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99 条记录 (耗时 0.026 秒)

    Novel lubricants
    93.
    发明授权
    Novel lubricants 失效
    新型润滑剂

    公开(公告)号：US5055626A

    公开(公告)日：1991-10-08

    申请号：US471454

    申请日：1990-01-29

    申请人： Suzzy C. Ho ,  Margaret M. Wu

    发明人： Suzzy C. Ho ,  Margaret M. Wu

    IPC分类号： C07C2/48 ,  C10G50/02 ,  C10M105/06

    CPC分类号： C10M105/06 ,  C07C2/48 ,  C10G50/02 ,  C07C2521/08 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/30 ,  C10M2203/06

    摘要： Alkylaromatic lubricant products are produced by the reaction of a long chain alkyne such as octyne, decyne or dodecyne over a reduced Group VIB metal oxide catalyst, preferably reduced chromium on silica. The products, which are predominantly n-alkyl substituted, possess excellent thermal and oxidative stability and may be used as lubricant base stocks and viscosity improvers.

    摘要翻译： 烷基芳族润滑剂产物通过长链炔烃如辛炔，癸炔或十二炔与还原的VIB族金属氧化物催化剂反应制备，优选在二氧化硅上还原的铬。 主要为正烷基取代的产品具有优异的热和氧化稳定性，可用作润滑剂基础油和粘度改进剂。

    Regeneration of reduced supported chromium oxide catalyst for alpha-olefin oligomerization
    95.
    发明授权
    Regeneration of reduced supported chromium oxide catalyst for alpha-olefin oligomerization 失效
    用于α-烯烃低聚的还原的负载型铬氧化物催化剂的再生

    公开(公告)号：US4926004A

    公开(公告)日：1990-05-15

    申请号：US282362

    申请日：1988-12-09

    申请人： Bruce P. Pelrine ,  Margaret M. Wu

    发明人： Bruce P. Pelrine ,  Margaret M. Wu

    IPC分类号： B01J23/92 ,  B01J38/12 ,  C07C2/10

    CPC分类号： B01J38/12 ,  B01J23/92 ,  C07C2/10 ,  C07C2521/08 ,  C07C2523/26 ,  Y02P20/584

    摘要： A process for producing liquid oligomers useful as lubricants from alpha-olefins feedstock, such as 1-decene. The olefins are oligomerized over a supported and reduced metal oxide catalyst from Group VIB of the Periodic Table to produce the oligomers. The chromium-on-silica oligomerization catalysts can be regenerated to allow repeated recycling of the catalyst with reduced losses in yield of the lubricant. The regeneration process is particularly useful to regenerate catalyst deactivated during the course of oligomerization at high temperatures to produce low viscosity HVI-PAO lubricant. The regeneration process is carried out by (i) purging the deactivated catalyst with inert gas to strip unreacted olefin and lubricant product; (ii) contacting the purged catalyst with a stream of oxidizing gas at an elevated temperature to oxidize the carbonaceous deposits; and (iii) cooling the catalyst and contacting it with a stream of reducing gas to reduce the metal component to a lower valence state.

    摘要翻译： 用于生产由α-烯烃原料如1-癸烯用作润滑剂的液体低聚物的方法。 烯烃在元素周期表VIB的负载和还原的金属氧化物催化剂上低聚，以产生低聚物。 可以再生铬 - 二氧化硅低聚催化剂，以允许反复循环使用催化剂，同时减少润滑剂的产率损失。 再生过程特别有用于在低温反应过程中在高温下再生催化剂失活以产生低粘度HVI-PAO润滑剂。 再生过程是通过（i）用惰性气体净化去活化的催化剂以除去未反应的烯烃和润滑剂产物; （ii）在高温下使被吹扫的催化剂与氧化气体流接触以氧化碳质沉积物; 和（iii）冷却催化剂并将其与还原气体流接触以将金属组分降低至更低的化合价态。

    High viscosity index synthetic lubricant compositions
    96.
    发明授权
    High viscosity index synthetic lubricant compositions 失效
    高粘度指数合成润滑剂组合物

    公开(公告)号：US4827064A

    公开(公告)日：1989-05-02

    申请号：US210435

    申请日：1988-06-23

    申请人： Margaret M. Wu

    发明人： Margaret M. Wu

    IPC分类号： C10G50/02 ,  C10M143/08 ,  C07C2/08 ,  C07C9/22

    CPC分类号： C10G50/02 ,  C10M143/08 ,  C10M2205/00 ,  C10M2205/028 ,  C10N2220/02

    摘要： Novel lubricant compositions comprising polyalphaolefins are disclosed having high viscosity indices with low pour point. The compositions are characterized by a uniform molecular structure with low branch ratios. The invention describes a liquid lubricant composition comprising C.sub.30 -C.sub.1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000 number average molecular weight between 300 and 18,000, molecular weight distribution between 1 an 5 and pour point below -15.degree. C. 1-decene trimer comprising 9-methyl, 11-octylheneicosane and 11-octyldocosane is disclosed.

    摘要翻译： 公开了包含聚α-烯烃的新型润滑剂组合物，具有低倾点的高粘度指数。 组合物的特征在于具有低分支比的均匀分子结构。 本发明描述了一种包含C30-C1300烃的液体润滑剂组合物，所述组合物的分支比小于0.19，重均分子量在300和45,000之间，数均分子量在300和18,000之间，分子量分布在1和5之间， 低于-15℃。公开了包含9-甲基，11-辛基二十二烷和11-辛基二十二烷的1-癸烯三聚体。

    Selective oxidation of ethyl toluene or methyl styrene isomer mixtures to enrich meta-isomer content
    99.
    发明授权
    Selective oxidation of ethyl toluene or methyl styrene isomer mixtures to enrich meta-isomer content 失效
    乙基甲苯或甲基苯乙烯异构体混合物的选择性氧化以富集间 - 异构体含量

    公开(公告)号：US4374297A

    公开(公告)日：1983-02-15

    申请号：US336102

    申请日：1981-12-30

    申请人： John M. Klosek ,  Margaret M. Wu

    发明人： John M. Klosek ,  Margaret M. Wu

    IPC分类号： C07C7/148 ,  C07C7/00

    CPC分类号： C07C7/14816

    摘要： The meta isomer content of ethyl toluene or methyl styrene isomer mixtures containing predominately meta isomer and para isomer is increased by subjecting the mixture to oxidation with an oxygen containing gas, e.g. air in the presence of a zeolite modified with a transition metal oxidation catalyst, e.g. Co or Cu ZSM-5. The para isomer is selectively oxidized and the meta isomer is easily separated from the product to give isomer mixtures containing greater than 90 percent meta from mixtures containing 60-65 percent meta and not separable by conventional means.

    摘要翻译： 含有主要间位异构体和对位异构体的乙基甲苯或甲基苯乙烯异构体混合物的间位异构体含量通过使含氧气体氧化，例如， 在用过渡金属氧化催化剂改性的沸石的存在下， Co或Cu ZSM-5。 对位异构体被选择性氧化，并且间位异构体容易从产物中分离出来，得到含有大于90％的含有60-65