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    Improvements in the purification of crude terephthalic acid
    44.
    发明专利
    Improvements in the purification of crude terephthalic acid 未知

    公开(公告)号：GB849189A

    公开(公告)日：1960-09-21

    申请号：GB1010959

    申请日：1959-03-24

    Applicant: BASF AG

    Inventor： BILLE HEINZ ,  EBEL FRIEDRICH ,  TRIESCHMANN HANS-GEORG ,  WEIDINGER HANS

    Abstract: Crude terephthalic acid is purified by recrystallisation from a N-alkyl-pyrrolidone. The process is particularly suitable for the purification of terephthalic acid obtained by oxidation, e.g., with nitric acid, of dialkyl benzenes, e.g., xylene and p-diisopropyl benzene or dialkyl benzenes halogenated in the side chains. Examples are furnished in which terephthalic acid containing nitrogenous impurities obtained by nitric acid oxidation of p-diisopropyl benzene are recrystallised from N-methyl and N-butyl-pyrrolidones. Other pyrrolidones specified include N-ethyl and N-propyl pyrrolidones.

    New hexahydropyrimidone derivatives and a method of finishing textile material
    50.
    发明专利
    New hexahydropyrimidone derivatives and a method of finishing textile material 未知

    公开(公告)号：GB1092497A

    公开(公告)日：1967-11-29

    申请号：GB3491866

    申请日：1966-08-04

    Applicant: BASF AG

    Inventor： PERTERSEN HARRO ,  BILLE HEINZ ,  RUEMENS WILHELM

    IPC: C07D239/10 ,  D06M15/423

    Abstract: Novel compounds of the formula wherein R1, R2 and R5 denote H, C1- 8 alkyl, allyl or C1- 8 hydroxyalkyl or alkoxyalkyl in which the hydroxyl or alkoxy group is separated from the oxygen atom Dy at least 2 carbon atoms and R3, R4 and R6 denote H or C1- 5 alkyl are produced by reacting a 4-hydroxy or alkoxy hexahydropyrimidone-2 with twice the molar amount of formaldehyde in an aqueous medium at a pH of above 9 and a temperature of 0 to 100 DEG C., and optionally reacting the product with a monoalcohol, a dialcohol or a monoalkylether of the latter, in the presence of an acid catalyst with or without a solvent or diluent. Preferred compounds have R1, R2 and R6 as H, and R3 and R4 as methyl and R5 as H or CH3. The products may be used for treating textiles.ALSO:A finishing agent for textile material which consists of or contains natural or regenerated cellulose comprises a compound of the formula wherein R1, R2 and R5 denote H, C1-8 alkyl, allyl, or C1-8 hydroxyalkyl or alkoxyalkyl in which the hydroxy or alkoxy group is separated from the oxygen atom by at least two carbon atoms, and R2, R4 and R6 denote H or C1-5 alkyl. The finishing agent is preferably used in aqueous solution together with an acid catalyst, and may be reacted with the textile material to form acetal bonds when wet or when wholly or partly dried, either immediately or after storage in the impregnated but unreacted condition. The finishing agent may be used together with known substances, e.g. dispersions of polymers such as a copolymer of n-butyl acrylate or an ethyloxylated polyamide. Exemplified acid catalysts are oxalic, maleic, monochloroacetic and hydrochloric acids, used together with MgCl2, NH4Cl or Zr(NO3)2.

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