Aqueous swollen macromolecule-containing system as water for firefighting
    14.
    发明授权
    Aqueous swollen macromolecule-containing system as water for firefighting 失效
    含水溶性大分子的系统作为消防水

    公开(公告)号:US4978460A

    公开(公告)日:1990-12-18

    申请号:US193438

    申请日:1988-05-12

    摘要: In a particulate additive for water for fire fighting containing a strongly swelling water-insoluble high molecular weight polymer as gelatinizing agent, the improvement which comprises a water-soluble release agent which does not cause the particles of said gelatinizing agent to swell, the particles of the gelatinizing agent being encased or dispersed in the release agent. Suitable release agents include polyethylene glycol, diammonium biphosphate, sugars, mannitol, etc. The gelatinizing agent may be a moderately cross-linked water-insoluble acrylic or methacrylic acid copolymer.

    摘要翻译: 在含有强烈溶胀的非水溶性高分子量聚合物作为凝胶化剂的消防用水的微粒添加剂中,包括不会引起所述糊化剂的颗粒膨胀的水溶性脱模剂的改进, 胶凝剂被包裹或分散在脱模剂中。 合适的脱模剂包括聚乙二醇,二磷酸二铵,糖,甘露糖醇等。糊化剂可以是中等交联的水不溶性丙烯酸或甲基丙烯酸共聚物。

    Process for making lipid membrane structures
    18.
    发明授权
    Process for making lipid membrane structures 失效
    制备脂质膜结构的方法

    公开(公告)号:US4394372A

    公开(公告)日:1983-07-19

    申请号:US339567

    申请日:1982-01-15

    申请人: James L. Taylor

    发明人: James L. Taylor

    摘要: A process for producing lipid membrane structures (vesicles or liposomes) is disclosed, wherein a solution of bilayer forming compounds in a narrowly-defined two component solvent system is dispersed in an aqueous solution and, subsequently, at least a portion of that solvent system is stripped off. This process permits the readily-reproducible production of lipid membrane structures under gentle processing conditions, ideal for use when they contain pharmaceutically-active materials.

    摘要翻译: 公开了一种用于生产脂质膜结构(囊泡或脂质体)的方法,其中将双层形成化合物在狭义的双组分溶剂体系中的溶液分散在水溶液中,随后将该溶剂体系的至少一部分 剥去。 该方法允许在温和的加工条件下容易地重复生产脂质膜结构,当它们含有药物活性物质时是理想的。

    In-flight encapsulation of particles
    19.
    发明授权
    In-flight encapsulation of particles 失效
    飞行器封装颗粒

    公开(公告)号:US4286020A

    公开(公告)日:1981-08-25

    申请号:US149982

    申请日:1980-05-15

    摘要: A method and composition for the in-flight encapsulation of particles such as insecticides, herbicides, molluscicides, acaricides, fungicides, nutrients, pheromenes, odorants, fragrances, attractants, repellants, trace elements, and the like. The composition comprises, by weight, from 1 to 40 percent of said particles, from 0.3 to 25 percent of a film-forming polymer and from 35 to 99 percent of a solvent which renders said polymers soluble. Often, other compounds may be added to impart desirable properties such as a second film-forming polymer, crosslinking agents, film modifying agents, and adhesives to improve adhesion to a target. The particle may be in a true solution suspended or emulsified through the action of surfactants and/or emulsifying agents. The film-forming polymer is selected from the class consisting of polyvinyl ethers, polyvinyl acetate, and interpolymers of alpha-beta olefinically unsaturated carboxylic acids and N-methylol acrylic amides, as set forth in U.S. Pat. No. 3,007,887. Upon ejection from a spray apparatus and during flight through the intervening atmosphere, the solution rapidly loses the solvent component via evaporation, coacervation occurs, and a polymeric membrane forms about the particle. Control of the encapsulated particle size can be achieved through selection of the spray system and of the non-volatiles in the spray at the moment of droplet formation.

    摘要翻译: 杀虫剂,除草剂,杀软体动物剂,杀螨剂,杀真菌剂,营养物质,气味,气味剂,香料,引诱剂,驱避剂,微量元素等颗粒在飞行中包封的方法和组合物。 所述组合物按重量计包含1至40%的所述颗粒,0.3至25%的成膜聚合物和35至99%的使所述聚合物溶解的溶剂。 通常,可以加入其它化合物以赋予所需的性能,例如第二成膜聚合物,交联剂,膜改性剂和粘合剂,以改善与靶的粘合性。 颗粒可以是通过表面活性剂和/或乳化剂的作用悬浮或乳化的真实溶液。 成膜聚合物选自聚乙烯醚,聚乙酸乙烯酯,以及α-β烯属不饱和羧酸和N-羟甲基丙烯酰胺的互聚物,如美国专利No. 第3,007,887号。 当从喷雾装置喷射并且在穿过介入气氛的飞行过程中,溶液通过蒸发快速失去溶剂成分,凝聚发生,聚合物膜围绕颗粒形成。 可以通过在液滴形成时选择喷雾系统和喷雾中的非挥发物来实现对包封的粒度的控制。

    Process of preparing polymer-coated powder particles
    20.
    发明授权
    Process of preparing polymer-coated powder particles 失效
    制备聚合物涂覆的粉末颗粒的方法

    公开(公告)号:US3969547A

    公开(公告)日:1976-07-13

    申请号:US497648

    申请日:1974-08-15

    摘要: Organic or inorganic particulate solid substances are coated with a polymeric material by dispersing the particulate solids, the surfaces of which have been treated so as to be compatible with the polymer coating, in a solution containing the polymer dissolved in a water-immiscible solvent, slowly introducing into the dispersion an aqueous solution of a hydrophilic protective colloid, thus producing an emulsifying liquid medium, and removing therefrom the solvent, to finally obtain polymer coated solid particles. The polymer-coated powder thus obtained is useful for application to various substrates by fluidized bed coating, electrostatic spraying, or electrophoretic deposition, followed by sintering to form films.

    摘要翻译: 有机或无机颗粒状固体物质用聚合物材料涂覆,将颗粒固体(其表面已经被处理以与聚合物涂层相容)分散在含有溶解在与水不混溶的溶剂中的聚合物的溶液中 向分散体中引入亲水性保护胶体的水溶液,从而制备乳化液体介质,并从中除去溶剂,最终获得聚合物涂覆的固体颗粒。 由此获得的聚合物涂覆的粉末可用于通过流化床涂布,静电喷涂或电泳沉积应用于各种基材,随后烧结以形成膜。