Polyalkylene ether prepn - with removal of basic catalyst salt by hexafluorosilic acid

    公开(公告)号:DE2204515A1

    公开(公告)日:1973-08-09

    申请号:DE2204515

    申请日:1972-02-01

    Applicant: BASF AG

    Abstract: Pure polyalkylene ethers are prepd. by polymsn. of alkylene oxides with 2-4C in the alkylene chain using basic alkali salts catalysts. After completion of the polymsn. the catalysts are bound with hexafluorosilicic acid and the salt and water formed removed. The soln. does not need to be neutralised exactly to equiv. pt. as the alkali hexafluorosilicate can absorb hexafluorosilicic acid as well as appreciable amts. of basic alkali salts.

    4.
    发明专利
    未知

    公开(公告)号:DE3861060D1

    公开(公告)日:1990-12-20

    申请号:DE3861060

    申请日:1988-05-26

    Applicant: BASF AG

    Abstract: 4-isopropylcyclohexylmethanol and its alkyl ethers of the general formula I (I) where R1 is H or C1-C4-alkyl, are prepared by a process in which the novel 4-(1-alkoxy-1-methylethyl)-benzaldehyde or its dialkyl acetal of the general formula II (II) where X is oxygen (IIa) or its two R2O groups (IIb) and R2 and R3 are each C1-C4-alkyl, is heated to 100 DEG -250 DEG C., preferably 130 DEG -200 DEG C., under a hydrogen pressure of from 50 to 350, preferably from 150 to 300, bar in the presence of a noble metal of group VIII of the Periodic Table.

    5.
    发明专利
    未知

    公开(公告)号:DE3718564A1

    公开(公告)日:1988-12-15

    申请号:DE3718564

    申请日:1987-06-03

    Applicant: BASF AG

    Abstract: 4-isopropylcyclohexylmethanol and its alkyl ethers of the general formula I (I) where R1 is H or C1-C4-alkyl, are prepared by a process in which the novel 4-(1-alkoxy-1-methylethyl)-benzaldehyde or its dialkyl acetal of the general formula II (II) where X is oxygen (IIa) or its two R2O groups (IIb) and R2 and R3 are each C1-C4-alkyl, is heated to 100 DEG -250 DEG C., preferably 130 DEG -200 DEG C., under a hydrogen pressure of from 50 to 350, preferably from 150 to 300, bar in the presence of a noble metal of group VIII of the Periodic Table.

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