Agent for grinding lime to augment its reactivity
    3.
    发明授权
    Agent for grinding lime to augment its reactivity 失效
    用于研磨石灰以增强其反应性的试剂

    公开(公告)号:US5275650A

    公开(公告)日:1994-01-04

    申请号:US982006

    申请日:1992-11-24

    摘要: A grinding agent for refining coarse lime by grinding in an aqueous medium to a microparticulate size, composed of a water-soluble ethylene polymer and/or copolymer, wherein, said grinding agent:a) is formed from a least one monocarboxylic ethylenically unsaturated monomer, andb) has an average molecular weight of between 200 and 1,900 g/mole.Grinding in the presence of the grinding agent allows the production of aqueous lime suspensions which have a high concentration of dry material expressed in weight percent, preferably between 40% and 60%, with particles of a size of less than 4 microns and median diameter of less than 2.9 microns.

    摘要翻译: 一种用于通过在水性介质中研磨成由水溶性乙烯聚合物和/或共聚物组成的微粒尺寸的粗石灰的研磨剂,其中所述研磨剂:a)由至少一种单羧基烯属不饱和单体形成, 和b)的平均分子量为200至1,900g / mol。 在研磨剂存在下研磨允许生产具有高浓度干物质的水性石灰悬浮液,其以重量百分数表示,优选40%至60%,其尺寸小于4微米,中值粒径 小于2.9微米。

    Application to aqueous calcium carbonate pigment suspensions of a
polycarboxylic agent with phosphoric or phosphonic groups which inhibit
the shock effect caused by the introduction of an electrolyte at high
concentration
    7.
    发明授权
    Application to aqueous calcium carbonate pigment suspensions of a polycarboxylic agent with phosphoric or phosphonic groups which inhibit the shock effect caused by the introduction of an electrolyte at high concentration 失效
    应用于具有抑制高浓度电解质引起的电击的磷光体或磷酸基团的聚碳酸酯代谢物的碳酸钙颜料悬浮液

    公开(公告)号:US5145902A

    公开(公告)日:1992-09-08

    申请号:US561004

    申请日:1990-08-01

    摘要: The viscosity increase of aqueous calcium carbonate pigment suspensions having high concentrations of dry substance is prevented by adding as a compatibility, dispersing, and/or grinding agent to an aqueous calcium carbonate suspension a copolymer of the formula: ##STR1## wherein R.sub.1 is H or methyl, R.sub.2 and R.sub.3 is H, C.sub.1-4 alkyl or a carboxylic acid group, R.sub.4 is H or C.sub.1-4 alkyl, R.sub.5 is a bridging group, R.sub.6 is H, a cation, an amino group, C.sub.1-3 alkyl, C.sub.1-4 ester or substituted amide and R.sub.7 to R.sub.9 each is hydrogen, a carboxylic acid containing group; K has a value between 30 and 65% by weight relative to the total weight; L has a value between 20 and 60% by weight relative to the total weight; M has a value between 10 and 45% by weight relative to the total weight; and the sum of L and M is equal to at least 35% by weight relative to the total weight, thereby preventing the shock effect when a concentrated alkaline electrolyte is added to the suspension.

    摘要翻译: 通过将相容性,分散和/或研磨剂作为相容性分散剂和/或研磨剂加入到碳酸钙水溶液悬浮液中,可以防止具有高浓度干物质的碳酸钙水性颜料悬浮液的粘度增加,所述共聚物具有下式的共聚物:其中R1是H或 甲基,R2和R3是H,C1-4烷基或羧酸基,R4是H或C1-4烷基,R5是桥连基团,R6是H,阳离子,氨基,C1-3烷基,C1 -4酯或取代的酰胺,并且R 7至R 9各自为氢,含羧酸的基团; K相对于总重量具有30至65重量%的值; L相对于总重量具有20至60重量%的值; M相对于总重量为10至45重量%之间的值; 并且L和M的总和相对于总重量等于至少35重量%,从而防止当将浓缩的碱性电解质添加到悬浮液中时的冲击效应。

    Method for obtaining water-soluble polymers, resulting polymers and uses thereof
    10.
    发明授权
    Method for obtaining water-soluble polymers, resulting polymers and uses thereof 失效
    获得水溶性聚合物,所得聚合物及其用途的方法

    公开(公告)号:US06956090B1

    公开(公告)日:2005-10-18

    申请号:US10070424

    申请日:2000-09-13

    CPC分类号: C08F2/10

    摘要: A method of obtaining homopolymers and/or copolymers in aqueous solution by the use of phosphorous acid and/or its salts or sodium hypophosphite and by neutralization during the polymerisation of the ethylenically unsaturated monomers by the continuous addition, first of all, of bases such as sodium hydroxide, potassium hydroxide or lithium hydroxide and then bases of alkaline earths such as calcium hydroxide, magnesium hydroxide, calcium oxide or magnesium oxide.The polymers obtained by the said method and uses thereof.

    摘要翻译: 通过使用亚磷酸和/或其盐或次磷酸钠在水溶液中获得均聚物和/或共聚物的方法,并且通过连续添加在烯属不饱和单体的聚合过程中的中和,首先是碱例如 氢氧化钠,氢氧化钾或氢氧化锂,然后是碱土金属如氢氧化钙,氢氧化镁,氧化钙或氧化镁的碱。 通过所述方法获得的聚合物及其用途。