Abstract: The present invention describes a crosslinked aliphatic polyoxaesters containing amines and/or amido groups and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The crosslinked aliphatic polyoxaesters of the present invention is formed from an aliphatic polyoxaester having a first divalent repeating unit of formula I:?O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- !Iand a second repeating unit of the formula:?--O--R.sub.12 --!.sub.U, XVIand optionally a third repeating unit with a formula selected from the group consisting of:?--O--R.sub.4 --!.sub.A, II?--O--R.sub.5 --C(O)--!.sub.B, III(?--O--R.sub.5 --C(O)!.sub.P --O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group wherein the aliphatic polyoxaester has been crosslinked.

Abstract: The present invention describes a new crossslinkable and crosslinked aliphatic polyoxaesters and blends thereof that may be used to produce hydrogels, surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The crosslinked aliphatic polyoxaesters of the present invention are formed from an aliphatic polyoxaester a first divalent repeating unit of formula I:?O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--! Iand a second repeating unit selected from the group of formulas consisting of:?--O--R.sub.4 --!.sub.A, II?--O--R.sub.5 --C(O)--!.sub.B, IIIand(?--O--R.sub.5 --C(O)!.sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatible.

Abstract: Described herein is a multiple layer absorbent core having a front ear section, a crotch section and a back ear section, wherein the machine direction length of the crotch section equals the combined machine direction length of the front ear section and the back ear section, the angle and radii forming the transition from the crotch width to the ear width being equal, the core being suitable for use in an absorbent article, and a method for manufacturing such multiple layer absorbent core.

Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.

Abstract: The present invention relates to a method for adhering two or more substrates by(1) applying to a surface of one of said substrates a non-sagging polyurea adhesive composition comprising the reaction product of:(a) a polyphenyl polymethylene polyisocyanate or a urea-modified prepolymer thereof and(b) an isocyanate-reactive component comprising amines consisting essentially of(i) an aminocrotonate-terminated polyether containing at least two secondary amino groups prepared by reaction of a polyfunctional acetoacetylated polyether polyol with a primary monoamine, and(ii) a low molecular weight aromatic and/or aliphatic diamine, and(2) contacting said substrate with a surface of a second substrate, and(3) curing the polyurea adhesive composition.

Abstract: The present invention describes aliphatic polyoxaesters containing amines and/or amido groups and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit of the formula:[--O--R.sub.12 --].sub.u, XVIand optionally a third repeating unit with a formula selected from the group consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.

Abstract: A tubular dunnage element or paperboard or the like has a tucked or heart-shaped radial cross section, and a slanted axial cross section. The element may be compressed by opposed inward forces along any line through the center of the element. The element is suited for use as a loose fill packing material. Serrated edges cause the elements in a bed to catch on one another, resisting the tendency of a packed article to migrate through the bed to a wall of a container under the influence of vibration occurring during shipment.

Abstract: The present invention describes aliphatic polyoxaesters containing amines and/or amido groups and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit of the formula:[--O--R.sub.12 --].sub.U, XVIand optionally a third repeating unit with a formula selected from the group consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.

Abstract: The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof.

Abstract: The present invention describes a new aliphatic polyoxaesters and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1l)(R.sub.2)--C(O)- -] Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatable.

Abstract: A ground environment mat for VSTOL aircraft and the like, comprising drag elements controlling the effect of laterally transmitted ground jets resulting from jet entry to the mat, so as to reduce hot gas and debris ingestion by the aircraft's air intakes, suck-down on the aircraft's surfaces and ground or deck erosion or heating. The drag elements may comprise or perforated metal twisted flat strips tubes or perforated elements hingedly attached to a backing layer.

Abstract: The present invention describes an aliphatic polyoxaamide polymer and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaamide of the present invention have a first divalent repeating unit of formula I:[X--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--Y--R.sub.17 --].sub.T, I[--O--R.sub.5 --C(O)--].sub.B, and II([--O--R.sub.9 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein X and Y are selected from the group consisting of --O-- and --N(R)--, provided both X and Y are not both --O-- and may be blended with a second polymer that is preferably biocompatable.

Abstract: The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)--] Iand a second repeating unit of the formula:[--O--R.sub.12 --].sub.U, XVIand optionally a third repeating unit with a formula selected from the group consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, III([--O--R.sub.5 --C(O)].sub.P,--O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.

Abstract: A method for increasing the energy absorption of a fabric constructed of high tenacity fiber. This method modifies the ballistic stress-deflection curve of the fabric by effectively toughening the fabric by controlling the peak stresses generated in the fabric layer. These stresses are controlled by perforating the fabric into relatively narrow portions or cutting the fabric into relatively narrow strips, preferably along the bias. This unexpected property is counter-intuitive to known expertise in this area in that the weakening of the fabric by cutting or perforating actually improves the ballistic performance.

Abstract: A thermoplastic resin film at least oriented in the transverse direction with minimized bowing phenomenon is provided. The thermal shrinkage stress in the transverse direction of the film satisfies the following formula I, and the thermal shrinkage factor of said film in the transverse direction at a temperature that is 40.degree. C. higher than the glass transition temperature of said resin is 5% or less:(.sigma..sub.2 /.sigma..sub.1).ltoreq.1.0 (I)wherein .sigma..sub.1 is the thermal shrinkage stress (kg/mm.sup.2) of the film in the transverse direction at a temperature that is 70.degree. C. higher than the glass transition temperature of said resin, and .sigma..sub.2 is the thermal shrinkage stress (kg/mm.sup.2) of the said film in the transverse direction at a temperature that is 80.degree. C. lower than the melting temperature of said resin.

Abstract: A plank for loading surfaces of a picnic bench, bleacher, boat dock and the like including an elongated element formed of a synthetic resin, a plurality of elongated reinforcing bars, and structure provided for connecting the reinforcing bars to the synthetic resin element. The synthetic resin element is formed with a substantially flat web defining a load surface and an undersurface, a pair of side walls extending normally from the undersurface along the length of the element, a plurality of internal walls inward of and parallel to the side walls, and structure for restraining twisting of the reinforcing bars about their longitudinal axis during loading of the plank. The reinforcing bars support the synthetic resin element and restrict bending along the length of the element.

Abstract: An expandable baffle apparatus for sealing a cavity of an automobile or the like includes a piece of heat expandable sealing material that is formed in a shape corresponding to the shape of the cross section of the cavity to be sealed. A support element supports the piece of sealing material at the predetermined cross section while the apparatus is subjected to an elevated activation temperature at which the sealing material expands to seal the cavity at the cross section. The support element is formed of a material having a melting point higher than the activation temperature, and includes an open lattice formed of a shape corresponding to the shape of the cross section of the cavity. The sealing material is supported on the lattice so that when the sealing material is activated, the material expands radially to fill the cross section of the cavity and longitudinally through the lattice.

Abstract: Disclosed are terpolymers having improved barrier properties and tensile strength relative to PET comprising copolyesters derived from acid components comprising about 45 to about 85 mol % terephthalic acid; about 10 to about 40 mol % of at least one naphthalenedicarboxylic acid and about 5 to about 15 mol % of at least one aliphatic dicarboxylic acid having 1 to 6 carbon atoms and glycol component comprising ethylene glycol. The copolyesters of the present invention may be formed into a variety of articles such as blood tubes, serum vials, containers, films and sheeting.

Abstract: The invention is a sidewall for a cargo vessel having a seamless, snag-free interior liner. The wall includes an exterior skin that is rivetted to a first side of a supporting sidepost, and a seamless, snag-free interior liner that is mounted to the second side of the sidepost. The method for making the sidewall includes rivetting the exterior skin to the first side of the supports, and then gluing the seamless interior liner material to the second side of the supports with or without tension, and so that the interior liner is not at all pierced by fasteners, or only pierced in areas that are not likely to contact cargo. In a preferred embodiment, the interior liner is mounted to the second side of the supports under tension to maximize the interior liners' ability to absorb and deflect cargo impact and remain snag-free, sag-free and puncture resistant.

Abstract: An easily tearable plastic film and a pouch made therefrom comprises a thin-wall part for easy tearing. The thin-wall part being made by incorporating strings in the plastic film when it is made by melt extrusion. A method for producing the film and pouch is also shown.

Abstract: A microfibrous sorbent article is provided. The microfibrous sorbent article comprises an elongate boom having a substantially oval cross-section. The boom is formed of multiple adjacent microfibers layers, the layers being bonded to each other by entanglement of fibers between adjacent layers. The boom further contains ion exchange resin, selectively absorbent particulate material, catalytic agent or selectively reactive particulate material.

Abstract: A method for increasing the energy absorption of a fabric constructed of high tenacity fiber. This method modifies the ballistic stress-deflection curve of the fabric by effectively toughening the fabric by controlling the peak stresses generated in the fabric layer. These stresses are controlled by perforating the fabric into relatively narrow portions or cutting the fabric into relatively narrow strips, preferably along the bias. This unexpected property is counter-intuitive to known expertise in this area in that the weakening of the fabric by cutting or perforating actually improves the ballistic performance.

Abstract: The present invention relates to a process for edge coating amorphous ribbon transformer cores comprising the steps of applying to at least one face exclusive of the distributed gap portion, a first porous material having a porosity sufficient to permit a liquid having a viscosty greater than about 100,000 cps to impregnate the porous material to produce a composite structure; and applying a bonding material having a viscosity of at least about 100,000 cps to the first porous material such that the bonding material substantially contacts the core. Coated cores having good magnetic properties are also disclosed.

Abstract: A safety net attached to the doors at a pumping station to cover the open well when the doors are open. The safety net has a plurality of strips in a first direction and a substantially perpendicular plurality of strips in a second direction. The strips are connected where there are intersections. The edges of the strips have attachment means for connection to the doors, or alternately for connection to the frame about the top of the well. When the doors are opened, the safety net is in place and when the doors are closed, the safety net is suspended in the open well. The safety net may also be connected to a single door for those wells which have only a single door as a cover.

Abstract: Conducting articles such as fibers, films, tapes and the like are fabricated from intractable conducting polymers such as polyacetylene. The articles are prepared by (a) forming a gel of a carrier polymer in a compatible solvent, (b) polymerizing, within the gel, a selected monomer, and (c) doping the article so provided. The articles are highly electrically conductive as well as mechanically quite strong.

Abstract: A vertically adjustable glass pane for automobiles, especially a door window pane, is of laminated glass consisting of two thermally toughened single glass sheets, each 1.5 to 3 mm thick, and of a thermoplastic intermediate layer. Both the glass sheets have, in their edge region, tensile stresses in the core having a value from 27 to 57 MN/m.sup.2 for a sheet thickness of 1.5 mm and 20 to 47 MN/m.sup.2 for a sheet thickness of 3 mm. In the middle area within the peripheral region the glass sheets have tensile stresses in the core which, in the case of a glass sheet of 1.5 mm thickness, have values of 25 to 42 MN/m.sup.2 and, with a glass thickness of 3 mm, values of 17.5 to 33 MN/m.sup.2. Laminated glass panes of this type have a comparatively high strength in the peripheral region and low strength in the middle area. They possess excellent properties both from a structural design standpoint and also from the standpoint of safety in case of accident.

Abstract: Ready Wrap is a weatherproof, scratch resistant covering for hard to cover items. It is a material that can be bought in random lengths from a large roll and then hemmed with an ordinary cigarette lighter. Ready Wrap shall be available in a variety of widths in order to suit a variety of differing needs. Ready Wrap has Velcro attached along both edges (FIG. 1 ) so that it may be folded over bringing the Velcro hooks and loops in contact with each other forming a sealed envelope (FIGS. 3 & 6). Ready Wrap also may contain Velcro cross-striping (see FIG. 1 , also FIGS. 2-7), this allows for sealed ends of this folded envelope to be achieved (FIGS. 3 & 6, also FIG. 4 ). Ready Wrap may also have a strip of Velcro running along the underside (FIG. 2 ) allowing for it to be rolled over on itself thereby creating a tubular form (FIG. 5 ). The ends of this tubular form may then be sealed by pressing the Velcro cross-striping together. Imagine FIG. 5 compressed along its horizontal axis.

Abstract: A microfibrous sorbent article is provided. The microfibrous sorbent article comprises an elongate boom having a substantially oval cross-section. The boom is formed of multiple adjacent microfibers layers, the layers being bonded to each other by entanglement of fibers between adjacent layers. Also provided is a method for making the microfibrous sorbent article.

Abstract: Disclosed is a process for producing copolyesters having repeat units from a dicarboxylic acid component comprising at least 90 mol % terephthalic acid and a glycol component comprising about 10-95 mol % 1,4-cyclohexanedimethanol and from about 90-5 mol % ethylene glycol comprising reacting the dicarboxylic acid component and the glycol component at temperatures sufficient to effect esterification or transesterification and polycondensing the reaction product in the presence of a catalyst and inhibitor system consisting essentially of Mn, Zn, Ti, Ge and P, all parts by weight based on the weight of the copolyester.

Abstract: A paper splice member includes first and second flexible webs medially intersecting one another, wherein the webs define a longitudinally aligned unitary splicing member to accommodate free ends of the first and second paper sheets to provide for assembly of the paper sheets for continuous paper feed. A plurality of confronting surfaces are arranged on opposed sides of the first and second webs to secure the free ends of the paper sheets therebetween.

Abstract: In an optical recording medium fitted on a substrate a recording layer containing a light absorbent which absorbs light having a central wave length in the near infrared region, performs thermal conversion of light energy and emits heat energy, and a heat-sensitive recording material, a high density image can be recorded with a small amount of laser irradiation by using a specific water soluble infrared absorbing compound as a light absorbent.

Abstract: A magnetic marker serving to locate, trace, and identify an elongated hidden object, such as a buried utility pipe, duct, conduit, or fiber optic cable, is manufactured by applying magnetic material to a substrate that is elongated and by forming from the material a helical or twisted permanent magnet pattern extending along the length of the substrate. The magnetic material, which may be coextensive with the substrate or applied to a portion only of the substrate, may be formed as a strip coextruded with the substrate and magnetized in the direction of the width of the strip. Alternatively, magnetic material may be mixed with the material from which the substrate is extruded or may be coated on the substrate. A strip may also be preformed and applied to an elongated object as the object is buried, or the strip may form a separate warning tape that is buried with the object and that is provided with a desired magnetic signature by twisting the strip lengthwise as it is advanced for burial.

Abstract: Sheet for safety glazings made of: a) polyvinyl butyral internally plasticized by the presence in the polymer of C.sub.7 to C.sub.15 aliphatic aldehyde groups and b) an external plasticizer in amount sufficient to provide a sheet glass transition temperature of about 25.degree. to 30.degree. C.

Abstract: A network of non-porous polyethylene fibers substantially free of voids formed by preparing a network of gel spun fibers, applying pressure to the network at a temperature and pressure and for a time adequate to form a translucent film substantially free of voids.

Abstract: A composite article, such as a telescope mirror blank, comprising a solid glass body and a supporting network structure, the structure being composed of a network of interlocking struts frit sealed to one another and to the face plate. The article is characterized in that sufficient of the glass body is incorporated in particulate form in the struts to maintain an average expansion mismatch (-50.degree. C. to +50.degree. C.) between the network structure and the glass body of no more than 0.15 ppm/.degree.C.

Abstract: A fire protective insulating device adapted to be placed about articles to be protected from fire. The device comprises at least one layer of resilient and compressible insulative material having a plurality of compressive fastener means for mechanically compressing the insulative material to a high density, at least a portion of the fastening material being substantially less resistive to high temperature than the insulative material. A scrim means may be wrapped about the outside of the compressed insulative material for retaining the compressed insulative material. At least a portion of the scrim means is also preferably constructed of a material which is substantially less resistive to high temperature than is the insulative material. Upon contact with high temperature, the structural integrity of the fastening means is decreased allowing the compressed insulative material to mechanically expand.

Abstract: A process for producing a copolyester by copolymerizing the monomers from the ester interchange of at least two lower dialkyl esters of dicarboxylic acid and glycol using a novel catalyst system. The novel catalyst composition includes from about 20 ppm to about 150 ppm manganese; from about 50 ppm to about 350 ppm lithium; preferably from about 10 ppm to about 70 ppm cobalt; and from about 200 ppm to about 400 ppm antimony, all amounts being based upon the expected yield of the copolyester. The novel process to make copolyester includes the step of employing an effective catalytic amount of manganese and lithium in an ester interchange reaction where the lower dialkyl esters and glycol produce a monomer mixture; and using an effective catalytic amount antimony in a copolycondensation reaction of the monomers.

Abstract: The present invention pertains to fabric detergent and fabric care compositions comprising a surfactant and a polymeric whitening agent which contains both a fluorescent portion and a hydrophilic portion. The use of these copolymers allows certain substrates, such as polyester or soiled cottons, to be brightened more readily then previously known.

Abstract: A lamina having an excellent capacity of scattering ultraviolet rays comprising a laminar substance as a matrix and a finely divided metal or metal compound dispersed therein, wherein the difference in refractive index between the laminar substance and the finely divided metal or metal compound is not less than 0.1, and a cosmetic comprising the same as a UV screener.

Abstract: Extruded shaped structures of amorphous polyarylate copolymers, having a tensile elongation at break of at least 80% at 25.degree. C., are made by drawing a molten extrudate of the copolymer at a temperature at least 100.degree. C. above the glass transition temperature of the copolymer.

Abstract: A sheathing for extending members having either a rectangular cross section or a circular cross section is formed of sheathing sections wherein the sheathing sections have two positions. In a first substantially flat position the sheathing sections are convenient to stack and when stacked the surfaces of adjacent stacked sheathing sections are substantially in contact with each other. In a second folded position the sheathing sections define an enclosed hollow space for disposing an extending member therein and surrounding the extending member to protect vehicles or other objects striking the extending member. Articulating hinges are provided for transposing the sheathing sections from one of these positions to the other. The sheathing sections are provided with dove tailing interengagement for joining sections of the sheathing to each other. Inserts brace the walls of the sheathing against extending members inside the space defined by joined sections.

Abstract: Disclosed are an inflation film of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [.eta.] of at least 5 dl/g, a tensile strength at break of at least 800 kg/cm.sup.2 in a machine direction and at least 700 kg/cm.sup.2 in a transverse direction, an impact strength of at least 5000 kg.multidot.cm/cm, a permeability to water vapor of 0.45 g.multidot.mm/m.sup.2 .multidot.24 hr or less, a shrinkage factor in a transverse direction at 130.degree. C. of 10% or more, and a thickness of 10 to 1000 .mu.m, and a method and apparatus for producing the same.

Abstract: An adornment for affixing to fabric comprised of several ornaments in a series. The ornaments are attached by threads. The adornment is affixed by either a heat sealable thread which binds the adornment to the fabric upon application of sufficient heat and pressure, or by a heat sealable coating or 2 heat sealable material laminated on the individual ornaments.

Abstract: The present invention relates to a tension wound roll of tape. The tape does not contain a separate adhesive layer but will bond to itself after being elongated by at least 50 percent and wrapped in overlapping layers. The tape of the invention will not self fuse when in roll form. The present tape is prepared from a minor proportion of a thermoplastic polymer and a major proportion of elastomeric polymer, and further contains a minor amount of an anti-blocking agent. The tape may be used in a wide variety of applications, for example, to repair leaks in hoses or pipes.

Abstract: This invention provides a marker sleeve assembly comprising a series of flattened tubular recoverable marker sleeves held by at least one longitudinal carrier strip which holds the sleeves in fixed spaced apart relationship extending laterally from the strip. In a preferred embodiment, this invention provides a marker sleeve assembly which comprises a pair of parallel longitudinal carrier strips the inner edges of which have two layers with adhesive means on the inside facing surfaces of the two layers. The ends of the flattened tubular recoverable marker sleeves are positioned between the layers and held in position by the adhesive means on the inside surfaces of said layers of the carrier strips. The flattened marker sleeves are spaced apart whereby a portion of each adhesive means on the inside surface on each said layer of each carrier strip alternately engages the ends of the flattened marker sleeves and the opposing adhesive means on the opposing surface of the opposing layer of that carrier strip.

Abstract: A microbubbled, substantially fluid-impervious polymeric web exhibiting substantially the same consumer preferred soft and cloth-like tactile impression and low noise generation levels heretofore only achievable in microapertured, and hence substantially fluid pervious, polymeric webs. In a particularly preferred embodiment, the present invention pertains to a microbubbled polymeric web exhibiting a fine-scale pattern of discrete mushroom-shaped surface aberrations, each of said surface aberrations having its amplitude oriented substantially perpendicular to the surface in which the surface aberration originates. However, unlike microapertured webs which are fluid pervious, at least one tiny, continuous membrane bubble, i.e., a microbubble, is provided substantially coincidental with the maximum amplitude of each surface aberration. Thus, the microbubbled web is substantially fluid-impervious.

Abstract: An inflatable article has first and second impermeable members which are made of a flexible material. The first and second impermeable members are joined together at their edge portions to define an air chamber therebetween. A plurality of first retaining elements are attached to the inner surface of the first impermeable member. A plurality of second retaining elements are attached to the inner surface of the second impermeable member. An endless flexible cord is retained alternately on the first and second retaining elements.

Abstract: A method for supporting metalloporphyrins on polybenzimidazole articles is disclosed herein. Microporous polybenzimidazole articles are treated with a strong base to produce an anionized polybenzimidazole article. A metalloporphyrin salt is dissolved in a solvent and is mixed with the anionized polybenzimidazole article to produce a microporous polybenzimidazole metalloporphyrin complex. This compound can be used in the selective oxidation of alkanes, olefins and aromatic compounds and is quite useful in the separation of oxygen from a gas stream. An alternative method of forming this complex by mixing directly the polybenzimidazole particulate with a weak metalloporphyrin salt without the use of a strong base results in lower percentages of substitution then does the principal method.

Abstract: A shaped article of a polyurethane-urea spandex formed from polyalkaneether glycol that was capped with tertiary aralkyl diisocyanate and then chain extended with a specific tricomponent diamine mixture has unexpectedly good heat settability. The diamine mixture comprises 25 to 80% of hydrogenated m-phenylenediamine, 10 to 50% of hydrogenated p-phenylendiamine and 10 to 30% of tetrachloro-p-xylylenediamine.

Abstract: A sandwich construction is disclosed that provides alternating offset and jacent corrugated strips secured between upper and lower face sheets. The peaks of one strip are adjacent the troughs of an adjacent strip. The peaks and troughs can have flattened portions and the face sheets can be secured to said portions.