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    Production of basic polyamides
    31.
    发明专利
    Production of basic polyamides 未知

    公开(公告)号：GB1027211A

    公开(公告)日：1966-04-27

    申请号：GB759363

    申请日：1963-02-26

    Applicant: BASF AG

    Inventor： BAYERLEIN FRIEDRICH ,  DACHS KARL ,  HARTMANN JOB-WERNER ,  LISSNER OSKAR ,  STEDEN FRANZ ,  WILHELM HANS

    IPC: C08G69/26 ,  C08L63/00 ,  C08L77/00

    Abstract: A process for the production of basic polyamides compatible with substances capable of being cured to plastics comprises reacting at a temperature of between 100 DEG and 350 DEG C., an o : o 1-octane and/or -nonane dicarboxylic acid which contains as a substituent an aliphatic hydrocarbon radical having at least 8 carbon atoms in a continuous chain with a mixture of (a) an aliphatic polyamine, and (b) an aromatic and/or araliphatic polyamine, said polyamines having at least two primary amino groups in a molar ratio of carboxylic acid to amine of 1 : 1.1 to 1:3. Mono- and other di-carboxylic acids, e.g. acetic, benzoic, stearic, adipic, glutaric, sebacic, a -methyl-glutaric, sebacic, isophthalic and terephthalic acid may be present in the reaction mixture. Specified polyamines are ethylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, decamethylene xylylene and o-, m- and p-phenylene diamine, 1 - amino - 9 - aminomethyloctadecane, 1-amino - 10 - aminomethyloctadecane, diaminocyclohexane, di-(aminomethyl) benzenes, 4 : 41-diamino - di - n - butyl ether, a - aminopyridine, polyamines of the formula H2N-(CH2)m-[NH-(CH2) m]n-NH2 where m is an integer from 2 to 6 and n is an integer from 1 to 4, diethylene triamine, triethylene tetramine, dipropylene triamine and tripropylene tetramine. Monoamines, e.g. ethylamine, stearylamine or aniline may also be present in the reaction mixtures. The products of the invention may be used for curing polyepoxides or precondensed phenol, urea or melamine-aldehyde resins.

    Tyre-cord filaments from base-polymerised lactams
    32.
    发明专利
    Tyre-cord filaments from base-polymerised lactams 未知

    公开(公告)号：GB969989A

    公开(公告)日：1964-09-16

    申请号：GB2774362

    申请日：1962-07-19

    Applicant: BASF AG

    Inventor： STEINHOFER ADOLF ,  BECHT GUENTER ,  DACHS KARL ,  WILHELM HANS

    IPC: B60C9/00 ,  C08G69/18 ,  D01F6/60

    Abstract: Heat-resistant tyre-cord filaments are made by melt spinning base-polymerized lactams from which monomers, oligomers and water-soluble alkaline catalysts may have been solvent-extracted with water or methanol. Alternatively the spinning of the polymerized lactam may follow immediately after its having been polymerized. Suitable lactams comprise all lactams of o -aminocarboxylic acids with rings of more than six members which can be converted into polyamides by means of alkaline reaction initiators, e.g. caprolactam, o-nantholactam, caprylolactam, o -aminopelargonolactam, o -aminocaproyllactam, o -aminoundecanolactam or laurolactam. The bases used for the initiation and continuation of the polymerization may be alkali metals, alkali metal carbonates, alkali metal amides or alkali metal lactams. In an example, a caprolactam containing 0.4% of sodium and a caprolactam containing 3% of pyrrolidone-n-carboxylic acid anilide are fed at the same rate at 100 DEG C. to an extruder heated in zones from 140 to 270 DEG C,, mixed, polymerized and melt spun. The filaments thus obtained have a Fikentscher K-value of 74 and contain 9.6% of water-extractable components. They may be cold or hot drawn either before or after the extraction of the water-soluble components. In the other example 1,500 parts of caprolactam containing 17 parts of potassium and 3,414 parts of caprolactam containing 76 parts of bis-caprolactam-n-carboxylic acid hexamethylene-diamine-1.6 are mixed and polymerized to form a polycaprolactam having a K-value of 127 and a melting range of 215-220 DEG C. The polymer is found to soften less with increase in temperature up to 190 DEG C. than nylon 6.6 having a melting range of 250-255 DEG C. Specification 919,246 is referred to.

    Process for the production of multilayer moulded articles having an outer layer of polyamide
    34.
    发明专利
    Process for the production of multilayer moulded articles having an outer layer of polyamide 未知

    公开(公告)号：GB924462A

    公开(公告)日：1963-04-24

    申请号：GB3210961

    申请日：1961-09-07

    Applicant: BASF AG

    Inventor： BRUEGGEMANN HORST ,  DACHS KARL ,  SCHWARTZ ERICH

    IPC: B05D1/18 ,  B05D7/14 ,  B32B27/00 ,  C08G69/18

    Abstract: A process for the production of coated articles having an outer layer of polyamide by polymerization of lactams with an alkaline polymerization initiator and a polymerization activator comprises surrounding a shaped article composed of a material which is dimensionally stable at temperatures up to at least 300 DEG C. with a melt of one or more lactams with six to twelve carbon atoms containing an alkaline polymerization initiator and a substituted urea, thiourea or urethane as activator, and polymerizing the lactam. Specified lactams are S -caprolactam, oenanthic lactum, caprylic lactam, lauric lactam, 4-isopropyl-S -caprolactam and 3- methyl-S -caprolactam. Specified initiators are alkali and alkaline earth metals and the oxides, hydrooxides, hydrides, carbonates, alcoholates and lactam salts thereof. Suitable polymerization activators are disclosed in Specifications 900,150 and 900,151. Cross-linking agents e.g. methylene-bis-caprolactam and fillers e.g. metal powder or graphite may be incorporated in the melt. Specified core materials are iron, brass, aluminium and ceramics. In the examples-(1) a shaped article preheated to 150 DEG C. is dipped into (a) a melt of caprylic lactam and sodium methylate and (b) a melt of caprylic lactam and bis-(caprylic lactam-N-carboxylic acid)-hexamethylene diamide-1:6 and suspended in a heating oven to complete polymerization and (2) sheet iron is preheated to 150 DEG C., dipped into a melt of S -caprolactam, caprylic lactam, potassium and bis-(caprolactam-N-carboxylic acid) hexamethylene diamide -1:6 and the lactams polymerized at 180 DEG C.ALSO:A process for the production of coated articles having an outer layer of polyamide by polymerization of lactams with an alkaline polymerization initiator and a polymerization activator comprises surrounding a shaped article composed of a material which is dimensionally stable at temperatures up to at least 300 DEG C. with a melt of one or more lactams with six to twelve carbon atoms containing an alkaline polymerization initiator and a substituted urea, thiourea or urethane as activator, and polymerizing the lactam. Specified lactams are e -caprolactam, oenanthic lactam, caprylic lactam, lauric lactam, 4-isopropyl-e -caprolactam and 3-methyl-e -caprolactam. Specified initiators are alkali and alkaline earth metals and the oxides, hydroxides, hydrides, carbonates, alcoholates and lactam salts thereof. Suitable polymerization activators are disclosed in Specifications 900,150 and 900,151. Cross-linking agents, e.g. methylene-bis-caprolactam and fillers, e.g. metal powder or graphite may be incorporated in the lactam melt. Specified core materials are iron, brass, aluminium and ceramics. In the examples:- (1) a shaped article preheated to 150 DEG C. is dipped into (a) a melt of caprylic lactam and sodium methylate and (b) caprylic lactam and bis-(caprylic lactam-N-carboxylic acid)-hexamethylene diamide-1:6 and suspended in a heating oven to complete polymerization and (2) sheet iron is preheated to 150 DEG C., dipped into a melt of e -caprolactam, caprylic lactam, potassium and bis-(caprolactam-N-carboxylic acid)-hexamethylene diamide-1:6 and the lactams polymerized at 180 DEG C.

    35.
    发明专利
    未知

    公开(公告)号：FR1262436A

    公开(公告)日：1961-05-26

    申请号：FR833021

    申请日：1960-07-15

    Applicant: BASF AG

    Inventor： DACHS KARL ,  BRUEGGEMANN HORST ,  BOECK EDMUND

    IPC: C08G69/20

    Abstract: A process for the polymerization of lactams having from 4 to 12 ring carbon atoms in the presence of an alkaline reaction initiator and a polymerization activator comprises using as the polymerization activator a substituted urethane which is capable of being dissolved undecomposed in the lactam at the polymerization temperature, having the general formula where R1, R2 and R3 represent a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, which may be substituted by fluorine or ether groups, or in which R1 and R2 together represent a divalent acryl radical of the general formula -CH2-(CH2)n-CO where n is an integer from 3 to 11, X is oxygen, sulphur or > N-R4 wherein R4 is hydrogen or a monovalent hydrocarbon radical as defined above, or in which R1 has the meanings defined above and R2 and/or R3 represent the radicals where Y is a divalent and X a trivalent hydrocarbon radical with from 1 to 20 carbon atoms, which may be substituted by fluorine or ether groups, and X, R1, R2 and R3 are as defined above. Specified lactams are pyrrolidone, piperidone, caprolactam, oenanthic lactam, caprylic lactam and lauric lactam. Many activators are specified. In the examples:- (1) caprylic lactam is polymerized in the presence of 1,6-hexamethylene-N,N1-bis-ethylurethane and a caprylic lactam-potassium hydroxide reaction product; (2) caprolactam is polymerized in the presence of potassium and 1-methyl-phenylene-2,4-bis-N,N1-benzylurethane and (3) caprylic lactam is polymerized in the presence of potassium and p,p1-phenylene-bis-N,N1-phenylurethane.

    MANUFACTURE OF AQUEOUS EMULSIONS OF ORGANIC SILICON COMPOUNDS
    37.
    发明专利
    MANUFACTURE OF AQUEOUS EMULSIONS OF ORGANIC SILICON COMPOUNDS 未知

    公开(公告)号：CA984538A

    公开(公告)日：1976-02-24

    申请号：CA148044

    申请日：1972-07-25

    Applicant: BASF AG

    Inventor： DACHS KARL ,  BERGOLD WOLFRAM ,  FAULHABER GERHARD ,  SCHWINDT WOLFGANG

    IPC: C08L83/04 ,  C09K23/00 ,  D06M13/507 ,  D06M13/513 ,  D06M15/643

    Abstract: 1389862 Emulsions of silicon compounds BADISCHE ANILIN-& SODA-FABRIK AG 28 July 1972 [29 July 1971] 35329/72 Heading B1V [Also in Divisions C3 and Dl] Stable aqueous emulsions of organic silicon compounds are prepared by mechanically emulsifying a mixture of 2-70 wt% of an organic silicon compound with 98-30 wt% of water, in the presence of 0.1-2 wt% (based on the mixture) of a copolymer derived from 5-50 mole% of maleic anhydride, 50-95 mole % of a non-saponifiable monomer and optionally 0.5-7 mol% of a polyamine, and optionally adjusting the pH to at least 7.5. There may also be present conventional emulsifying agents, e.g. polyoxyalkylated alkylphenols and a hydrocarbon solvent for the copolymer. In Examples a trimethylsilyl-terminated polydimethylsiloxane of 5000 cS/25‹C or tetrastearyl or tetraoleyl silicate is emulsified with water in the presence of copolymers of maleic anhydride and vinyl isobutyl ether, in 50:50, 30:88 and 25:71 molar ratio, neutralized with 0, 2 or 5 molar % of hexamethylene diamine, the emulsion also optionally containing a polyoxyethylated castor oil or nonylphenol or a methylated trimethylolmelamine, and being adjusted in pH with aqueous ammonia or triethanolamine.

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