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    Improvements in the bonding of polyamides to rubber
    1.
    发明专利
    Improvements in the bonding of polyamides to rubber 未知

    公开(公告)号：GB843377A

    公开(公告)日：1960-08-04

    申请号：GB1779258

    申请日：1958-06-04

    Applicant: BASF AG

    Inventor： CANTZLER ERIKA ,  DANIEL WALTER ,  GEHM ROBERT ,  HOELSCHER FRIEDRICH ,  RIEDER FRITZ ,  SCHUSTER CURT

    IPC: C08J5/06

    Abstract: An adhesive for bonding polyamides to rubber comprises a mixture of 80 to 40% (all percentages by weight) of a 10 to 20% aqueous solution of a resorcinol-formaldehyde condensate at a molar ratio of formaldehyde to resorcinol of from 1:2 to 2:1 and p 20 to 60% of a 20 to 60% aqueous dispersion of a copolymer derived from 30 to 70% butadiene, 67 to 20% styrene and 3 to 10% of a N-vinyl-imidazole (including substituted derivatives) or a N-vinylcarbazole (including substituted derivatives). For use with a polyamide fabric, the fabric may be soaked or impregnated with the adhesive mixture, allowed to dry and then pressed on to the rubber at 150 DEG C. with a pressure of about 20 kg/cm2. If foils of polyamides are used, they are preferably pre-treated with an aqueous solution of a resorcinol-formaldehyde condensate. Example (1) describes a conventional preparation of a butadiene-styrene-N vinylimidazole copolymer and also the preparation of a suitable resorcinol-formaldehyde condensate. A finely meshed fabric of polyamide fibres is bonded with a mixture of these two components on to an unvulcanised natural rubber. In another example N-vinyl-benzimidazole replaces N-vinylimidazole.

    Dyeing textiles with vat or sulphur dyestuffs
    2.
    发明专利
    Dyeing textiles with vat or sulphur dyestuffs 未知

    公开(公告)号：GB834393A

    公开(公告)日：1960-05-04

    申请号：GB2197958

    申请日：1958-07-09

    Applicant: BASF AG

    Inventor： HARTMARK BJARNE ,  SCHUSTER CURT ,  HERRLE KARL

    IPC: C07D207/26 ,  C07D207/27 ,  D06P1/22 ,  D06P1/642

    Abstract: Compounds used as levelling agents in dyeing (see Group IV (c)) and having a plurality of the same or different lactam groups, viz. butyro-, valero- or capro-lactam groups, and wherein each pair of lactam groups is connected through their nitrogen atoms by a carbon chain interrupted by one or more hetero atoms, viz. nitrogen, oxygen or sulphur atoms, the number of carbon atoms in the chain between a lactam nitrogen atom and the adjacent hetero atom being 2-6, are obtained by reacting dichlordiethyl ether or sym-dichlordiethylthioether or tri-(chlorethyl)-amine with the appropriate lactams, or by reacting polyalkylene polyamines with the appropriate lactones or by reacting sodium sulphide with a lactam substituted on the nitrogen atom by a b -chlorethyl group or by reacting di-(7-aminopropyl)-ether with the appropriate lactone. Compounds containing more than two lactam groups may also be obtained by cyanoethylating all the nitrogen atoms of a polyalkylene polyamine, then hydrogenating the product to form the corresponding polyamine and finally reacting with the lactones. The carbon atoms of the lactam group may be substituted by alkyl groups and in the case of a nitrogen hetero atom in the chain, its third linkage may bear an aliphatic chain of 1-5 carbon atoms which may be further substituted by hydroxyl, ether, nitrile, amino or lactam radicals.ALSO:In the dyeing of textile materials with vat or sulphur dyestuffs level dyeings are obtained by using, as a levelling agent, a compound having a plurality of the same or different lactam groups, viz:-butyro-, valero- or caprolactam groups, each pair of lactam groups being connected through their nitrogen atoms by a carbon chain interrupted by one or more hetero atoms, viz:-nitrogen, oxygen or sulphur atoms, and the number of carbon atoms in the chain between a lactam nitrogen atom and the adjacent hetero atom being 2-6. The carbon atoms of the lactam group may be substituted by alkyl groups and in the case of a nitrogen hetero atom in the chain its third linkage may bear an aliphatic chain of 1-5 carbon atoms which may be further substituted by hydroxyl, ether, nitrile, amino or lactam radicals. Numerous levelling agents are specified and numerous examples of dyeing are given.

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