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WO/1992/013569A1 |
The structure and the manner of manufacture of polymeric conjugates of cyclosporin, characterized in that they as polymeric carriers contain 40-700 polymerized monomeric units composed from 20-99 % mol. biologically inert hydrophilic uni...
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WO/1992/011300A1 |
An improved soft contact lens material, existing as a hydrogel, is formed by a polymer containing a fluorinated monomer, a hydroxyalkyl ester of acrylic or methacrylic acid, and an N-vinyl lactam. The polymer may also contain other hydro...
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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/1992/007879A1 |
Biologically active material covalently immobilized to azlactone-functional polymeric supports in the presence of polyanionic salt and azlactone quencher is provided. The biologically active material is immobilized rapidly and achieves b...
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WO/1992/007012A1 |
This invention provides novel azlactone-functional oligomers of 2-alkenyl azlactones in which oligomerization has occurred predominantly via the 2-alkenyl group. Oligomerization of the 2-alkenyl group provides oligomers having 2 to 15 me...
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WO/1992/002572A1 |
The present invention is directed to a radiation-curable liquid composition that includes an associative ethylenically unsaturated reactive blend, a resinous poly-(meth)acrylate oligomer and optionally an inert thermoplastic material. Th...
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WO/1992/001008A1 |
The invention concerns a method for the preparation of water-swellable products, using very fine particles of water-swellable polymers, characterized by the following steps: (a) very fine particles of water-swellable polymer are disperse...
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WO/1992/001007A1 |
Polymerisable materials produced by the reaction of a pyrrole and an unsaturated or polymerisable aldehyde, preferably a beta-unsaturated aldehyde. Polymers made from the above-described polymerisable material and copolymers formed from ...
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WO/1991/018929A1 |
What is described herein is an improved precipitation polymerization process and copolymer products produced thereby. The process herein is carried out by charging a reactor with a solvent in which the copolymer product is substantially ...
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WO/1991/018303A1 |
The present invention relates to a method for fabricating an optical lens with refraction index modulation, characterized in that, starting from a transparent hydrophilic polymer lens of the hydrogel type, previously shaped, said lens is...
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WO/1991/016057A1 |
Colonic-targeted oral drug dosage forms composed of a drug confined within a crosslinked hydrogel that exhibits pH-dependent swelling and is composed of an ionizable comonomer such as acrylic acid, a nonionizable comonomer such as an acr...
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WO/1991/015947A1 |
What is provided herein is a method for preparing a product which comprises discrete microdroplets of an oil in water stabilized by in situ polymerization of a water-soluble vinyl monomer. The method comprises dispersing the oil in water...
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WO/1991/015526A2 |
The invention provides acrylamide polymers that, when mixed with water solvent, provide thermoreversible solutions that form low viscosity melts at temperatures separated by a third region of maximum viscosity.
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WO/1991/015522A1 |
An uncrosslinked, water-soluble polyvinylpyrrolidone having a K-value in excess of 120 and containing less than about 0.1 percent by weight of residual monomer. A method for preparing the high molecular weight polyvinylpyrrolidone is als...
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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/1991/013919A1 |
This invention relates to a radiation-curable monoethylenically unsaturated liquid non-aqueous composition whereby the composition comprises an ionomeric composition comprising a monoethylenically unsaturated acid wherein at least a port...
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WO/1991/009888A1 |
The invention relates to copolymers with an average content of 1.25 to 30 functional groups per molecule and an average molecular weight of from 1500 to 6000 which can be produced by radical solution polymerisation at 130 to 200 �C fro...
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WO/1991/009067A2 |
Water-soluble, amphoteric grinding and/or dispersion agent for aqueous mineral suspensions with the formula (I) having the general form: -(A)p-(B)q-(C)r, where (A) is an anionic ethylene monomer with carboxylic function, (B) is a non-ion...
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WO/1991/009061A2 |
High-temperature oil-resistant elastomers are prepared from butadiene alkenylpyridine copolymers, butadiene-acrylate copolymers, and copolymers of butadiene with 1,3-dienes containing fluorine. The unsaturated olefinic backbone and penda...
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WO/1991/007449A1 |
Polymers comprising recurring units represented by structures (1), (2) and (3), where R?1¿, R?2¿, D, J, Y, a, b, and c are as defined herein are useful for controlling wandering of filter dyes in photographic elements.
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WO/1991/002011A1 |
Phosphonomethylated polyvinyl amines containing characteristic structural elements of formula (I), where R?1� is H, C�1? to C�6? alkyl or (II) and X is H, an alkali metal equivalent, ammonium equivalent or alkaline earth metal equi...
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WO/1991/002013A1 |
Curable bisimide compositions containing at least one biscitraconimide having general formula (I), wherein D is a divalent group, R is CH2-R1, and R1 is independently selected from hydrogen and alkyl groups having 1-18 carbon atoms; at l...
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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/1991/000302A1 |
What is described herein is a precipitation polymerization process and terpolymer products produced thereby. Polymerization is carried out in a reaction mixture of a vinyl lactam, e.g. vinyl pyrrolidone or vinyl caprolactam, a polymeriza...
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WO/1990/014314A1 |
Water-soluble copolymerizates obtained by polymerization of the following characteristic monomers: (a) 99 to 50 wt.% of monoethylenically unsaturated carboxylic acids with 3 to 8 carbon atoms or their salts and (b) 1 to 50 wt.% of N-viny...
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WO/1990/013577A1 |
The invention relates to the production of high molecular weight vinyl lactam-quaternized amino acrylamide copolymers having less than 0.1 % residual unreacted monomer, which comprises: subjectinmg the monomers to solution polymerization...
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WO/1990/013813A1 |
A method and apparatus are presented for the casting of gradient gels, without voids, in confined support structures such as thin slab-type configurations. Furthermore, by using a differential activation scheme for the casting, the metho...
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WO/1990/012041A1 |
What is described herein is a precipitation polymerization process and copolymer products produced thereby. Polymerization is carried out in a reaction mixture of a vinyl lactam, e.g. vinyl pyrrolidone or vinyl caprolactam, and a polymer...
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WO/1990/006344A1 |
The invention concerns the use of copolymers containing amino groups in aqueous, water-soluble solutions as temporary coatings in paint spray booths. The compositions are obtained by the copolymerization of (a) 15-90 % by wt. of a nitrog...
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WO/1990/005131A1 |
The invention relates to 5-oxo-3-pyrrolidinecarboxylic acid derivatives having structural formula (I), wherein X is selected from the group (a), (b) and (c), R2 and R3 are each H or CH3, and R1 is H or a hydrocarbon radical having from 1...
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WO/1990/003406A1 |
The invention discloses the processes and materials for treating materials to minimize the deposition of proteins and other molecules, and for removing proteins and other molecules from materials. New copolymers containing polyethylene o...
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WO/1990/003368A2 |
A cross-linked polymer-supported 4-(N-benzyl-N-methylamino)pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer-supported catalyst is characterized by the sus...
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WO/1990/003367A2 |
A cross-linked polymer-supported 4-(N-benzyl-N-methylamino)pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer-supported catalyst is characterized by the sus...
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WO/1990/001920A1 |
The invention relates to a hydrolysis resistant, high molecular weight polymer represented by formula (I), wherein R is alkylene having from 3 to 8 carbon atoms which is optionally substituted with lower alkyl; R1 and R2 are each hydroge...
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WO/1989/008021A1 |
Stereolithographic method of forming a three-dimensional thin-walled object is comprised of repeatingly exposing surface of reservoir of liquid ultraviolet-curable ethylenically unsaturated material to actinic light in or near ultraviole...
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WO/1989/006246A1 |
Water-dilutable vinyl copolymers containing side chains contain groups (gamma) of formula -X-alk-Y-, where alk stands for alkyls with 2 to 6 carbon atoms, hydroxy-substituted alkyls with 3 to 6 carbon atoms, or alkyls with 4 to 6 carbon ...
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WO/1989/005829A1 |
Pressure-sensitive copolymers based on acrylic monomers are provided with high adhesive performance characteristics by the inclusion of a synergistic amount of an N-vinyl lactam monomer and a glycidyl monomer with the bulk of the monomer...
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WO/1989/003864A1 |
alpha-Substituted acrylic acid esters, their polymers and adhesives therefrom, and methods of synthesizing these compounds. The compounds of the invention are useful as intermediates in the synthesis of isocyanato esters and can be polym...
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WO/1989/003386A1 |
Ultraviolet light absorbing, polymerizable phenothiazine and azaphenothiazine monomers, copolymers thereof and articles of manufacture, including lenses, optical devices, plastic films and hydrogels, constructed therefrom.
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WO/1988/007062A1 |
Azlactone-functional polymer beads are useful reactive supports for the attachment of functional materials to provide novel adduct beads. The adduct beads are useful as complexing agents, catalysts, polymeric reagents, chromatographic su...
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WO/1988/007061A1 |
The invention relates to highly filterable polyvinyl polypyrrolidone particles and to the process for improving filterability of standard polyvinyl polypyrrolidone granules, wet cakes and slurries, which comprises heating granular polyvi...
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WO/1988/005433A1 |
Cross-linking reagents which are highly specific for sulphydryl groups and react with thiols at an excellent rate. The essential feature of the reagents is at least one vinyl group conjugated with an aromatic nitrogen heterocycle. Partic...
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WO/1988/003194A1 |
A process for making paper which comprises making paper from a pulp slurry containing a neutral sizing agent and, if necessary, a filler and containing as a paper quality improver a cationic polymer prepared by copolymerizing an acrylami...
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WO/1988/001627A1 |
Novel water soluble D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the D-threo-(1,1'-dihydroxy-1-p-nitrophenyliso...
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WO/1987/007621A1 |
Ionic copolymers exhibiting uniform, gel-free solution viscosity and a controllable melt viscosity and hot melt tension are prepared by copolymerizating in an oil phase a nonionic monomer (such as styrene or an alkylacrylate) with an ion...
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WO/1987/006595A1 |
Novel water soluble alpha-methyl-(2-methylpropyl)benzene acetic acid in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the alpha-methyl-(2-methylpropyl)benzene acetic acid and to the p...
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WO/1987/005914A1 |
A self-doped conducting polymer having along its backbone a pi-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted...
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WO/1987/002041A1 |
A soluble acrylic copolymer is obtained by copolymerising a monomer in an amount greater than 3 to 30% of the total monomer weight and comprising at least 2 polymerisable, olefin-unsaturated double links, monomers containing functional g...
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WO/1987/000537A1 |
Method of producing high molecular weight copolymers from vinyl monomers such as vinylpyridine and styrene by emulsion polymerization which comprises combining the monomers with a particular surfactant, a polymerization initiator in an a...
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WO/1986/003501A1 |
Process for copolymerization of vinylpyrrolidone and maleic anhydride in the presence of organic solvent, catalyst and between about 0.1 and 1.0 weight % water.
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