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    2.
    发明专利
    未知

    公开(公告)号：AT256477B

    公开(公告)日：1967-08-25

    申请号：AT754963

    申请日：1963-09-19

    Applicant: BASF AG

    Inventor： BAYERLEIN FRIEDRICH DR ,  WILHELM HANS DR

    IPC: C08G69/18 ,  C08J9/00

    Abstract: Expanded polyamides are produced by heating a mixture of (A) one or more lactams having seven to fourteen ring members, (B) one or more alkaline catalysts, (C) one or more activators and (D) agents which under the prevailing conditions of polymerization volatilize or decompose with the evolution of gas thereby causing the polymerization product to expand, in the absence of substances containing or forming hydroxyl groups to temperatures above the melting point of the lactam and not more than 200 DEG C. and polymerizing the melt with expansion in the presence of 0.05 to 5% by weight of calcined gypsum with reference to the total weight of the polyamide forming materials. Lactams which are suitable are those of omega-aminocarboxylic acids such as caprolactam, oenantholactam, capryllactam, caprilactam and laurolactam. C-substituted lactams, e.g. 4-isopropylcaprolactam and lactams having chain-branching or cross-linking effects, e.g. alkylene-bis lactams may also be used. Suitable alkaline catalysts are metals such as sodium, potassium and calcium or compounds of these metals such as potassamide, sodium alcoholates and sodium hydroxide, organometallic compounds and especially alkali lactamates. Specified activators are acyl-lactams, monoisocyanates, polyisocyanates, acid derivatives such as carboxylic acid halides, esters or anhydrides, but particularly substituted ureas, thioureas, guanidines and urethanes. Examples of these are hexamethylene-1,6-biscarbamidocapryllactam or phenylcarbamidocaprolactam. Suitable expanding agents are aliphatic and cycloaliphatic hydrocarbons such as hexane, octane and cyclohexane, aromatic hydrocarbons such as benzene and toluene and straight-chain and cyclic ethers such as dibutyl ether and dioxane. Liquids having low boiling points, e.g. pentane may be used under pressure. Solid compounds, such as azoisobutyronitrile, benzene sulphonic acid hydrazide and arylsulphazides may also be used. Dyes, fillers and stabilizers may also be incorporated in the mixture.

    3.
    发明专利
    未知

    公开(公告)号：AT256459B

    公开(公告)日：1967-08-25

    申请号：AT1030063

    申请日：1963-12-20

    Applicant: BASF AG

    Inventor： BAYERLEIN FRIEDRICH DR ,  KELLER RUDOLF ING ,  MAHLING DIETER DR ,  BECKER PETER ING ,  GAJEK CONRAD DR ,  WILHELM HANS DR

    IPC: C08K5/16 ,  C08K5/20 ,  C08K5/205

    Abstract: A moulding material comprises a thermoplastic polymer of ethylenically unsaturated compounds and a compound of formula R-NH-COOR1 where R and R1 are C1- 20 aliphatic or unsubstituted or substituted C6- 20 aromatic groups. The polymer may be a copolymer of ethylene and vinyl acetate, ethyl acrylate or acrylonitrile, or polyethylene. The compound may be hexamethylene - 1,6 - bis - (alkyl or cycloalkylurethane), phenyl - stearyl - urethane, toluene-2,4 - bis - (n - octylurethane) or triphenylmethane - 4,41,411 - trioctylurethane and may be present in an amount of 0.01-2%. The moulding material may be mixed on rollers, on a calender or in an extruder, and may be granulated and then processed into a sheet. The composition may contain methanol as a solvent for the urethane.

    6.
    发明专利
    未知

    公开(公告)号：NL144638B

    公开(公告)日：1975-01-15

    申请号：NL297998

    申请日：1963-09-17

    Applicant: BASF AG

    Inventor： BAYERLEIN FRIEDRICH DR ,  WILHELM HANS DR

    IPC: C08G69/18 ,  C08J9/00 ,  C08J9/04 ,  C08G69/16 ,  C08K3/30

    Abstract: Expanded polyamides are produced by heating a mixture of (A) one or more lactams having seven to fourteen ring members, (B) one or more alkaline catalysts, (C) one or more activators and (D) agents which under the prevailing conditions of polymerization volatilize or decompose with the evolution of gas thereby causing the polymerization product to expand, in the absence of substances containing or forming hydroxyl groups to temperatures above the melting point of the lactam and not more than 200 DEG C. and polymerizing the melt with expansion in the presence of 0.05 to 5% by weight of calcined gypsum with reference to the total weight of the polyamide forming materials. Lactams which are suitable are those of omega-aminocarboxylic acids such as caprolactam, oenantholactam, capryllactam, caprilactam and laurolactam. C-substituted lactams, e.g. 4-isopropylcaprolactam and lactams having chain-branching or cross-linking effects, e.g. alkylene-bis lactams may also be used. Suitable alkaline catalysts are metals such as sodium, potassium and calcium or compounds of these metals such as potassamide, sodium alcoholates and sodium hydroxide, organometallic compounds and especially alkali lactamates. Specified activators are acyl-lactams, monoisocyanates, polyisocyanates, acid derivatives such as carboxylic acid halides, esters or anhydrides, but particularly substituted ureas, thioureas, guanidines and urethanes. Examples of these are hexamethylene-1,6-biscarbamidocapryllactam or phenylcarbamidocaprolactam. Suitable expanding agents are aliphatic and cycloaliphatic hydrocarbons such as hexane, octane and cyclohexane, aromatic hydrocarbons such as benzene and toluene and straight-chain and cyclic ethers such as dibutyl ether and dioxane. Liquids having low boiling points, e.g. pentane may be used under pressure. Solid compounds, such as azoisobutyronitrile, benzene sulphonic acid hydrazide and arylsulphazides may also be used. Dyes, fillers and stabilizers may also be incorporated in the mixture.

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