摘要:
Latex de polymères magnétiques ayant une concentration inférieur à 65% en poids en particules d'un diamètre de 0,03 et 5 µm, constituées de polymères vinylaromatiques hydrophobes et renfermant 0,5 à 50% en poids d'une charge magnétique par rapport au polymère. Procédé de préparation des latex, qui consiste à disperser une charge magnétique dans une phase organique formée d'un initiateur organosoluble, de tout ou partie d'un monomère vinylaromatique seul ou en mélange avec au moins un monomère copolymérisable, donnant un polymère hydrophobe et/ou d'un composé organique insoluble dans l'eau; à mélanger la dispersion obtenue avec tout ou partie d'une solution aqueuse contenant un agent émulsifiant ; à émulsifier le mélange et à polymériser après addition éventuelle du reste des constituants. Application des latex dans les industries des peintures, bandes magnétiques, enregistrement, et en biologie.
摘要:
The present invention provides a pattern forming method that enables the formation of a pattern excellent in resolution and evenness and a method for producing an electronic device. The pattern forming method according to the present invention includes a resist film-forming step of forming a resist film using an actinic ray-sensitive or radiation-sensitive resin composition that undergoes an increase in the degree of solubility in an organic solvent due to action of exposure, acid, base, or heating, an exposure step of exposing the resist film, and a developing step of developing the exposed resist film with a developer including an organic solvent. The organic solvent includes an ester-based solvent having 6 or less carbon atoms and a hydrocarbon-based solvent.
摘要:
A thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes 100 parts by weight of a thermoplastic resin and 0.5 to 30 parts by weight of zinc oxide. The zinc oxide has a peak intensity ratio (B/A) of 0.1 to 1.0, wherein A indicates a peak in the wavelength range of 370 nm to 390 nm and B indicates a peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement. The thermoplastic resin composition exhibits good properties in terms of weather resistance, antibacterial resistance, and the like.
摘要:
Polymer particles, and in particular styrenic polymer particles, having a uniform particle size distribution are prepared avoiding the formation of fine polymer powders. The suspension polymerization process which comprises providing a stirred, aqueous suspension of polymeric seed particles, adding gradually to the suspension styrenic monomer and polymerizing it therein, and continuing the addition of monomer as the polymerization proceeds, may be improved by introducing the styrenic monomerbelowthe surface of the suspension.
摘要:
Die Erfindung betrifft ein Verfahren zur kontinuierlichen Herstellung von styrolhaltigen Polymerisaten in einer ein-oder mehrstufigen Vorpolymerisation und einer anschlie-βenden ein- oder mehrstufigen kontinuierlichen Hauptpolymerisation und abschließender Aufarbeitung, wobei in der (den) Hauptpolymerisationsstufe (n) das polymerisierende Gemisch mittels ein und derselben Einrichtung einem Wärmeaustausch und einer statischen Mischung unterzogen wird.
摘要:
An intestinal anti-inflammatory preparation comprising a polymeric agent for releasing 5-aminosalicylic acid or its salts is disclosed. The polymeric agent comprises a nonabsorbable pharmacologically acceptable organic polymer backbone containing aromatic rings to which are covalently bonded via azo bonds a plurality of salicylic acid or salicylate's salt groups. The azo bonds attach to the salicylates' 5-position carbon. The polymers' azo bonds undergo bacterial cleavage in the mammalian lower bowel to release 5-aminosalicylic acid and/or its salts.