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    Binding medium and ceramic shell composition for a precision casting-mold
    61.
    发明授权
    Binding medium and ceramic shell composition for a precision casting-mold 失效
    用于精密铸模的结合介质和陶瓷壳组成

    公开(公告)号：US4080214A

    公开(公告)日：1978-03-21

    申请号：US659559

    申请日：1976-02-19

    申请人： Bruno Wilhelm

    发明人： Bruno Wilhelm

    IPC分类号： C04B35/632 ,  B22C1/08 ,  B22C1/18 ,  B22C1/20 ,  B22C7/02 ,  B22C9/04 ,  B28B7/34

    CPC分类号： B22C1/205

    摘要： The binding medium employs a mixture of ethyl silicate, anhydrous solvent and organo-functional hydrophilic silicon compounds containing at least one carbon-fixed amino group. The binding medium is capable of absorbing humidity from the air to bring about hydrolysis. The binding medium is also capable of unlimited durability if stored in an air-free dry condition. A hydrophilic alcoholate of titanium may also be added to the mixture to improve hydrolysis and gelling. The binder is mixed with a refractory ceramic filler to form a ceramic shell composition.

    摘要翻译： 结合介质采用硅酸乙酯，无水溶剂和含有至少一个碳固定氨基的有机官能亲水硅化合物的混合物。 结合介质能够从空气中吸收湿气以引起水解。 如果在无空气干燥条件下储存，结合介质也具有无限的耐久性。 还可以将钛的亲水醇化物加入到混合物中以改善水解和胶凝。 将粘合剂与难熔陶瓷填料混合以形成陶瓷壳组合物。

    Method for producing hybrid binder for ceramic molds
    62.
    发明授权
    Method for producing hybrid binder for ceramic molds 失效
    用于生产陶瓷混合料的方法

    公开(公告)号：US3961968A

    公开(公告)日：1976-06-08

    申请号：US559191

    申请日：1975-03-17

    申请人： Wayne F. Wales

    发明人： Wayne F. Wales

    IPC分类号： B22C1/16 ,  B22C1/18 ,  B22C1/20 ,  C04B28/24 ,  B28B7/34 ,  B01J13/00

    CPC分类号： C04B28/24 ,  B22C1/167 ,  B22C1/186 ,  B22C1/205

    摘要： Methods of preparing Hybrid Silicate Binders are shown by admixing the following materials:1. a basic or acidic colloidal silica sol suspended in water or glycol ether;2. an organic silicate, such as ethyl silicate, hydrolyzed with water;3. a mineral acid of sufficient quantity to produce a final binder having a pH of 1 to 4; and4. the hybrid binder contains silica sol and organic silicates such that the ratio of weight contribution of SiO.sub.2 from organic compounds to weight contribution of SiO.sub.2 from colloidal silica sol is in the range between 0.09 to .9, in the final binder.That is, ##EQU1## The final binder preferably contains about 18%-21% SiO.sub.2. If basic silica sol is used it must be added to a mixture of the other ingredients.The preferred binder has a shelf-life exceeding nine months, it can be chemically polymerized or air-set and provides high binder strength and refractoriness.

    Process for producing a bonded particulate material
    63.
    发明授权
    Process for producing a bonded particulate material 失效
    粘结颗粒材料的制造方法

    公开(公告)号：US3920460A

    公开(公告)日：1975-11-18

    申请号：US43014874

    申请日：1974-01-02

    申请人： BOSTON FRANK J ,  NERY VICTOR W

    发明人： BOSTON FRANK J ,  NERY VICTOR W

    IPC分类号： B22C1/18 ,  B28B7/34

    CPC分类号： B22C1/188

    摘要： A process for binding particulate material such as sand in foundry operation wherein the binder consists of an aqueous alkali metal silicate. The particulate material and binder are mixed together with a catalytic agent consisting in combination of (a) diacetin and (b) triacetin and (c) ethylene glycol diacetate. This three-part catalytic agent, when applied under certain controlled conditions, has been found to lower initial indentation hardness of the bonded particulate material to be shaped and molded while providing for a longer ''''plastic'''' stage without increasing the desired set time which can be accurately predetermined.

    摘要翻译： 用于在铸造操作中结合颗粒材料如砂的方法，其中粘合剂由碱金属硅酸盐水溶液组成。 颗粒材料和粘合剂与由（a）二醋精和（b）三醋精组合的组合的催化剂和（c）乙二醇二乙酸酯组合在一起。 已经发现这种三部分催化剂在某些受控条件下使用时可以降低被成型和模制的粘合颗粒材料的初始压痕硬度，同时提供更长的“塑性”阶段，而不增加所需的设定时间， 准确预定。

    Bonded particulate material
    64.
    发明授权
    Bonded particulate material 失效
    粘结颗粒材料

    公开(公告)号：US3881947A

    公开(公告)日：1975-05-06

    申请号：US34679173

    申请日：1973-04-02

    申请人： FOSECO INT

    发明人： PALMER GRAHAM EASTWOOD

    IPC分类号： C04B35/632 ,  B22C1/10 ,  B22C1/18 ,  C04B35/16

    CPC分类号： B22C1/188

    摘要： Particulate material is bonded to coherent form by mixing together a major proportion of the particulate material, aqueous alkali metal silicate and a minor proportion of a hardener comprising a liquid polyhydric alcohol capable of forming a stable solution with the alkali metal silicate and a fully esterified ester of a polyhydric alcohol.

    摘要翻译： 通过将主要部分的颗粒材料，碱金属水合硅酸盐和少量的能够与碱金属硅酸盐和完全酯化的酯形成稳定溶液的液体多元醇的硬化剂混合在一起，使颗粒材料粘结成粘结形式 的多元醇。

    Fluorinated compounds containing functional groups
    68.
    发明授权
    Fluorinated compounds containing functional groups 失效
    含有功能组的氟化合物

    公开(公告)号：US3742013A

    公开(公告)日：1973-06-26

    申请号：US3742013D

    申请日：1969-07-31

    申请人： ICI LTD

    发明人： FIELDING HAROLD CROSBIE

    IPC分类号： B22C1/18 ,  C07C121/02 ,  C07C121/42

    CPC分类号： B22C1/188

    摘要： GROUPS ATTACHED TO THE OLIGOMER RESIDUE. Derivatives containing the first three of these groups are made by contacting an oligomer with anhydrous gaseous ammonia in a solvent medium or by heating with a concentrated aqueous solution of ammonia. Those containing NHNH2 groups are made by reactions between oligomer and hydrazine. The derivatives may be converted into highly fluorinated nitriles which can be reduced to amines and quaternised with alkyl halides to yield cationic surfactants.

    Derivatives of oligomers of tetrafluoroethylene and of hexafluoropropene, contain one or more

    摘要翻译： 四氟乙烯和六氟丙烯低聚物的衍生物含有一个或多个连接到低聚物残留物的组合。 通过使低聚物与无水气态氨在溶剂介质中接触或通过用浓氨水加热来制备含有这些基团前三个的衍生物。 含有NHNH 2基团的那些是由低聚物和肼之间的反应制成的。 衍生物可以转化成高度氟化的腈，其可以还原成胺并用烷基卤季铵化以产生阳离子表面活性剂。