Polyurethanes prepated using poly(silyldiamines)
    5.
    发明授权
    Polyurethanes prepated using poly(silyldiamines) 失效
    使用聚(甲硅烷基二胺)

    公开(公告)号:US4448939A

    公开(公告)日:1984-05-15

    申请号:US403459

    申请日:1982-07-30

    CPC分类号: C08G18/837 C08G18/6469

    摘要: A composition for preparing polyurethanes comprising an organic polyisocyanate; a poly(silyldiamine) of the unit formula ##STR1## wherein the grouping ##STR2## is a divalent organic radical terminated by two nitrogen atoms with R being a divalent organic moiety, or a divalent alicyclic radical in which R and R.sup.1 with the two nitrogens form a cyclic diamine structure, R.sup.1 is hydrogen or a monovalent hydrocarbon, R.sup.2 is a monovalent hydrocarbon, and n is an integer greater than 1; and a polyol. When poly(silyldiamines) of the above formula are reacted with a polyisocyanate prepolymer and a polymeric polyol, elastomeric polyurethanes having good elastomeric properties are obtained.

    摘要翻译: 一种用于制备包含有机多异氰酸酯的聚氨酯的组合物; 单元式“IMAGE”的聚(甲硅烷基二胺),其中分组“IMAGE”是由两个氮原子封端的二价有机基团,其中R是二价有机部分,或二价脂环族基团,其中R和R 1与两个氮原子 形成环状二胺结构,R1为氢或一价烃,R2为单价烃,n为大于1的整数; 和多元醇。 当上式的聚(甲硅烷基二胺)与多异氰酸酯预聚物和聚合多元醇反应时,获得具有良好弹性性质的弹性体聚氨酯。

    Process for the production of alkali metal-cellulose-silicates and their
reaction products
    7.
    发明授权
    Process for the production of alkali metal-cellulose-silicates and their reaction products 失效
    碱金属纤维素硅酸盐及其反应产物的生产工艺

    公开(公告)号:US4247657A

    公开(公告)日:1981-01-27

    申请号:US112626

    申请日:1980-01-16

    申请人: David Blount

    发明人: David Blount

    摘要: Small particles of cellulose-containing plants, fine granular oxidated, silicon compounds and an alkali metal hydroxide are mixed, then heated to 150.degree. C. to 220.degree. C. while agitating until the plant particles soften or melt, thereby producing an alkali metal cellulose silicate condensation product.

    摘要翻译: 将含有纤维素的植物,细粒状氧化物,硅化合物和碱金属氢氧化物的小颗粒混合,然后加热至150℃至220℃,同时搅拌直至植物颗粒软化或熔化,从而产生碱金属纤维素 硅酸盐缩合产物。

    Epoxy composite resins and sol-gel compositions thereof

    公开(公告)号:US09873759B2

    公开(公告)日:2018-01-23

    申请号:US14951123

    申请日:2015-11-24

    摘要: Composite resins produced from chemical reactions among a polyglycol epoxide liquid epoxy resin, an aminosilane, tri- and/or tetra-alkoxysilanes and an isocyanate. The hybrid compositions are prepared by an in situ sol-gel process where components of the composition are mixed together sequentially. The composite resins are formed by a coupling reaction between the epoxide groups of the epoxy resin and the amino groups of the aminosilane. The silanes are hydrolyzed to form silanol groups which then undergo polycondensation to form an inorganic polymeric network of an intermediate. Finally, urethane moieties are introduced to the composite resins when unreacted hydroxyl groups from the intermediate react with the isocyanate. These composite resins are evaluated as protective coatings of mild steel substrates, including mechanical strength, anticorrosiveness in a saline medium, and adhesiveness to the mild steel substrates.