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    Production of moldings from polyurethane elastomers
    11.
    发明专利
    Production of moldings from polyurethane elastomers 未知

    公开(公告)号：GB1124079A

    公开(公告)日：1968-08-21

    申请号：GB5426765

    申请日：1965-12-22

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  WILHELM HANS ,  DOERFEL HELMUT

    IPC: C08G18/10 ,  C08G18/42

    Abstract: Mouldings are prepared from elastomers containing urethane groups and/or urea and/or semicarbazide groups. The elastomers are prepared by reacting a polyester having at least two hydroxyl groups prepared from adipic acid and a mixture of 45-90% by wt. 1,6-hexanediol and 10-55% by wt. 2,2-dimethyl, 1,3-hexanediol, first with a polyisocyanate and then with a chain extender. The process may be carried out in the presence of an unreactive polar solvent. Up to 10% by wt. of the adipic acid may be replaced by other dicarboxylic acids, e.g. sebacic, pimelic, suberic or isophthalic acids.

    Process for the production of highly elastic polyurethane articles
    13.
    发明专利
    Process for the production of highly elastic polyurethane articles 未知

    公开(公告)号：GB1079708A

    公开(公告)日：1967-08-16

    申请号：GB4933664

    申请日：1964-12-04

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  GEHM ROBERT ,  WEISSAUER HERMANN ,  WELLENREUTHER GERHARD

    IPC: C08G18/10

    Abstract: Highly elastic polyurethane articles are made by reacting, in an inert polar solvent, substantially linear isocyanate modified polyhydroxy compounds of M.W. from about 750 to 6000 and having terminal -NCO groups with dihydrazino compounds of cyclic diazines containing at least two reactive hydrogen atoms and moulding or applying to a substrate while removing the solvent. Hydrazino compounds specified are:-2,4-dihydrazino-6-methyl-m-diazine; 2, 4 - dihydrazino - 5, 6 - tetramethylene-m-diazine; 2,4 - dihydrazino - 6 - benzyl - m-diazine; 2, 4 - dihydrazino - 5 - methyl - 6-phenyl - m - diazine; 2, 4 - dihydrazinoquinazoline; 2, 3 - dihydrazinoquinoxaline and 1, 4-dihydrazinophthalazine. The polar solvent may be dimethyl formamide, dimethyl acetamide, tetramethylenesulphone or tetramethyl urea.

    Production of polylaurolactam
    16.
    发明专利
    Production of polylaurolactam 未知

    公开(公告)号：GB1073639A

    公开(公告)日：1967-06-28

    申请号：GB4169564

    申请日：1964-10-13

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  WILHELM HANS ,  MERTES FRIEDRICH ,  SCHWARTZ ERICH

    IPC: C08G69/16

    Abstract: Laurolactam is polymerized by heat in the presence of (a) an oxyacid of phosphorus or a derivative thereof and (b) a mono- or dicarboxylic acid. Oxyacids and their derivatives specified ar phosphorous, phosphoric and hypophosphorous acids and their alkali metal and alkaline earth metal salts, anhydrides, C1- 5 alkyl esters, e.g. tri-methyl, ehthyl, propyl, butyl and pentyl, and halides, e.g. PCl3, PCl3 and PCl5 and polyacids derived therefrom. 0.001-3 mole per cent may be used. Carboxylic acids specified are: caproic, caprylic, capric, lauric, stearic, adipic, sebacic and mixtures thereof. 0.01-5 mole per cent may be used. The reaction may b continuous or batchwise at above 270 DEG C. and 1-25 atmospheres pressure. 5-50 mole per cent of water may be present and an inert atmosphere, e.g. N2, may be used. The product may be made into gears, bushes, screws, sheeting, coating powders, bristles, threads and filaments.

    Improving the resistance to gas-fume fading of shaped articles of polyurethanes
    17.
    发明专利
    Improving the resistance to gas-fume fading of shaped articles of polyurethanes 未知

    公开(公告)号：GB1028806A

    公开(公告)日：1966-05-11

    申请号：GB310864

    申请日：1964-01-24

    Applicant: BASF AG

    Inventor： FEDERKIEL WILHELM ,  GEHM ROBERT ,  KUNDE JOACHIM ,  MAIER KARL

    IPC: C08K5/00 ,  D06M13/322 ,  D06M13/342 ,  D06M13/345 ,  D06M13/425

    Abstract: Polyurethanes of M.W. at least 104 and having no isocyanate groups are mixed before, during or after shaping with at least 0.1% of an organic amine which contains not only one or more amino groups but also at least one nitrilo, carbamic ester, thio-carbamic -O-ester, carboxylic ester, carbonyl, carboxylic amide, ether or thioether group and/or at least one cycloaliphatic radical having at least 3C to improve resistance to gas-fume fading. The amine may have the general formula in which X denotes a hydrogen atom or a low M.W. alkyl group, a group of formula -CH2-SO2M or a methylene group whose second valence is attached to the ring atom bearing the nitrogen, Y denotes a hydrogen atom, a low M.W. alkyl group or one of the groups of the formula where A denotes a methylene group, 1, 2-propylene group, or ethylene group, Z denotes a methylene group or ethylene group and M denotes a hydrogen atom or an alkali metal ion or ammonium ion. Many suitable amines are specified. In examples: (1) a polyurethane cloth derived from 1,6-hexane diisocyanate and 1,4-butane diisocyanate was immersed in a liquor containing water and the formaldehyde-bisulphite compound of the reaction product of 4,41-diaminodicyclohexylmetnane and acrylonitrile, (2) a skein of polyurethane derived from 1 : 4-butane diisocyanate and 1 : 4-butane diol was immersed in a liquor containing water and 4,41 - diaminodicyclohexyl methane, (3) spirocyclohexylenaminopropionitrile - (1 - b - cyanoethyl - 2,2 - pentamethylene - ethyleneimine) was added to a molten polyurethane prior to spinning. In other examples, the amines used were: (4) the carbamic ester derived from 2 moles of phenylisocyanate and 1 mole of N-propyldiethanolamine, (5) the carbamic ester obtained from 1 mole of hexamethylene diisocyanate and 2 moles of N-dimethylisopropanolamine, (6) the formaldehyde-bisulphite compound of (12) as in Example (1); (13) a mixture of compounds of formulae ALSO:Polyurethanes of MW at least 104 and containing no isocyanate groups are mixed before, during or after shaping with at least 0.1% of an organic amine which contains not only one or more amino groups but also at least one nitrilo, carbamic ester, thio-carbamic-0-ester, carboxylic ester, carbonyl, carboxylic amide, ether or thioether and/or at least one cycloaliphatic radical having at least 3C to improve resistance to gas fume fading. In a typical Example (1) a cloth of polyurethane derived from 1,6 hexane diisocyanate and 1,4 butane diol was immersed in a liquor consisting of water and the formaldehyde bisulphite compound of the reaction product of 4,41 diaminodicyclohexyl methane and acrylonitrile, rinsed and dried. In Example (2) a skein of polyurethane was immersed in a liquor consisting of water and 4,41 diaminodicyclohexylmethane.

    Production of highly elastic mouldings of polyurethanes
    20.
    发明专利
    Production of highly elastic mouldings of polyurethanes 未知

    公开(公告)号：GB1102352A

    公开(公告)日：1968-02-07

    申请号：GB2386865

    申请日：1965-06-04

    Applicant: BASF AG

    Inventor： GEHM ROBERT ,  KUNDE JOACHIM ,  MERTES FRIEDRICH

    IPC: C08G18/10

    Abstract: Moulded polyurethane elastomers are prepared by reacting in solution an isocyanate modified polyhydroxy compound of MW 1000-6000 and containing terminal -NCO groups with a chain lengthening agent of Formula (I) in which R, R1 and R2 can each be a hydrogen atom or an alkyl, cycloalkyl, aryl or aralkyl radical having up to 8C, R3 is a divalent linear or branched aliphatic, aromatic or araliphatic hydrocarbon radical having up to 10C in a continuous chain which may be interrupted by hetero atoms; R4 is the radical where A is a hydrogen atom, an alkyl, cycloalkyl, aryl or aralkyl radical and B is an organic radical containing at least one sulphone group and which may be connected with A, and n is 0 or 1; and shaping whilst removing the solvent e.g. by casting on to a plate. The polyhydroxy compound may be a polyether, polythioether, polyesteramide or polyacetal. The isocyanate may be aliphatic, cycloaliphatic or aromatic. The solvent may be a polar organic solvent e.g. dimethyformamide, dimethyl acetamide, tetramethyl urea or tetramethylene sulphone.ALSO:In Example (1) 2,4-dihydrazino-6-[N-ethyl-N-thiacyclopentyl - 1,1 - dioxide - amino - s - triazine] is prepared by reacting cyanuryl chloride with ethylene thiacyclopentane 1,1-dioxide amine and adding hydrazine hydrate. The product is recrystallized from a 1:1 mixture of dimethyl formamide and water. In Example (2) 2,4 - dihydrazino - 6 - [tetrahydro - 1,4 - thiazino-1,1 - dioxide] - s - triazine is prepared by reacting cyanuryl chloride with tetrahydro-1,4-thiazine -1,1-dioxide and adding hydrazine, followed by recrystallization from dimethyl formamide/water mixture.

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