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146 records (took 0.023 seconds)

    91.
    发明专利
    未知

    公开(公告)号：AT373022T

    公开(公告)日：2007-09-15

    申请号：AT03766231

    申请日：2003-07-18

    Applicant: BASF AG

    Inventor： DANIEL THOMAS ,  RIEGEL ULRICH ,  ELLIOTT MARK

    IPC: C08F20/06

    Abstract: A process for producing sodium acrylate polymers by free-radical polymerization of sodium acrylate with or without other monomers in an aqueous medium, which comprises using sodium acrylate in the form of an aqueous solution or dispersion obtainable by dissolving or dispersing solid sodium acrylate in an aqueous medium. The polymers thus obtainable have an improved color number and a lower residual monomer content than conventional comparable polymers.

    SECONDARY CROSS-LINKING OF HYDROGELS WITH 2-OXAZOLIDINONES
    95.
    发明专利
    SECONDARY CROSS-LINKING OF HYDROGELS WITH 2-OXAZOLIDINONES 未知

    公开(公告)号：MY124251A

    公开(公告)日：2006-06-30

    申请号：MYPI9900614

    申请日：1999-02-22

    Applicant: BASF AG

    Inventor： FUNK RUDIGER ,  FRENZ VOLKER ,  RIEGEL ULRICH ,  WEISMANTEL MARTHIAS ,  ENGELHARDT FRITZ ,  DANIEL THOMAS

    IPC: C07D263/20 ,  C08F8/30 ,  A61L15/00 ,  A61L15/60

    Abstract: THE INVENTION RELATES TO A PROCESS FOR THE GEL OR SURFACE POSTCROSSLINKING OF WATER- ABSORBING POLYMERS IN WHICH THE POLYMERS ARE TREATED WITH A SURFACE POSTCROSSLINKING SOLUTION AND DURING OR AFTER THE TREATMENT ARE POSTCROSSLINKED AND DRIED BY MEANS OF AN INCREASE IN TEMPERATURE, THE CROSSLINKER BEING A COMPOUND OF THE FORMULA IN WHICH R1 AND R2 INDEPENDENTLY OF ONE ANOTHER ARE H , HYDROXYL, PHENYL OR C1-C6- ALKYL, R3 IS HYDROGEN. C1-C12- ALKYL , C1-C12- ALKYL, C1-C12- ALKENYL OR C6-C12-ARYL AND R4 AND R5 INDEPENDENTLY OF ONE ANOTHER ARE C1-C12- ALKYL, C1-C12- ALKENYL, C6-C12- ARYL, HYDROXYL, C1-C12- ALKOXY OR HYDROGEN, DISSOLVED IN AN INERT SOLVENT, TO WATER- ABSORBING POLYMERS WHICH CAN BE OBTAINED BY SAID PROCESS, AND TO THEIR USE IN HYGIENE ARTICLES, PACKAGING MATERIALS AND NONWOVENS.

    Preparation of water-absorbing polymer comprises polymerizing (where metal sulfate is added) mixture of e.g. acid group containing monomer, cross linkers and unsaturated monomers and treating the ground polymer with post crosslinking agent
    96.
    发明专利
    Preparation of water-absorbing polymer comprises polymerizing (where metal sulfate is added) mixture of e.g. acid group containing monomer, cross linkers and unsaturated monomers and treating the ground polymer with post crosslinking agent 未知

    公开(公告)号：DE102004057868A1

    公开(公告)日：2006-06-01

    申请号：DE102004057868

    申请日：2004-11-30

    Applicant: BASF AG

    Inventor： RIEGEL ULRICH ,  DANIEL THOMAS ,  HERMELING DIETER ,  ELLIOT MARK

    IPC: C08F2/44 ,  A61L15/60 ,  C08F8/00 ,  C08F220/06 ,  C08J3/12 ,  C08J3/20 ,  C08J3/24

    Abstract: Preparation of water absorbing polymer (I) comprises polymerizing a mixture of at least one ethylenic unsaturated, acid group carrying monomer, a crosslinker and optionally a copolymerizable e.g. ethylenic unsaturated monomer and a water soluble polymer (of the monomers) to give a ground polymer (A) and treating (A) with post crosslinking agent, where before/during the polymerization, at least one water insoluble metal sulfate is added. Preparation of water absorbing polymer (I) comprises polymerizing a mixture of at least one ethylenic unsaturated, acid group carrying monomer that is partially neutralized, at least one crosslinker, optionally one or more copolymerizable ethylenic and/or allylic unsaturated monomer and optionally one or more water soluble polymer (of the monomers), which is partially grafted to give a ground polymer (A) and subsequently treating (A) with a post crosslinking agent, where before or during the polymerization, at least one water insoluble metal sulfate is added. Independent claims are also included for: (1) use of a water insoluble metal sulfate for preparing (I); (2) a water absorbing polymer particle comprising at least one monopolymerized ethylenic unsaturated, acid group containing monomer, which is partially neutralized, at least one mono polymerizable crosslinker, optionally one or more copolymerizable monopolymerized ethylenic and/or allylic unsaturated monomer, optionally one or more water soluble polymer (which is partially grafted) of the monomers, at least one reactable crosslinker and at least one monopolymerized water insoluble metal sulfate, where at least one metal sulfate is distributed in the polymer particle; and (3) a sanitary article comprising the water absorbing polymer particle.

    Method for producing polymers
    98.
    发明专利
    Method for producing polymers 未知

    公开(公告)号：ZA200501708B

    公开(公告)日：2006-05-31

    申请号：ZA200501708

    申请日：2005-02-28

    Applicant: BASF AG

    Inventor： DANIEL THOMAS ,  RIEGEL ULRICH ,  ELLIOTT MARK

    IPC: C08F20060101 ,  C08F20/06

    Abstract: A process for producing sodium acrylate polymers by free-radical polymerization of sodium acrylate with or without other monomers in an aqueous medium, which comprises using sodium acrylate in the form of an aqueous solution or dispersion obtainable by dissolving or dispersing solid sodium acrylate in an aqueous medium. The polymers thus obtainable have an improved color number and a lower residual monomer content than conventional comparable polymers.

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