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    Production of polyurethane foams
    1.
    发明专利
    Production of polyurethane foams 未知

    公开(公告)号：GB1042478A

    公开(公告)日：1966-09-14

    申请号：GB2630963

    申请日：1963-07-03

    Applicant: BASF AG

    Inventor： DAUMILLER GUENTHER ,  WILHELM HANS ,  WEGNER EBERHARD

    IPC: C08G18/40 ,  C08G18/62

    Abstract: Polyurethane foams are prepared by reaction of polyisocyanates with hydroxyl-containing polyesters or polyethers, in the presence of water or a volatile organic blowing agent boiling between 0 DEG and 100 DEG C., together with at least one copolymer containing both tertiary nitrogen, and isocyanate-reactive groups (i.e. carboxylic, carboxylic amide, mercapto, thiolic, thionic, sulphydryl, primary or secondary basic amino, carbon bonded activated hydrogen, or preferably hydroxyl groups), the copolymer being obtained by polymerizing a ,b -ethylenically unsaturated monomers (i.e. compounds having a polymerizable double bond between the first two carbons of the unsubstituted end of the carbon chain). Suitable copolymers are polymerization products of either a monomer having one of the above-mentioned required groups with a second monomer having the other required group, or a monomer having both required groups with another a ,b -unsaturated monomer. Examples are given for preparation of such polymers from the following, using azodibutyronitrile as a catalyst in all cases: (1) isobutyl acrylate, 4-hydroxy butyl acrylate, tertiary dodecyl mercaptan, and N-vinyl imidazole; (2) isobutyl acrylate, 4-hydroxy butyl acrylate, tertiary dodecyl mercaptan, and N - vinyl - 2 - methylol imidazole; (3) butyl acrylate, 4-hydroxybutyl acrylate, tertiary dodecyl mercaptan, and dimethylamino styrene; (4) butyl acrylate, 4-hydroxy butyl acrylate, tertiary dodecyl mercaptan, butene-2 ol (1), and N vinyl imidazole; (5) butyl acrylate, 4 hydroxy butyl acrylate, tertiary dodecyl mercaptan, and N vinyl 2,4,5 trimethyl imidazole; (6) 2 ethyl hexyl acrylate, 4 hydroxy butyl acrylate, tertiary dodecyl mercaptan, butenol, and vinyl imidazole; (7) isobutyl acrylate, 2 hydroxy propyl methacrylate, tertiary dodecyl mercaptan, and 2 methyl 5 vinyl pyridine; (8) butyl acrylate, 2 hydroxy ethyl acrylate, butenol, and N vinyl benzimidazole (9) butyl acrylate, butene 2 ol (1), and 2; hydroxyethyl N vinyl imidazole; (10) butyl acrylate, 4 hydroxy butyl acrylate, vinyl propionate, butene 2 ol (1), and N vinyl 3,5 dimethyl pyrazole; (11) 2 ethyl hexyl acrylate, 4 hydroxy butyl acrylate, hexene (3) diol-2,5, styrene, and N-vinyl-2-methyl imidazole; (12) butyl acrylate, 2-hydroxy propyl acrylate, butene - 2 - ol - (1), vinylidene chloride, and N-vinyl imidazole; (13) isobutyl acrylate, butene-2-ol-(1), and di-(b -hydroxyethyl)-aminomethylene methacrylamide; (14) butyl acrylate, butanediol monoacrylate, secondary butenol, and N-vinyl imidazole. These co-polymers suitably comprise 5 to 25% of the isocyanate-reactive mixture, in which the remaining components are conventional polyesters or polyethers useful in polyurethane production. Optional additives to the condensation reaction mixture are, e.g., emulsifiers, foam stabilizers to regulate pore size, such as organopolysiloxanes, and catalysts, such as tin compounds and tertiary amines. The polyurethanes of the invention may be prepared by one-shot techniques, and the process obviates the use of toxic or odiferous tertiary amine catalysts, since the copolymers have corresponding catalytic activity and then become part of the final polymer mass by cross-linking.

    Water soluble binders
    5.
    发明专利
    Water soluble binders 未知

    公开(公告)号：GB929328A

    公开(公告)日：1963-06-19

    申请号：GB448762

    申请日：1962-02-06

    Applicant: BASF AG

    Inventor： WILHELM HANS ,  WEGNER EBERHARD ,  KOHL KARL ,  DEMMLER KURT

    IPC: C08L61/04 ,  C08L61/20 ,  C08L67/00 ,  C09D133/06 ,  C09D133/26 ,  C09D161/20 ,  C09J133/06 ,  C09J133/26

    Abstract: Water-soluble binders comprise (1) 40 to 90% by weight of a water-soluble copolymer and (2) 10 to 60% by weight of water-soluble phenoplasts and/or aminoplasts, said percentages relating to the total weight of (1) and (2), and said copolymer being a copolymer of (a) 35 to 64 parts by weight of acrylamide and/or methacrylamide, (b) 35 to 64 parts by weight of one or more esters of acrylic or methacrylic acid with saturated monohydric alcohols containing 1 to 20 carbon atoms, (c) 1 to 15 parts by weight of one or more monoesters of acrylic or methacrylic acid with saturated polyhydric alcohols, and optionally (d) 0,01 to 10 parts by weight of other copolymerizable monomers, the sum of the parts by weight of components (a) to (c) amounting to 100. Specified esters (b) are those of methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol and t. butanol. The ester (c) may be of ethanediol, propanediol-1,2, propanediol-1,3, butanediol-1,2, pentanediol-1,2, hexanediol-1,2, glycerol, 1,1,1-trimethylolpropane and pentaerythritol. The monomers (d) may be unsaturated carboxylic acids, or esters, nitriles, amides or salts thereof; vinyl esters; vinyl aromatic hydrocarbons; vinyl and vinylidene halides; vinyl lactams; vinyl amines; vinyl sulphamides and vinyl sulphones. The phenoplast may be a condensate of phenol or cresol with formaldehyde. The aminoplast may be a condensate of formaldehyde with urea, thiourea, melamine, ammeline, guanidine, dicyandiamide, glyoxalureides or ethylene urea. The binders may be dissolved in water, optionally with the addition of water-miscible organic solvents, e.g. alcohols, ethers or ketones; dyes and pigments; and levelling aids such as glycol ethers, acetals, glycols, dimethyl formamide, sulphones and sulphoxides. Examples describe the preparation of copolymers of (I) acrylamide, ethyl acrylate, t-butyl acrylate and butanediol-1,4-monoacrylate and (II) acrylamide, methacrylamide, ethyl acrylate, 2-ethylhexyl methacrylate and butanediol-1,4-monoacrylate by polymerization in n-butanol in the presence of benzoyl peroxide and sodium hydroxymethanesulphinate; and the formation of binders by dissolving these copolymers in aqueous solutions of phenolformaldehyde condensate and tetramethylolglyoxaldiureine. The compositions may be used for coating wood, metal and plastics; impregnating fabrics and paper; and laminating; and may be cured by heating, optionally in the presence of acid reacting substances such as carboxylic acids and ammonium nitrate or chloride.

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