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    Stable aqueous suspensions of zeolite which can be easily pumped
    2.
    发明授权
    Stable aqueous suspensions of zeolite which can be easily pumped 失效
    易于泵送的稳定的沸石水性悬浮液

    公开(公告)号：US5312793A

    公开(公告)日：1994-05-17

    申请号：US905731

    申请日：1992-06-29

    申请人： Paolo Colombo ,  Pier D. Mattioli ,  Luigi Valtorta ,  Pierino Radici

    发明人： Paolo Colombo ,  Pier D. Mattioli ,  Luigi Valtorta ,  Pierino Radici

    IPC分类号： C01B39/14 ,  C11D1/72 ,  C11D1/825 ,  C11D3/12 ,  B01J20/18 ,  B01J20/28 ,  C11D3/08

    CPC分类号： C11D3/1286 ,  C11D1/8255 ,  C11D1/72

    摘要： Stable aqueous suspensions of zeolite 4A which can be easily pumped, containing from 0.5 to 65% of zeolite and from 0.05 to 6 g (per 100 g of zeolite) of a suspending agent, composed of mixtures of ethoxylated alkanols, said mixtures being obtained by ethoxylating: a) biodegradable branched alkanols, having from 10 to 18 carbon atoms and having a single branching in position 2, said mixtures containing at least 2 alkanols having a different number of C atoms; or b) mixtures containing 40-100% of branched alkanols as in a) and 60-0% of linear alkanols having from 10 to 18 C atoms.

    摘要翻译： 沸石4A的稳定含水悬浮液，其易于泵送，其含有0.5至65％的沸石和0.05至6g（每100g沸石）悬浮剂，其由乙氧基化链烷醇的混合物组成，所述混合物由 乙氧基化：a）具有10至18个碳原子并且在位置2具有单个支链的可生物降解的支链烷醇，所述混合物含有至少2个具有不同数目C原子的链烷醇; 或b）含有40-100％如a）中的支链链烷醇和60-0％的具有10至18个C原子的线性链烷醇的混合物。

    Process for the production of cumene
    3.
    发明授权
    Process for the production of cumene 失效
    异丙苯生产工艺

    公开(公告)号：US4324941A

    公开(公告)日：1982-04-13

    申请号：US225220

    申请日：1981-01-15

    申请人： Marcello Ghirga ,  Luigi Valtorta ,  Benedetto Calcagno

    发明人： Marcello Ghirga ,  Luigi Valtorta ,  Benedetto Calcagno

    IPC分类号： C07C2/70 ,  C07C2/68

    CPC分类号： C07C2/70 ,  C07C2527/173

    摘要： Cumene is prepared by alkylation of benzene with propylene in the presence of a solid phosphoric acid catalyst in a continuous process by delivering liquid benzene and liquid propylene in a molar ratio lower than 6:1, to a liquid reaction medium consisting essentially of benzene and cumene and containing the catalyst, while maintaining the temperature and composition of said medium substantially uniform in each point, operating at 170.degree.-280.degree. C. and in the liquid phase, and with a contact time higher than about 0.4 hours, expressed as the ratio between volume of catalyst and hourly volume of reagents fed in.

    摘要翻译： 通过在固体磷酸催化剂存在下，通过将液体苯和低于6:1的摩尔比的液体丙烯输送到基本上由苯和异丙基苯组成的液体反应介质，将苯与丙烯烷基化， 并含有催化剂，同时保持所述介质的温度和组成在每个点上基本上均匀，在170℃-280℃和液相下操作，接触时间高于约0.4小时，以比例 催化剂体积和加入的试剂的小时体积。