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61.发明授权Methods for synthesizing pulps and short fibers containing polybenzazole polymers 失效用于合成聚氨酯聚合物的脉冲和短纤维的方法
公开(公告)号：US5164131A
公开(公告)日：1992-11-17
申请号：US584813
申请日：1990-09-19
CPC分类号： D01F6/74
摘要： Pulps and short fibers containing polybenzoxazole and/or polybenzothiazole or copolymers thereof can be synthesized by freezing the wet fiber straight from the coagulation bath without drying, and chopping or grinding the frozen fiber to the desired size and degree of fibrillation.
摘要翻译： 含有聚苯并恶唑和/或聚苯并噻唑或其共聚物的纸浆和短纤维可以通过将干燥的纤维从凝固浴中直接冷冻而不干燥，并将冷冻纤维切碎或研磨成所需尺寸和原纤维化程度来合成。
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公开(公告)号：US4941972A
公开(公告)日：1990-07-17
申请号：US678870
申请日：1984-12-06
CPC分类号： B01D71/40 , B01D69/125 , B01D71/44
摘要： A novel reverse osmosis membrane comprising a hydroxyalkyl methacrylate film cross-linked with a vinylaralkyl dialkylsulfonium salt is described. This film, when cast on a compatible substrate, results in a membrane of exceptional chlorine resistance.
摘要翻译： 描述了一种包含与乙烯基烷基二烷基锍盐交联的甲基丙烯酸羟烷基酯薄膜的新型反渗透膜。 当这种薄膜在兼容的基材上铸造时，会产生特别耐氯的膜。
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公开(公告)号：US4885355A
公开(公告)日：1989-12-05
申请号：US236819
申请日：1988-08-26
IPC分类号： C07D333/32 , C07D333/46 , C08F20/38 , C08F22/24 , C08G59/14 , C09D201/02
CPC分类号： C09D201/02 , C07D333/32 , C07D333/46 , C08F20/38 , C08F22/24 , C08G59/1483
摘要： Water-soluble sulfonium salts are converted, without the elimination of odorous volatile by-products, to water-insoluble products useful as binders in coating formulations by heating a water-soluble cyclic sulfonium salt in which the sulfonium sulfur is bonded only to aliphatic carbons.
摘要翻译： 通过加热其中锍硫仅与脂肪族碳键合的水溶性环状锍盐，将水溶性锍盐转化成不含恶臭挥发性副产物的水不溶性产物，作为涂料配方中的粘合剂。
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公开(公告)号：US4859339A
公开(公告)日：1989-08-22
申请号：US154777
申请日：1988-02-11
CPC分类号： B01D71/28
摘要： Microporous, asymmetric membranes comprising syndiotactic vinylaromatic polymers having utility as membranes for ultrafiltration or reverse osmosis and a process for their production.
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公开(公告)号：US4828700A
公开(公告)日：1989-05-09
申请号：US162824
申请日：1988-03-02
申请人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
发明人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
CPC分类号： B01D67/0088
摘要： Reverse osmosis membranes treated with polymers bearing carboxylic acid groups and optionally pendant hydroxyl or amide moieties display enhanced salt rejection and/or increased water flux. This treatment is particularly useful for improving the membrane characteristics of cellulose acetate and polyamide membranes.
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公开(公告)号：US4769148A
公开(公告)日：1988-09-06
申请号：US122307
申请日：1987-11-18
申请人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
发明人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
CPC分类号： B01D69/125 , B01D71/56
摘要： An improved composite polyamide membrane and methods of making the membrane are described. This improved membrane is prepared using a cationic polymeric wetting agent in an aqueous solution containing a polyfunctional amine reactant which is interfacially polymerized with an acyl halide to form a thin film polyamide discriminating layer on a microporous support. Alternatively, the wetting agent can be applied directly to the substrate and the interfacial polymerization can occur on said treated substrate. The resulting membrane exhibits an unexpected combination of high water flux, high rejection of divalent anion salts, variable sodium chloride rejection and good caustic resistance at low operating pressures. In one embodiment of this invention, a porous substrate is first treated with an aqueous piperazine solution containing a copolymer of vinylbenzyl dimethyl sulfonium chloride and methacrylic acid and then the coated microporous support is contacted with trimesoyl chloride in an organic solvent.
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公开(公告)号：US4427819A
公开(公告)日：1984-01-24
申请号：US388065
申请日：1982-06-14
CPC分类号： C08F2/28 , C08F2/24 , C08F291/00
摘要： Structured particle latexes contain organic polymer particles in aqueous media having a nonionic core encapsulated by a thin layer of a water-insoluble copolymer containing pH independent stabilizing anionic groups such as sulfonate groups chemically bound at or near the particle surface.
摘要翻译： 结构化颗粒胶乳含有水性介质中的有机聚合物颗粒，其具有由非水溶性聚合物包封的非离子核心，所述非水性核心包含不溶于水的共聚物，所述非水溶性共聚物含有不依赖于pH的稳定阴离子基团，例如在颗粒表面
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68.发明授权
公开(公告)号：US4426489A
公开(公告)日：1984-01-17
申请号：US272435
申请日：1981-06-10
CPC分类号： C08F8/44
摘要： Substantially linear, synthetic, water-soluble or water-dispersible cationic interpolymeric surfactants which are particularly useful for reducing the surface tension of an aqueous medium; such surfactants having a critical micelle concentration of from 0.01 to about 10 percent in water at 25.degree. C., a charge density of from about 1 to 5 meq/g and a number average molecular weight of from about 500 to about 40,000 and being composed of a plurality of nonionic hydrophobic units and pH independent hydrophilic cationic units randomly distributed in the backbone of such interpolymeric surfactants and wherein an average molecule of such surfactant contains from 1 to about 5 hydrophilic cationic units substituted with a pendant hydrophobic group, such hydrophobic group being an alkyl or aralkyl group of from about 8 to about 20 carbon atoms are prepared by (1) aqueous, emulsion polymerization of a mixture of ethylenically unsaturated nonionic monomers at least one of which contains an ion-forming group in the presence of a copolymerizable monomeric surfactant to form a latex, (2) reacting the resulting latex with a coreactant to form a water-soluble cationic interpolymer.
摘要翻译： 特别适用于降低水性介质表面张力的基本线性，合成的，水溶性或水分散性的阳离子互聚表面活性剂; 这种表面活性剂在25℃的水中的临界胶束浓度为0.01至约10％，电荷密度为约1至5meq / g，数均分子量为约500至约40,000，并且组成 多个非离子疏水单元和pH不依赖的亲水阳离子单元，其随机分布在这种互聚表面活性剂的主链中，并且其中平均分子表面活性剂含有1至约5个被侧基疏水基取代的亲水性阳离子单元， 通过（1）烯键式不饱和非离子单体的混合物的水性乳液聚合制备约8至约20个碳原子的烷基或芳烷基，所述烯属不饱和非离子单体的至少一种在可共聚单体存在下含有离子形成基团 表面活性剂以形成胶乳，（2）使所得胶乳与共反应物反应以形成水溶性阳离子互聚物。
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公开(公告)号：US4189345A
公开(公告)日：1980-02-19
申请号：US825320
申请日：1977-08-17
CPC分类号： D21H21/54 , C08F8/00 , D21H17/34 , D21H17/375 , D21H17/43
摘要： A fibrous product containing (a) a papermaking grade of pulp, (b) a structured particle latex having pH independent cationic groups bound at or near the particle surface and (c) a co-additive. The pulp is represented by unbleached softwood kraft. The latex is represented by a structured-particle latex having (a) a core of a copolymer of styrene and butadiene (b) an encapsulating layer of styrene, butadiene and vinylbenzyl chloride which is reacted with 2-(dimethylamino) ethanol to form quaternary ammonium groups. The co-additive is represented by a hydrolyzed polyacrylamide having a degree of polymerization of 5500. To an aqueous slurry of the pulp are added the latex and an aqueous solution of the co-additive, the resulting suspension is dewatered and dried by heating.
摘要翻译： 一种纤维制品，其含有（a）造纸级纸浆，（b）结构化颗粒胶乳，其具有在颗粒表面处或附近结合的pH独立阳离子基团，和（c）共添加剂。 纸浆由未漂白的软木牛皮纸代表。 胶乳由具有（a）苯乙烯和丁二烯的共聚物的核心（b）苯乙烯，丁二烯和乙烯基苄基氯的包封层的结构化颗粒胶乳代表，其与2-（二甲基氨基）乙醇反应形成季铵 团体 共添加剂由聚合度为5500的水解聚丙烯酰胺表示。向纸浆的水性浆料中加入胶乳和共添加剂的水溶液，将所得悬浮液脱水并通过加热干燥。
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公开(公告)号：US4161502A
公开(公告)日：1979-07-17
申请号：US789385
申请日：1977-04-02
CPC分类号： B29C43/16 , B29C43/14 , B29C2791/001 , B29K2105/251 , B29K2105/255
摘要： An improvement in the process of forming plastic articles wherein such articles are forged from a compression formed briquette of resinous powder, such improvement comprising (1) compressing a resinous powder having lamellar crystalline nonspherulitic morphology into a substantially unoriented briquette having green strength, (2) removing the briquette from the compressing device and placing the briquette in a forging press wherein lubrication is provided between the contacting surfaces of the briquette and the forging press to permit plug flow, and (3) forging the briquette into a shaped article while maintaining the briquette at a temperature between the alpha-transition temperature and the melt temperature of the resinous powder.
摘要翻译： 制造塑料制品的方法的改进，其中这种制品是由压制成型的树脂粉末形成的，这样的改进包括：（1）将具有层状结晶非熔点形态的树脂粉末压成具有绿色强度的基本上无取向的块状物;（2） 从压缩装置中取出团块并将该团块放置在锻压机中，其中在煤饼和锻压机的接触表面之间提供润滑以允许活塞流动，和（3）将团块锻压成成型制品，同时保持压块 在α转变温度和树脂粉末的熔融温度之间的温度下。
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