Solutions of isocyanurate polyisocyanates in coatings solvents and a
process for their production
    2.
    发明授权
    Solutions of isocyanurate polyisocyanates in coatings solvents and a process for their production 失效
    异氰脲酸酯多异氰酸酯在涂料溶剂中的溶液及其制备方法

    公开(公告)号:US5064960A

    公开(公告)日:1991-11-12

    申请号:US571465

    申请日:1990-08-22

    摘要: The present invention relates to a process for the preparation of a composition containing an isocyanurate polyisocyanate dissolved in a solvent inert to isocyanate groups bya) reacting 2.5 to 7% of the isocyanate groups of a starting diisocyanate based on 2,4-diisocyanatotoluene or a mixture of 2,4-diisocyanatotoluene and 2,6-diisocyanatotoluene with a monohydric alcohol corresponding to the formula ##STR1## wherein R.sub.1 is an aliphatic or cycloaliphatic C.sub.6-18 hydrocarbon radical which may be olefinically unsaturated,R.sub.2 is hydrogen or a methyl group, andn is 0 or an integer from 1 to 3,b) adding a sufficient amount of an organic solvent which is inert to isocyanate groups to form a 30 to 70% solution of the urethanized diisocyanate either before, during or after step a),c) subsequently partially trimerizing the remaining isocyanate groups of said urethanized diisocyanate in the presence of a catalyst which accelerates the trimerization of isocyanate groups andd) terminating the trimerization reaction when the content of unreacted diisocyanotoluene is less than 0.5% by weight by the addition of a catalyst poison.The present invention also relates to the solutions of isocyanurate polyisocyanates obtained by this process.

    摘要翻译: 本发明涉及一种制备含有异氰脲酸酯多异氰酸酯的组合物的方法,所述组合物溶解在对异氰酸酯基团惰性的溶剂中,通过以下步骤:a)使2.5至7%的起始二异氰酸酯基于2,4-二异氰酸根合甲苯或 2,4-二异氰酸根合甲苯和2,6-二异氰酸基甲苯与一种对应于式R 1的一元醇的混合物,其中R 1是可以是烯属不饱和的脂族或脂环族C 6-18烃基,R 2是氢或甲基 ,n为0或1〜3的整数,b)在步骤a)之前,期间或之后,加入足够量的异氰酸酯基惰性的有机溶剂,形成氨基甲酸酯化二异氰酸酯的30〜70% c)随后在催化剂存在下将所述氨基甲酸酯化二异氰酸酯的剩余异氰酸酯基部分三聚化,催化剂加速异氰酸酯基团的三聚化,和d)终止 当未反应的二异氰酰甲苯的含量通过加入催化剂毒物小于0.5重量%时,三聚反应。 本发明还涉及通过该方法获得的异氰脲酸酯多异氰酸酯的溶液。

    Process for the preparation of (meth)acrylic acid esters and their use
    3.
    发明授权
    Process for the preparation of (meth)acrylic acid esters and their use 失效
    制备(甲基)丙烯酸酯的方法及其用途

    公开(公告)号:US4748269A

    公开(公告)日:1988-05-31

    申请号:US851742

    申请日:1986-04-14

    CPC分类号: C07C69/54 C07C67/08 C07C67/60

    摘要: (Meth)acrylic acid esters can be prepared by acid-catalyzed reaction of (meth)acrylic acid with alcohols in a water-immiscible solvent. After the esterification, the reaction mixture is washed with aqueous solutions having an alkaline reaction and then reacted at elevated temperature with carbodiimides. Acid numbers below 0.5 (mg of KOH/g of substance) are obtained in this way. (Meth)acrylic acid esters are used, for example, as reactive diluents or as comonomers.

    摘要翻译: (甲基)丙烯酸酯可以通过(甲基)丙烯酸与醇在水不混溶溶剂中的酸催化反应来制备。 酯化后,反应混合物用碱性反应的水溶液洗涤,然后在高温下与碳二亚胺反应。 以这种方式获得酸值低于0.5(KOH / g的物质)。 (甲基)丙烯酸酯用作例如作为反应性稀释剂或共聚单体。

    Binder mixtures for two-component polyurethane coating compositions
    4.
    发明授权
    Binder mixtures for two-component polyurethane coating compositions 失效
    用于双组分聚氨酯涂料组合物的粘合剂混合物

    公开(公告)号:US06001931A

    公开(公告)日:1999-12-14

    申请号:US927445

    申请日:1992-08-10

    摘要: The present invention relates to binder mixtures for two-component polyurethane coating compositions which dry at room temperature and containa) a polyisocyanate component,b) a hydroxy-functional polyacrylate component based on a mixture of at least two hydroxyl group-containing poly(meth)acrylate resinsi) having a molecular weight (M.sub.n) of 1000 to 100,000,ii) having an at least bimodal molecular weight distribution,iii) prepared by radical copolymerization of olefinically unsaturated monomers in a solvent using monomer mixtures containing less than 50% by weight of monomers carrying hydroxyl groups andiv) wherein the hydroxyl group content of the component having the lowest molecular weight is at least 1.5 times the hydroxyl group content of the component having the highest molecular weight,c) optionally reactive diluents,wherein components a) and b) are present in an amount which corresponds to an NCO/OH equivalent ratio of 0.2:1 to 5:1.

    摘要翻译: 本发明涉及用于双组分聚氨酯涂料组合物的粘合剂混合物,其在室温下干燥并含有a)多异氰酸酯组分,b)基于至少两个含羟基的聚(甲基)丙烯酸酯的混合物的羟基官能聚丙烯酸酯组分 )丙烯酸酯树脂i)具有1000至100,000的分子量(Mn),ii)具有至少双峰分子量分布,iii)通过烯烃不饱和单体在溶剂中使用包含小于50%的单体混合物的单体混合物 携带羟基的单体的重量和iv)其中具有最低分子量的组分的羟基含量为具有最高分子量的组分的羟基含量的至少1.5倍,c)任选的反应性稀释剂,其中组分a) 和b)以对应于0.2:1至5:1的NCO / OH当量比的量存在。

    Moulding compositions of graft polycarbonate and graft polymer rubbers
    6.
    发明授权
    Moulding compositions of graft polycarbonate and graft polymer rubbers 失效
    接枝聚碳酸酯和接枝聚合物橡胶的成型组合物

    公开(公告)号:US3991009A

    公开(公告)日:1976-11-09

    申请号:US459604

    申请日:1974-04-10

    摘要: Thermoplastic moulding compositions of1. 70 - 20 % by weight of graft polycarbonates whose graft stock is a vinyl polymer with a molecular weight of from 10,000 to 100,000, containing from 3 to 10 side chains attached by carbon, each of which contains a hydroxyphenyl group, on which aromatic polycarbonate chains are condensed, and2. 30 - 80 % by weight of graft polymer rubbers obtained by polymerizing a mixture of2.1. 50 - 90 % by weight styrene, .alpha.-methylstyrene, methylmethacrylate or mixtures thereof, and2.2. 10 - 50 % by weight acrylonitrile, methacrylonitrile, methylmethacrylate or mixtures thereof on a diene or acrylate rubber.

    摘要翻译: 热塑性成型组合物的重量百分比为70-20%,聚碳酸酯的重量为聚碳酸酯,分子量为10,000至100,000的乙烯基聚合物,含有碳原子数为3〜10个的链,每个碳链均含有羟基苯基 ,其中芳族聚碳酸酯链是稠合的,和2.通过聚合2.1的混合物获得的聚合物橡胶重量的30-80%。 50-90%重量苯乙烯,α-甲基苯乙烯,甲基丙烯酸甲酯或其混合物,和2.2。 10 - 50%的重量丙烯腈,甲基丙烯酸甲酯,甲基丙烯酸甲酯或其混合物在二烯或丙烯酸酯橡胶上。