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17 条记录 (耗时 0.023 秒)

    Manufacture of non-whiteware ceramic articles
    3.
    发明授权
    Manufacture of non-whiteware ceramic articles 失效
    非白瓷陶瓷制品的制造

    公开(公告)号：US5205971A

    公开(公告)日：1993-04-27

    申请号：US591914

    申请日：1990-10-02

    申请人： Alan P. Croft ,  Brian D. Koblinski

    发明人： Alan P. Croft ,  Brian D. Koblinski

    IPC分类号： C04B35/634

    CPC分类号： C04B35/634

    摘要： Non-whiteware ceramic articles having an increased green strength are prepared from slip compositions containing a polyalkylene polyamine as an additive or a mixture of a polyalkylene polyamine and binder as an additive. An example of such an additive is tetraethylenepentamine or a mixture of tetraethylenepentamine and a styrene butadiene latex.

    摘要翻译： 具有增加的生坯强度的非白瓷陶瓷制品由含有聚亚烷基多胺作为添加剂的滑爽组合物或作为添加剂的聚亚烷基多胺和粘合剂的混合物制备。 这种添加剂的实例是四亚乙基五胺或四亚乙基五胺和苯乙烯丁二烯胶乳的混合物。

    Processing additives for clay production
    4.
    发明授权
    Processing additives for clay production 失效
    加工粘土生产添加剂

    公开(公告)号：US5057467A

    公开(公告)日：1991-10-15

    申请号：US433630

    申请日：1989-11-08

    申请人： Alan P. Croft

    发明人： Alan P. Croft

    IPC分类号： C09C1/42

    CPC分类号： C09C1/42 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/22

    摘要： The filtration rate and viscosity of a clay slurry is improved by the addition of a polyalkylene polyamine and, optionally, a latex. The additive is particularly useful in clay beneficiation.

    摘要翻译： 通过加入聚亚烷基多胺和任选的胶乳来提高粘土浆料的过滤速率和粘度。 添加剂特别适用于粘土选矿。

    Alkyleneamine composition for enhancing lime mud dewatering
    5.
    发明授权
    Alkyleneamine composition for enhancing lime mud dewatering 失效
    用于增强石灰泥脱水的亚烷基胺组合物

    公开(公告)号：US06451164B1

    公开(公告)日：2002-09-17

    申请号：US09963001

    申请日：2001-09-25

    申请人： Alan P. Croft

    发明人： Alan P. Croft

    IPC分类号： D21C1104

    CPC分类号： D21C11/0085 ,  D21C11/0078 ,  Y02P40/44

    摘要： A process for de-watering lime mud in a Krafft pulping process is described. The process includes an improvement which comprises adding an effective water-removal rate enhancing amount of an alkyleneamine to the lime mud prior to filtration. The preferred alkyleneamine is ethyleneamine, that is, an amine having at least one —(CR2—CR2—NH—)— unit wherein each R is independently is H or an alkyl (straight-chain, branched, or cyclic) group of from about 1 to about 10 carbon atoms. Ethyleneamines include ethylenediamine, diethylenetriamine, triethylenediamine, triethylenetetramine, tetraethylenepentamine, piperazine, aminoethylpiperazine, and ethyleneamine mixtures such as mixtures of ethyleneamine oligomers having an average molecular weight of about 200-500.

    摘要翻译： 描述了克拉夫特制浆工艺中脱灰石灰泥的方法。 该方法包括改进，其包括在过滤之前向石灰泥中加入有效的除水速率的增加量的亚烷基胺。 优选的亚烷基胺是亚乙基胺，即具有至少一个 - （CR 2 -CR 2 -NH-） - 单元的胺，其中每个R独立地是H或直链，支链或环状的烷基（直链，支链或环状）基团 1至约10个碳原子。 亚乙基胺包括乙二胺，二亚乙基三胺，三亚乙基二胺，三亚乙基四胺，四亚乙基五胺，哌嗪，氨基乙基哌嗪和亚乙基胺混合物，例如平均分子量为约200-500的亚乙基胺低聚物的混合物。

    2-methyl-4-benzyl-5-oxazolidinone
    6.
    发明授权
    2-methyl-4-benzyl-5-oxazolidinone 失效
    2-甲基-4-苄基-5-恶唑烷酮

    公开(公告)号：US4698433A

    公开(公告)日：1987-10-06

    申请号：US827854

    申请日：1986-02-10

    申请人： Alan P. Croft

    发明人： Alan P. Croft

    IPC分类号： C07D263/18 ,  C07D263/08

    CPC分类号： C07D263/18

    摘要： This invention relates to a new composition of matter known as 2-Methyl-4-benzyl-5-oxazolidinone and a method of preparation of the new composition comprising combining ethyl acetate and the azlactone of .alpha.-acetoaminocinnamic acid in the presence of a catalyst such as W-2 Raney nickel. By using the new composition of matter of this invention the synthesis of L-phenylalanine is shortened to fewer reactions and process steps from the current lengthy, multistep means of synthesis.

    摘要翻译： 本发明涉及称为2-甲基-4-苄基-5-恶唑烷酮的新物质组合物和新组合物的制备方法，包括在催化剂存在下将乙酸乙酯和α-内酰氨基肉桂酸的吖内酯混合 如W-2阮内镍。 通过使用本发明的新组合物，由当前长时间多步合成的方法将L-苯丙氨酸的合成缩短成较少的反应和方法步骤。

    Amine-based consistency reducers for gypsum stucco slurries
    9.
    发明授权
    Amine-based consistency reducers for gypsum stucco slurries 失效
    用于石膏灰泥浆的胺基稠度降低剂

    公开(公告)号：US5151130A

    公开(公告)日：1992-09-29

    申请号：US644727

    申请日：1991-01-23

    申请人： Alan P. Croft ,  Brian D. Koblinski

    发明人： Alan P. Croft ,  Brian D. Koblinski

    IPC分类号： C04B24/12 ,  C04B28/14

    CPC分类号： C04B24/121 ,  C04B28/14 ,  C04B2103/302

    摘要： A method for reducing the consistency of a water and gypsum stucco slurry comprising admixing water, stucco, and an additive, the additive in an amount effective to reduce the consistency of the admixed slurry as compared to a slurry containing only water and stucco, and the additive selected from the group consisting of one or more polyalkylene polyamines having a molecular weight below 1,000.

    摘要翻译： 一种降低水和石膏灰浆的稠度的方法，包括混合水，灰泥和添加剂，所述添加剂的量与仅含水和灰泥的浆料相比有效降低混合浆料的稠度，并且 选自一种或多种分子量低于1,000的聚亚烷基多胺的添加剂。

    2-methyl-4-benzyl-5-oxazolidinone
    10.
    发明授权
    2-methyl-4-benzyl-5-oxazolidinone 失效
    2-甲基-4-苄基-5-恶唑烷酮

    公开(公告)号：US4795816A

    公开(公告)日：1989-01-03

    申请号：US80330

    申请日：1987-07-31

    申请人： Alan P. Croft

    发明人： Alan P. Croft

    IPC分类号： C07D263/18 ,  C07D263/08

    CPC分类号： C07D263/18

    摘要： This invention relates to a new composition of matter known as 2-Methyl-4-benzyl-5-oxazolidinone and a method of preparation of the new composition comprising combining ethyl acetate and the azlactone of .alpha.-acetoaminocinnamic acid in the presence of a catalyst such as W-2 Raney nickel. By using the new composition of matter of this invention the synthesis of L-phenylalanine is shortened to fewer reactions and process steps from the current lengthy, multistep means of synthesis.

    摘要翻译： 本发明涉及称为2-甲基-4-苄基-5-恶唑烷酮的新物质组合物和新组合物的制备方法，包括在催化剂存在下将乙酸乙酯和α-内酰氨基肉桂酸的吖内酯混合 如W-2阮内镍。 通过使用本发明的新组合物，由当前长时间多步合成的方法将L-苯丙氨酸的合成缩短成较少的反应和方法步骤。