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1.发明授权
公开(公告)号：US5071945A
公开(公告)日：1991-12-10
申请号：US561353
申请日：1990-08-01
摘要： A process for the production of sulphonic acid group-containing condensation products based on amino-s-triazines with at least two amino groups and formaldehyde with a low content of free formaldehyde, whereina) an amino-s-triazine, formaldehyde and sulphite is condensed in a mole ratio of 1:1.3 to 6:0.3 to 1.5 in aqueous solution at a pH value of 9.0 to 12.0 and at a temperature of 50.degree. to 90.degree. C. until sulphite is no longer detectable.b) subsequently, further condensation is carried out at a pH value of 2.0 to 7.0 and at a temperature of 50.degree. to 90.degree. C. until the viscosity of the solution is 4 to 1000 mm.sup.2 /s at 80.degree. C. andc) thereafter the condensation product is subjected to an after-treatment in a strongly alkaline range of pH.sqroot.11.0 and at an elevated temperature.
摘要翻译： 一种基于具有至少两个氨基的氨基-s-三嗪和游离甲醛含量低的甲醛生产含磺酸基的缩合产物的方法，其中a）氨基-s-三嗪，甲醛和亚硫酸盐是 在9.0至12.0的pH值和50-90℃的温度下，以1：1.3至6：0.3至1.5的摩尔比浓缩，直到亚硫酸盐不再可检测。 b）随后，在2.0至7.0的pH值和在50至90℃的温度下进行进一步的缩合，直到80℃下溶液的粘度为4至1000mm 2 / s，c） 然后在pH 2ROOT 11.0的强碱性范围内和在升高的温度下对缩合产物进行后处理。
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公开(公告)号：US5739212A
公开(公告)日：1998-04-14
申请号：US545546
申请日：1995-10-19
IPC分类号： B01F17/00 , C04B24/16 , C04B24/26 , C04B24/32 , C08F8/00 , C08F283/06 , C09K8/24 , C08G63/91
CPC分类号： C04B24/267 , B01F17/0028 , C04B24/166 , C08F283/06 , C08F8/00 , C09K8/24 , C04B2103/408
摘要： 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.
摘要翻译： 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，＆lt; IMAGE＆gt; - （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。
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公开(公告)号：US4284433A
公开(公告)日：1981-08-18
申请号：US29816
申请日：1979-04-13
IPC分类号： B01J2/00 , C04B20/10 , C04B22/00 , C04B24/00 , C04B24/18 , C04B24/22 , C04B24/26 , C04B24/30 , C04B40/06 , C04B31/30 , C08H5/04 , C08J3/20 , C08K3/06
摘要： Water-hardening binding agent such as concrete, mortar, cement and the like are modified with a solid additive in the form of aggregates consisting of fine particle having a grain size of from 0.1 to 10 mm, preferably in pelletized or pressed grain form. These additives have an adjustable rate of dissolution and permit controlling the speed and manner of hardening of said water-hardening binding agent.
摘要翻译： 水硬化粘合剂如混凝土，砂浆，水泥等用固体添加剂改性，其形式为由粒径为0.1至10mm的细颗粒组成的聚集体，优选为颗粒状或压制颗粒形式。 这些添加剂具有可调节的溶解速度并且允许控制所述水硬化粘合剂的硬化速度和方式。
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公开(公告)号：US4126470A
公开(公告)日：1978-11-21
申请号：US832667
申请日：1977-09-12
CPC分类号： C04B28/02
摘要： A light concrete prepared from a mixture of Portland cement, cellular aggregate, and an admixture including a melamine-formaldehyde condensate carrying sulfo groups for reducing the need for mixing water, an alkaline earth metal stearate as a water repelling material, and polyethyleneglycol has greater mechanical strength at lower density than an otherwise identical concrete containing only two ingredients of the admixture.
摘要翻译： 由波特兰水泥，细胞聚集体和包含三聚氰胺 - 甲醛缩合物的混合物混合物制备的轻混凝土，用于减少需要混合水的磺胺基，作为排斥材料的碱土金属硬脂酸酯和聚乙二醇具有更大的机械 强度低于仅含有两种混合物成分的混合物。
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5.发明授权Process of preparing aqueous solutions of melamine-formaldehyde condensation products having anionic sulfo groups 失效制备具有阴离子磺基的三聚氰胺 - 甲醛缩合产物的水溶液的方法
公开(公告)号：US3985696A
公开(公告)日：1976-10-12
申请号：US523555
申请日：1974-11-14
摘要： Aqueous solutions of melamine-formaldehyde and melamine-urea-formaldehyde condensation products having anionic sulfo groups in concentrations as high as 50% by weight may be prepared in a three-stage process. In the first stage, melamine or a mixture of melamine with up to 40 mole-% urea, formaldehyde, and an alkali metal sulfite are condensed in aqueous solution at 60.degree.-80.degree.C and pH 10-13 until the solution is free from readily detectable amounts of sulfite. In the second stage, condensation is continued at pH 3.0-4.5 for 30 to 90 minutes. In the third stage, a temperature of 70.degree. to 95.degree.C and a pH of 7.5 to 9.0 are maintained until a sample of the solution, when diluted to 20% solids by weight, has a viscosity of 5 to 40 centipoises at 20.degree.C.
摘要翻译： 具有浓度高达50重量％的阴离子磺基的三聚氰胺 - 甲醛和三聚氰胺 - 脲 - 甲醛缩合产物的水溶液可以在三步法中制备。 在第一阶段，三聚氰胺或三聚氰胺与高达40摩尔％的尿素，甲醛和碱金属亚硫酸盐的混合物在60℃-80℃和pH 10-13的水溶液中冷凝直到溶液不含 容易检测量的亚硫酸盐。 在第二阶段，在pH3.0-4.5下继续冷凝30至90分钟。 在第三阶段中，保持70℃至95℃的温度和7.5至9.0的pH，直到溶液样品稀释至20重量％固体时，在20℃下的粘度为5至40厘泊 C。
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