Production of high-quality, high-brightness papermaking pulp, e.g. from recycled paper, uses an N-alkylammonium-acetonitrile salt as low temperature bleach activator for per compounds

    公开(公告)号:DE10153409A1

    公开(公告)日:2003-05-15

    申请号:DE10153409

    申请日:2001-10-30

    Applicant: BASF AG

    Abstract: The bleaching activator used in a mixture for production of a papermaking pulp is an N-alkylammonium-acetonitrile salt. The bleaching activator used in a mixture for production of a papermaking pulp is an N-alkylammonium-acetonitrile salt of formula (I), the other components of the mixture being: (A) a pulp containing cellulose of vegetable origin, water and various materials depending on the method of pulp production; and (B) a bleach which is hydrogen peroxide, an alkali metal perborate or its hydrate, an alkali metal percarbonate, a persulfate or a typical oxygen bleach such as an organic peracid. R = 1-24C alkyl (optionally interrupted by non-adjacent O atoms and/or optionally OH-substituted), 4-24C cycloalkyl, 7-24C alkaryl or -CR R -CN; R and R = as for R or together form a 4- to 9-membered ring containing at least one C atom and also at least one O, S or N atom; R and R = H, 1-24C alkyl (optionally interrupted by non-adjacent O atoms and/or optionally OH-substituted), 4-24C cycloalkyl or 7-24C alkaryl; and Y = a sulfate, halide, methosulfate, tosylate or hydrogen sulfate anion. An Independent claim is also included for a de-inking formulation comprising the bleaching activator (I) together with: (i) an anionic and/or nonionic surfactant; (ii) an alkali source such as sodium hydroxide or silicate or silicon dioxide, optionally together with a complex-former and/or other additives; and (iii) a bleach as in (B) above.

    44.
    发明专利
    未知

    公开(公告)号:NO20074255L

    公开(公告)日:2007-11-30

    申请号:NO20074255

    申请日:2007-08-21

    Applicant: BASF AG

    Abstract: The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i. impregnation of a veneer with an aqueous curable composition which comprises a) at least one curable urea compound selected from urea compounds H which have at least one N-bonded group of the formula CH2OR, where R is hydrogen or C1-C4-alkyl, and/or a 1,2-bishydroxyethane-1,2-diyl group bridging the two nitrogen atoms of the urea, precondensates of the urea compound H, and reaction products or mixtures of the urea compound H with at least one alcohol which is selected from C1-C6-alkanols, C2-C6-polyols and oligoethylene glycols, and b) at least one catalyst K effecting crosslinking of the urea compound; ii) gluing of the impregnated veneer and/or the substrate with a glue composition and iii) processing of the glued veneer to give a wood-base material at elevated temperature with curing of the crosslinkable urea compound, the impregnated veneer comprising the crosslinkable urea compound in substantially uncrosslinked form before the gluing in step ii).

    47.
    发明专利
    未知

    公开(公告)号:DE102005047363A1

    公开(公告)日:2007-04-12

    申请号:DE102005047363

    申请日:2005-10-04

    Abstract: The invention relates to a lignocellulose material comprising a crosslinkable nitrogen compound, technically a formaldehyde condensate, in crosslinked form in a constituent amount (N) of at least 1% by weight, calculated as nitrogen and based on the total weight of the lignocellulose material, in which the ratio (FA/N) of formaldehyde emission (FA), determined by means of the bottle method according to EN 717, part 3, to constituent amount of the nitrogen compound (N) exhibits a value of at most 5.0×10−3, and to a process for the preparation thereof.

    48.
    发明专利
    未知

    公开(公告)号:DE102005047362A1

    公开(公告)日:2007-04-12

    申请号:DE102005047362

    申请日:2005-10-04

    Abstract: The invention relates to a method for producing modified lignocellulosic materials. Said method consists of the following steps a) the lignocellulosic material is impregnated with an aqueous composition which contains i) at least one cross-linkable nitrogen compound and ii) at least one substance which catalyses the cross-linking, b) the impregnated lignocellulosic materials are treated at higher temperatures in order to remove the water and to cross-link the cross-linkable nitrogen compound. In step b) the impregnated lignocellulosic material is treated with overheated steam. The invention also relates to lignocellulosic materials which are obtained according to said method.

    PRODUCTION OF MODIFIED LIGNOCELLULOSIC MATERIALS

    公开(公告)号:CA2622626A1

    公开(公告)日:2007-04-12

    申请号:CA2622626

    申请日:2006-10-02

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing modified lignocellulosic materials. Said method consists of the following steps a) the lignocellulosi c material is impregnated with an aqueous composition which contains i) at lea st one cross-linkable nitrogen compound and ii) at least one substance which catalyses the cross-linking, b) the impregnated lignocellulosic materials ar e treated at higher temperatures in order to remove the water and to cross-lin k the cross-linkable nitrogen compound. In step b) the impregnated lignocellulosic material is treated with overheated steam. The invention als o relates to lignocellulosic materials which are obtained according to said method.

    USE OF COPOLYMERS CONTAINING SULFONIC ACID GROUPS, AS AN ADDITIVE IN DETERGENTS AND CLEANERS

    公开(公告)号:CA2488329A1

    公开(公告)日:2003-12-18

    申请号:CA2488329

    申请日:2003-06-04

    Applicant: BASF AG

    Abstract: The invention relates to sulfonic acid group-containing copolymers, which al so contain the following constituents that are incorporated by polymerization i n a statistical or block-by-block manner: (a) 30 to 95 mol % of a least one monoethylenically unsaturated carboxylic acid, one monoethylenically unsaturated carboxylic acid ester, or one water-soluble salt of a monoethylenically unsaturated carboxylic acid; (b) 3 to 35 mol % of at least one sulfonic acid group-containing monomer of formula (I), in which the variables have the following meanings: R represents hydrogen or methyl; X represents a chemical bond or -C00-R1-; R1 represents unbranched or branched C1-C4 alkylene; M represents hydrogen, alkali metal or ammonium, and; (c) 2 to 35 mol % of at least one non-ionic monomer of formula (II), in which the variables have the following meanings: R2 represents hydrogen or methyl; R3 represents a chemical bond or unbranched or branched C1-C6 alkylene; R4 represents identical or different unbranched or branched C2-C4 alkylene groups; R5 represents unbranched or branched C1-C6 alkyl, C5-C8 cycloalkyl o r aryl, and; n represents 3 to 50. These copolymers are used as an additive in detergents and cleansers.

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