Compositions for the production of moulded, impregnated, laminated and coated articles

    公开(公告)号:GB1073489A

    公开(公告)日:1967-06-28

    申请号:GB3974564

    申请日:1964-09-30

    Applicant: BASF AG

    Abstract: A composition comprises a copolymer containing N-hydroxymethyl groups in free or etherified form and an acid cure catalyst which is a mixture of one or more acids having a dissociation constant of more than 10-2 and one or more acids having a dissociation constant of 10-5 to 10-2. The amides are preferably acrylamide and methacrylamide and the etherifying alcohols are preferably C1-C8 alcohols, C2-C6 b -alkoxy ethanols or benzyl alcohol. The stronger acid may be perchloric acid, hydrogen bromide, hydrogen chloride, p-toluenesulphonic acid, or pyrophosphonic acid. The weaker acid may be formic or acetic acid. The exemplified polymer is a copolymer of the n-butyl ether of N - hydroxymethyl - methacrylamide, acrylic acid, butanediol monoacrylate, styrene and 2-ethylhexyl acrylate. The compositions are suitable for coating, moulding, impregnating and laminating and may contain solvents and pigments.ALSO:Steel sheet is sprayed with a solution comprising a copolymer containing N-methylol groups in free or etherified form and an acid cure catalyst which comprises a mixture of (1) an acid having a dissociation constant greater than 10-2 and (2) an acid having a dissociation constant between 10-5 and 10-2. Acids (1) are perchloric acid, hydrogen bromide, hydrogen chloride, p-toluenesulphonic acid, and pyrophosphoric acid. Acids (2) are formic or acetic acid. The exemplified polymer is a copolymer of the n-butyl ether of N-methylol methacrylamide, acrylic acid, butanediol monoacrylate, styrene and 2-ethylhexyl acrylate applied in a mixture of butanediol, toluene, xylene, and butanol. The catalyst system is a mixture of perchloric acid and acetic acid and the composition also contains titanium dioxide. The applied coating is heated to cross-link.

    SHEET-LIKE REINFORCED MATERIAL
    44.
    发明专利

    公开(公告)号:CA1270738A

    公开(公告)日:1990-06-26

    申请号:CA493840

    申请日:1985-10-25

    Applicant: BASF AG

    Abstract: Sheet-like reinforced materials consisting of A. a core layer comprising a sheet-Like textile structure, preferably a glass fiber mat, B. a plastic matrix composed of a nylon which has been polymerized under alkaline conditions and penetrates both the core layer and the surface layer or layers, are produced batchwise by the RIM method or continuously on a double-belt press by impregnating the sheet-line textile structure and the foam sheets with a lactam melt and polymerizing the latter. The reinforced material can be used for the production of finished articles having a satisfactory surface, for example for the automotive or aircraft industry.

    PROCESS FOR THE PREPARATION OF ELASTIC POLYURETHANE FLEXIBLE FOAMS USABLE IN COLD-MOLD TECHNIQUES TO PRODUCE MOLDED ARTICLES

    公开(公告)号:CA1270093A

    公开(公告)日:1990-06-05

    申请号:CA510519

    申请日:1986-05-30

    Applicant: BASF AG

    Abstract: PROCESS FOR THE PREPARATION OF ELASTIC POLYURETHANE FLEXIBLE FOAMS USABLE IN COLD-MOLD TECHNIOUES TO PRODUCE MOLDED ARTICLES The invention is a process for the preparation of elastic polyurethane flexible foams having densities from approximately 25 to 60 kg/m3, and producing molded articles in closed molds at temperatures from 25 to 80.degree.C, comprising reacting A) an organic polyisocyanate prepolymer having an isocyanate content from 6 to 20 percent by weight prepared by reacting a toluene diisocyanate and/or a diphenylmethane diisocyanate with a di- to tetrafunctional polyether polyol having a hydroxyl number from 20 to 50 and oxyethylene terminal group content of at least 10 to 30 percent by weight B) a mixture of compounds containing reactive hydrogen atoms, comprising a mixture of a) from 55 to 89.5 parts by weight of at least one dito tetrafunctional polyether polyol having a hydroxyl number of from 20 to 80 and less than 10 percent by weight terminal oxyethylene groups, b) from 0.5 to 20 parts by weight of at least one alkanolamine, and c) from 10 to 25 parts by weight water, in the presence of C) a blowing agent, D) a catalyst, and optionally E) auxiliaries and/or additives.

    PROCESS FOR THE PREPARATION OF POLYESTER- OR POLYETHER-POLYESTER POLYOL

    公开(公告)号:CA1255325A

    公开(公告)日:1989-06-06

    申请号:CA452231

    申请日:1984-04-17

    Applicant: BASF AG

    Abstract: PROCESS FOR THE PREPARTION OF POLYESTER- OR POLYETHER-POLYESTER POLYOL In order to prepare polyester or polyetherpolyester polyols, polyols, preferably di- to hexafunctional polyether polyols having hydroxyl numbers from 15 to 250 are esterified with at least one carboxylic acid anhydride, preferably phthalic acid anhydride, in the presence of Nmethylimidazole, triethylenediamine, and/or triphenylphosphine as catalysts to form a carboxylic acid half-ester, and said half-ester is then oxyalkylated with at least one alkylene oxide, preferably ethylene oxide, in the presence of N-methylimidazole, triethylenediamine, triphenylphosphine, thiodialkylene glycol, employing a mixture of at least two of the compounds cited as catalysts.

    S-TRIAZINE-RADICAL-CONTAINING POLYETHER POLYOL MIXTURES, PROCESS FOR THEIR PREPARATION AND THEIR USE

    公开(公告)号:CA1250289A

    公开(公告)日:1989-02-21

    申请号:CA477958

    申请日:1985-03-29

    Applicant: BASF AG

    Abstract: S-TRIAZINE-RADICAL-CONTAINING POLYETHER POLYOL MIXTURES, PROCESS FOR THEIR PREPARATION AND THEIR USE The invention relates to s-triazine radicalcontaining polyether polyol mixtures having functionalities of from 2 to 6 and hydroxyl numbers of from 210 to 640, prepared by the oxyalkylation of a mixture of one or more polyamino-1,3,5-triazines, preferably melamine, and an alkanol having a hydroxyl functionality of from 2 to 6 and having 2 to 18 carbon atoms, water, or their mixtures in the absence of catalysts and conventional inert polar solvents. The resulting polyether polyol mixtures are suitable for the preparation of rigid polyurethane, polyisocyanurate, and urethane group-containing polyisocyanuate foams produced by means of the polyisocyanate polyaddition process.

    PROCESS FOR THE PREPARATION OF FLEXIBLE POLYURETHANE FOAMS INVOLVING THE USE OF AROMATIC MONOAMINES

    公开(公告)号:CA1164149A

    公开(公告)日:1984-03-20

    申请号:CA379129

    申请日:1981-06-05

    Applicant: BASF AG

    Abstract: PROCESS FOR THE PREPARTIAON OF FLEXIBLE POLYURETHANE FOAMS INVOLVING THE USE OF AROMATIC MONOAMINES The invention relates a process for the preparation of a polyurethane foam by reacting an organic polyisocyanate, polyol, and primary or secondary aromatic monoamine in the presence of a blowing agent and catalyst. The amines are used in quantities of 0.1 part to 4 parts by weight per 100 parts per weight of polyol. The highly elastic polyurethane flexible foams are suited for the manufacture of upholstered furniture, matresses, automobile seats and head supports, as well as particularly for molded foams. The semi-rigid polyurethane foams are used as foam backing of dashboards in automobiles, thermal and sound insulation in buildings and vehicles, and for impact absorption in packaging materials.

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