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    • 21. 发明授权
    • Condensation products based on amino-s-triazines and the use thereof
    • 基于氨基-s-三嗪的缩合产物及其用途
    • US06555683B1
    • 2003-04-29
    • US08930839
    • 1997-09-29
    • Josef WeichmannAloisia StadlerAlfred Kern
    • Josef WeichmannAloisia StadlerAlfred Kern
    • C07D25164
    • C04B24/223C04B2103/30C08G12/40
    • In the proposed condensation product based on amino-s-triazines with at least two amino groups, formaldehyde and sulphite, the molar ratio of amino-s-triazine, formaldehyde and sulphite is 1:2.5-6.0:1.51-2.0 and the formiate content is less than 0.3 wt %. The condensation product is obtained by a) heating amino-s-triazine, formaldehyde and a sulphite in the molar ratio 1:2.5-6.0:1.51-2.0 in an aqueous solution at a temperature of 60-90° C. and a pH level of between 9.0 and 13.0 until the sulphite can no longer be detected; b) continuing the condensation at a pH level of between 3.0 and 6.5 and a temperature of 60-80° C. until the condensation product has a viscosity of 5-50 mm/s at 80° C.; and c) adjusting the pH level of the condensation product to 7.5-12.0 or carrying out thermal secondary treatment at a pH level of >10.0 and a temperature of 60-100° C. The product can be used as an additive for inorganic binders such as cement.
    • 在提出的基于具有至少两个氨基的氨基-s-三嗪,甲醛和亚硫酸盐的缩合产物中,氨基-s-三嗪,甲醛和亚硫酸盐的摩尔比为1:2.5-6.0:1.51-2.0,甲酸含量 小于0.3重量%。 缩合产物通过以下步骤获得:a)在60-90℃的温度下,在水溶液中加热氨基-s-三嗪,甲醛和摩尔比为1:2.5-6.0:1.51-2.0的亚硫酸盐,pH值 在9.0和13.0之间,直到亚硫酸盐不能再被检出; b)在3.0至6.5的pH水平和60-80℃的温度下继续冷凝,直到缩合产物在80℃下的粘度为5-50mm / s; 和c)将缩合产物的pH值调节至7.5-12.0,或在pH值> 10.0,温度为60-100℃下进行热二次处理。该产品可用作无机粘合剂的添加剂 作为水泥。
    • 26. 发明授权
    • Water-soluble graft polymers
    • 水溶性接枝聚合物
    • US5739212A
    • 1998-04-14
    • US545546
    • 1995-10-19
    • Konrad WutzJosef WeichmannAlfred KernHans-Gunter Rosenbauer
    • Konrad WutzJosef WeichmannAlfred KernHans-Gunter Rosenbauer
    • B01F17/00C04B24/16C04B24/26C04B24/32C08F8/00C08F283/06C09K8/24C08G63/91
    • C04B24/267B01F17/0028C04B24/166C08F283/06C08F8/00C09K8/24C04B2103/408
    • Water-soluble graft polymers are described which have been produced by a) radical grafting of a polyalkylene oxide of the general formula I ##STR1## in which R.sup.1 =--H, --C.sub.n H.sub.2n+1, --C.sub.6 H.sub.4 --C.sub.n H.sub.2n+1, ##STR2## --(CH--R.sup.2).sub.m NHR.sup.2, --(CH--R.sup.2).sub.m OH, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5 R.sup.2 =--H, --CH.sub.3, --C.sub.2 H.sub.5 R.sup.3 =--H, --C.sub.n H.sub.2n+1, --C.sub.m H.sub.2m --SO.sub.3 Na, --(CH--R.sup.2).sub.m NHR.sup.2, --(CH--R.sup.2).sub.m OH, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5 R.sup.4 =--H, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5 R.sup.5 =--C.sub.m H.sub.2m+1, --C.sub.6 H.sub.5, --(CH--R.sup.2).sub.m --COOH, --C.sub.6 H.sub.4 --COOH n denotes 1-18, m denotes 1-5, x denotes 2-200, y denotes 0 or 1 with an ethylenically unsaturated mono or dicarboxylic acid or their anhydride and subsequently b) derivatising with a primary or secondary amine and/or alcohol. These graft polymers are suitable as dispersants for inorganic binding agents containing water such as e.g. cement, gypsum, anhydrite.
    • 描述了通过以下方法制备的水溶性接枝聚合物:a)通式I的聚环氧烷的自由基接枝,其中R1 = -H,-CnH2n + 1,-C6H4-CnH2n + 1,< IMAGE> - (CH-R2)mNHR2, - (CH-R2)mOH, - (CH-R2)m -COOH,-CO-R5R2 = -H,-CH3,-C2H5 R3 = -H,-CnH2n + (CH-R2)mOH, - (CH-R2)mOH, - (CH-R2)m-COOH,-CO-R5 R4 = -H, - (CH-R2)m -COOH, -CO-R5 R5 = -CmH2m + 1,-C6H5, - (CH-R2)m-COOH,-C6H4-COOH n表示1-18,m表示1-5,x表示2-200,y表示0或 1与烯键式不饱和单或二羧酸或其酸酐反应,随后b)用伯或仲胺和/或醇衍生。 这些接枝聚合物适合作为含水的无机结合剂的分散剂,例如水。 水泥,石膏,无水石膏。