SOLVENTLESS REACTION PROCESS
    2.
    发明专利

    公开(公告)号:CA2775197A1

    公开(公告)日:2012-10-27

    申请号:CA2775197

    申请日:2012-04-20

    Applicant: XEROX CORP

    Abstract: A process including reacting at least one organic acid with at least one compound of the formula R-OH, in the presence of an optional catalyst, in a reaction mixture wherein the reaction mixture is substantially free of solvent, to form a reaction product, wherein the reaction product is an ester of citric acid or an ester of tartaric acid; optionally, heating the reaction mixture; and optionally, isolating the reaction product.

    ELECTROPHORETIC DISPLAY DEVICE
    4.
    发明专利

    公开(公告)号:CA2588322C

    公开(公告)日:2012-11-27

    申请号:CA2588322

    申请日:2007-05-11

    Applicant: XEROX CORP

    Abstract: An electrophoretic display device includes a display layer of a multiplicity of individual microcapsules containing a display medium therein and conductive substrates, at least one of the conductive substrates being transparent, wherein the display layer is located in between the conductive substrates, and wherein the display medium includes one or more set of colored particles in a dielectric fluid and has an electrical conductivity of about 10 -11 to about 10 -15 S/m. The microcapsules may be made by encapsulating the display medium in the wall forming material of the microcapsule, and for example a complex coacervation process may be used.

    ELECTROPHORETIC DISPLAY DEVICE
    5.
    发明专利

    公开(公告)号:CA2588322A1

    公开(公告)日:2007-11-19

    申请号:CA2588322

    申请日:2007-05-11

    Applicant: XEROX CORP

    Abstract: An electrophoretic display device includes a display layer of a multiplicity of individual microcapsules containing a display medium therein and conductive substrates, at least one of the conductive substrates being transparent, wherein the display layer is located in between the conductive substrates, and wherein t he display medium includes one or more set of colored particles in a dielectric fluid a nd has an electrical conductivity of about 10 -11 to about 10 -15 S/m. The microcapsul es may be made by encapsulating the display medium in the wall forming material of the microcapsule, and for example a complex coacervation process may be used.

    A process for preparing amide gellant compounds with aromatic end groups

    公开(公告)号:GB2491704A

    公开(公告)日:2012-12-12

    申请号:GB201209770

    申请日:2012-06-01

    Applicant: XEROX CORP

    Abstract: A process for preparing a compound of the formula wherein R1 and R1' are alkyl, aryl alkyl, or alkyl aryl groups, R2 and R2' are alkylene, arylene, aryl alkylene, alkyl arylene groups, and R3 is an alkylene, an arylene, an aryl alkylene, or alkyl arylene group, n represents the number of repeat monomer units, the said process comprising (I) reacting a diacid of the formula HOOC-R2-C00H with a diamine of the formula H2N-R3-NH2 to form an acid-terminated oligoamide intermediate of the formula HOOC-R2-CONH-R3-HNCO-R2 -C00H; and (II) reacting the acid-terminated oligoamide intermediate with a monoalcohol of the formula R1-OH in the presence of a tin or organic titanate catalyst, in the absence of a coupling agent, and in the absence of a solvent to form the product. Also disclosed is a composition prepared by the process.

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