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    Acid-curable fluoride-containing no-bake foundry resins
    3.
    发明授权
    Acid-curable fluoride-containing no-bake foundry resins 失效
    含酸可固化的含氟化物的无烘烤铸造树脂

    公开(公告)号：US4495316A

    公开(公告)日：1985-01-22

    申请号：US726032

    申请日：1976-09-23

    申请人： David R. Armbruster

    发明人： David R. Armbruster

    IPC分类号： C08L61/00 ,  B22C1/22 ,  C08G18/00 ,  C08G18/54 ,  C08K3/16 ,  C08K5/02 ,  C08L61/04 ,  C08L61/10

    CPC分类号： B22C1/2233 ,  C08K3/16

    摘要： A suspension or solution containing an acid-curable fluoride-containing resin which is useful in a foundry process is disclosed. The fluoride-containing resin is curable at room temperatures and above by the addition of a strong acid catalyst. The resin is preferably a phenolic resole resin or a furan-type resin. The fluoride-containing resins, when used in a foundry process are preferably admixed with a foundry sand and a strong acid catalyst. The coated sand is then shaped into the form of a foundry core and is allowed to cure at room temperature or above to a foundry core having excellent tensile strength.

    摘要翻译： 公开了一种在铸造工艺中有用的含有可酸固化的含氟树脂的悬浮液或溶液。 含氟树脂通过加入强酸催化剂在室温以上可固化。 树脂优选为酚醛树脂树脂或呋喃型树脂。 含氟树脂在铸造工艺中使用时优选与铸造砂和强酸催化剂混合。 然后将涂覆的砂形成铸造芯的形式，并允许其在室温或更高温度下固化成具有优异拉伸强度的铸造芯。

    Foundry core compositions
    4.
    发明授权
    Foundry core compositions 失效
    铸造核心组成

    公开(公告)号：US4487868A

    公开(公告)日：1984-12-11

    申请号：US497961

    申请日：1983-05-25

    申请人： David R. Armbruster ,  Luis R. Rodriguez

    发明人： David R. Armbruster ,  Luis R. Rodriguez

    IPC分类号： B22C1/22 ,  C08G16/02 ,  C08L1/28

    CPC分类号： B22C1/2233 ,  C08G16/0262

    摘要： A foundry core composition containing a rapid-curing furfuryl alcohol and phenolic resole resin system useful in the "hot-box" process is provided. This composition includes an acidic curing agent of low toxicity whose catalytic activity is enhanced by the presence of a water-soluble polymeric polyhydroxy compound.

    摘要翻译： 提供了一种含有快速固化糠醇和酚醛树脂树脂体系的铸造芯组合物，可用于“热箱”工艺。 该组合物包括低毒性的酸性固化剂，其催化活性通过水溶性聚合多羟基化合物的存在而增强。

    Curable composition and use thereof
    6.
    发明授权
    Curable composition and use thereof 失效
    可固化组合物及其用途

    公开(公告)号：US4464521A

    公开(公告)日：1984-08-07

    申请号：US464843

    申请日：1983-02-08

    申请人： Bruce A. Gruber

    发明人： Bruce A. Gruber

    IPC分类号： B22C1/22 ,  C08F24/00

    CPC分类号： B22C1/2233

    摘要： A composition which contains aggregate, certain epoxidized materials and/or prepolymers thereof, and an acidic catalyst; and use thereof.

    摘要翻译： 含有骨料，某些环氧化物质和/或其预聚物以及酸性催化剂的组合物; 及其用途。

    Catalysts and binder systems for manufacturing sand shapes
    9.
    发明授权
    Catalysts and binder systems for manufacturing sand shapes 失效
    用于制造砂形的催化剂和粘合剂体系

    公开(公告)号：US4317763A

    公开(公告)日：1982-03-02

    申请号：US132894

    申请日：1980-03-24

    申请人： James E. Menting

    发明人： James E. Menting

    IPC分类号： C08K5/42 ,  B22C1/22 ,  C08F4/00 ,  C08L59/00 ,  C08L61/00 ,  C08L61/04 ,  C08L71/00 ,  C08L71/02 ,  C08L61/06

    CPC分类号： C08L61/00 ,  B22C1/2233

    摘要： A catalyst material particularly useful in making core sand from which resin bound sand shapes are made. The preferred catalyst is a material comprising at least one salt made from a weak base and an acid from the group comprising lower aliphatic and aromatic sulfonic acids. The curable resin binder is preferably a furfuryl alcohol polymer or other furan-based material. The resin is preferably present in an amount of about 0.5% to about 5% based on the weight of sand, while the catalyst is present in an amount of about 5% to 40% by weight of the resin material. The catalyzed composition provides an excellent combination of working or bench life, rapid curing on a delayed action basis and favorable shape-imparting and holding properties in the formed sand shapes. Specifically preferred compositions include aluminum and copper phenol and toluene sulfonic acid salts.

    摘要翻译： 特别可用于制造形成树脂结合砂形状的芯砂的催化剂材料。 优选的催化剂是包含由弱碱制成的至少一种盐和包含低级脂族和芳族磺酸的酸的材料。 可固化树脂粘合剂优选为糠醇聚合物或其它呋喃基材料。 树脂优选以基于砂的重量计约0.5％至约5％的量存在，而催化剂以树脂材料的约5重量％至40重量％的量存在。 催化的组合物提供了工作或台架寿命的优异组合，在延迟作用基础上快速固化，并且在形成的砂形中具有良好的形状赋予和保持性能。 特别优选的组合物包括铝和铜苯酚和甲苯磺酸盐。

    Catalyst for increasing the tensile strength and core hardness of a sand mold or core
    10.
    发明授权
    Catalyst for increasing the tensile strength and core hardness of a sand mold or core 失效
    用于提高砂模或芯的抗拉强度和芯硬度的催化剂

    公开(公告)号：US4215012A

    公开(公告)日：1980-07-29

    申请号：US891137

    申请日：1978-03-28

    申请人： Khe-Bing J. Kho ,  Patrick H. Stewart

    发明人： Khe-Bing J. Kho ,  Patrick H. Stewart

    IPC分类号： B22C1/22 ,  C08K5/11 ,  C08L71/14 ,  C08G2/06

    CPC分类号： C08L71/14 ,  B22C1/2233 ,  C08K5/11

    摘要： The tensile strength and core hardness of a sand mold or core is increased by incorporating into a mixture of a thermosetting acid-hardenable resin and sand, a dialkyl ester of the formula:R.sub.1 OOC(CH.sub.2).sub.n COOR.sub.2wherein R.sub.1 and R.sub.2, which may be the same or different, are selected from alkyl of 1 to 20 carbon atoms and n is 2, 3 or 4. The ester may be added directly to the resin or sand, or in conjunction with the acid catalyst. Ferric chloride together with the dialkyl ester provides a sulfur-free catalyst for polymerization of the resin.

    摘要翻译： 砂模或芯的拉伸强度和芯硬度通过掺入热固性酸可硬化树脂和沙子的混合物而增加，后者是下式的二烷基酯：R1OOC（CH2）nCOOR2，其中R1和R2可以是 相同或不同，选自1至20个碳原子的烷基，n为2,3或4.该酯可直接加入到树脂或砂中，或与酸催化剂结合。 氯化铁与二烷基酯一起提供了一种用于树脂聚合的无硫催化剂。