Abstract: The claimed invention is directed to a molecularly imprinted support formed from at least two distinct acylic monomers and at least one imprinted molecule. The support comprises beads having a uniform surface for reproducible presentation thereon.

Abstract: This invention relates to high molecular weight terpolymers of maleic anhydride, C.sub.1 -C.sub.4 alkyl vinyl ethers and isobutylene, and to a solvent-free process for making such terpolymers, which are particularly useful as starting materials for denture adhesives.

Abstract: Water-reducible resins, neutralized resins, and derivatized resins useful for water-borne and solvent-based coatings and inks, powder coatings, and anti-corrosive coatings are disclosed. The water-reducible resins are copolymers of a vinyl aromatic monomer, a propoxylated allyl alcohol, and an acrylic acid monomer. These low-molecular-weight resins uniquely contain both hydroxyl and acid functional groups, and allow controlled curing with a variety of crosslinkers in coating systems. Coatings of the invention are useful in many applications, e.g., automotive basecoats, industrial appliance coatings, and wood finishes.

Abstract: The present invention relates to a non water-soluble pharmaceutical carrier gel which adheres to mucosal surfaces and body tissues upon application and forms a film, providing protection and delivery of pharmaceutical to the site of application, surrounding body tissues, and bodily fluids. The gel comprises a volatile or diffusing nonaqueous solvent and at least one non-water-soluble alkyl cellulose or hydroxyalkyl cellulose. A bioadhesive polymer may also be added. The gel provides an effective residence time with ease of use.

Abstract: The present invention is directed to a porous polymer micro-particle, in the form of broken spheres, open to a porous oleophilic interior surface area, having a high oil and water absorbency and an apparent bulk density of about 0.02 to about 0.1 grams/cc.

Abstract: The present invention provides a novel, optionally surfactant-free process for controlling particle number, particle size, and/or particle size distribution. The method of the invention also significantly improves monomer to polymer conversion rates, as well as, increases the level of polymer solids which can be emulsified/dispersed in water without polymer flocculation. Specifically, the improved process provides an aqueous dispersion of up to about 48% polymer solids in water in the absence of surfactant. The resulting fluoropolymers dispersions may be used in resin and coating applications.

Abstract: The present invention relates to the use of surfactants for improving the drying properties of hydrophilic, highly swellable hydrogels in the course of drying with the aid of contact dryers.

Abstract: In a process for the polymerization of aqueous ethylene vinyl acetate emulsions wherein the polymerization is carried out in the presence of a stabilizing system comprising polyvinyl alcohol and a surfactant, the improvement which comprises using a stabilizing system consisting essentially of 2 to 8% polyvinyl alcohol and 0.25 to 4% of at least one surface-active compound comprising the addition products of 50 to 70 moles of ethylene oxide adducted to straight-chained or branch-chained alkanols or alkylphenols containing 6 to 22 carbon atoms in the alkyl group and having an HLB value equal to or greater than 18.0, the amounts being based on total vinyl acetate.

Abstract: The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium.The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.

Abstract: The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium. The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.

Abstract: This invention relates to high molecular weight terpolymers of maleic anhydride, C.sub.1 -C.sub.4 alkyl vinyl ethers and isobutylene, and to a solvent-free process for making such terpolymers, which are particularly useful as starting materials for denture adhesives.

Abstract: An apparatus for dispensing a predetermined quantity of a multi-component composition in which the composition includes a first component and a second component in a predetermined weight to weight ratio, and in which the first component and said second component undergo an undesirable chemical reaction with each other when brought into contact with each other. The apparatus includes a receptacle for storing one of the first component or the second component that is adapted to receive the other of the first component or the second component from a separate source to form the predetermined quantity of multi-component composition having the first component and the second component in a predetermined weight to weight ratio.

Abstract: Perfluoroelastomer compositions of improved processability are provided which have reduced levels of ionized or ionizable polymer endgroups.

Abstract: Copolymers of tetrafluoroethylene and perfluoro(ethyl vinyl ether) having perfluoro(ethyl vinyl ether) content of at least 3 wt % exhibit excellent toughness even at melt viscosities of no greater than 25.times.10.sup.3 Pa.s. The copolymers can advantageously be made by aqueous dispersion copolymerization of the monomers in the absence of alkaline buffer and preferably in the absence of organic solvent.

Abstract: Permanently stain resistant nylon and cellulosic fibers, and a method to impart permanent stain resistance to polyamide or cellulosic fibers, by covalently binding a stain resistant composition to a linking compound that has been covalently attached to the fiber are disclosed. This invention represents a significant advance in the art of textile treatments in that the covalently linked stain resist treatment is not removed after a series of alkaline shampooins. This invention is particularly useful in the preparation of commercial grade carpets for heavy traffic areas that will not lose their stain resistance after frequent shampooing.

Abstract: In a process for producing a vinylidene fluoride resin by polymerizing vinylidene fluoride or a mixture of vinylidene fluoride and a vinyl monomer copolymerizable with vinylidene fluoride, a portion of an iodide compound represented by the formula: X-R.sub.f -X wherein R.sub.f is a divalent organic group containing at least two divalent fluoroalkyl ether groups: and X's are independently an iodine atom or a fluorine atom, provided that at least one of the X's is an iodine atom; is added to start the polymerization, and the remainder of the iodide compound is further added dividedly at least twice in the course of the polymerization. This process enables to obtain a vinylidene fluoride resin having a viscosity-average molecular weight of 150,000 or more and also having a superior water repellency. This resin has good mechanical strength and release properties and also can be well processed into films.

Abstract: A method for the independent, reversible, optical determination of the pH value and the ionic strength of an aqueous sample with the aid of two different sensors in accordance with the fluorescence method, in which method two optical sensors, which are each composed of polymers of different structure but each contain the same fluorescent dye and which each consist of a coated material composed ofa) a carrier material, to which there is appliedb) at least one water-insoluble layer of a polymer comprising at least one hydrophilic monomer (A) from the group of substituted olefins, andc) a proton-sensitive fluorescent dye which is bonded directly or via a bridge group to the spine of polymer b) or which is incorporated in polymer b),are brought into contact with an aqueous test sample, irradiated with exciting light, the fluorescence is measured and the pH values and the ionic strengths are calculated from the measured fluorescence intensities with reference to calibration curves.

Abstract: There is a need for colorers which are utilized in automotive interiors which offer good color stability as well as a high level of Neat and ultraviolet light resistance. It is particularly critical for polymers which are utilized in making skin compounds for automotive instrument and door panels to have excellent color stability as well as excellent heat and ultraviolet light resistance.

Abstract: A process for making hydroxy-functional resins based on acrylate, hydroxyalkylacrylate, and allyl monomers is disclosed. The key to the process is to add the hydroxyalkylacrylate monomer in an amount and manner effective to produce a resin that contains, without vacuum stripping, less than about 1 wt. % of residual unreacted allyl monomers. Eliminating the need to vacuum strip the allyl monomer reduces process costs and enables the synthesis of new resins. The hydroxy-functional resins are readily crosslinked with melamines, polyisocyanates, or epoxies to give thermoset polymers.

Abstract: The invention relates to a coating composition, a method of coating molded articles with the coating composition, and the molded articles so coated, particularly molded articles comprised of thermoplastic or thermoelastic plastics. The coating, in the form of a cured thin layer, is particularly optically clear, scratch-resistant, and weather-resistant. It is produced on the plastic substrate material by polymerization of a layer of flowable coating comprised of the coating material, which layer contains polyfunctional (meth)acrylic monomers, and said layer further contains, as a "leveling" agent, fluoroalkyl (meth)acrylates of formula I ##STR1## where R.sub.1 represents H or CH.sub.3, and R.sub.2 represents a fluorine-containing alkyl group with 2-20 C atoms.