Abstract: A aqueous ink for a ball-point pen which is stable over time and has high pigment dispersion stability, includes a pigment, a water-soluble organic solvent, water, xanthane gum of about 0.01 to about 0.2 wt. % and a sodium alginate of about 0.2 to about 0.6 wt. % of a total amount of the ink.

Abstract: An otherwise conventional powdered alginate impression material is improved by the admixture of flavoring in powdered form, rather than liquid form. By utilizing a powdered flavoring, rather than a liquid flavoring, the components of the dental impression material can remain totally in powdered form until mixed with water in an orthodontic office immediately prior to taking a dental impression. By providing the flavoring for the powdered alginate material in powdered form, the shipment of any component of the alginate impression material in liquid form is avoided. As a consequence, the powdered flavoring material for the alginate impression composition is not susceptible to liquid leakage and does not create a disagreeable, sticky mess even if the container is broken during shipment.

Abstract: A polymer is formed from monomers including a zwitterionic monomer, a cationic monomer and a hydrophobic termonomer. The polymer may be cross-linkable. The polymer may be coated onto a surface from a liquid coating composition followed by contacting the coated surface with heparin. The double coated substrates have improved heparin activity over extended periods as compared to heparinised surfaces which are commercially available. Other anionically charged mucopolysaccharides may be used. The polymers may also scavenge heparin from treated blood to avoid use of potentially toxic heparin inhibitors. Preferably the terpolymer is formed from 2-methacryloyloxyethyl-2-(trimethylamonium)phosphate inner salt, choline methacrylate and n-dodecyl methacrylate.

Abstract: Shaped medical devices, e.g. stents, having improved mechanical properties and structural integrity are disclosed. The devices comprise shaped polymeric hydrogels which are both ionically and non-ionically crosslinked and which exhibit improved structural integrity after selective removal of the crosslinking ions. Process for making such devices are also disclosed wherein an ionically crosslinkable polymer is both ionically and non-ionically crosslinked to form a shaped medical device. When implanted in the body, selective in-vivo stripping of the crosslinking ions produces a softer, more flexible implant having improved structural integrity.

Abstract: The present invention relates to a molding method characterized by kneading a binder comprising an agar having an average molecular weight of 30,000 to 150,000 with a metal powder, a ceramic powder, or a mixed powder thereof, injection-molding the thus obtained molding composition into a green body, removing at least the water from the green body, and then sintering the green body to obtain a molded product.

Abstract: Sizing agents comprised of dispersed synthetic polymers in an aqueous solution are provided, as well as methods for making these sizing agents and methods for using these sizing agents to size paper. Improved sizing is obtained by including recurring units of methyl acrylate, ethyl acrylate and/or propyl acrylate in the synthetic polymers.

Abstract: Shaped medical devices, e.g. stents, having improved mechanical properties and structural integrity are disclosed. The devices comprise shaped polymeric hydrogels which are both ionically and non-ionically crosslinked and which exhibit improved structural integrity after selective removal of the crosslinking ions. Process for making such devices are also disclosed wherein an ionically crosslinkable polymer is both ionically and non-ionically crosslinked to form a shaped medical device. When implanted in the body, selective in-vivo stripping of the crosslinking ions produces a softer, more flexible implant having improved structural integrity.

Abstract: Novel latex or emulsion compositions containing internally plasticizing and crosslinkable long-chain alkenol ester monomers are disclosed and claimed. Preferred embodiments include latex formed from acrylate or methacrylate esters of long-chain alkenols. A process for the synthesis of the latex composition is also disclosed, which involves (a) esterification of a long-chain alkenol with an ethylenically unsaturated carboxylic acid; (b) polymerization of the ethylenically unsaturated ester in an aqueous phase with at least one other copolymerizable monomer; and (b) blending of so formed polymer with at least one drier and a surfactant to form the novel latex or emulsion compositions. These compositions form films at low minimum film forming temperatures (MFT) ranging from -5 to 10.degree. C. and cure to above ambient glass transition (T.sub.g) polymers without the use of traditional organic cosolvents which contribute to environmental pollution via volatile organic compounds (VOCs) emissions.

Abstract: A flexible coating composition of hard ceramic particles, a binder and a polymer, and a method of making the same is disclosed. The coating composition can withstand an animal attack with pressures.gtoreq.22,000 psi.

Abstract: Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of their initial viscosity 24 hours after they are inoculated with polysaccharide hydrolysis enzyme.

Abstract: Disclosed herein is an ink-jet recording process which comprises applying a first liquid at least containing a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group per molecule to a recording medium and then applying an ink at least comprising water, an organic solvent, a dye, an alkali-soluble resin and an alkali to the portions where the first liquid has adhered, thereby forming an image. An ink set and an instrument for use in such a process are also disclosed.

Abstract: The invention is directed to a cross-linked gel-like polyvinyl-based composition of matter having unique elasticity. The composition is capable of being used as a kneading compound, as well as being moldable, stretchable, and bouncing, for use in play activities. The composition is based on a cohesive polyvinyl alcohol/polyvinyl pyrrolidone nonadhesive and substantially nondrying binder composition that is appropriate for child use. The invention is also directed to a method of making the instant polyvinyl-based composition of matter.

Abstract: A non-aqueous slurry comprising(a) one or more water soluble polymers;(b) polyalkylene glycol or thickened polyalkylene glycol; and a(c) a slurry stabilizer comprising an amine phosphate ester salt is provided. The slurry has a number of applications, including oil recovery, and in the paper and textile industries.

Abstract: Novel contrast media for use in ultrasonic imaging are described. Such contrast media may be comprised of an aqueous solution of one or more biocompatible polymers, wherein said biocompatible polymers are coated with and/or in admixture with at least one silicon containing compound. Alternatively, the contrast media may be comprised of an aqueous solution of one or more biocompatible synthetic polymers, or an aqueous solution of cellulose. The contrast media may be employed, if desired, with anti-gas agents and/or suspending agents.

Abstract: This invention involves a novel paint formulation comprising a phosphate or metal sulfide heavy metal reactive compound, a binder, a solubilizing compound and a buffer which acts as a carrier for heavy metal reactive chemicals so that when this novel paint is applied to a heavy metal painted surface and both are subsequently removed, the heavy metal paint waste is rendered non-hazardous under the TCLP test.

Abstract: Elastomer films in which active chemical substances, such as corrosion inhibitors, lubricants or biocides for medical use are uniformly dispersed in the form of gel inclusions, processes for preparation and applications of these films.The elastomer film contains at least one active chemical substance in the form of a phase which is dispersed in the elastomer, wherein the disperse phase is in the form of a gel, reversible or irreversible, as a function of temperature, and filled with an active chemical substance.

Abstract: Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of their initial viscosity 24 hours after they are inoculated with polysaccharide hydrolysis enzyme. A process for making the biostable water-borne paints has the steps: a) treating precursor polysaccharide derivative with polysaccharide hydrolysis enzyme in aqueous medium for a time sufficient to obtain reduced molecular weight polysaccharide derivative; and b) mixing the reduced molecular weight polysaccharide derivative with an effective amount of at least one other water-borne paint ingredient to obtain a water-borne paint.

Abstract: Balanced pH, thermo-irreversible gels comprising a polyoxyalkylene compound and an ionic polysaccharide are ideal materials for the formation of a protective contact lens over the cornea of the eye of a mammal.

Abstract: A pressure sensitive adhesive(PSA) composition includes a latex system of an aqueous polymer dispersion derived from ethylenically-unsaturated monomers in the presence of a water soluble protective colloid. The PSA compositions are used in the manufacture of a variety of articles that are intended to be easily attachable to another substrate by the application of pressure alone.

Abstract: An external incontinence device which reduces or eliminates maceration, skin irritation, microbial skin infiltration and infection, and urinary tract infection associated with conventional urinary catheters and incontinence devices is provided. Devices of the invention comprise, in a plurality of configurations, a housing having an outlet conduit, and several alternative means for attaching the housing to a para-meatal genital surface, including a barrier disc comprising various adhesive and medically active substances which form an occlusive adhesive seal with the para-meatal surface. Adhesive leaves made of fluid-absorptive or fluid-permeable materials are provided to adhere the device to skin while permitting removal of moisture from the underlying skin surface, thus eliminating maceration. Vapor permeable adhesives on the interior surface of the attachment elements, and a microbial-barrier layer provided on inner surfaces of the several configurations of housings are also provided.

Abstract: The present invention provides an anti-fogging agent for the surface of a thermoplastic resin sheet which exerts the following excellent effects:(1) The effect of inhibiting fogging on the surface of the sheet due to the condensation of vapor can last over an extended period of time;(2) Excellent blocking resistance and coating stability make the anti-fogging surface less peelable in the procedure of heating it over a heating plate in a direct heating process so that it is formed into various shapes; and(3) The incorporation of a polyvalent alcohol having wetting properties in a predetermined amount provides excellent antistatic properties. The present invention provides an anti-fogging thermoplastic resin sheet treated with the foregoing anti-fogging agent.

Abstract: A composition for retaining dentures in the mouth of a denture wearer including 5-8% w/w of an hydrophilic gelling agent, 2-7% w/w of a thickening agent, 5-20% w/w of ail agent that imparts water resistance to the composition, 0.2-5% w/w of humectant(s) and the balance being water, the composition being formable into a viscous hydrophobic film in use. A method of retaining dentures in the mouth of a denture wearer by applying to the denture or the mouth tissue the composition and placing the denture into position in the mouth in a manner such that the composition substantially forms a seal between the mouth tissue and the denture to thereby assist in the retention of the denture.

Abstract: A rapid disintegrating and dispersing composition for thickening liquid waste into a thixotropic gel comprises a polymeric acrylic resin and a colloid-forming mixture of microcrystalline cellulose and sodium carboxymethylcellulose. Additional ingredients preferably used in making a tableted form of the composition include microcrystalline cellulose per se, polyvinylpolypyrrolidone, magnesium stearate and amorphous silica. The tablet is placed in suitable containment means such as a containment bag. The thixotropic properties of the composition enable the gelled waste to be restored to a liquid when small amounts of hand pressure are applied to the waste containment bag, thereby providing a convenient and simple means for disposal.

Abstract: Inclusion compounds consisting of a host compound, which is a cyclically linked polysaccharide having 3 to 100 monomeric saccharide units and forming a cavity in its molecular framework, and of one or more chemical compounds which are included in this cavity as guest compound(s), are used as charge control agents and charging improvers in electrophotographic toners and developers, in triboelectrically or electrokinetically sprayable powders and powder coatings and in electret materials.

Abstract: Lignocellulosic light weight molding products which are useful as heat insulator, shock absorber, sound absorber and so on and have open-celled foam-structure are mainly composed of lignocellulose that is able to use in not only fibrous shape but also other various shapes. They are at least composed of four components shown hereunder; (1) lignocellulose, (2) water soluble high polymer containing not less than two OH groups in a molecule and having the film properties of tensile strength 10 to 300 MPa and surface tension 30 to 65 mN/m in 0.4 wt % aqueous solution at 20.degree. C., (3) water soluble high polymer containing not less than two carboxyl groups in a molecule and/or anionic surfactant, and (4) high polymer having the film properties of tensile strength 0.1 to 10 MPa and ultimate elongation 200 to 2000%, 2nd transition point 30.degree. to 40.degree. C. and cohesion energy density 30 to 200 cal/cc.

Abstract: A polymer composition, a process for the production of a polymer composition, in particular of an absorbent, are disclosed which substantially consist of a special component A based on renewable polysaccharide raw materials, a special component B consisting of a water-soluble polymer, a matrix material, an ionic and/or covalent cross-linking agent, or an anti-blocking agent, which is obtainable in that the water-swellable polymer is brought together with the polysaccharide polymer, that these are dried and ground then, the other components are added, and mixing up to homogeneity is effected followed by a heat treatment, and that during the addition of the cross-linking agent, after said heat treatment, the same is optionally fixed by the matrix by means of a final heat treatment.Additionally the use of this polymer composition and (animal) hygiene items and chemico-technical products are disclosed which comprise a previously manufactured polymer composition.

Abstract: A low-dust dental alginate impression material composition is disclosed, comprising an alginate, a gelation reaction agent, a gelation regulator, and a filler as major components, which further comprises sepiolite and/or a tetrafluoroethylene resin having a true specific gravity of from 2.0 to 3.0. The low-dust dental alginate impression material composition of the present invention does not influence various capacities of the alginate impression material itself at all, is reduced in the generation of dust, and is superior in the storage stability.

Abstract: An improved denture adhesive composition is comprised of a highly cross-linked lower alkyl ether/maleic acid or maleic anhydride copolymer in which up to about 85% of the initial free carboxyl groups are reacted with one or more cross-linking agents. The cross-linking agents are mixtures of inorganic divalent cations such as calcium, magnesium and zinc together with organic bifunctional compounds comprised of polyhydroxyl compounds such as propylene glycol, glycerin and the like. The copolymer has a specific viscosity of no less than 1.5. A hydrophilic polymer such as sodium alginate or carboxymethyl cellulose may also be added to the lower alkyl vinyl ether/maleic acid or maleic anhydride copolymer which is then formulated with other excipients in a paste, powder, liquid, gel or cream composition.

Abstract: An aqueous coating composition adapted for coating the bottom layer of a double-faced liner board, the composition containing a carboxylated styrene-butadiene copolymer and wax with an aqueous solution of an alkali metal alginate as an optional ingredient.

Abstract: Novel aerated fibrous slurry comprising fibrous material, foaming agent, stabilizer, water and gas, which when dried to a water content of not more than 10% by weight, forms a dry, resilient fibrous foam composition. The dry, resilient fibrous foam composition is useful as an inexpensive cushioning filler, as a heat insulating material and as an absorbent of liquids.

Abstract: A soil top dressing is comprised of a mixture of sand, clay, a plasticizer material, water, and a coloring pigment, if desired. The components of the soil composition are preferably present in the following proportions by weight: sand 50-70%; clay 10-40%; plasticizer 0.5-5.0%; water 5-20%; coloring pigment 1-5%; all coated with kelp meal granules (5-20%). The method of making the invention involves continuously mixing a portion of the sand and the plasticizer in an agitation mixer. The sand becomes coated with the plasticizer, whereupon a quantity of clay is then added, followed by an additional portion of the plasticizing material. It is particularly important that the sand particles become coated with the plasticizing compound and clay. The coloring pigments are added and mixed thereafter. The foregoing particles are thereupon coated with particles of kelp meal. As soon as complete mixing takes place, material can be immediately transferred from the mixer to suitable packaging.

Abstract: Crosslinked biocompatible compositions comprising an ionically crosslinked component and a covalently crosslinked component for encapsulating biologics are disclosed. In accordance with the present invention, also disclosed are crosslinkable biocompatible mixtures comprising an ionically crosslinkable component and a covalently crosslinkable component. Methods for encapsulating biologics with the crosslinked and cross-linkable biocompatible compositions are provided. Also, retrievable macrocapsules for encapsulating microcapsules or biologics are disclosed.

Abstract: Disclosed are denture adhesive compositions possessing improved aesthetics and comprising a component which provides for easy removal of the adhesive from the denture and a hydrophilic powder.

Abstract: A biodegradable air drying screen printing ink. The ink includes a base made of water and a colloidal gum, preferably sodium alginate. A naturally-occurring binder is added to the base, preferably natural latex. The ink also includes one or more pigments made from natural ingredients, preferably plants or insects.

Abstract: A cross-linked gel-like composition of matter. The composition is capable of being used as a modeling compound, as well as being moldable, extrudable, stretchable, and being inflated into bubbles for use as a play activity. The composition is based on a cohesive polyvinyl alcohol non-adhesive and substantially non-drying composition that is safe if accidentally ingested and can be washed from fabrics and carpets with water.

Abstract: At least 20% of poly(vinyl alcohol) (PVA) is dispersed in an aqueous solution of at least one salt dissolved therein selected from the group of sodium or potassium formate, sodium, potassium, or magnesium sulfate, sodium or potassium citrate, sodium or potassium polyacrylate, or mixtures thereof. This aqueous suspension of PVA is useful in systems in which PVA is dissolved in order to reduce the time of dissolution.

Abstract: Building material products, such as, for example, jointing compounds, adhesives, emulsion paints, synthetic plasters, fillers and the like, comprising a mixture ofa) at least 10% by weight, in particular 10 to 99% by weight, of a water-soluble natural polymer and derivatives thereof,b) 1 to 89% by weight of an alkali metal salt or ammonium salt of a crosslinked polyacrylate which, if desired, is grafted with a starch, andc) 0 to 60% by weight of a water-soluble alkali metal salt or alkaline earth metal salt of arylsulfonic acid/formaldehyde condensation products or of a sulfo-modified melamine/formaldehyde polycondensation product.

Abstract: A dental or medical alginate impression composition is provided. The composition includes an alginate material comprising an alginate in an amount between about 10 and 50 weight percent, a filler material in an amount between about 10 and 90 weight percent, and a binder material in an amount between about 1 and 80 weight percent. The composition also includes a silane coating that is added to either the filler or to the alginate material as a whole.

Abstract: A gel-forming composition is used in a process for molding a ceramic composition. The gel-forming composition, such as agar, is improved with a gel-enhancing agent, e.g. polyethyleneimine. As a result, the gel-forming composition improves the ceramic molding process and/or the ceramic product formed therefrom.

Abstract: Crosslinked biocompatible compositions comprising an ionically crosslinked component and a covalently crosslinked component for encapsulating biologics are disclosed. In accordance with the present invention, also disclosed are crosslinkable biocompatible mixtures comprising an ionically crosslinkable component and a covalently crosslinkable component. Methods for encapsulating biologics with the crosslinked and crosslinkable biocompatible compositions are provided. Also, retrievable macrocapsules for encapsulating microcapsules or biologics are disclosed.

Abstract: A molding material for constructing h of living models comprises a composition of alginate powder, water, and chopped polystyrene. This composition is useable in a method of making one-piece head molds or one-piece hand molds of living models by applying the composition to the head of a model, wrapping the composition-covered head in plaster bandages until the composition has cured, removing the bandages, cutting the cured mold so that the model can be freed from the mold, placing the cut edges of the mold in register, and replacing the plaster bandages.

Abstract: The present invention relates to a biodegradable and high absorbent resin composition, a nonwoven fabric made of the same and pads comprising this fabric. This resin composition can be prepared by mixing sodium alginate in a predetermined ratio with a synthetic polymer electrolyte. This resin composition can be spun into a fiber and a nonwoven fabric can be made from it. Pads made of this fabric have biodegradability, high absorbency and water retentivity, thereby being applicable for sanitary products.

Abstract: This invention relates to an impression material composition comprising an alginate and a gelling agent and being hardened in the presence of water, an unsaturated carboxylic acid polymer being contained in an amount of 5 to 150 parts by weight per 100 parts by weight of the alginate.

Abstract: This invention presents water-resistant, formaldehyde-free starch-based corugating adhesives. The adhesives are alkaline-curing and contain 0.1-7% (by wt.) of a crosslinking agent which is a condensate of an epihalohydrin and an amine, a polyamine, or ammonia.

Abstract: The present invention relates to a biodegradable and high absorbent resin composition, a nonwoven fabric made of the same and pads comprising this fabric. This resin composition can be prepared by mixing sodium alginate in a predetermined ratio with a synthetic polymer electrolyte. This resin composition can be spun into a fiber and a nonwoven fabric can be made from it. Pads made of this fabric have biodegradability, high absorbency and water retentivity, thereby being applicable for sanitary products.

Abstract: An adherent insert for artificial teeth consists of a nonwoven fabric, which is impregnated with an adhesive.In order to ensure a strong and persistent adhesiveness, the nonwoven fabric is impregnated with an adhesive which consists of a viscous mixture of alginate and/or carboxymethylcellulose, polyvinyl acetate and a solvent consisting of glycerine triacetate or propylene glycol.

Abstract: The invention relates to aqueous organic compositions which find particular utility as binders in the processing stages necessary for the production of ceramic articles. More particularly, the aqueous organic compositions comprise polyethylene copolymers, especially ethylene-acrylic acid copolymers dispersed in water for use as a binding agent for the formation of ceramics, particularly metal oxides such as aluminum oxides. In an exemplary form, the aqueous organic composition combined with the ceramic particulates has a weight ratio of about 10% ceramics and 20% aqueous organic composition, although other mixtures may be formulated without detracting from the beneficial features of the invention.

Abstract: The present invention relates to a first low-temperature insulating material which comprises polyvinyl chloride, a plasticizer, a water-containing or absorbing gel or an aqueous solution of a water-soluble polymer and an emulsifier and a second low-temperature insulating material which comprises polyvinyl chloride gelled by mixing with a plasticizer and a surface-covered, water-containing hydrogel. The insulating materials are inexpensive and show excellent heat-insulating properties and excellent flexibility at low temperatures.

Abstract: Hydrocolloid adhesive compositions are disclosed comprising a rubbery elastomeric base having dispersed therein hydrocolloid particles, at least some of which are polycationic hydrocolloid particles. The compositions have enhanced resistance to breakdown by body fluids and are especially useful as wound dressings.

Abstract: Organopolysiloxane compositions curable into elastomeric state even in the absence of atmospheric moisture, notably in a confined environment, and well adopted for the production of seals, include an acyloxy crosslinking agent and a natural or synthetic hydrogel hardening agent.