Abstract: A portable material having first and second surfaces, which printable material includes a first layer defining the first surface and a second layer defining the second surface. The second layer includes particles of a thermoplastic polymer having largest dimensions of less than about 50 micrometers and from about 10 to about 50 weight percent of a film-forming binder, based on the weight of the thermoplastic polymer. When the second layer has a melting point of from about 65 to about 180 degrees Celsius, the printable material is suitable for use as a heat transfer material. Desirably, the second layer also contains from about 2 to about 20 weight percent of a cationic polymer, based on the weight of the thermoplastic polymer. Other components which can be contained in the second layer include from about 1 to about 20 weight percent of a humectant; from about 0.2 to about 10 weight percent of an ink viscosity modifier; from about 0.1 to about 5 weight percent of a weak acid; and from about 0.

Abstract: A thin panel consisting essentially of a compressed non woody lignocellulosic material and a binder. The thin panel has a thickness of less than about 0.10 inch (2.54 mm), preferably between about 0.06 inch (1.6 mm) and about 0.10 inch (2.54 mm). The preferred binder is a polyisocyanate. The non-woody lignocellulosic material may be straw, bagasse, hemp, flax shives or jute sticks. The preferred non-woody lignocellulosic materials are selected from the group consisting of straw and bagasse. The bagasse may be substantially non-depithed. The thin panel is useful as core stock in plywood.

Abstract: The invention relates to a multilayer polypropylene film which comprises a base layer K, an interlayer Z and an outer layer D in the structure KZD. The base layer includes propylene polymer or a propylene polymer mixture and filler. The interlayer includes a propylene polymer or a propylene polymer mixture and pigment. The outer layer is heat-sealable and contains a combination of inorganic and/or organic particles and a tertiary aliphatic amine of the formula I: ##STR1## in which R.sup.1 is essentially an alkyl radical having at least 18 carbon atoms or an essentially fully saturated alkyl radical having 8 to 26 carbon atoms, andR.sup.2 and R.sup.3 are identical or different and are R.sup.4 -CH.sub.2 OH, in which R.sup.4 is an essentially saturated C.sub.1 -C.sub.6 -alkyl radical.

Abstract: Low-density press board material is prepared by particulate kenaf core raw material and a cold-set, thermosetting or thermoplastic binder. The compressed and cured material exhibits dimensional stability, acoustical and thermal insulative properties and related characteristics roughly equivalent to some currently available wood and wood-substitute materials. The surfaces of the kenaf core board can be upgraded with the addition of overlays.

Abstract: A composite structure which comprises, in intimate jointed lamination, a substrate layer, and intermediate adhesion layer, and a tightly adhered polymeric film, the adhesion layer comprising an aqueous emulsion polymer containing a vinylamine homopolymer or copolymer, preferably polyvinyl alcohol/polyvinylamine copolymer.

Abstract: A web or sheet product is provided which is coated on at least a portion of its surface with a bond-enabling material for adhering toner particles, on the surface of the sheet. The sheet product can be used as a mailer or confidential form which is sealed using toner particles as the adhesive. The bond-enabling material may be a polymer which is coated on the sheet as a liquid and then cured to form a film on the surface of the sheet. The bond-enabling material is resistant to melting or degrading when exposed to temperatures used for fusing toner particles, and additionally may act as a tie coat to enhance the adhesion of toner particles to the surface of the sheet. The bond-enabling material may be coated on the peripheral edges of the sheet, and toner particles are printed over the bond-enabling material on the peripheral edges of the sheet. The sheet is folded and sealed by the application of heat and pressure to the edges of the sheet.

Abstract: A label for use as a price tag on products has a printable recording medium which can be attached by adhesive to a carrier foil. The adhesive attachment can be provided by means of a laminated material having an adhesive action. To create a label which, by means of its adhesive layer, properly adheres to the product to be labelled, and which, after removal from the product, leaves behind no adhesive residue, the laminated material can be made to have an intermediate layer coated on both sides with adhesive, and which intermediate layer is configured to exert a stronger adhesive force on adhesive than the products to be labelled will exert on the adhesive. Further, the adhesive deposited on the side of the intermediate layer facing the carrier foil preferably has a lower adhesive strength than the adhesive deposited on the side of the intermediate layer facing the recording medium.

Abstract: A label, and a label sheet and an ink used for the label are disclosed. The label comprises a label sheet comprising an ink-receiving layer comprising a polyolefin having a viscosity average molecular weight of from 5,000 to 6,000,000 as a film-forming component, and heat-transferred patterns comprising an ink comprising a polyolefin having a viscosity average molecular weight of from 5,000 to 300,000 and a coloring agent, formed on the ink-receiving layer.

Abstract: A composite integral sheet of wrap material which includes a first layer of absorbent material containing fibers bearing foraminous hydrophobic water-vapor-permeable pellicles, a second layer of printable material and an impermeable pigmented polymer layer interposed between the first and second layers. Additionally, the absorbent layer will include highly absorbent material formed by in-situ crosslinking of a partially pre-neutralized polyacrylic acid. The composite wrap material has a plurality of air pockets formed between at least one of the first or second layers and the polymer layer, by discontinuously bonding the first or second layers to the polymer material. A method of making the composite integral sheet.

Abstract: An aqueous latex contains a functionalized copolymer prepared by emulsion polymerization. The copolymer can be applied to textile nonwoven materials and to various cellulosic substrates, and when utilized as a binder imparts enhanced properties thereto such as wet tensile strength, low temperature cure rates, and the like. The monomers generally forming the copolymer include at least two functional type monomers, one of which contains an activatable ester group, and at least one latex forming monomer.

Abstract: Disclosed is a transfer paper comprising a support coated on at least one side with a transfer layer having a thickness of not less than 3 .mu.m and at least one constituent layer; with the outermost layer of said transfer layer being a coated layer containing at least a pigment and a binder, and having in the part extending to the depth of at least 3 .mu.m below the surface the hole distribution characterized by having at least one peak which shows the average pore diameter within the range of 0.1 to 1.0 .mu.m and the height ranging from 0.1 to 1.0 ml/g with respect to the pore volume when measured with a porosimeter of mercury injection type.

Abstract: An end paper for permanent waving of hair has a gripping strip of hook-type projections applied to the edge of the end paper. The gripping strip allows for the perming of short coarse hair, and the use of larger rollers than otherwise could be used for short hair. The gripping strip is sewn or affixed onto the end paper.

Abstract: The present invention relates to thermoplastic membranes which are selectively permeable to water or water vapor and which can be simply produced by the lamination of a thermoplastic sheet onto an absorbent material at or around the glass transition temperature of the thermoplastic.

Abstract: The present invention relates to a decorative paper with high abrasion resistance. The present invention provides a thin film containing a thermosetting resin hardener on a sheet of decorative paper. The decorative paper is then impregnated with thermosetting resin. In the press process to manufacture a decorative board, since the thermosetting resin around the printed layer hardens faster than the resin of the raw paper, the resin on the surface is not absorbed and forms a thick hardened film. This provides a decorative board of excellent surface properties including high abrasion resistance.

Abstract: A process for making a polyvinyl chloride and wood composite pellet by extrusion. The polyvinyl chloride and wood fiber are introduced into the extruder at a ratio of approximately 6:4 by weight, respectively. The polyvinyl chloride is melted and blended with the wood fiber so that the interstitial voids of the wood fiber are filled with polyvinyl chloride. After being extruded through a die, the molten material is cut into pellets having a bulk density of preferably between 0.7 to 0.8 gm/mm.sup.3.

Abstract: A composite laminate suitable for preparing release sheets or pressure-sensitive adhesive sheets is described. The composite laminate, in one embodiment, comprises (A) a substrate sheet of paper; (B) a first coating bonded to one surface of the substrate, said first coating comprising a radiation-cured composition acrylic comprising, prior to curing, a mixture of (i) at least one acrylated or methacrylated organic polyamino compound, and (ii) at least one acrylated or methacrylated organic polyhydroxy compound; and (C) a second coating bonded to the other surface of the substrate, said second coating comprising a polyolefin film.

Abstract: A wrapping material comprising a sheet of material such as paper, cellophane, foil, or man-made organic polymer film and a cling material such as polyethylene secured to a portion of the sheet of material. The cling material connects to the sheet of material and/or itself as the wrapping material is wrapped about an item thereby securing the sheet of material about the item. A method of wrapping an item such as a floral arrangement, Easter basket or a gift container by wrapping the item with the wrapping material.

Abstract: A layer element comprises a plurality of monomolecular layers in a regular and alternating arrangement ABABAB . . . on a substrate, wherein A is a layer of a dye whose chromophore has a donor-acceptor structure and B is a layer of cellulose whose hydroxyl groups are at least partly substituted by the radical ##STR1## where R.sup.1 and R.sup.2 are each independently of the other an alkyl radical of from 1 to 4 carbon atoms and R.sup.3 is an alkyl radical of from 1 to 18 carbon atoms or phenyl, tolyl or benzyl. It is useful for nonlinear optics.

Abstract: The invention is drawn to radial block copolymers of the formula:(pS--pI--pB).sub.n Xwherein pS is polystyrene, pI is polyisoprene, pB is polybutadiene, X is the residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is a number greater than or equal to 3 representative of the number of branches appended to X; pressure sensitive adhesive compositions comprising such radial block copolymers and articles of manufacture produced therefrom. The pS component of the radial block copolymers of this invention comprise from about 14 to about 24 parts per 100 parts by weight of the radial block copolymer; the molecular weight (as polystyrene equivalent) of the radial block copolymer is between about 200,000 to about 400,000; and the weight amount of polybutadiene in the pI--pB segment is less than 50 weight percent.

Abstract: A novel transfer element for protecting, graphic arts images is disclosed. The transfer element consists essentially of, a temporary carrier layer, a substantially silane-free protective layer, and an adhesive layer permanently adhered to the protective layer. In particular, the temporary carrier layer is a polymeric sheet material, a foraminous sheet material, or composites thereof; and the protective layer comprises a cross-linked cellulose ester. When the transfer element of this invention is used, the temporary carrier layer is removed, as the final step, from the protective layer which remains substantially intact. The transfer element is useful in manufacturing protected images of all sizes and is particularly suited to protecting large format images such as billboards.

Abstract: A water soluble, or water dispersible, polymeric film comprising a layer of a first polymer resistant to dissolution and/or softening on handling with wet hands, and a layer of a second polymer resistant to insolubilization in water by perborate ions. Such films have a variety of uses particularly when they have a layer of an at least cold water soluble polymer between the layers of the said first and second polymers, for example in the packaging log washing products or agrochemicals. The first polymer layer is preferably discontinuous so that in the large body of water the film has reduced strength so that water can pass through the film when the film is agitated in the water.

Abstract: A biodegradable resin composition including a saponified ethylene-vinyl acetate copolymer and a starch-based macromolecular substance. The saponified ethylene-vinyl acetate copolymer is one having an ethylene content of 20 to 60 mole %, a vinyl acetate saponification degree of not less than 90 mole %, a melt flow index of 1 to 100 g/10 min as measured under a load of 2160 g at 210.degree. C., and a melt viscosity ratio .eta..sub.60 /.eta..sub.5 of 0.5 to 4 where .eta..sub.60 means the melt viscosity after 60 minutes of standing at 250.degree. C. and the .eta..sub.5 means the melt viscosity after 5 minutes of standing at 250.degree. C. and a starch-based macromolecular substance. A layer of the above composition can be used to fabricate a laminate with a substrate material of a different kind, such as a photodegradable polymer.

Abstract: Improved two-component blends which exhibit good adhesion to 4-methylpentene-1 polymers and vinyl alcohol polymers and which may be used as an adhesive interlayer when laminating layers of the polymers are provided. Ethylene-alkyl acrylate copolymers, preferably ethylene n-butyl acrylate copolymers, and modified propylene polymers, preferably maleic anhydride grafted statistical propylene-ethylene copolymers and propylene-ethylene impact copolymers, are combined to obtain the blends of the invention. Useful laminated structures comprised of a layer of poly-4 -methylpentene-1 homopolymer or copolymer, a layer of the adhesive blend and a layer of ethylene-vinyl alcohol copolymer with one or more optional layers, such as a paperboard, are also disclosed.

Abstract: Polymers containing a high percentage of vinyl alcohol units, especially when treated to remove impurities, when blended with copolymers of alkyl (meth)acrylates, N-vinyllactams or N-vinylamides, and unsaturated acids, preferably further with a small amount of plasticizer, may be applied as hot melt adhesives to paper, wood, and other cellulosic articles.

Abstract: A latex binder which has very low or nil amounts of aldehyde such as formaldehyde is made utilizing a compound having the formula: ##STR1## wherein R.sup.1 is generally an alkyl having from 1 to 6 carbon atoms, with methyl being preferred; wherein R.sup.2 and R.sup.3, independently, is preferably hydrogen, or allyl, or an alkyl having from 1 to 12 carbon atoms, or an alkyl-substituted aromatic having from 7 to 15 carbon atoms, wherein R.sup.4 is an alkylene having from 1 to 4 carbon atoms, with ethylene being preferred; and wherein R.sup.5 is hydrogen or an alkyl having from 1 to 4 carbon atoms, with methyl being preferred. The latex binder is generally an emulsion or latex copolymer made from at least one or more conjugated dienes having a total of from 4 to 10 carbon atoms with butadiene being preferred and one or more vinyl-substituted aromatics having from 8 to 14 carbon atoms, with styrene being preferred. The amount of the above formulation compound is generally from at least 0.

Abstract: A process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic latex having a second-order transition of at least 80.degree. C. and an average particle size of smaller than 100 nm to produce a coated printing paper having both superior printability and gloss. Another process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic latex having a second-order transition of at least 80.degree. C. an average particle size of smaller than 100 nm and lubricants, and treating the surface layer with a calender at a temperature, to produce a coated printing paper having both superior printability and high gloss.

Abstract: The invention provides pressure-sensitive adhesive (PSA) compositions comprising a graft copolymer of one or more of ethylene and C.sub.3 -C.sub.18 .alpha.-olefins and one or more of a new class of macromonomers. The adhesive composition comprises a blend of the graft copolymer with a tackifying resin. Sheet materials can be coated with layers of the adhesive composition to provide tapes and laminates.

Abstract: A composite material comprising a base liner with a release layer on at least one surface thereof, and a releasable face layer releasably adhered to the base liner through the release layer by a pressure sensitive adhesive, wherein the base liner has a skin layer on its surface proximate to the release layer which is more difficult to cut than the remainder of the base liner material, such that when the composite is subjected to die cutting or perforating to allow portions of the face layer to be selectively removed, the cutter will not penetrate into or through the base liner to any substantial extent.

Abstract: A recording material and coating therefor for an ink jet process wherein the coating forms an ink absorbing layer on a support material. The coating contains a hydrophilic binder and an oxidized polyethylene, and the oxidized polyethylene is present in the aqueous coating material which forms the ink absorbing layer as a cationic active emulsified oxidized polyethylene.

Abstract: A disposable body towel includes a tie and apertures for retaining the towel around a bather. The disposable towel comprises a flexible substantially planar non-woven laminated sheet having top, bottom and side edges and includes a plurality of fibrous water absorbent cellulose plies. The sheet includes an outer ply and an inner ply, wherein the outer ply is water absorbent. The sheet possesses sufficient structural strength when wet to resist degradation in the presence of liquids and is sized to substantially cover a body. The inner and outer plies are bonded together by biodegradable resin at the side edges, thereby reinforcing said side edges for providing additional resistance to tearing. The sheet includes an adjustable tie attached to said top edge and apertures along said top edge for securing the towel about the body as said towel is positioned to substantially cover the body.

Abstract: An absorbent pad for use with meat and poultry products in retail sale packages has a laminated tissue absorbent mat sandwiched and sealed between upper and lower plastic sheets. The pad is perforated by penetration of perforating pins entirely through the pad to develop a series of holes for the passage of liquid from the meat package into the absorbent mat inside the pad. A myriad of outwardly projecting tufts of tissue material are developed along the underside of the pad by the perforating pins. These tufts develop a wicking effect which enhances the capillary action of the tissue layers inside the pad. Methods of fabrication of the individual pads and continuous linear absorbent sheet material are also disclosed.

Abstract: Provided are wrappings for foods comprising a laminated composite sheet which comprises an impermeable sheet, an absorbent fiber sheet and a hydrophobic fiber sheet, said hydrophobic fiber sheet having a water resistance of at least 5 cmH.sub.2 O and an air permeability of at least 10 c/cm.sup.2 /sec. Also provided are bags and boxed fabricated from the above wrappings.These wrappings are microwaveable and have heat insulation property.

Abstract: In this method of making a protective and/or decorative coating and the coating material thus made, the material preferably comprises a base plate (10) made of a synthetic polymer and a coloured layer (11) deposited on one of its surfaces which may be made of synthetic inks or replaced by natural timber. It preferably has a hard, abrasion resistant coating (13) on the front face and a protective coating (12) at the back face.

Abstract: A data-carrying laminate such as a credit card or identity card comprises a sheet of cellulosic material or synthetic material and a thermoplastic polymeric film, at least one of said sheet and said thermoplastic film carrying data, said sheet and said thermoplastic film being bonded together by a cured adhesive layer obtained by curing a solid film adhesive comprising (A) a solid polymer of a vinyl carboxylic acid and (B) a curable material having at least one acrylate or methacrylate group.

Abstract: Disclosed are cellulosic sheet material, e.g., liner board, coated with an aqueous emulsion of polystyrene or styrene-alkyl acrylate copolymers, which when dried impart, inter alia, skid or slip resistant properties to the sheet material. The polymer has a glass transition temperature of, for example, 70.degree. C. to 100.degree. C. and an average particle size of from 70 to 150 nanometers.

Abstract: An imaged transparency comprised of a supporting substrate, oil absorbing layers comprised of, for example, chlorinated rubber, styrene-diene copolymers, alkylmethacrylate copolymers, ethylene-propylene copolymers; sodium carboxymethyl cellulose, or sodium carboxymethylhydroxyethyl cellulose; and ink receiving polymer layers comprised of, for example, vinyl alcohol/vinyl acetate, vinyl alcohol/vinyl butyral, or vinyl alcohol/vinyl acetate/vinyl chloride copolymers. The ink receiving layers may include therein, or thereon fillers such as silica, calcium carbonate, titanium dioxide.

Abstract: In the support member for photographic printing paper of the present invention, a white reflective layer is placed on a base material by coating and drying a coating composition, said coating composition contains a white pigment having titanium oxide as principal component and a binder having a copolymer of vinyl chloride - vinyl acetate and maleic acid anhydride soluble in organic solvent and having polymerization degree of 250 or more, said copolymer containing vinyl chloride, vinyl acetate and maleic acid anhydride by component ratio of 20-90 weight %: 5-50 weight %: 2-10 weight %. Thus, the support member can provide photographic image with high resolving power, has high bonding property with base material and silver halide emulsion layer, is easier to produce, and causes discoloring less frequently due to time or heat.

Abstract: A packaging material useful for the controlled atmosphere packaging in bulk of fresh produce, comprising a liner material and a supporting cardboard substrate, wherein the liner material comprises an open cell foamed adhesive portion and a substantially solid thermoplastic film portion in face-to-face relationship.

Abstract: An image-receptive heat transfer paper which includes: (a) a flexible cellulosic nonwoven web base sheet having top and bottom surfaces; and (b) an image-receptive melt-transfer film layer overlaying the top surface of the base sheet, which film layer is composed of from about 15 to about 80 percent by weight of a film-forming binder and from about 85 to about 20 percent by weight of a powdered thermoplastic polymer, wherein each of the film-forming binder and the powdered thermoplastic polymer melts in the range of from about 65 to about 180 degrees Celsius and the powdered thermoplastic polymer consists of particles which are from about 2 to about 50 micrometers in diameter.

Abstract: A laminated material having a latent inherent delamination potential which contains at least one layer comprising a thermoplastic, wherein the thermoplastic carries, at least on one side, a release layer of water-soluble or water-dispersible organic material. The material can be delaminated by a process of chopping the material and treating the material with water or steam. The laminated material is useful as, for example, a packaging material. The material can easily be delaminated into its individual layers, thus facilitating recycling of the materials.

Abstract: Adhesive composition comprising a blend consisting essentially of (1) an adhesive composition comprising a tacky pressure-sensitive adhesive, said adhesive preferably selected from rubber-based adhesives, e.g., the thermoplastic elastomers, and (2) a pressure-sensitive adhesive composition comprising a polymer having in its backbone at least a major portion by weight of polymerized monomeric acrylic or methacrylic acid ester of a non-tertiary alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4 to about 12, and grafted to the backbone, polymeric moieties having a Tg greater than about 20.degree. C. and a weight average molecular weight above about 2,000. The pressure-sensitive adhesive of adhesive composition (1) has moieties, e.g., blocks or grafts, that associate with the polymeric moieties grafted to the backbone of the polymer of adhesive composition (2).

Abstract: A process is provided for producing a coated printing paper by first applying a pigment containing layer, superposing thereon a surface layer of a thermoplastic polymeric latex having a second-order transition temperature of at least 80.degree. C., and treating the surface layer with a calendar at a temperature less than the second-order transition temperature, to produce a coated printing paper having both superior printability and high gloss.

Abstract: Disclosed is a recording sheet which comprises a substrate; a first coating in contact with the substrate which comprises a crosslinking agent selected from the group consisting of hexamethoxymethyl melamine, methylated melamine-formaldehyde, methylated urea-formaldehyde, cationic urea-formaldehyde, cationic polyamine-epichlorohydrin, glyoxal-urea resin, poly (aziridine), poly (acrylamide), poly (N,N-dimethyl acrylamide), acrylamide-acrylic acid copolymer, poly (2-acrylamido-2-methyl propane sulfonic acid), poly (N,N-dimethyl-3,5-dimethylene piperidinium chloride), poly (methylene-guanidine) hydrochloride, poly (ethylene imine) poly (ethylene imine) epichlorohydrin, poly (ethylene imine) ethoxylated, glutaraldehyde, and mixtures thereof; a catalyst; and a polymeric material capable of being crosslinked by the crosslinking agent and selected from the group consisting of polysaccharides having at least one hydroxy group, polysaccharides having at least one carboxy group, polysaccharides having at least one sulf

Abstract: A paper-plastic film, fiberglass-reinforced sealing tape for sealing a carton, a package, or any other article fabricated of recyclable material. The tape includes a paper inner ply whose exposed face is pregummed, whereby the tape is adherable to the article to be sealed, and a synthetic plastic film outer ply laminated by a water-based adhesive to the inner ply. Sandwiched between the inner and outer plies is a longitudinal array of fiberglass strands serving to reinforce the tape. When an article sealed by the tape is to be recycled, then the outer plastic ply, which cannot be recycled, is stripped from the tape.

Abstract: An ink jet recording sheet comprises on a film substrate a coating layer which contains a pigment component and a binder component. The pigment component comprises prismatic orthorhombic aragonite calcium carbonate having an oil absorption of 30 to 55 ml/100 g in an amount of 20 to 70 weight %. The binder component comprises an epoxy resin and a thermoplastic resin.

Abstract: Modified cellulose esters are described that are prepared by grafting melamine moieties onto the backbone of cellulose esters. The resulting materials are useful in coating applications for wood, leather, and metal substrates and yield highly solvent-resistant coatings with enhanced properties when heated in the presence of an acid catalyst.

Abstract: A thermosetting resin composition comprising(A) 60 to 95% by weight of a prepolymer or precopolymer selected from the group consisting of (A-1), (A-2) and (A-3) below,(A-1) a prepolymer of diallyl phthalate,(A-2) a precopolymer of diallyl terephthalate derived from diallyl terephthalate of the following formula (1) ##STR1## and an aromatic benzyl hydrocarbon having at least one hydrogen atom at the benzyl position and represented by the following formula (2) ##STR2## wherein each of R.sup.1 and R.sup.2 represents a member selected from the class consisting of a hydrogen atom and lower alkyl groups, and n is an integer of 1 to 3, and(A-3) a mixture of (A-1) and (A-2), and(B) 40 to 5% by weight of a polyacrylate or polymethacrylate of dipentaerythritol having at least 4 acryloyl or methacryloyl groups in the molecule and represented by the following formula ##STR3## wherein each R.sup.3 represents a hydrogen atom, --COCH.dbd.CH.sub.2 or ##STR4## and at least four R.sup.3 groups represent --COCH.dbd.CH.sub.

Abstract: A multiple ply tubular core having continuous vapor barrier layers near the inner and outer surfaces of the tube. The vapor barrier layers have overlying and underlying layers comprising fibrous cellulosic material. The tube is stable to dimensional changes caused by absorption or loss of moisture to the atmosphere.

Abstract: A medical material comprising a high-molecular weight material and a heparin derivative is provided, which high-molecular weight material comprises a high-molecular weight compound having functional groups capable of binding with epoxy groups, a compound having at least two amino groups and a polymer having a number of epoxy groups, said functional groups and some of said amino groups being bound to said epoxy groups, and which heparin derivative comprises heparin and an epoxy compound having at least two epoxy groups part of which is bound to amino groups in the heparin, the amino groups not bound to the epoxy groups in said high-molecular weight material being bound to the epoxy groups not bound to the amino groups in the heparin derivative. Also provided are an intermediate (high-molecular weight material) to be used for said medical material, as well as processes for producing said medical material and said intermediate.

Abstract: Laminated composite consisting of a substrate sheet coated with a film (A) comprising at least one layer based on a polyamide resulting from the polycondensation of an aliphatic .alpha., .omega.-dicarboxylic acid with xylylenediamines.