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    • 6. 发明申请
    • RETARDED SUPERABSORBENT POLYMERS
    • 阻滞超吸收聚合物
    • US20110095227A1
    • 2011-04-28
    • US12994201
    • 2009-05-15
    • Gregor HerthMichael SchinabeckStefan Friedrich
    • Gregor HerthMichael SchinabeckStefan Friedrich
    • B01J20/26C08F228/02C08F220/56C08J3/28
    • C08F220/60C04B24/2652C04B28/02C04B40/0039C04B2103/0051C04B2103/0062C04B40/0608C04B24/26
    • What is claimed is a superabsorbent polymer (SAP) with anionic and/or cationic properties and retarded swelling action, which was prepared by polymerizing ethylenically unsaturated vinyl compounds. This SAP is characterized in that its swelling begins no earlier than after 5 minutes and in that it was prepared with the aid of at least one process variant selected from the group of a) polymerizing the monomer components in the presence of a combination consisting of at least one hydrolysis-stable crosslinker and at least one hydrolysis-labile crosslinker; b) polymerizing at least one permanently anionic monomer and at least one hydrolysable cationic monomer; c) coating a core polymer component with at least one further polyelectrolyte as a shell polymer; d) polymerizing at least one hydrolysis-stable monomer with at least one hydrolysis-labile monomer in the presence of at least one crosslinker. Owing to the variability of the three preparation alternatives with regard to the starting materials and the process conditions, but also owing to the possible combinations with one another, the present invention can provide superabsorbent polymers which are suitable especially for use in foams, mouldings and fibres, but also as carriers for plant growth- and fungal growth-regulating agents, and for controlled release of active ingredients, or in construction materials. The present polymers are suitable especially for use as construction material additives.
    • 所要求的是具有阴离子和/或阳离子性质和延迟溶胀作用的超吸收聚合物(SAP),其通过聚合烯属不饱和乙烯基化合物制备。 该SAP的特征在于其溶胀不迟于5分钟之后开始,并且其在至少一种选自以下的方法变体制备:a)在由以下组合组成的组合的存在下聚合单体组分: 至少一种水解稳定的交联剂和至少一种水解不稳定的交联剂; b)聚合至少一种永久性阴离子单体和至少一种可水解阳离子单体; c)用至少一种另外的聚电解质作为壳聚合物涂覆芯聚合物组分; d)在至少一种交联剂的存在下,使至少一种水解不稳定的单体与至少一种水解稳定的单体聚合。 由于起始材料和工艺条件的三种制备替代品的可变性,而且由于彼此可能的组合,本发明可以提供特别适用于泡沫,模制品和纤维的超吸收聚合物 ,也可用作植物生长和真菌生长调节剂的载体,以及活性成分的控制释放或建筑材料。 本发明的聚合物特别适用于建筑材料添加剂。
    • 7. 发明申请
    • METHODS FOR BLOCKING UNDERGROUND FORMATIONS
    • 阻塞地下形态的方法
    • US20110237468A1
    • 2011-09-29
    • US12733370
    • 2009-11-07
    • Roland Reichenbach-KlinkeMarcus GuzmannThomas PfeufferGregor HerthStefan Friedrich
    • Roland Reichenbach-KlinkeMarcus GuzmannThomas PfeufferGregor HerthStefan Friedrich
    • C09K8/588
    • C09K8/5083C09K8/512C09K8/516
    • A process is proposed for blocking underground formations in the extraction of fossil oil and/or gas, a first step involving introducing water-absorbing particles into liquid-bearing and porous rock formations, said particles being water-swellable, crosslinked and water-insoluble polymers, said particles in the water-bearing rock formation finally preventing liquid flow through the rock layers by water absorption. This process is characterized in that the absorbing particles comprise a superabsorbent polymer with anionic and/or cationic properties and a retarded swelling action. This process, which can also be carried out in saline formation waters, is notable in that the swelling of the superabsorbents used begins no earlier than after five minutes and in that the superabsorbents are obtainable by four proposed process variants and any combination thereof. This process, which does not need a carrier liquid, is notable for its simplicity and especially the controllable retardation of the swelling action under the specific conditions of underground rock formations.
    • 提出了一种在提取化石油和/或气体时阻挡地下地层的方法,第一步涉及将吸水颗粒引入含液和多孔岩层,所述颗粒是水溶胀性,交联和水不溶性聚合物 所述含水岩层中的颗粒最终通过吸水阻止液体流过岩层。 该方法的特征在于吸收颗粒包含具有阴离子和/或阳离子性质和延迟溶胀作用的超吸收性聚合物。 这个也可以在盐水形成水中进行的方法是显着的,因为使用的超吸收剂的溶胀不迟于五分钟之后开始,并且超吸收剂可通过四种所提出的方法变体及其任何组合获得。 这种不需要载体液体的方法是显而易见的,因为它的简单性,特别是在地下岩层的特定条件下可膨胀作用的可控延迟。