Abstract: Copolymers of(A) perfluoroalkylethyl acrylate C.sub.n F.sub.2n+1 CH.sub.2 CH.sub.2 OCOCH.dbd.CH.sub.2(b) higher alkyl acrylate C.sub.m H.sub.2m+1 OCOCH.dbd.CH.sub.2(c) vinylidene chloride CH.sub.2 .dbd.CCl.sub.2(D) acroylbutylurethane CH.sub.2 .dbd.CH--CONHCOOC.sub.4 H.sub.9 at the weight ratio of 1(A) : 0.22-0.39(B) : 0.45-0.85(C) : 0.01-0.15(D) n being 6, 8, 10, 12 or 14 and m being a number from 10 to 16.They are prepared by conventional methods for preparing copolymers and are used as oil - and water repellents for porous materials, especially textile materials.

Abstract: A laminated structural member is fabricated with one layer of sheet material such as plywood or fiberboard and an adjacent layer bonded thereto and formed from a mixture of scrap particles of thermoplastic wire and cable insulation, wood particles, comminuted paper, sawdust, and a suitable resin binder. The fabrication procedure is carried out by initially forming a mixture of reclaimed thermoplastic wire or cable insulation, a thermosetting binder, and one or more wood like fillers, such as wood chips, comminuted paper and sawdust and mold release agent. The mixture is then placed in a mold with the sheet material and is subjected to heat and pressure to form a structural member.

Abstract: A paper coating dye composition wherein synthetic binding agents partially or totally replace casein and also containing a water retention agent, is described.

Abstract: The invention of the present application comprises a high loft, low density, nonwoven fibrous material and method of making the same. The material has good wet strength, softness, abrasion resistance, and liquid absorbency and retention, and is formed of a plurality of irregularly arranged, intersecting, overlapping, mechanically interengaged, loosely assembled fibers including both synthetic and natural wood pulp fibers which are present in different proportions in various regions parallel to the median plane of the material. Segments of said synthetic wood pulp fibers are heat fused with other segments of synthetic wood pulp fibers and with segments of other fibers at a plurality of junctures throughout the fibrous material to form a self-supporting fibrous structure which does not require any additional binder.

Abstract: A high loft, low density, nonwoven fibrous material is provided comprising two layers of irregularly arranged, intersecting, overlapping, mechanically interengaged, loosely assembled fibers, one of the layers including thermoplastic synthetic wood pulp fibers at least in the portion thereof at the interface to the other layer, at least some of the thermoplastic synthetic wood pulp fibers in the one layer being in contact with and fused with segments of fibers of said other layer.The material is produced by air-laying the aforementioned layers successively so that some thermoplastic synthetic wood pulp fibers in one layer are in contact with some fibers in the other layer, and then applying heat without pressure to fuse and bond at least some of the thermoplastic synthetic wood pulp fibers in one layer to fibers in the other layer.

Abstract: A process for producing nonflammable laminated materials which includes the steps of impregnating a cellulose-containing material with an impregnating solution containing a phenolic-resol resin solution, at least one plasticizer for the resin and optionally flameproofing agents, subsequently drying the impregnated material to effect preliminary condensation of the resin and thereafter curing superimposed layers of the impregnated and preliminary condensed material by the application of heat and pressure. The phenol-resol resin solution used contains 50-80% by weight of an ammonia alkaline-condensed phenol-resol resin with a solids content of 65-80% by weight and with a molecular weight distribution determined by gel chromatography of: dimers 20-26%; tri- and tetramers 6-12%; penta- and oligomers 24-36%; expressed in percent per unit area and hexamethylenetetramine in amounts of 1-15% by weight based on the weight of the impregnating solution.

Abstract: Phenolic resins employed in the manufacture of high-pressure decorative laminates are modified by the addition of a partially etherified melamine-formaldehyde resin which is the reaction product of melamine, formaldehyde, an aliphatic polyol and furfural. The modified phenolic resin exhibits better penetration and flow properties and cures more rapidly. Laminates made with this modified resin can be manufactured at lower pressures and without the lengthy in-press cooling step of the prior art. Moreover, the laminates so produced possess enhanced flexibility due to the internal plasticizing effect of the modifier of the present invention.

Abstract: A cellulosic substrate is rendered fire resistant through application thereto of an alcohol deactivated solution of chlorosulfonic acid and digested plant material.

Abstract: Stable test strips for the detection of components in liquids, for example blood, ketone bodies and nitrates in urine, includes two indicator layers one of which is a water-soluble paper.

Abstract: A highly machinable, shapeable decorative laminate is made from a non-abrasive base core consisting of a plurality of sheets, each sheet consisting essentially of cotton linter fibers in paper form containing a curd phenolic resin, the core having superimposed thereon a print sheet impregnated with a cured thermoset resin.

Abstract: In preparing a dry, laminating impregnated paper or cloth by impregnating a paper or cloth with a resin solution containing a polymerization catalyst, a cross-linking monomer and, if necessary, a releasing agent, followed by drying, the use as the resin of a resin composition consisting of (A) 10 to 90 % by weight of an organic solvent-soluble diallyl phthalate prepolymer having an average molecular weight of 2,000 to 20,000 and a softening point of 70.degree. to 140.degree. C. which prepolymer has been obtained by partially polymerizing a diallyl phthalate monomer and separating and purifying the resulting prepolymer, and 90 to 10 % by weight, in total, of (B) an organic solvent-soluble non-crystalline unsaturated polyester and (C) an organic solvent-soluble benzoguanamine resin obtained by condensing in an alkaline reaction system 1 mole of benzoguanamine with 1 to 4 moles of formaldehyde, the weight ratio of (C)/(B) being up to 0.

Abstract: A heat-sensitive recording material which contains as color former at least one compound of the general formula ##STR1## wherein R.sub.1 and R.sub.2, which can be the same or different, represent hydrogen, alkyl of at most 12 carbon atoms which is unsubstituted or substituted by cyano or halogen, alkoxyalkyl of 2 to 8 carbon atoms, benzyl or phenyl, R.sub.3 represents hydrogen, halogen, nitro, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, andZ represents alkenyl of at most 12 carbon atoms, unsubstituted or ring-substituted aralkyl or aralkenyl, or represents the radical of a reactive organic methylene compound or of a heterocyclic compound which does not contain active methylene groups.

Abstract: A composite dry process hardboard includes a hardboard panel consisting of pressed defibrated and refined wood chips, plus a surface layer of paper cemented to the hardboard by a cured resin made from phenolic resin mixed with water and ethylene glycol. If desired, an embossed pattern may be incorporated into pressing the paper overlay. In the subject process, first a mass of defibrated wood chips is mixed with a binding agent, the mass is then formed into a mat which is coated with a mixture of phenolic resin and polyhydric compound such as a polyhydric alcohol having a boiling point higher than water. Then, a dry sheet of paper is laid on the mat and the composite structure is then cured by the application of heat and pressure.

Abstract: A specially prepared paper bond liner, gypsum wallboard, and gypsum wallboard process which bonds the liner to the core by an adhesive confined to the paper-core interface, the adhesive comprising certain starches placed on the bond liner in their raw state.

Abstract: The invention relates to oil-modified phenolic resole varnishes particularly useful for impregnating paper laminates. Specifically, the invention relates to such compositions in which an economical and useful mixture of alcohols is used as the reaction medium for the resole formation. Laminates prepared using the varnish are characterized by salutary qualities.

Abstract: Thermosensitive recording material for use in thermal printing, which is composed of a coating composition applied on a support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200.degree. C or higher, (d) a filler, (e) a metal salt of a higher fatty acid and (f) a wax, said recording material having a Bekk surface smoothness of 100 to 500 seconds.

Abstract: Metal-modified para-substituted phenol-aldehyde novolak resins suitable for use in pressure sensitive manifolding systems are produced by melting and mixing together a para-substituted phenol-aldehyde resin and a metal alkanoate salt in the presence of an ammonium compound.

Abstract: The application discloses a mixture of high molecular weight hard resins such as polymethyl methacrylate, cellulose acetate butyrate, and cellulose nitrate containing a minor proportion of a very viscous or solid oligomer of one or more vinyl monomers such as methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, tertiary butyl methacrylate, isobutyl methacrylate, or tertiary butyl acrylate, which monomers when polymerized give a polymer which has a glass transition temperature calculated by the formula used for high molecular weight polymers to be at least 30.degree. C., and preferably at least 50.degree. C. The oligomers have a number averaging chain length of 4 to 25 mers. They have a narrow molecular weight distribution such that the ratio of the weight average molecular weight to the number average molecular weight is 2 or less, preferably less than 1.5. This ratio is referred to as the heterogeneity index.

Abstract: Reaction products between monomeric epichlorohydrin and a tertiary amine when applied to the surface of a substrate, such as paper, produce an electroconductive surface useful in electrographic image reproduction. Both a coated paper product and a process of producing it are provided.

Abstract: A paper covered gypsum board and a process for its manufacture, with at least one cover of the board comprising a multiply paper sheet containing a major proportion of cellulosic fibers and a minor proportion of short mineral fibers.

Abstract: Disclosed herein are decorative laminates meeting N.E.M.A. standards which have high impact resistance, flexural strength, and low water absorption qualities suitable for surface veneering wherein the core stock paper is made from 10% to 100% of newspaper or newsprint pulp which in the preferred practice of the invention is substituted for either the pine portion of the core sheet or the hardwood portion.

Abstract: Solid lignocellulosic material is bonded into a strong solid mass by treating with a liquid carrier containing an oxidant, and pressing under heat and pressure in a conventional unsealed press for a period of time sufficient to effect bonding by oxidation. Plywood formed of wood veneers is advantageously formed. Catalysts or other modifying agents may be employed with the oxidant.

Abstract: The production of substitute textile materials is achieved by impregnating one or more creped tissue paper sheets with an extensibility of between 3% and 100% and a weight of 15-30 grams per square meter, which may be laminated with impregnated or unimpregnated similar sheets of creped tissue paper, with a vinyl chloride polymer.

Abstract: Fire retardant reconstituted cellulosic products are produced having fire retardancy substantially equal to conventional fire retardant products by impregnation of a portion of bark with a fire retardant and mixing said impregnated bark portion with another portion of bark which is untreated with a fire retardant. Additionally, a portion of wood chips is impregnated with a fire retardant and mixed with another portion of wood chips untreated with a fire retardant. Subsequently, the combined portions of bark and wood chips are formed into a three layer composite particleboard, having a bark core and wood chip surface, by pressing and heating.

Abstract: A thermosensitive record medium comprising a base sheet coated with a thermosensitive mixture resulting by mixing together a crystal violet lactone and a phenolic compound in a binding and dispersing agent comprising at least 5% of nonionic cellulose ether. The use of this binder improves the stability of the mixture avoiding any unusual color reaction.

Abstract: An adhesive composition comprising, of the total composition of 100 parts by weight, 90-99 parts by weight on a tacky copolymer of an alkyl acrylate, the alkyl group of which contains 1 to 14 carbon atoms and the average number of which carbon atoms is 4 to 12, with a compound having a double bond and copolymerizable therewith, and 10-1 parts by weight of a hydroxyethyl cellulose.

Abstract: A method of manufacture from a predetermined material, especially from a natural fibrous material and/or synthetic fibrous material of an article, in particular a sheet for printing or reproduction, which combines superior qualities of brightness, opacity, thermal stability, insolubility and lightness, said method consisting of laoding said material throughout its mass or superficially, with a filler product having a base of a methylene urea precipitate with a low degree of polymerization, obtained by the reaction of urea on formaldehyde in an acid medium.

Abstract: Laminar reflective platelets are made by coating a first synthetic resin lamina on a carrier web and providing release means such as a release coat to provide for release of the lamina. A metallic lamina is coated onto the synthetic resin lamina by vapor deposition in vacuum and a third optional synthetic resin lamina may then be coated onto the metal layer. Each of the three laminae has a thickness on the order of one to 3 millionths of an inch. The thus-coated web is immersed in a releasing solvent to activate the release means. The laminate is removed from the carrier by reason of solution or partial solution of the release coat or release means in the solvent. Removal may be aided by mechanical means such as brushing or scraping. The solvent is agitated to reduce the laminar platelets to final size. Laminar platelets thus formed have a thickness of from 0.5 to 5 millionths of an inch; each has a diffuse reflectance of from 75 to 95%, and 90 to 100% pass through a 300 mesh screen.

Abstract: This invention relates to a decorative plastic laminate preferably one having a high wear resistant decorative surface in which the various layers have controlled wear indices so as to provide the laminate with improved uniform machineable properties.

Abstract: A specially prepared fiber reinforcement and improved gypsum wallboard are disclosed. The fiber reinforcement includes a multiplicity of relatively long fibers which are disposed at the interface of the core and cover sheets of the wallboard and are adhesively bonded to the cover sheets and incorporated predominantly into the portion of the core immediately adjacent to the cover sheets.

Abstract: High yield resin saturable papers containing total lignin, based on paper weight, in amounts from about 8 up to 15 percent are employed as core stock for high pressure decorative melamine laminates. At least 65 percent of the fibers should be hardwood fibers. Up to 35 percent of softwood fibers may be present but then the softwood lignin, based on paper weight, should not be greater than about 2.8 percent.

Abstract: Aqueous slurries or dispersions of starch are reacted with imadazolides of carboxylic or sulfonic acids to yield starch ester derivatives. These starch products can also be prepared in non-aqueous solvents or by a dry reaction process.