Lignin modified binding agents
    5.
    发明授权
    Lignin modified binding agents 失效
    木质素修饰的粘合剂

    公开(公告)号:US5260405A

    公开(公告)日:1993-11-09

    申请号:US966298

    申请日:1992-10-26

    摘要: A binding agent for molding compositions and molded bodies produced by reacting a low molecular weight lignin from the Organosolv process with phenol in a weight ratio of 1:20 to 3:1 at 100.degree. to 180.degree. C., adjusting the pH to an acidic value and condensing the mixture with 0.2 to 0.9 moles of formaldehyde per mole of phenol at 60.degree. to 120.degree. C. to form the binding agent useful for producing curable molding compositions, high-temperature molding compositions, refractory products, textile fleeces and friction coatings as well as carbon materials.

    摘要翻译: 通过使有机溶剂法中的低分子量木质素与苯酚以1:20至3:1的重量比在100-180℃下反应制备成型组合物和成型体的粘合剂,将pH调节至酸性 并在60至120℃下将混合物与每摩尔苯酚0.2至0.9摩尔甲醛缩合以形成可用于生产可固化模塑组合物,高温模塑组合物,耐火产品,纺织品和摩擦涂层的粘合剂 以及碳材料。

    Lignin modified binding agents
    6.
    发明授权
    Lignin modified binding agents 失效
    木质素修饰的粘合剂

    公开(公告)号:US5300593A

    公开(公告)日:1994-04-05

    申请号:US108111

    申请日:1993-08-17

    摘要: A binding agent for molding compositions and molded bodies produced by reacting a low molecular weight lignin from the Organosolv process with phenol in a weight ratio of 1:20 to 3:1 at 100.degree. to 180.degree. C., adjusting the pH to an acidic value and condensing the mixture with 0.2 to 0.9 moles of formaldehyde per mole of phenol at 60.degree. to 120.degree. C. to form the binding agent useful for producing curable molding compositions, high-temperature molding compositions, refractory products, textile fleeces and friction coatings as well as carbon materials.

    摘要翻译: 通过使有机溶胶工艺中的低分子量木质素与苯酚以1:20至3:1的重量比在100至180℃下反应制备模塑组合物和模塑体的粘合剂,将pH调节至酸性 在60至120℃下将混合物与每摩尔苯酚0.2至0.9摩尔甲醛缩合,形成可用于生产可固化模塑组合物,高温模塑组合物,耐火产品,纺织品和摩擦涂层的粘合剂 以及碳材料。

    Thermosetting plastic powder mixtures
    8.
    发明授权
    Thermosetting plastic powder mixtures 失效
    热固性塑料粉末混合物

    公开(公告)号:US5399606A

    公开(公告)日:1995-03-21

    申请号:US138350

    申请日:1993-10-18

    CPC分类号: B24D3/28 B24D3/344

    摘要: A homogenous non-tacky thermosetting plastic powder mixture formed by mixing component A comprising a solid phenol novolac resin powder and a hardener containing a small amount of an oil-like substance liquid at room temperature with component B comprising a liquid resol, fillers and optionally additives which when containing an abrasive are useful for the production of filler-containing shaped elements or resin-bonded grinding elements.

    摘要翻译: 通过将包含固体酚醛清漆树脂粉末的组分A和在室温下含有少量油状物质的液体的固化剂与包含液体甲阶酚醛树脂,填料和任选添加剂的组分B混合而形成的均匀非粘性热固性塑料粉末混合物 当含有研磨剂时,其可用于生产含填料的成形元件或树脂粘合的研磨元件。

    Novel molding materials
    10.
    发明授权
    Novel molding materials 失效
    新型成型材料

    公开(公告)号:US5043365A

    公开(公告)日:1991-08-27

    申请号:US407232

    申请日:1989-09-14

    IPC分类号: B22C1/00 C08G18/18 C08G18/54

    CPC分类号: B22C1/00 C08G18/542

    摘要: A granular molding material with a binder comprising a phenol novolac and a polyisocyanate which hardens upon addition of amine catalysts wherein the molar ratio of phenol to formaldehyde in the novolac is 1:0.25 to 1:0.5 and has the formula ##STR1## wherein R, R' and R" are individually selected from the group consisting of hydrogen, alkyl of 1 to 12 carbon atoms, hydroxy, cycloalkyl of 3 to 12 carbon atoms and an anellated ring and X is an integer from 0 to 4 or >4 with the percent molar distribution based on X is as follows:______________________________________ when X = 0: 20-55% X = 1: 15-30% X = 2: 10-30% X = 3: 0-50% X .gtoreq. 4: 0-2.5% ______________________________________ for the production of improved foundry cores and molds.

    摘要翻译: 一种具有粘合剂的粒状模制材料,其包含苯酚酚醛清漆和多异氰酸酯,其在加入胺催化剂时硬化,其中酚醛与酚醛清漆之间的摩尔比为1:0.25至1:0.5,并具有式“ R'和R“分别选自氢,1至12个碳原子的烷基,羟基,3至12个碳原子的环烷基和一个安定的环,X是0-4或> 4的整数, 基于X的摩尔分数百分比如下:当X = 0:20-55%-X = 1:15-30%-X = 2:10-30%-X = 3:0-50%-X > / = 4:0-2.5% - 用于生产改进的铸造芯和模具。