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    Process for making mixtures of sodium polyphosphates and sodium sulfate
    2.
    发明授权
    Process for making mixtures of sodium polyphosphates and sodium sulfate 失效
    制备聚磷酸钠和硫酸钠的混合物的方法

    公开(公告)号：US3684724A

    公开(公告)日：1972-08-15

    申请号：US3684724D

    申请日：1970-04-20

    申请人： STAUFFER CHEMICAL CO

    发明人： DYER JAMES N ,  POST LEO B ,  ROSEN HERBERT J

    IPC分类号： C01B25/41 ,  C11D3/00 ,  C11D3/06 ,  C01B25/38 ,  C11D7/16

    CPC分类号： C11D3/062 ,  C01B25/412 ,  C11D3/046

    摘要： MIXTURES OF SODIUM SULFATE AND SODIUM POLYPHOSPHATES, PARTICULARLY, SODIUM TRIPOLYPHOSPHATES ARE PREPARED IN LOW BULK DENSITY, HIGH RELATIVELY NON-FRANGIBLE, GRANULAR YIELDS BY SPRAY DRYING AN AQUEOUS SOLUTION OF MONOSODIUM/DISODIUM ORTHOPHOSPHATE SALTS HAVING AN NA2O:P2O5 RATIO OF FROM 1 TO 2, AND SODIUM IN COMBINATIONS OF 10% TO 90%, HYDRATING THE SPRAY DRIED PRODUCT OR THE FINES TO A LO1 OF BETWEEN ABOUT 10% AND ABOUT 50% AND INTERMOLECULARLY DEHYDRATING THE HYDRATED PRODUCT IN A FLUIDIZED CONVERTER AT A TEMPERATURE OF BETWEEN ABOUT 200*C. AND 500*C. TO PROVIDE THE DESIRED PRODUCT. THE PRODUCT OF THE PROCESS IS USEFUL AS A DETERGENT BUILDER.

    Process for making polyvinyl chloride processing aid involving cooling step in acrylate graft polymerization of polyvinyl chloride
    4.
    发明授权
    Process for making polyvinyl chloride processing aid involving cooling step in acrylate graft polymerization of polyvinyl chloride 失效
    涉及聚氯乙烯丙烯酸酯接枝聚合中的冷却步骤的聚氯乙烯加工助剂的方法

    公开(公告)号：US3919137A

    公开(公告)日：1975-11-11

    申请号：US36215973

    申请日：1973-05-21

    申请人： STAUFFER CHEMICAL CO

    发明人： DYER JAMES N ,  YU ARTHUR J

    IPC分类号： C08F214/00 ,  C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F2/38 ,  C08F2/44 ,  C08F14/00 ,  C08F214/06 ,  C08F259/00 ,  C08F259/04 ,  C08L1/00 ,  C08L23/00 ,  C08L27/00 ,  C08L51/00 ,  C08L51/02 ,  C08L101/00 ,  C08F114/02 ,  C08F114/16

    CPC分类号： C08F259/04 ,  C08F220/14

    摘要： A process is disclosed for preparing a polyacrylate-modified polyvinyl chloride processing aid for polyvinyl chloride by sequentially polymerizing the vinyl chloride and the desired acrylate ester monomer. Thus, a conventional vinyl chloride suspension polymerization is conducted at a controlled rate of agitation and in the presence of a specified concentration of an alkyl, hydroxyalkyl or carboxyalkyl modified cellulose suspending agent and is then halted at or near its completion; unreacted vinyl chloride monomer is removed, the suspension of polyvinyl chloride particles is cooled, a minor proportion of an acrylate ester monomer, e.g., methyl methacrylate, is then added with a fresh supply of a free radical initiating catalyst to the cooled suspension, the cooling being sufficient to retard polymerization of the acrylate, and polymerization is then resumed by heating the suspension and continued until the acrylate ester monomer polymerizes in and/or on the particles of the previously polymerized polyvinyl chloride. The polyacrylate-modified PVC thereby recovered is an effective aid for processing conventional PVC, or it can be processed per se since it is suitable for calendering or extruding.

    摘要翻译： 公开了通过顺序聚合氯乙烯和所需的丙烯酸酯单体制备用于聚氯乙烯的聚丙烯酸酯改性的聚氯乙烯加工助剂的方法。 因此，常规的氯乙烯悬浮液聚合以受控的搅拌速率和在特定浓度的烷基，羟烷基或羧烷基改性的纤维素悬浮剂的存在下进行，然后在其完成或接近完成时停止; 去除未反应的氯乙烯单体，将聚氯乙烯颗粒的悬浮液冷却，然后加入少量的丙烯酸酯单体，例如甲基丙烯酸甲酯，向冷却的悬浮液中加入新鲜的自由基引发催化剂，冷却 足以阻止丙烯酸酯的聚合，然后通过加热悬浮液并继续进行聚合，直到丙烯酸酯单体在先前聚合的聚氯乙烯的颗粒中和/或上聚合。 由此回收的聚丙烯酸酯改性PVC是用于加工常规PVC的有效助剂，或者它可以被加工本身，因为它适用于压延或挤出。

    Low bulk density sodium polyphosphates
    5.
    发明授权
    Low bulk density sodium polyphosphates 失效
    低密度密度聚磷酸钠

    公开(公告)号：US3650685A

    公开(公告)日：1972-03-21

    申请号：US3650685D

    申请日：1969-09-12

    申请人： STAUFFER CHEMICAL CO

    发明人： DYER JAMES N ,  POST LEO B ,  ROSEN HERBERT J

    IPC分类号： C01B25/41 ,  C01B25/30 ,  C01B25/39 ,  C01B25/38

    CPC分类号： C01B25/395 ,  C01B25/308

    摘要： Sodium polyphosphates and particularly sodium tripolyphosphates which generally find use as detergent builders are prepared in low bulk density, high relatively non-frangible granular yields by spray drying an aqueous solution of monosodium/disodium orthophosphate salts having an NaO:P2O5 ratio of from 1 to 2, hydrating the spray dried product or the fines to a LOI of between about 18% and about 25% and intermolecularly dehydrating the hydrated product in a fluidized converter at a temperature of between about 200* C. and 500* C. to provide the desired product.

    摘要翻译： 通常用于洗涤剂助洗剂的多磷酸钠和特别是三聚磷酸钠通过喷雾干燥NaO:P2O5比为1至2的正/磷酸二钠/二钠水溶液，以低堆积密度，高相对不易碎的颗粒产率制备 将喷雾干燥产物或细粉水合至约18％至约25％的LOI，并在约200℃至500℃的温度下在流化转化器中使水合产物分水解脱水以提供所需的 产品。