4.
    发明专利
    未知

    公开(公告)号:DE69013377D1

    公开(公告)日:1994-11-24

    申请号:DE69013377

    申请日:1990-03-19

    Applicant: KAO CORP

    Abstract: A process is disclosed for the production of an alkyl glycoside stable in hue and odor, which comprises the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing a higher alcohol, (2) decoloring the alkyl glycoside reaction product with hydrogen peroxide, (3) contacting the decolored alkyl glycoside with a metal/hydrogen complex represented by formula (I) M(BH4)z (I) wherein M is an alkali metal, Ca, Zn or (CH3)4N; and z is 1 when M is an alkali metal or (CH3)4N and z is 2 when M is Ca or Zn; to substantially eliminate residual hydrogen peroxide, and then (4) decomposing the remaining metal/hydrogen complex with an acid.

    DEINKING AGENT FOR REGENERATING WASTE PAPER

    公开(公告)号:CA2032809A1

    公开(公告)日:1991-06-23

    申请号:CA2032809

    申请日:1990-12-20

    Applicant: KAO CORP

    Abstract: A deinking agent for regenerating waste paper, which comprises a reaction product obtained by reacting a compound having an OH group, which is represented by the following (A) or (B) with a dicarboxylic acid or an anhydride thereof as an active ingredient: (A) a compound obtained by adding ethylene oxide and propylene oxide to a higher fatty acid having 8 to 22 carbon atoms in such a manner as to control the molar ratio of ethylene oxide/propylene oxide to from 1 to 4 and to control the total amount of the added ethylene oxide and propylene oxide to from 10 to 50 moles on average; or (B) an incomplete ester of a polyhydric alcohol, to which ethylene oxide and propylene oxide have been added in such a manner as to control the molar ratio of ethylene oxide/propylene oxide to from 1 to 4 and to control the total amount of the added ethylene oxide and propylene oxide to from 10 to 50 moles per OH group on average, and a higher fatty acid having 8 to 22 carbon atoms; is disclosed. With the use of this deinking agent, a deinked pulp having a high degree of whiteness and a small residual ink number can be obtained.

    10.
    发明专利
    未知

    公开(公告)号:DE69013377T2

    公开(公告)日:1995-04-27

    申请号:DE69013377

    申请日:1990-03-19

    Applicant: KAO CORP

    Abstract: A process is disclosed for the production of an alkyl glycoside stable in hue and odor, which comprises the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing a higher alcohol, (2) decoloring the alkyl glycoside reaction product with hydrogen peroxide, (3) contacting the decolored alkyl glycoside with a metal/hydrogen complex represented by formula (I) M(BH4)z (I) wherein M is an alkali metal, Ca, Zn or (CH3)4N; and z is 1 when M is an alkali metal or (CH3)4N and z is 2 when M is Ca or Zn; to substantially eliminate residual hydrogen peroxide, and then (4) decomposing the remaining metal/hydrogen complex with an acid.

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