such as contact lenses.
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WO/1994/016748A1 |
The present invention relates to materials which comprise a surface having pendant groups of formula (I), in which the groups -B- are the same or different, preferably the same, and each is -CH2- or -C( = O)-, preferably -CH2-, R1 is hyd...
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WO/1994/015980A1 |
Novel siloxane macromonomers are disclosed which can be copolymerized with hydrophilic monomers or hydrophobic monomers to prepare polymeric materials useful as biomedical devices. The copolymers made from hydrophilic monomers exhibit go...
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WO/1994/014820A1 |
This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which pro...
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WO/1994/013716A1 |
The invention concerns copolymers made up of (a) 20-60 % by wt. of ethylenically unsaturated monomers with acid groups, (b) 40-80 % by wt. of ethylenically unsaturated glycerin derivatives in which one of the glycerin hydroxyl groups is ...
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WO/1994/010217A1 |
Bis(diallylamino) silanes of formula (I) where R1 and R2 are lower alkyl or phenyl groups are copolymerized with lower olefins and desilylated to exhibit amine functionality; they are receptive to dyes.
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WO/1994/009013A1 |
Ultraviolet curable polymerizable systems having a built-in secondary curing mechanism are disclosed. The polymerizable coating system is a one component system comprising at least one alkoxysilyl-urethane-acrylate or methacrylate, and a...
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WO/1994/006838A1 |
A process for producing an aqueous emulsion of a silicone graft copolymer by forming an emulsion of particles having a diameter of 0.5 mum or less from a silicone (macromonomer) having a radical-polymerizable functional group and another...
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WO/1994/004614A1 |
Porphyrins substituted with, for example, vinyl and acetylene groups are provided, along with polymers containing the same. In preferred embodiments, the substituted porphyrins are prepared by coupling halogenated porphyrins with anionic...
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WO/1994/003324A1 |
A process for preparing silicone hydrogel contact lenses where machining operations are employed to produce a lens having a desired final shape comprises: providing a monomeric mixture comprising a silicone-containing monomer, a hydrophi...
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WO/1994/000520A1 |
The present invention relates to aqueous liquid for primers which contain a copolymer mainly formed with a cationic monomer, an alkoxysilane monomer and an ethylenic unsaturated monomer in aqueous medium, wherein low viscosity and superi...
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WO/1993/023794A1 |
An energy sensitive composition comprising a monomeric organometallic complex essentially free of nucleophilic groups and which, upon exposure to energy, bonds to basic reactive sites on a substrate via the metal center, leaving the poly...
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WO/1993/023773A1 |
An oxygen permeable polymer material having both excellent oxygen permeability and good processability is provided. A process for the preparation of an oxygen permeable polymer material, which comprises polymerizing a mixture of a siloxa...
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WO/1993/022320A1 |
Compounds of formula (I), in which the groups R are hydrogen or C1-4 alkyl, n is from 2 to 4, X is alkylene, poly(ethoxy) or an aryl-containing group, Y is a valence bond or a divalent functional or heterocyclic group or a trivalent alky...
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WO/1993/021970A1 |
A method of reducing the extent to which microorganisms, particularly bacteria, will adhere to a surface, which comprises providing a surface having pendant groups of formula (I), in which each group R is the same or different and is alk...
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WO/1993/014882A1 |
The invention relates to a process for producing multi-layer paints of the 'basecoat/clearcoat' type, in which transparent coating varnishes are used which contain: (A) as a binder a self-crosslinkable polyacrylate resin which has, as a ...
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WO/1993/014097A1 |
The invention relates to novel methylene bisphosphonic acid derivatives carrying a styrene group attached to the methylene carbon. The novel compounds are useful e.g. for functionalizing polymers of styrene type, especially macroporous s...
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WO/1993/012055A2 |
Photocurable cyclobutarene compositions having a low dielectric constant, low moisture uptake, enhanced oxidative stability, good processability, good planarization, and a long shelf life are disclosed. These polymer compositions are use...
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WO/1993/010183A1 |
Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80 % by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a non-functionalised polymer containing a low Tg ...
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WO/1993/010182A1 |
Highly filled, curable compositions containing a curable liquid, e.g. methyl methacrylate; 20 to 80 % by weight of a finely divided inorganic filler of defined particle size, e.g. silica; a functionalised polymer containing a low Tg comp...
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WO/1993/010159A1 |
A polymeric dispersant having a low Tg polymer component, e.g. polybutadiene, and a pendant silylated group with hydrolysable groups capable of associating with and dispersing finely divided inorganic fillers. Curable compositions contai...
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WO/1993/009084A1 |
A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable f...
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WO/1993/009154A1 |
Improved silicone-containing hydrogels are disclosed with enhanced wettability comprising a silicone-containing monomer, at least one acrylic-containing hydrophilic monomer, and at least one vinyl-containing hydrophilic monomer.
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WO/1993/009155A1 |
Improved silicone-containing hydrogels are disclosed with enhanced wettability comprising a silicone-containing monomer, hydrophilic monomers, and a relatively non-polar ring-containing monomer able to be converted to a highly polar amin...
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WO/1993/008218A1 |
An aqueous polymer emulsion latex is claimed composed of particles comprising a vinyl polymer and a surfactant containing at least one hydrophobic moiety and at least one hydrophilic moiety and also carrying silicon moieties and amido fu...
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WO/1993/007862A1 |
Ionic compositions comprise an active ingredient absorbed within a network of internal pores defined by a plurality of polymeric particles. The particles are preferably crosslinked polymeric beads having a diameter in the range from abou...
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WO/1993/005085A1 |
Improved silicone-containing hydrogels with enhanced wettability comprising at least one silicone-containing monomer, and an equimolar amphoteric mixture of acid-containing comonomers and amine-containing comonomers are herein disclosed.
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WO/1993/001221A1 |
Polymers of one or more radical polymerisable monomers which polymer has pendant groups bearing a centre of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment...
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WO/1992/021632A2 |
Fluoroaluminosilicate dental cement glasses are treated with an aqueous silanol treating solution and optionally with an additional organic compound. The treated glasses form cements with improved strength. The silanol can be ethylenical...
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WO/1992/018582A1 |
Transparent light-emitting compositions comprise a mixture of a polymer, e.g. a poly (vinyl aromatic) hydrocarbon labelled with tritium and a first and preferably second organic compound. The first organic compound, which is at least par...
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WO/1992/014365A1 |
An antibacterial containing a vinylbenzylphosphonium salt represented by general formula (I) and/or a polymer thereof as the active ingredient. In formula (I) R�1?, R�2? and R�3? represent each hydrogen, linear or branched C�1? t...
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WO/1992/011301A1 |
A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a non-ionic ethylenically unsatur...
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WO/1992/009639A2 |
A new class of polymerizable surfactants, useful for modifying the surfaces of polymeric objects, which are described by the formula: DC[AxBy] wherein A is at least one ethylenically unsaturated hydrophilic monomer, B is at least one eth...
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WO/1992/009421A2 |
When molding shaped articles such as contact lenses from monomeric mixtures containing silicone monomers and hydrophilic monomers, the wettability of the resulting article is improved by using a mold material produced from a resin compri...
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WO/1992/007885A1 |
Cross-linked copolymers which are obtainable by polymerising a neutral diluent monomer or monomers, a monomer or monomers bearing a centre of permanent positive charge, and a bifunctional and/or trifunctional cross-linking agent, are sui...
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WO/1992/006122A1 |
Organophosphonic polymers of general formula (I) where Y is a methyl or ethyl group or hydrogen and Z is hydrogen, the ammonium group, an alcaline metal or an alcaline earth metal. A method for producing these polymers comprises three st...
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WO/1992/004357A1 |
Silyl derivatives of eugenol include compositions of formula (I) where R1, R2 and R3 are independently selected from linear, branched, and cyclic hydrocarbon groups having a total of from one to about eight carbon atoms, except that wher...
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WO/1991/015527A1 |
The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicone-containing acrylic star polymers and macromonomers, preparation of these contact lenses and a therapeutic metho...
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WO/1991/012555A2 |
The specification identifies dithiolenes which give good performance as the critical region of an optical switch. The dithiolenes have the formula shown in Figure 1 wherein: (A) the R groups, any two of which may be the same or different...
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WO/1991/007446A1 |
Anionically polymerizable monomers containing at least one silicon or titanium atom for polymeric photoresists for use in microlithography. The monomers are of formula (I), wherein A is -H or -CH=CH¿2?; X is a strong electron withdrawin...
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WO/1991/004288A1 |
A clinically-acceptable hydrophilic silicone-based soft gas permeable contact lens produced by subjecting the lens material to extraction with a hydrophilic, polar group-containing, organic solvent followed by replacement of the organic ...
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WO/1991/004283A1 |
A hydrophilic soft gas permeable contact lens having substantially improved clinical performance by the provision of a sufficient higher proportion of hydroxy acrylic units to silicon units in the lens surface layer, as compared to that ...
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WO/1991/001336A1 |
A method for producing an acidic, concentrated, polymeric emulsion that can be diluted and thereafter neutralized to provide a novel polymeric thickener is disclosed. The method comprises emulsion-polymerizing, in acidic aqueous media, a...
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WO/1991/000284A1 |
Silyl derivatives of 2,6-dimethyl-4-allyl phenol include compositions of formula (I), where R1, R2, and R3 are independently selected from alkyl and phenyl groups having up to about eight carbon atoms and/or are connected to form one or ...
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WO/1990/015082A1 |
The present invention includes a process for preparing a polymer having perfluorocyclobutane rings by the steps of (a) contacting monomers having at least two dimerizable perfluorovinyl groups; and (b) exposing the monomers to heat such ...
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WO/1990/015043A2 |
The present invention is directed to compounds having at least two perfluorovinyl groups and having a structure represented by the following formula (I): CF2=CF-X-R-(X-CF=CF2)m, wherein R represents an unsubstituted or inertly substitute...
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WO/1990/012042A1 |
A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having formula (I): and the prepolymer (F) having for...
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WO/1990/010037A1 |
A curable composition is prepared from an organic polymer having at least two hydrosilyl groups in its molecule, another organic polymer having at least one alkenyl group in its molecule, and a hydrosilylation catalyst. This composition ...
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