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公开(公告)号:US20100213129A1
公开(公告)日:2010-08-26
申请号:US12514752
申请日:2007-11-13
CPC分类号: C02F1/002 , B01D61/025 , B01D61/08 , B01D2311/2626 , B01D2313/24 , B01D2313/40 , C02F1/285 , C02F1/44 , C02F1/445
摘要: A water purification apparatus comprising a semi-permeable membrane capable of being contacted with a water source; a superabsorbent polymer capable of absorbing water across said semi-permeable membrane; a pressure application surface capable of transmitting pressure to the gel; and a permeable membrane through which absorbed water is capable of being released from the gel upon application of pressure thereto from said pressure application surface, wherein said permeable membrane is isolated in use from the water source by an isolation means
摘要翻译: 一种水净化装置,包括能够与水源接触的半透膜; 能够吸收横跨所述半透膜的水的超吸收性聚合物; 能够将压力传递到凝胶的压力施加表面; 以及可渗透膜,通过该渗透膜,从所述压力施加表面施加压力时,吸收的水能够从凝胶释放,其中所述渗透膜在使用中通过隔离装置与水源隔离
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公开(公告)号:US06720061B1
公开(公告)日:2004-04-13
申请号:US09936939
申请日:2001-11-13
IPC分类号: B32B300
CPC分类号: C08J7/047 , B44C1/10 , B44F1/04 , B44F1/06 , C03C17/006 , C03C17/32 , C03C2217/40 , C03C2217/475 , C08J2453/00 , C08L53/00 , C08L53/02 , C08L53/025 , C09D153/00 , C09D153/02 , C09D153/025 , C09J153/00 , C09J153/02 , C09J153/025 , G02B1/04 , Y10T428/24479 , Y10T428/24942 , Y10T428/31797
摘要: An optically active film composite comprising a transparent substrate and at least one layer of a block copolymer blend comprising between 30:70 to 70:30 percent by volume of each component of the copolymer, the block copolymer forming lamellar microdomains of each polymeric component, which components have different refractive indices. The thickness of the lamellae may be controlled through selection of molecular weights of the components and by the addition of compatible homopolymers.
摘要翻译: 一种光学活性膜复合材料,其包含透明基材和至少一层嵌段共聚物共混物,其包含共聚物各组分的30:70至70:30%(体积),所述嵌段共聚物形成每个聚合物组分的层状微区,其中 组分具有不同的折射率。 可以通过选择组分的分子量和通过添加相容的均聚物来控制薄片的厚度。
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公开(公告)号:US5374703A
公开(公告)日:1994-12-20
申请号:US90636
申请日:1993-07-13
IPC分类号: B29C45/00 , B29K75/00 , C08G18/02 , C08G18/09 , C08G18/50 , C08G18/61 , C08G18/65 , C08G18/66 , C08G18/69 , C08G18/00
CPC分类号: C08G18/6685 , C08G18/092 , C08G18/5024 , C08G18/61 , C08G18/696 , C08G2120/00
摘要: Urea-isocyanurate copolymers are obtained by the reaction of:(a) an organic polyisocyanate compound,(b) a polyamino compound having at least two amino groups connected by a flexible chain, and(c) optionally an amino chain extender in which the amino groups are substantially less reactive towards the polyisocyanate (a) than are the amino groups of compound (b), the reaction being effected in the presence of(d) a trimerisation catalyst effective to convert a polyisocyanate to a polyisocyanurate in the reaction the ratio of the number of equivalents of isocyanate groups to the total number of moles of amino groups is at least 8.7, and the ratio of the number of equivalents of chain extender (c)--if used--to the number of equivalents of polyamino compound (b) is a maximum of 5:1.The copolymers are especially useful for producing articles by Structural Reaction Injection Moulding.
摘要翻译: 尿素 - 异氰脲酸酯共聚物通过以下反应获得:(a)有机多异氰酸酯化合物,(b)具有至少两个通过柔性链连接的氨基的聚氨基化合物,和(c)任选的氨基增链剂,其中氨基 基团比化合物(b)的氨基基本上对多异氰酸酯(a)的反应性基本上更低的反应,该反应在(d)三聚催化剂存在下进行,所述三聚催化剂在反应中有效将多异氰酸酯转化为聚异氰脲酸酯, 异氰酸酯基相对于氨基总摩尔数的当量数至少为8.7,而使用的扩链剂(c)的当量数与聚氨基化合物(b)的当量数之比为 最多为5:1。 该共聚物特别适用于通过结构反应注射成型生产制品。
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