Method for preparation of silica particles
    1.
    发明授权
    Method for preparation of silica particles 失效
    二氧化硅颗粒的制备方法

    公开(公告)号:US5256386A

    公开(公告)日:1993-10-26

    申请号:US540307

    申请日:1990-06-14

    摘要: Silica particles which are substantially spherical, have a particle size of 1 to 100 .mu.m, a very narrow pore size distribution and a low alkali metal content. The particles can be prepared by sol-gel technique using emulsification technique for drop formation. The process comprises a sol growth step in a basic environment based on ammonium or amines and a post-treatment in such an environment. The silica particles are particularly suitable for use in chromatography as they have very good particle and porosity properties and high purity.

    摘要翻译: 基本上为球形的二氧化硅颗粒的粒径为1-100μm,非常窄的孔径分布和低的碱金属含量。 颗粒可以通过使用乳化技术的溶胶 - 凝胶技术制备用于液滴形成。 该方法包括在基于铵或胺的碱性环境中的溶胶生长步骤和在这种环境中的后处理。 二氧化硅颗粒特别适用于色谱法,因为它们具有非常好的颗粒和孔隙性能和高纯度。

    Surface coating method employing a temporary bonding
    2.
    发明授权
    Surface coating method employing a temporary bonding 失效
    使用临时粘接的表面涂布法

    公开(公告)号:US4293596A

    公开(公告)日:1981-10-06

    申请号:US673843

    申请日:1976-04-05

    CPC分类号: B05D3/067 B05D3/0466

    摘要: A method of coating which involves applying to a surface a dispersion containing a main bonding agent and a temporary bonding agent. The main bonding agent is not film forming at room temperature. Next the continuous phase of the dispersion is permitted to evaporate or is driven off, followed by precipitation of the main bonding agent and the temporary bonding agent to form a porous powder layer on the surface. The temporary bonding agent bonds the main bonding agent to the surface. The porous layer is then exposed to a solvent which causes the particles of the bonding agents to flow together, and any excess solvent is removed.

    摘要翻译: 一种涂布方法,其包括向表面涂布含有主粘合剂和临时粘合剂的分散体。 主要粘合剂在室温下不成膜。 接下来,允许分散体的连续相蒸发或被驱除,然后沉淀主粘合剂和临时粘合剂以在表面上形成多孔粉末层。 临时粘合剂将主要粘合剂粘合到表面。 然后将多孔层暴露于使粘结剂颗粒一起流动的溶剂,并除去任何多余的溶剂。

    Cutting insert and holder for metal cutting machining
    4.
    发明授权
    Cutting insert and holder for metal cutting machining 有权
    金属切削加工切削刀片和刀柄

    公开(公告)号:US06343898B1

    公开(公告)日:2002-02-05

    申请号:US09722011

    申请日:2000-11-27

    IPC分类号: B23B2904

    摘要: A metal cutting tool includes a holder arrangement, an indexible cutting insert seated on an insert-receiving site of the holder arrangement, and a screw for fastening the insert to the site. The bottom side of the insert includes more than two upright abutment surfaces arranged to abut respective upright support surfaces of the site, whereby the areas of contact formed by the mutually abutting surfaces lie inside of an outer perimeter of the insert. The abutment surfaces are oriented non-parallel to one another. The screw is arranged to urge the insert in a direction whereby less than all of the abutment surfaces abut respective support surfaces, and at least one abutment surface does not abut a support surface. When the insert is indexed, the non-abutting abutment surface is relocated and caused to abut a support surface when the screw is tightened, while an abutment surface that previously abutted a support surface becomes a non-abutting surface.

    摘要翻译: 金属切削工具包括保持器装置,位于保持器装置的插入物接收位置上的可分度的切削刀片以及用于将刀片紧固到现场的螺钉。 插入件的底侧包括多于两个直立的邻接表面,其布置成邻接位置的相应的直立支撑表面,由此由相互邻接的表面形成的接触区域位于插入件的外周边的内侧。 邻接表面彼此不平行。 螺钉被布置成沿着一个方向推动插入件,由此小于所有的邻接表面邻接相应的支撑表面,并且至少一个邻接表面不邻接支撑表面。 当插入件被分度时,当紧固螺钉时,不邻接的邻接表面被重新定位并且使其邻接支撑表面,同时预先抵靠支撑表面的邻接表面变成非抵接表面。

    Papermaking process
    5.
    发明授权
    Papermaking process 失效
    造纸过程

    公开(公告)号:US4961825A

    公开(公告)日:1990-10-09

    申请号:US411241

    申请日:1989-09-22

    摘要: In the production of paper or pulp sheets from a paper stock, a binder is added which comprises cationic and anionic components to improve the paper characteristics and the stock characteristics, such that increased retention and a more readily dewatered stock are obtained.The anionic component consists of colloidal anionic particles having at least one surface layer of aluminum silicate or aluminum-modified silicic acid, such that the surface groups of the particles contain silicium and aluminum atoms in a ratio of from 9.5:0.5 to 7.5:2.5.The cationic component consists of cationic carbohydrate having a degree of substitution of 0.01-1.0.

    摘要翻译: 在从纸料制造纸或纸浆片材中,添加包含阳离子和阴离子组分的粘合剂以改善纸张特性和储存特性,从而获得增加的保留量和更容易脱水的原料。 阴离子组分由具有至少一个硅酸铝表面层或铝改性硅酸的胶体阴离子颗粒组成,使得颗粒的表面基团含有比例为9.5:0.5至7.5:2.5的硅和铝原子。 阳离子组分由取代度为0.01-1.0的阳离子碳水化合物组成。

    Cutting insert and holder for metal cutting machining
    6.
    发明授权
    Cutting insert and holder for metal cutting machining 有权
    金属切削加工切削刀片和刀柄

    公开(公告)号:US06168356A

    公开(公告)日:2001-01-02

    申请号:US09337676

    申请日:1999-06-22

    IPC分类号: B23B2716

    摘要: A metal cutting tool includes a holder arrangement, an indexible cutting insert seated on an insert-receiving site of the holder arrangement, and a screw for fastening the insert to the site. The bottom side of the insert includes more than two upright abutment surfaces arranged to abut respective upright support surfaces of the site, whereby the areas of contact formed by the mutually abutting surfaces lie inside of an outer perimeter of the insert. The abutment surfaces are oriented non-parallel to one another. The screw is arranged to urge the insert in a direction whereby less than all of the abutment surfaces abut respective support surfaces, and at least one abutment surface does not abut a support surface. When the insert is indexed, the non-abutting abutment surface is relocated and caused to abut a support surface when the screw is tightened, while an abutment surface that previously abutted a support surface becomes a non-abutting surface.

    摘要翻译: 金属切削工具包括保持器装置,位于保持器装置的插入物接收位置上的可分度的切削刀片以及用于将刀片紧固到现场的螺钉。 插入件的底侧包括多于两个直立的邻接表面,其布置成邻接位置的相应的直立支撑表面,由此由相互邻接的表面形成的接触区域位于插入件的外周边的内侧。 邻接表面彼此不平行。 螺钉被布置成沿着一个方向推动插入件,由此小于所有的邻接表面邻接相应的支撑表面,并且至少一个邻接表面不邻接支撑表面。 当插入件被分度时,当紧固螺钉时,不邻接的邻接表面被重新定位并且使其邻接支撑表面,同时预先抵靠支撑表面的邻接表面变成非抵接表面。

    Soil-repellent coating composition
    9.
    发明授权
    Soil-repellent coating composition 失效
    防污涂料组合物

    公开(公告)号:US4600735A

    公开(公告)日:1986-07-15

    申请号:US701928

    申请日:1985-02-15

    CPC分类号: C08K3/36 C09D129/04

    摘要: A soil-repellent coating composition comprising silica, polyvinyl alcohol and a wetting agent in an aqueous carrier medium. The composition is characterized in that it, in addition to the aqueous carrier medium, contains 0.5-30% by weight of silica and 0.01-6% by weight of polyvinyl alcohol, and 0.05-2.5% by weight of a wetting agent, based on the total weight of the composition. The ready-made coating composition comprises 0.05-5% by weight of silica, 0.05-0.5% by weight of polyvinyl alcohol and 0.05-0.5% by weight of the wetting agent. The silica is present in the form of an alkali stabilized, preferably ammonium stabilized silica sol with an average particle size of 4-30 nm. The polyvinyl alcohol preferably has a hydrolysis degree of 85-100% and an average molecular weight of 15,000-100,000. The weight ratio of silica to polyvinyl alcohol is above 3:1 and preferably from 5:1 to 40:1. The wetting agent preferably is nonionic. The aqueous carrier medium of the composition may comprise a water-miscible, low-boiling solvent such as ethanol in an amount of up to 20% by weight.

    摘要翻译: 一种防污涂料组合物,其包含二氧化硅,聚乙烯醇和在载体介质中的润湿剂。 该组合物的特征在于除了水性载体介质之外,其含有0.5-30重量%的二氧化硅和0.01-6重量%的聚乙烯醇,以及0.05-2.5重量%的润湿剂,基于 组合物的总重量。 现成的涂料组合物包含0.05-5重量%的二氧化硅,0.05-0.5重量%的聚乙烯醇和0.05-0.5重量%的润湿剂。 二氧化硅以平均粒径为4-30nm的碱稳定的,优选铵稳定的二氧化硅溶胶的形式存在。 聚乙烯醇的水解度优选为85-100%,平均分子量为15,000-100,000。 二氧化硅与聚乙烯醇的重量比为3:1以上,优选为5:1〜40:1。 润湿剂优选为非离子型。 组合物的水性载体介质可以包含至多20重量%的水混溶性低沸点溶剂如乙醇。

    Bonding agent for sheet-formed fibre products
    10.
    发明授权
    Bonding agent for sheet-formed fibre products 失效
    片状纤维制品用粘合剂

    公开(公告)号:US4213885A

    公开(公告)日:1980-07-22

    申请号:US916177

    申请日:1978-06-16

    IPC分类号: D21H17/34 C08L33/14

    CPC分类号: D21H17/34

    摘要: Composition and sheet-formed fibre products from fibrous material and bonding agent containing certain emulsion polymerized polymers of hydrophobic monomer being styrene, or 2-ethylhexyl acrylate or butyl acrylate or mixtures; hydrophilic monomer being acrylamide, or methacrylamide or acrylonitrile, or 2-hydroxyethyl methacrylate, or vinylpyrrolidone or mixtures, and a cation-active charged monomer.

    摘要翻译: 含纤维材料的组合物和片状纤维制品以及含有疏水性单体的一些乳液聚合聚合物的苯乙烯或丙烯酸2-乙基己酯或丙烯酸丁酯或其混合物的粘合剂; 亲水单体为丙烯酰胺或甲基丙烯酰胺或丙烯腈,或甲基丙烯酸2-羟乙酯,或乙烯基吡咯烷酮或其混合物,以及阳离子活性带电单体。