Abstract:
A PROCESS FOR THE PRODUCTION OF SANDWICH CONSTRUCTIONS CONSISTING OF (A) AN INNER PLY OF POLYETHYLENE; (B) ADHESION-PROMOTING INTERLAYERS APPLIED TO BOTH SIDES OF THE INNER PLY AND (C) OUTER PLIES OF METAL APPLIED TO THE TWO INTERLAYERS. IT IS A CHARACTERISTIC FEATURE OF THE INVENTION THAT SHEETING IS PREPARED CONTINUOUSLY FROM A SPECIAL POLYETHYLENE BY MEANS OF A SCREW EXTRUDER AT A SPECIFIC TEMPERATURE OF THE MATERIAL, THIS SHEETING IS COVERED ON BOTH SIDES WITH A FILM OF A SPECIAL TERPOLYMER BY MEANS OF A PAIR OF ROLLERS, THE RESULTANT LAMINATE IS THEN COVERED CONTINUOUSLY BY MEANS OF A PAIR OF ROLLERS AT A SPECIFIC TEMPERATURE OF THE MATERIAL WITH METAL SHEETING HAVING A SPECIFIC TEMPERATURE AND THE WHOLE IS COMBINED TO FORM A SANDWICH PANEL UNDER A SPECIFIC ROLLER PRESSURE. THE PROCCESS GIVE SANDWICH CONSTRUCTIONS HAVING PARTICULARLY GOOD CHEMICAL AND PHYSICAL PROPERTIES IN A SIMPLE WAY.
Abstract:
A process for the production of sandwich constructions consisting of (a) an inner ply of polyethylene; (b) adhesionpromoting interlayers applied to both sides of the inner ply and (c) outer plies of metal applied to the two interlayers. It is a characteristic feature of the invention that sheeting is prepared continuously from a special polyethylene by means of a screw extruder at a specific temperature of the material, this sheeting is covered on both sides with a film of a special polymer by means of a pair of rollers, the resultant laminate is then covered continuously by means of a pair of rollers at a specific temperature of the material with metal sheeting having a specific temperature and the whole is combined to form a sandwich panel under a specific roller pressure. The process gives sandwich constructions having particularly good chemical and physical properties in a simple way.
Abstract:
A process for the production of plane building components, comprising relatively thick inner ply of a thermoplastic and relatively thin outer plies of metal. In the process a board is prepared continuously from a polyethylene by means of an extruder at elevated temperature, the board thus obtained is continuously covered on each side first with a film of an ethylene polymer containing carboxyl groups by means of at least one pair of rollers and then with metal sheeting, the whole being made into a sandwich assembly under roller pressure and the plane building component formed being cooled to ambient temperature.
Abstract:
A PROCESS FOR THE PRODUCTION OF PLANE BUILDING COMPONENTS WHICH ARE COMPOSED OF A RELATIVELY THICK INNER PLY OF A THERMOPLASTIC AND RELATIVELY THIN OUTER PLIES OF METAL. IN THE PROCESS A BOARD IS FIRST MADE CONTINUOUSLY FROM A POLYETHYLENE BY MEANS OF A SCREW EXTRUDER AT ELEVATED TEMPERATURE THEN THIS BOARD IS COATED ON BOTH SIDES BY MEANS OF A PAIR OF ROLLERS CONTINUOUSLY WITH A FILM OF A SPECIAL TERPOLYMER AND THEREAFTER WITH A SHEET OF METAL. THE WHOLE IS MADE INTO A SANDWICH ASSEMBLY BY THE PRESSURE OF THE ROLLERS AND THEN BROUGHT TO AMBIENT TEMPERATURE.
Abstract:
1,269,258. Laminates. BADISCHE ANILIN- & SODA-FABRIK A.G. 26 Aug., 1969 [27 Aug., 1968], No. 42446/69. Heading B5N. A method for the production of a flat structural sandwich comprises continuously preparing sheeting 4 by means of a screw extruder 2 at a material temperature of from 120 to 220 C. from a polyethylene having a density of from 0.918 to 0.930 g./cm. 3 and melt index (ASTM D 1238-65 T) of from 0.2 to 5, continuously covering the sheeting on each surface by a pair of rollers 7 with a film 6 having a thickness of 0À01 to 0.2 mm. of a terpolymer containing 60 to 90% by weight of ethylene units, 0.5 to 20% by weight of units of an ethylenically unsaturated carboxylic acid e.g. acrylic acid and 0À5 to 20% by weight of units of an ester of an ethylenically unsaturated carboxylic acid e.g. t-butyl acrylate, the resultant laminate being continuously covered on each surface by a pair of rollers 9 with metal sheeting 8 e.g. aluminium, copper, brass or steel, having a thickness of from 0.05 to 2.5 mm. and at a temperature of from 100 to 250 C., the whole being bonded into a sandwich construction by the rollers 9 under a pressure of from 5 to 50 kp/cm., the product being cooled in cooling zone 10 to a temperature of less than 60 C. and cut into panels by cutting means 11.
Abstract:
Reaction products of polymers containing reactive groups with dyes also containing reactive groups are applied to textile materials and cross-linked with or without a cross-linking agent, by way of the remaining reactive groups of the polymer. The dyestuffs may contain a large number of specified reactive groups including acid amide, ureido, carboxylic acid, and suplhonic acid and their ester groups, aldehyde, epoxy, N-methylol and N-methylol ether groups. The polymers may be homo- or copolymers made up of monomers bearing suitable reactive groups as well as inert monomers or the reactive groups may be introduced after polymerization. The specified reactive groups are: amino, hydroxyl, aldehyde, carboxylic acid and ester groups, lactone, carbonamide carbonimide, carbamido, melamine, dicyandiamide, carbamate, epoxy, N-methylol, N-methylol ether, chlorhydrin, isocyanate, active methylene, acid chloride and anyhdride groups, reactive halogen atom, C=C bonds capable of addition and not taking part in the polymerization thiourea the thioisocyanate groups. The polymers may be prepared by solution, emulsion, bulk or precipitation polymerization. In the examples the following copolymers are reacted with monoazo dyes containing N-methylol groups and are prepared from: (3) butyl acrylate and N-methylolacrylamide in aqueous emulsion (7) acrylamide, butyl acrylate, vinyl propionate, acrylonitrile and vinyl acetate in toluene-butanol (1:1) solution, (8) acrylamide N-methylolmethacrylamide and ethyl acrylate by precipitation from butanol, (9) to (13) as in (3), (14) isobutyl acrylate, acrylonitrile, vinyl chloride and N-methylolmethacrylamide in aqueous dispersion (15) butyl acrylate, acrylonitrile and N-methylolmethacrylamide from aqueous dispersion, (16) butyl acrylate, styrene and N-methylolmethacrylamide from aqueous dispersion, (17) butyl acrylate, vinyl chloride, methyl acrylate and acrylamide from aqueous disperson and (18) as in (15). The following cross-linking agents are employed: the tetrabutyl ether of tetramethylolglyoxaldiureine, butanediol-1, 4-bis-(N-methylolurethane) and a urea-formaldehyde precondensate partly etherified with methanol. Specifications 744,877, 799,781, 842,802, 850,977, 900,764 and 946,471 are referred to.ALSO:Dyeing and/or printing textiles and simultaneously resin finishing them in a process wherein a polymer containing reactive groups is reacted by way of part of said reactive groups with a dye also containing reactive groups, the macromolecular coloured compound thus obtained is applied to the textiles and cross-linked by way of the remaining reactive groups, or the polymer containing reactive groups, the reactive dye and, if necessary, a cross linking agent are applied to the textiles and the reactions are effected in a simple operation on the fibre. The textiles may be of cotton, spun rayon, cellulose acetate and triacetate, synthetic polyamides, acrylonitrile polymers and copolymers and especially polypropylene. The polymers may be homopolymers or copolymers and may be prepared from a large number of specified monomers by aqueous or organic solution polymerization, aqueous emulsion, bulk or precipitation polymerization. Alternatively polymers may be employed in which the reactive groups are introduced after polymerization. The dyestuffs may contain any of a large number of specified reactive groups including N-methylol acid amide, acid imide, ureido, carboxylic acid sulphonic acid ester aldehyde, N-methylol and N-methylol ether groups. The polymers, dyestuff and, if required cross-linking agents may be applied all together, separately or in any desired combination. A dyeing step at 60-110 DEG C. is advantageous before the final curing at temperatures up to 200 DEG C. The polymer solutions or dispersions may further contain other textile finishing resins, including urea-and melamine-formaldehyde condensates as well as many natural, synthetic and semi-synthetic known substances. The composition may be applied by padding or printing. The polymers of the present process may also be used for bonding non-woven fabrics, as a resin over a naphthol bottoming or under amiline black and, when a suitable discharging agent (e.g. sodium hydroxymethane sulphonate) is included for discharging direct dyes. Examples of dyeing and finishing are given. Specifications 744,877, 799,781, 842,802, 850,977, 900,764 and 946,471 are referred to.
Abstract:
Polymeric compounds united by chemical combination with dyes are made by reacting a homopolymer or copolymer containing groups that enable to be reacted with other compounds by condensation or addition reactions with a dye also containing reactive groups, and cross-linking the polymer by way of the reactive groups of the polymer which are still available, either simultaneously or subsequently. Monomers containing reactive groups from which such polymers may be prepared are acrolein, acrylamide, N-methylolacrylamide, crotonamide, ethacrylamide, chloroacrylamide, phenylacrylamide, maleic, fumaric, citraconic and itaconic diamides, N-acryloyl and N-methacryloyl ureas and dicyanodiamides amino-allyloxytriazines, glyoxalmonocureine allyl ether, glycidyl acrylate and butanediol monoacrylate. Such monomers may be copolymerized with monomers such as styrene, butadiene, isoprene, nitriles, amides, esters, anhydrides and salts of acrylic, methacrylic, crotonic, maleic, fumaric, itaconic and citraconic acids, vinyl acetate, propionate or butyrate, vinyl chloride and bromide, allyl esters, vinyl carbazole pyridine, imidazole and quinoline and vinyl pyrrolidone and caprolactam. Alternatively, reactive groups may be introduced into polymers by after-treatment, e.g. by hydrolysis, reduction or halogenation. Dyes containing reactive groups are specified in Specifications 744,877, 779,781, 842,802, 850,977, 900,764 and 946,471. The polymers may contain self cross-linking groups, in which case the action of heat or change in pH value may effect cross-linking, or an external cross-linking agent may be employed. The examples describe the following processes: (1) a copolymer of butyl acrylate, styrene, and N-methylolmethacrylamide in aqueous dispersion is mixed with an aqueous solution of the coupling product of diazotized N-(p-aminophenyl)-glyoxal-diureine and gamma - acetylaminonaphthol-(1)-3,6-di-sulphonic acid and ammonium nitrate, and from the resulting dispersion a violet-red film is produced which cross-links on heating at 140 DEG C.; (2) a non-woven fabric is impregnated with a mixture of an aqueous dispersion of a copolymer of butylacrylate and acrylamide, an aqueous solution of a coupling product of diazotized N-(p-aminophenyl)-glyoxaldiureine with 1-(p-sulphophenyl) -3- methylpyrazolone-(5) which has been reacted with formaldehyde, dimethylol urea and ammonium nitrate, and the impregnated fabric is dried and heated at 150 DEG C.; (3) a mixture of a copolymer of acrolein, butyl acrylate and styrene, 4-azophenylacetoacetic acid and piperazine dissolved in a toluene-butanol solvent is applied to a substrate and heated at 120 DEG C.; (4) an aqueous solution containing a copolymer of acrylamide, tert.-butyl acrylate and ethyl acrylate is mixed with the dye of (2), dimethylolurea and ammonium nitrate, applied to paper and heated at 150 DEG C.; (5) a mixture of a copolymer of acrylamide, N-methylolacrylamide and ethyl acrylate, the dye of (1), the di-N-methylolurethane of 1,4-butanediol and ammonium nitrate is dissolved in water, applied to wood pulp and dried at 150 DEG C.; (6) the dye obtained by coupling diazotized p-aminophenylglyoxaldiureine with 1-naphthol-4-sulphonic acid and reaction with formaldehyde, the dimethylolurethane of 1,4-butanediol and ammonium nitrate are added to an aqueous solution of a copolymer of acrylamide, methacrylamide, and methyl acrylate, the resulting composition is applied to paper and heated at 160-170 DEG C.; and (7) the coupling product of diazotized p-aminophenylurea and 4-tert.-butylphenol and reacted with formaldehyde, and hexamethylene diisocyanate are added to an ethanol solution of a copolymer of butylacrylate, butanediol monoacrylate and acrylamide, and the resulting solution is applied to glass fabric and heated at 160-170 DEG C. Specification 877,102 also is referred to. The Specification describes also the preparation of the copolymers of the above Examples by the following processes: (1) and (2) aqueous emulsion polymerization in the presence of potassium persulphate and the sulphation product of an oxyethylated fatty alcohol; (3) solution polymerization in a toluene-butanol mixture in the presence of benzoyl peroxide; (4) solution polymerization in butanol in the presence of azodiisobutyronitrile; (5) precipitation polymerization in butanol in the presence of benzoyl peroxide and sodium hydroxymethanesulphinate; (6) aqueous solution polymerization in the presence of potassium persulphate and sodium hydroxymethane-sulphinate; and (7) solution polymerization in ethanol in the presence of azodiisobutyronitrile.ALSO:Paper and wood are coated with a toluenebutanol solution of a copolymer of acrolein, butyl acrylate and styrene, 4-azophenylacetoacetic acid anilide as a dyestuff reactive with the copolymer, and piperazine as a cross-linking agent for the copolymer, and then heated at 120 DEG C. to produce transparent yellow coatings. Specifications 744,877, 779,781, 842,802, 850,977, 877,102, 900,764 and 946,471 are referred to.ALSO:Fabrics are coloured by impregnating them with a mixture comprising a polymer and a dyestuff reactive therewith, and, if the polymer is not self-cross-linking, a cross-linking agent therefor. Examples describe processes in which: (2) a non-woven fabric is impregnated with an aqueous composition comprising the coupling product of diazotized N-(p-aminophenyl)-glyoxaldiureine with 1-(p-sulphophenyl)-3-methylpyrazolone-(5) which has been reacted with formaldehyde, dimethylol urea and a dispersion of a copolymer of butyl acrylate and methacrylamide, followed by drying and heating the fabric at 150 DEG C.; and (7) glass fabric is impregnated with an ethanol solution of a copolymer of butyl acrylate, butanediol monoacrylate and acrylamide containing hexameltrylene diisocyanate and the coupling product of diazotized p-aminophenylurea and 4-tertbutylphenol reacted with formaldehyde, and the dried fabric is heated at 160-170 DEG C. Specifications 744, 877, 779, 781, 842, 802, 850, 977, 877, 102, 900, 764 and 946, 471 are referred to.