Process for producing acrylamide polymer
    41.
    发明授权
    Process for producing acrylamide polymer 失效
    丙烯酰胺聚合物的制备方法

    公开(公告)号:US5296577A

    公开(公告)日:1994-03-22

    申请号:US528618

    申请日:1990-05-25

    CPC分类号: C08F20/56

    摘要: There is disclosed a process for producing an acrylamide polymer which comprises polymerizing acrylamide monomer alone or a monomer mixture composed of 50 mole % or more of acrylamide monomer and a monomer capable of copolymerizing with acrylamide monomer in the presence of an azo series polymerization initiator and 0.1% by weight or more of 2-mercaptobenzothiazole or a salt thereof based on the weight of the monomer in an aqueous medium having a pH of 6 or higher at a temperature range of 5 to 100.degree. C., and then drying the resulting material.

    摘要翻译: 公开了一种丙烯酰胺聚合物的制造方法,其包括在偶氮系聚合引发剂和0.1重量份存在下聚合丙烯酰胺单体或由50摩尔%以上丙烯酰胺单体和能够与丙烯酰胺单体共聚的单体的单体混合物 基于单体重量的2-巯基苯并噻唑或其盐在pH为6或更高的水性介质中,在5至100℃的温度范围内,然后干燥所得材料。

    Salt tolerant super absorbents
    43.
    发明授权
    Salt tolerant super absorbents 失效
    耐盐超吸收剂

    公开(公告)号:US5274018A

    公开(公告)日:1993-12-28

    申请号:US705463

    申请日:1991-05-24

    摘要: The invention relates to a novel absorbent composition and manner of using the same. The absorbent has at least the following two components:(a) a swellable hydrophobic polymer being capable of absorbing a quantity of water which is at least about 10 times the dry weight of said polymer; and(b) an amount of an ionizable surfactant sufficient to form at least a monolayer of said surfactant about said polymer.The novel absorbent is substantially tolerant to an aqueous solution having a soluble salt, such as sodium chloride.

    摘要翻译: 本发明涉及一种新颖的吸收组合物及其使用方法。 吸收剂至少具有以下两个组分:(a)可溶胀的疏水性聚合物,其能够吸收至少约10倍所述聚合物干重的水; 和(b)足以形成所述表面活性剂至少单层的所述聚合物的量的可电离表面活性剂。 新型吸收剂基本上耐受具有可溶性盐的水溶液,例如氯化钠。

    Polymers capable of oxidative crosslinking
    46.
    发明授权
    Polymers capable of oxidative crosslinking 失效
    能够进行氧化交联的聚合物

    公开(公告)号:US5223582A

    公开(公告)日:1993-06-29

    申请号:US775647

    申请日:1991-10-10

    CPC分类号: C08F8/30 C08F2800/20

    摘要: The present invention relates to polymers capable of oxidative crosslinking, characterized in that they contain 10 to 80% by weight of structural units corresponding to formula (I) and/or (Ia) ##STR1## wherein R.sub.1 is an aliphatic saturated hydrocarbon radical containing 2 to 6 carbon atoms, provided that at least 2 carbon atoms are arranged between the nitrogen atom and the oxygen atom, andR.sub.2 at least 30% of the substituents R are monoolefinically or polyolefinically unsaturated hydrocarbon radicals and the remainder, i.e. up to 70% of the substituents R.sub.2, are saturated aliphatic and/or aromatic hydrocarbon radicals which may optionally contain oxygen and/or nitrogen as hetero atoms in the form of ether, ester, keto, urethane, urea and/or amide groups, provided that substituent R.sub.2 contains at least 2.0% by weight, based on the weight of the polymer, of aliphatically unsaturated double bonds, expressed as C.dbd.C (molecular weight=24).The present invention also relates to a process for the production of these polymers and to the use of these polymers as binders or binder component for coating or sealing compositions.

    摘要翻译: 本发明涉及能够进行氧化交联的聚合物,其特征在于它们含有10至80重量%的对应于式(I)和/或(Ia)的结构单元,其中 R1是含有2至6个碳原子的脂族饱和烃基,条件是至少2个碳原子排列在氮原子和氧原子之间,R2至少30%的取代基R是单烯属或聚烯烃不饱和烃基, 剩余部分,即高达70%的取代基R2,是饱和的脂族和/或芳族烃基,其可以任选地含有氧和/或氮作为醚,酯,酮,氨基甲酸酯,脲和/或 酰胺基团,条件是取代基R2基于聚合物的重量计含有至少2.0重量%的脂族不饱和双键,表示为C = C(分子量= 24)。 本发明还涉及这些聚合物的制备方法以及这些聚合物作为粘合剂或粘合剂组分用于涂覆或密封组合物的用途。

    Thermally crosslinkable hydrophilic copolymers and their use in
reprography
    49.
    发明授权
    Thermally crosslinkable hydrophilic copolymers and their use in reprography 失效
    热交换型亲水性共聚物及其在代谢中的应用

    公开(公告)号:US5178961A

    公开(公告)日:1993-01-12

    申请号:US731464

    申请日:1991-07-17

    摘要: The invention relates to a thermally crosslinkable hydrophilic copolymer have the general structure:. . . --(A).sub.m --. . . --(B).sub.n --. . . --(C).sub.o --. . . --(D).sub.p --. . .in whichA is at least one polymerizable monomer having an acidic side group,B is at least one polymerizable monomer having a basic side group,C is at least one polymerizable monomer having a non-polar, non-hydrophilic side group, andD is N-butoxymethylmethacrylamide,m, n, o and p are the monomer contents of monomers A, B, C and D, respectively, in mol %, with m+n +o+p=100 mol %, with the proviso that the sum of m+n=about 5 to 90 mol %, m and n are each .gtoreq.2 mol % and p is .gtoreq.1 mol %,wherein the copolymer is a linear copolymer having a random structure of the monomers. The copolymer is useful as a hydrophilizing agent for lithographic and offset printing plates.

    摘要翻译: 本发明涉及一种热交联亲水共聚物,其具有以下一般结构: 。 。 -(上午-。 。 。 - (B)n-。 。 。 - (C)o-。 。 。 - (D)p-。 。 。 其中A是具有酸性侧基的至少一种可聚合单体,B是至少一种具有碱性侧基的可聚合单体,C是至少一种具有非极性,非亲水侧基的可聚合单体,D是 N-丁氧基甲基甲基丙烯酰胺,m,n,o和p分别是单体A,B,C和D的单体含量,分别为mol%,m + n + o + p = 100mol%,条件是总和 m + n =约5〜90摩尔%,m和n分别为≥2摩尔%,p为≥1摩尔%,其中共聚物为具有单体无规结构的线性共聚物。 该共聚物可用作平版印刷版和胶版印刷版的亲水剂。