Abstract: Concentrates (also known as masterbatches) of certain bicyclic dicarboxylate salt thermoplastic nucleating additives in order to facilitate use thereof in typical thermoplastic manufacturing procedures are provided. Such nucleating additives have been found to impart high peak crystallization temperatures to thermoplastics (such as polypropylene, as one example); however, when combined in masterbatch form in the past such a nucleation property was sacrificed to a certain extent due to unforeseen problems associated with polymer-containing concentrates (i.e., pellets, for example) of such additives. Thus, improvements in masterbatching of these bicyclic dicarboxylate salt thermoplastic nucleators have been accomplished to the level necessary to allow for concentrate use with concomitant effective nucleation effects at the same level (if not in excess thereof) of the utilization of such a nucleator mixed prior to melt-compounding with a target or resin or added directly into a molten resin (i.e.

Abstract: The invention relates to a method for enhancing the fraction of ?-crystal modification in polypropylene by compounding nanocrystalline substances. A ?-fraction of 50–100% is achieved with said method. The compounds are characterized by improved mechanical properties. The nanocrystalline powders can be directly compounded and compatibilized with surface-active substances in the PP matrix for better dispersion.

Abstract: The method for sealing a seam between adjacent structural panels significantly reduces the time for finishing a drywall in comparison with conventional methods, which use multiple applications of a joint compound to seal the seam. An drywall joint compound is mixed with a synthetic fiber, such as Colombian Fiber, or polypropylene, and sufficient water to facilitate soaking of the synthetic fiber and mixing with the joint compound. An optional liquid adhesive, such as liquid liquid adhesive for vinyl wallpaper, or water-based liquid adhesive, is added to the mixture. The mixture is then applied as one coat to the seam and allowed to dry. No subsequent coatings of the mixture are necessary.

Abstract: A two-part sizing system for making colorless, densified fiber pellets of a reinforcing fiber material. The densified product may be advantageously produced by first applying a precursor size composition to reinforcing fiber strands, chopping the reinforcing fiber strands into chopped strand segments, applying a binder size, and densifying the chopped strand segments to form densified fiber pellets. The binder size is formulated using a copolymer of maleic anhydride which generates a product free from discoloration. In the process of making the pellets, the sized chopped strands are densified by tumbling in a rotating chamber for a period of time sufficient to increase their density but insufficient to degrade the fibers to a point where composite articles formed from such pellets have lower tensile or impact strengths than comparable composite articles formed from unpelletized strand segments.

Abstract: A propylene-based resin composition has good external appearance due to good weld appearance and low gloss and has excellent mechanical properties such as impact resistance and stiffness. The composition is well-balanced in the external appearance and mechanical properties. Automotive interior trims made of the composition are also described. The propylene-based resin composition comprises (A) 60 to 90% by weight of a propylene-based resin (1) comprising 78 to 88% by weight of 23° C. p-xylene insolubles (a) and 12 to 22% by weight of 23° C. p-xylene solubles (b), (2) the insolubles (a) having an isotactic pentad fraction of 95% or higher, a relaxation time (?) of 0.01 to 0.

Abstract: Ethylene polymer composites and concentrates utilized for their preparation are provided. The composites of the invention have increased melt strength compared to the base resin and other improved physical characteristics. The composites contain an organically modified clay and may also contain a compatibilizng agent, depending on the base resin used.

Abstract: An abradable dry powder coating (22) composition for coating onto a surface (12) for subsequent curing to form into an abradable coating, including a powder (16) formed of uncured thermoset resin with at least 15 volume percent filler, wherein the filler does not substantially melt below the cure temperature of the resin. Method for making the coating composition includes melt-mixing the thermoset resin with at least 15 volume percent of filler, cooling the resulting mass composite, and then breaking the cooled mass composite into powder particles (16). Method of coating an article with an abradable coating includes applying the dry composite powder with the filler therein onto a substrate and curing the dry powder composition, preferably by electrostatic coating. An article is also disclosed which is coated with the abradable coating.

Abstract: A non-yellowing coating composition particularly useful as primer that has a low VOC and excellent adhesion and chip resistance and comprises an aqueous coating composition having a VOC of less than 0.12 kg/L (1.

Abstract: A process for producing olefin polymer composites having improved melt strength and other improved physical characteristics is provided. The process is a solution process wherein an organically modified clay is intimately incorporated, at low levels and without the use of compatibilizing agents, into an olefin polymer base resin.

Abstract: The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additive.

Abstract: A tire component formed by a process comprising the steps of (A) vulcanizing a rubber composition comprising, (1) a rubber, (2) a modified polyolefin additive, (3) an aluminum hydroxide filler, and (4) a rubber vulcanizing agent.

Abstract: Compositions having improved gas/vapor barrier qualities are described. The compositions are composed of a substantially non-polar resin and a lamellar filler, the lamellar filler delaminating under high shear, to increase its aspect ratio. Also described are compositions composed of a non-polar thermoplastic resin filled with platelets of talc having an aspect ratio of at least 5; the platelets have an average aspect ratio of between 16-30 and a CIE whiteness index of at least 40.

Abstract: This invention relates to thermoplastic polymer compositions comprising a clay having drip resistance in the Underwriters Laboratories Standard 94 flammability test.

Abstract: Polyolefin compositions in powder form suited for metal coating, including (percentage by weight): 1) from 1% to 40% of hollow microspheres; 2) from 60% to 99% of a composition comprising: a) from 25% to 95% of polypropylene, polyethylene or crystalline propylene copolymers or mixtures thereof; b) from 0% to 70% of an elastomeric copolymer; c) from 0.5% to 10% of propylene or polyethylene modified with polar groups; d) from 0% to 10% of titanium dioxide.

Abstract: Hot-melt, pressure-sensitive adhesive compositions of amorphous polyalphaolefin and crystalline polypropylene have improved bond strength over the amorphous polyalphaolefin alone. The adhesive compositions improve dynamic shear strength, dynamic peel strength, as well as static peel strength. The adhesive compositions are particularly suitable for use in absorbent articles.

Abstract: The combination of fluoropolymer processing aid with foam cell nucleating agent gives a combined processing aid that is far superior to either individually when used in the extrusion of melt processible polymers.

Abstract: A polypropylene resin composition comprising 100 parts by weight of a polypropylene resin, 0.001 part by weight or more and less than 0.03 parts by weight of an alkaline earth metal hydroxide and 0.01 part by weight or more and less than 0.5 parts by weight of a phenol antioxidant, a molded product and a film prepared therefrom. The composition is excellent in thermal stability, makes less dirty a processing machine on processing and is less fuming.

Abstract: A polyolefin composition having enhanced dyeing capabilities containing: (a) a polyolefin; (b) from 0.01 to 10% by weight, based on the weight of the polyolefin in, of a migratable amphiphile, excluding phenolic and sulfur-containing stabilizers and n-octyl phenyl salicylate; and (c) from 0.01 to 1000 ppm of a transition metal, based on the weight of the polyolefin.

Abstract: The present invention relates to inorganic particles, with the exception of silica, comprising at least one functionalized polyorganosiloxane grafted over all or part of their surface, the said polyorganosiloxane being functionalized by: at least one alkoxy group, and at least one organic group chosen from alkyls, alkenyls, mercaptoalkyls, sulphoxides, epoxys, (meth)acryloyloxy groups, amino groups, hydroxyl groups, siloxy groups, ethers, ketones, esters, phosphorus-containing groups or polymer portions comprising vinylaromatic, ether, amide or sulphur repeat units. The invention also relates to the process for the preparation of these particles. It also relates to compositions comprising the said particles and at least one thermoplastic polymer, particularly polyolefins.

Abstract: Zinc-containing hydrotalcite particles which satisfy the following requirements (1) to (4): (1) the chemical composition should be represented by the following formula (A): ZnxAl2(OH)4+2xCO3.mH2O  (A) wherein x and m satisfy 3.5≦x≦4.5 and 0≦m≦4, respectively, (2) the average secondary particle size should be 2 &mgr;m or less, preferably 0.3 to 1.5 &mgr;m, (3) the amount of particles having a particle size of 10 &mgr;m or more out of all the particles should be 1 wt % or less, preferably 0.5 wt % or less, and (4) the specific surface area measured by a BET method should be 20 m2/g or less, preferably 4 to 15 m2/g; and a resin composition comprising 0.001 to 5 parts by weight of the zinc-containing hydrotalcite particles based on 100 parts by weight of the polyolefin resin. This resin composition has excellent heat deterioration resistance, rust formation preventing properties, coloration preventing properties, dispersibility and filter permeability.

Abstract: A printing resin film excellent in ink dryability and transferability, and comprising a resin composition comprising (A) from 25 to 65% by weight of a calcium carbonate powder having an oil absorption of from 70 to 200 ml/100 g as determined by JIS-K5101-1991 and (B) from 35 to 75% by weight of a thermoplastic resin.

Abstract: A highly crystalline polypropylene having a degree of crystallinity of at least 50.5% calculated from the heat of melting; and a relationship between a proportion f(R)of R-lamella with respect to spherulites and a weight-average molecular weight Mw which satisfies the following Formula (II). The above-mentioned proportion f(R) of R-lamella spherulites is calculated using the following Formula (I) from the birefringence .DELTA.n of crystallized spherulites obtained by melting said highly crystalline polypropylene at 230.degree. C. for 5 minutes, cooling to a temperature of 132.degree. C. at a cooling rate of 20.degree. C./minute, and then maintaining said temperature for 90 minutes.

Abstract: A propylene resin composition composed of a nucleating agent and a propylene resin having a melt index (MI) of not greater than 1.2 g/10 min and satisfying a relationship between elongational viscosity (.eta..sub..EPSILON.) and melt index (MI) represented by2.0.times.10.sup.5 .times.MI.sup.-0.68 .gtoreq..eta..sub..EPSILON. .gtoreq.1.5.times.10.sup.5 MI .times.MI.sup.-0.68.The composition is endowed with high-rigidity, has excellent drawdown resistance, ensures practical discharge rate during blow-molding at low resin temperature of 220.degree. C. or less, and enables high-productivity production of large-sized blow-molded parts featuring light weight, excellent rigidity, dimensional stability, and heat resistance. Blow-molding of the propylene resin composition provides a blow-molded article which is advantageously used as, particularly, a large-sized automobile part, such as a bumper, a bumper beam, a seat back, an instrument panel, or a like part.

Abstract: A polymer film comprising at least first and second contiguous and coextruded portions, wherein the first portion is extruded from a first polymer composition containing a filler material in an amount sufficient to increase the water vapor permeability of the first portion relative to the second portion, and the second portion is extruded from a second polymer composition such that a tensile strength of the second portion is greater than the tensile strength of the first portion. Such polymer films allow for highly vapor permeability, while providing portions with sufficient strength to allow for taping or attachment of fastening devices.

Abstract: The invention provides a composition and method for obtaining both light and dark laser marks of varying shades and intensities on a single plastic article by selectively controlling laser parameters. The invention further provides compositions and methods for obtaining pre-selected one-color and multi-colored designs on plastic articles, by selectively controlling material formulations and laser parameter settings.

Abstract: The invention provides a composition and method for obtaining both light and dark laser marks of varying shades and intensities on a single plastic article by selectively controlling laser parameters. The invention further provides compositions and methods for obtaining pre-selected one-color and multi-colored designs on plastic articles, by selectively controlling material formulations and laser parameter settings.

Abstract: There are provided a propylene-based polymer characterized in that (1) the xylene-extraction insoluble portion (XI) is 99.0 wt % or greater, (2) the isotactic pentad ratio (IP) is 98.0% or greater as measured by .sup.13 C nuclear magnetic resonance spectroscopy, (3) the isotactic average chain length (N) is 500 or greater, and (4) the total amount of each of the fractions obtained by column separation of the xylene insolubles whose average chain length (N.sub.f) is 800 or greater accounts for 10 wt % or more of the entirety, and a method for its production, as well as a propylene-based polymer composition prepared by combining with this propylene-based polymer at least a nucleating agent in the range of 0.05-15 wt %. In addition, there are provided a polymerization catalyst component allowing the production of such a propylene-based polymer, and a method for its production.

Abstract: Polypropylene films which have cavities distributed in the film and on the surfaces are suitable for writing or printing and have a low density. The films have surface qualities of each side of surface within .+-.2.times.10.sup.-6 inch of the average depth of the cavities, .+-.2% of the average of the gloss at 45.degree. angle and .+-.0.02 of the average of coefficient of friction. Such a film is obtained by passing the molded film from the calender through a set of heating rolls at temperatures revealed in this invention before entering the stretching system. The obtained polypropylene film has superior printability, low density and high stiffness, and thus is suitable for use as a paper substitute.

Abstract: A process which combines a calender with a stretching system and a set of heating rolls is provided in this invention to produce films of polypropylene resin of wide thickness range. The polypropylene films which have cavities distributed in the film and on the surfaces are suitable for writing or printing and have a low density. The films have surface qualities of each side of surface within .+-.2.times.10.sup.-6 inch of the average depth of the cavities, .+-.2% of the average of the gloss at 45.degree. angle and .+-.0.02 of the average of coefficient of friction. Such a film is obtained by passing the molded film from the calender through a set of heating rolls at temperatures revealed in this invention before entering the stretching system. The obtained polypropylene film has superior printability, low density and high stiffness, and thus is suitable for use as a paper substitute.

Abstract: Organosiloxane compositions exhibiting excellent vibration damping properties comprise(A) from 70 to 99.9 weight percent of a liquid polyorganosiloxane,(B) from 0.1 to 10 weight percent of hollow particles of a thermoplastic organic resin, and(C) from 0 to 20 weight percent of a thickener.

Abstract: A composite is provided having improved toughness without reduction in stiffness comprising a polymer matrix having fibers embedded therein wherein the polymer of the matrix is substantially beta polypropylene or a beta polypropylene-olefin copolymer. The composite is made by combining a nucleating agent with a polymer composition selected from the group consisting of alpha polypropylene, an alpha polypropylene-olefin copolymer, alpha polypropylene containing fibers therein and an alpha polypropylene-olefin copolymer having fibers therein, and when the polymer is polypropylene or polypropylene-olefin copolymer, also independently adding fiber to the polymer or copolymer and thereafter inducing nucleation whereby a composite of improved stiffness with no reduction in toughness is formed.

Abstract: The present invention relates to a glass fiber binding composition comprising an effective binding amount of an aqueous soluble furan resin, 15 to 99 percent by weight water, and an effective amount of a catalyst for curing the furan resin. The invention further pertains to a process of binding glass fibers at junctions of the fibers comprising the steps of providing newly formed glass fibers, applying an effect binding amount of an aqueous soluble furan resin to the junctions of the glass fibers, and curing the resin at the junctions of the glass fibers. Finally, the invention also discloses a glass fiber composition comprising a plurality of glass fibers having a plurality of junctions where two or more fibers meet, and an effective binding amount of an aqueous soluble furan resin comprising 15 to 99% water applied to the junctions of the glass fibers.

Abstract: An at least monoaxially stretched polypropylene film made of a composition comprising a crystalline polypropylene and a monocyclic olefin polymer (e.g. a polycyclobutene or a polycyclopentene), wherein the content of the monocyclic olefin polymer is 0.1-1,000 ppm by weight.The polypropylene film is superior not only in transparency but also in image clarity by which an image is clearly seen through the film.The polypropylene film, when further comprising talc having an average particle diameter of 0.1-10 .mu.m in an amount of 50-4,000 ppm by weight, can prevent the surface roughening or edge roughening of sheet during the sheet formation conducted before stretched film production.The polypropylene film, when further comprising an anti-blocking agent and a polyethylene together, can prevent the generation of voids caused by the anti-blocking agent.

Abstract: Stable aqueous coemulsions of oxidized polyethylene with amino functional silicone fluids which includes at least one constituent selected from the group consisting of; ethoxylated aliphatic amines, ethoxylated nonylphenols, ethoxylated primary alcohols, ethoxylated secondary alcohols or other nonionic emulsifiers are taught, as well as processes for making the same. The coemulsions may also comprise further constituents, including but not limited to fatty acids, ammonium hydroxide, salts and water. The coemulsions find use in conjunction with textile processing and paper processing.

Abstract: Reinforced, flame-resistant thermoplastic composition consisting of: (A) a polymeric matrix consisting of an olefinic or styrene (co)polymer; (B) a quantity which is sufficient to give flame resistance properties, of an intumescent flame-retarding agent consisting of a mixture of (i) a compound containing nitrogen, insoluble in water, consisting of an oligomer or polymer of a derivative of 1,3,5-triazine and (ii) an ammonium phosphate, and (C) from 5 to 50% by weight with respect to the total composition of a phosphorite having a phosphorous content, expressed as BPL (Bone Phosphate of Lime) of more than 40% by weight.

Abstract: At least monoaxially stretched polypropylene film containing an antiblocking agent, wherein the antiblocking agent has a cuboid and/or cubic, preferably cubic, geometry with bevelled, i.e. chamfered, edges and is X-ray amorphous.

Abstract: A glass fiber strand for reinforcing a thermoplastic resin, consisting essentially of a strand of glass filaments having a sizing agent applied thereto and bundled, and an auxiliary resin capable of forming a polymer alloy with a main thermoplastic resin to be reinforced, coated on the surface of the strand.

Abstract: The present invention provides pavement and a paving material in which a large quantity of aggregates are bound with one another by a hot melt of thermoplastic resin powder, and also provides producing methods of such pavement and such paving material. The thermoplastic resin powder is neither limited in pot life, nor influenced by working conditions and weather conditions at the time when pavement is laid at a job site. Accordingly, uniform strength can be given to the resulting pavement or paving material. Further, the resulting pavement or paving material is excellent in weather resistance, elasticity and flexibility. Thus, the pavement of the present invention can be suitably used as pavement at play ground, parks, roads and the like. It is also easy to amend pavement, as necessary, after laid. The pavement producing method of the present invention can readily and efficiently produce the pavement.

Abstract: A filler-containing resin composition containingcomponent A, which is an ethylene copolymer having (a) a melt flow rate (MFR) of 0.01 to 20 g/10 min.; (b) a density D of not more than 0.935 g/cm.sup.3 ; (c) a single peak of elution volume corresponding to a temperature within a range from 30 to 100.degree. C. with the elution curve satisfying a relationship in which the ratio H/W is not less than 1 when H represents the height of the peak and W represents the width of the elution curve at 1/2 H; and (d) an elution volume Y wherein (1) Y.ltoreq.-4500D+4105 when the density D of the component A is less than 0.91 g/cm.sup.3, but Y.ltoreq.100; or (2) Y.ltoreq.10 when the density D of the component A is not less than 0.91 g/cm.sup.3 ; andcomponent B, which is a particulate inorganic filler having an average particle size of not more than 10 .mu.m, and a bulk density of 0.1 to 0.7 g/cm.sup.

Abstract: A process for producing a molded product of propylene resin which includes melting and kneading at least a part of the following component (a), adding to the resulting melt the following component (b) or the component (b) and the remainder of the component (a) and kneading the resulting mixture to prepare a resin composition having a melt flow rate of 1 to 100 g/10 min, and then molding the resin composition into a molded product in which the breakage rate of the component (b) is 30% by weight or less: (a) 100 parts by weight of a crystalline propylene polymer having a melt flow rate of 1 to 300 g/10 min and (b) 3 to 80 parts by weight of a filler in the form of hollow particles having a mean particle density (true density) of 0.1 to 0.9 g/cm.sup.3, as measured according to ASTM-D2840, a mean particle diameter of 7 to 100 .mu.m and a 10%-by-weight breakage pressure resistance of 100 kg/cm.sup.2 or more, as measured according to ASTM-D3102.

Abstract: A method of manufacturing a molding material includes the steps of winding a thin metal strip on the peripheral surface of a rotary shaft a plurality of turns with a resin material being interposed between the resulting layers of metal, cutting an end surface of the metal strip and the resin material which have been wound by a cutting blade while rotating said rotary shaft to obtain a mixture of metal fibers and resin fibers, and heating the fiber mixture to a temperature at which the resin fibers can be softened. In this way, a molding material in which the metal fibers are substantially uniformly dispersed in the resin material in a closely contacted state can be obtained easily. Furthermore, the contents of the metal fibers by volume in the molding material can be arbitrarily adjusted by changing the rate at which the metal strip and the resin material are wound around the rotary shaft.

Abstract: A polyarylene sulfide resin composition which yields a molded article having excellent surface appearance and excellent toughness and impact resistance comprises a blend of a polyarylene sulfide resin and a polyolefin resin with a compound having a carbon-carbon double bond and an epoxy group in its molecule. Optionally a radical initiator and a filler can be added to the composition.

Abstract: A thermoplastic resin composition for extrusion molding superior in the balance of mechanical properties and moldability is obtained by using a partially crosslinked product obtained by dynamically heat-treating:(A) 100-1 wt % of an .alpha.-olefin (co)polymer of C.sub.2 to C.sub.8 ;(B) 0-99 wt % of a rubbery substance;0.01-7 parts by weight, based on 100 parts by weight of the components (A)+(B), of at least one crosslinking agent selected from:(C) a dihydroaromatic series compound or a polymer thereof,(D) an ether series compound,(E) a tetrahydroaromatic series compound, and(F) a cyclopentane series compound; and(G) 0.01-7 parts by weight of a polyfunctional monomer based on 100 parts by weight of the components (A)+(B).

Abstract: A composition for injection molding well-balanced in rigidity, impact resistance, appearance of molded products and moldability is obtained by using as an essential component a partially crosslinked product being prepared by dynamically heat-treating:(A) 40-100% by weight of an .alpha.-olefin (co)polymer resin having 2 to 8 carbon atoms;(B) 0-60% by weight of rubbery substance; 0.01-0.07 parts by weight, based on 100 parts by weight of said components (A)+(B), of at least one crosslinking agent selected from:(C) a dihydroaromatic compound or a polymer thereof,(D) an ether family compound,(E) a tetrahydroaromatic compound, and(F) a cyclopentane family compound; and(G) 0.01-7 parts by weight of a polyfuncational monomer based on 100 parts by weight of said components (A)+(B).

Abstract: A thermoplastic resin composition well-balanced in rigidity, resistance to impact and to heat, dimensional stability, flame retardance and moldability, prepared by incorporating an inorganic filler and/or a flame retardant into a thermoplastic resin composition containing a partially crosslinked product obtained by dynamically heat-treating a thermoplastic resin and/or a rubbery substance in the presence of at least one crosslinking agent selected from a dihydroaromatic series compound or a polymer thereof, an ether series compound, a tetrahydroaromatic series compound, and a cyclopentane series compound, and also in the presence of a polyfunctional monomer.

Abstract: Disclosed in this invention is a thermoplastic resin composition comprising a thermoplastic resin, a conductive inorganic filler and/or a non-conductive inorganic filler, and an adduct of an ethylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a saturated carboxylic acid. The adduct of an alkylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a carboxylic acid is an additive having excellent compatibility with the thermoplastic resin and useful for improving dispersibility of the inorganic filler.

Abstract: A flame-retardant resin composition comprising (i) a mixture comprising (A) 50 to 90% by weight of a polyolefin resin, (B) 10 to 50% by weight of a polyamide resin, (C) 1 to 5% by weight of a polyolefin resin modified by an unsaturated carboxylic acid or a derivative thereof, (D) 25 to 55% by weight of a hydrated metal oxide and (E) 0 to 10% by weight of antimony trioxide; the total of the polyolefin resin (A) and the polyamide resin (B) being from 30 to 74% by weight of the mixture (i); and (ii) glass fibers (F) in an amount of 18 to 70 parts by weight to 100 parts by weight of the mixture (i). The resin composition is not toxic and has an excellent flame-retardant property and a high mechanical strength.

Abstract: A propylene polymer film is described which is composed of a composition comprising 100 parts by weight of a propylene polymer, 0.01 to 0.5 part by weight of a fine spherical silica particle and 0.3 to 5.0 parts by weight of hydroxy-fatty acid glyceride. A laminate film including a layer comprised of the above composition is also described. The film has an excellent transparency, gloss, slipperiness and adhesiveness, as well as a good adaptability to vacuum deposition.

Abstract: A biaxially-oriented film with high mechanical strength, which includes 69 to 94.99% by weight of a polyolefin, 5 to 30% by weight of a natural or synthetic resin having a softening point in the range from 70.degree. to 170.degree. C., and 0.01 to 1% by weight of a nucleating agent, based on the total weight of the film. A method for producing this film includes biaxially drawing the film at temperatures below the melting point of the polyolefin.

Abstract: Disclosed is a novel microscope slide. The slide of this invention is a plastic microscope slide which is optically opaque and substantially non-fluorescent. The slide of this invention has particular utility in epi-fluorescent microscopy.