Process for the preparation of 3-substituted thiophenes
    1.
    发明授权
    Process for the preparation of 3-substituted thiophenes 失效
    3-取代噻吩的制备方法

    公开(公告)号:US5512685A

    公开(公告)日:1996-04-30

    申请号:US244379

    申请日:1994-12-20

    CPC分类号: C07D333/08

    摘要: The invention relates to a process for the preparation of 3-substituted thiophenes in which the substituent is a C.sub.4 -C.sub.18 -alkyl group. According to the invention, the preparation is carried out by allowing an alkali metal salt of a C.sub.4 -C.sub.18 -alkyl-succinic acid to react with a compound of sulfur and phosphorus, e.g. tetraphosphorus decasulfide, in an organic solvent at a temperature of 100.degree.-180.degree. C., the product obtained being 3-(C.sub.4 -C.sub.18 -alkyl)thiophene. The said reaction may be the last step in a process in which the initial material is maleic acid anhydride with which .alpha.-C.sub.4 -C.sub.18 -alkene is combined so that C.sub.4 -C.sub.18 -alkenylsuccinic acid anhydride is obtained, whereafter this is hydrogenated catalytically to produce C.sub.4 -C.sub.18 -alkylsuccinic acid anhydride. This is thereafter reacted with an alkali metal hydroxide so that an alkali salt of the C.sub.4 -C.sub.18 -alkylsuccinic acid is obtained, which salt is reacted with a compound of sulfur and phosphorus to produce 3-(C.sub.4 -C.sub.18 -alkyl)thiophene, which constitutes the final product.

    摘要翻译: PCT No.PCT / FI92 / 00333 Sec。 371日期1994年12月20日第 102(e)日期1994年12月20日PCT提交1992年12月8日PCT公布。 出版物WO93 / 12106 日期:1993年6月24日。本发明涉及一种制备3-取代噻吩的方法,其中取代基是C4-C18-烷基。 根据本发明,通过使C4-C18-烷基 - 琥珀酸的碱金属盐与硫和磷的化合物反应来进行制备。 十四硫化四磷,在有机溶剂中,在100-180℃的温度下,得到的产物是3-(C 4 -C 18 - 烷基)噻吩。 所述反应可以是其中初始材料是马来酸酐与其中α-C 4 -C 18 - 烯烃组合使得得到C 4 -C 18 - 烯基琥珀酸酐的方法中的最后一个步骤,然后将其氢化催化以产生 C4-C18-烷基琥珀酸酐。 然后与碱金属氢氧化物反应,得到C4-C18-烷基琥珀酸的碱金属盐,该盐与硫和磷的化合物反应生成3-(C 4 -C 18烷基)噻吩,其中 构成最终产品。

    Polymer dispersion and method to produce the same
    2.
    发明授权
    Polymer dispersion and method to produce the same 失效
    聚合物分散体及其制造方法

    公开(公告)号:US06753377B1

    公开(公告)日:2004-06-22

    申请号:US09890784

    申请日:2001-08-06

    IPC分类号: C08L300

    摘要: The invention relates to a starch-based polymer dispersion, which contains a copolymer of starch with monomers. The invention also relates to a process for the preparation of said dispersion and its use as a surface sizing additive for paper and as a wet- and dry-strengthener for paper which is added to the wet end of the paper machine.

    摘要翻译: 本发明涉及淀粉基聚合物分散体,其含有淀粉与单体的共聚物。 本发明还涉及一种制备所述分散体的方法及其用作纸张的表面施胶添加剂以及作为纸张的湿 - 和干增强剂的用途,其被添加到造纸机的湿端。

    Chemical improvement in paper making
    3.
    发明申请
    Chemical improvement in paper making 审中-公开
    造纸化学改进

    公开(公告)号:US20070107865A1

    公开(公告)日:2007-05-17

    申请号:US10583598

    申请日:2004-12-22

    摘要: The invention relates to an improvement in the printability of uncoated mechanical pulp paper grades, especially to an improvement in the printability of supercalendered (SC) papers, particularly in rotogravure printing. In the method according to the invention, a mixture of alkyl ketene dimer and styrene maleic acid anhydride co-polymer is applied onto the paper web in connection with supercalendering.

    摘要翻译: 本发明涉及未涂覆的机械浆纸级别的可印刷性的改进,特别是改进超级砑光(SC)纸的可印刷性,特别是在凹版印刷中。 在根据本发明的方法中,将烷基烯酮二聚体和苯乙烯马来酸酐共聚物的混合物与超级压光相结合地施加到纸幅上。

    Printed substrate and printing method
    4.
    发明申请
    Printed substrate and printing method 失效
    印刷基板和印刷方法

    公开(公告)号:US20050191469A1

    公开(公告)日:2005-09-01

    申请号:US11022047

    申请日:2004-12-23

    摘要: The invention refers to a printed substrate comprising a substrate with an oleophilic surface having a Gurley-Hill permeance value bigger than 5000 s/100 ml, the ink printed on the substrate having an IGT ink set-off value bigger than 0.60 print density units at 30 s delay time. The invention also refers to a printing method performed in at least one printing unit under use of following substrate/ink combination: the substrate has an oleophilic surface and is non-porous, i.e. has a Gurley-Hill permenace value bigger than 5000 s/100 ml, the pigment carrier/ink has an IGT ink set-off value larger than 0.60 print density units at 30 s delay time.

    摘要翻译: 本发明涉及一种印刷基材,其包括具有高于5000s / 100ml的Gurley-Hill渗透值的亲油表面的基材,印刷在基材上的油墨具有大于0.60印刷密度单位的IGT墨水排出值 30秒的延迟时间。 本发明还涉及在使用以下基底/油墨组合的至少一个印刷单元中进行的印刷方法:所述基材具有亲油性表面并且是无孔的,即具有大于5000s / 100的Gurley-Hill渗透值 ml,颜料载体/墨水在30秒延迟时间具有大于0.60印刷密度单位的IGT墨水排出值。

    Printed substrate and printing method
    7.
    发明授权
    Printed substrate and printing method 失效
    印刷基板和印刷方法

    公开(公告)号:US07435473B2

    公开(公告)日:2008-10-14

    申请号:US11022047

    申请日:2004-12-23

    摘要: The invention refers to a printed substrate comprising a substrate with an oleophilic surface having a Gurley-Hill permeance value bigger than 5000 s/100 ml, the ink printed on the substrate having an IGT ink set-off value bigger than 0.60 print density units at 30 s delay time. The invention also refers to a printing method performed in at least one printing unit under use of following substrate/ink combination: the substrate has an oleophilic surface and is non-porous, i.e. has a Gurley-Hill permenace value bigger than 5000 s/100 ml, the pigment carrier/ink has an IGT ink set-off value larger than 0.60 print density units at 30 s delay time.

    摘要翻译: 本发明涉及一种印刷基材,其包括具有高于5000s / 100ml的Gurley-Hill渗透值的亲油表面的基材,印刷在基材上的油墨具有大于0.60印刷密度单位的IGT墨水排出值 30秒的延迟时间。 本发明还涉及在使用以下基底/油墨组合的至少一个印刷单元中进行的印刷方法:所述基材具有亲油性表面并且是无孔的,即具有大于5000s / 100的Gurley-Hill渗透值 ml,颜料载体/墨水在30秒延迟时间具有大于0.60印刷密度单位的IGT墨水排出值。