摘要:
The present invention relates to a method to make a rotational molded skin from a powdered polyolefin elastomer composition derived from spray drying an aqueous polyolefin dispersion composition wherein the aqueous polyolefin dispersion composition is derived from melt blending a polyolefin composition comprising an olefin block copolymer, a dispersing agent, and water, wherein said aqueous dispersion preferably has a pH less than 12.
摘要:
A powder that contains microparticles formed from an aromatic polyester is provided. The mean size of the microparticles is generally from about 0.1 to about 40 micrometers. The microparticles may also have a shape that is generally spherical in nature. Regardless of the actual size and shape, however, the size distribution of the microparticles may be consistent throughout the powder. For example, at least about 50% by volume of the microparticles may have a mean size within a range of from about 0.1 to about 200 micrometers. Without intending to be limited by theory, the present inventor believes that a certain size and/or size distribution can improve the quality of coatings formed from the powder.
摘要:
Powder coatings compositions are disclosed in which the powder particles are comprised of a combination of a thermosetting polymeric resin, a cross-linking agent and a thermoplastic resin. The disclosed powder coating compositions can be applied to a substrate by such conventional methods as electrostatic fluidized bed, hot flocking, electrostatic spray, and electrostatic magnetic brush tribocharging processes, followed by curing in an oven, or by a thermal spray (PTS) method that does not require thermal post-curing.
摘要:
This invention provides a polymer, which is preferably a polyether polymer, for use in coating compositions. Containers comprising the polymer and methods of making such containers are also provided.
摘要:
Von organischen Lösemitteln im Wesentlichen oder völlig freie, strukturviskose, härtbare, wässrige Pulverdispersionen, enthaltend dimensionsstabile Partikel (A) mit einer mit der Laserbeugungsmethode gemessenen mittleren Partikelgröße von D (v, 0,5) = 1 bis 10 µm, wobei die dimensionsstabilen Partikel (A) als Bindemittel 10 bis 100 Gew.-% mindestens eines (Meth)Acrylatcopolymerisats (A1) mit einer OH-Zahl von 40 bis 250 mg KOH/g und einer Säurezahl von 5 bis 100 mg KOH/g enthalten, das durch mehrstufige Copolymerisation (a11) Hydroxylgruppe enthaltender Acrylat- und/oder Methacrylatmonomeren und (a12) Säuregruppe enthaltender, olefinisch ungesättigter Monomeren in organischer Lösung hergestellt worden ist, wobei (1) in einer Stufe die Gesamtmenge oder der überwiegende Anteil der Monomeren (a11) gegebenenfalls mit einem geringen Anteil der Monomeren (a12) (co)polymerisiert worden ist, bevor (2) in einer weiteren Stufe die Gesamtmenge oder der überwiegende Anteil der Monomeren (a12) gegebenenfalls mit dem Rest der Monomeren (a11) (co)polymerisiert worden ist; Verfahren zur ihrer Herstellung und ihre Verwendung.
摘要:
A fluoropolymer composition comprising a fluoropolymer with a particle size distribution having a ratio of the mode to D95 of 0.75 or greater and wherein when the fluoropolymer is a copolymer consisting of interpolymerized units derived from tetrafluoroethylene and perfluoro(propyl vinyl) ether, the fluoropolymer has less than 60 unstable endgroups per million carbon atoms; coated articles comprising the fluoropolymer; and methods for making the same.
摘要:
The invention relates to a process of preparation of powder coating compositions providing a desired gloss level of the resulted coatings comprising the following steps of a) providing particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 µm, and b) mixing these particles with particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 µm, the particles of which are irradiated with high energy radiation under near-ambient temperature, in a mixing ratio of 1 : 99 to 99 : 1; the process according to the invention provides powder coating compositions producing a desired gloss level of the coatings by varying the time period and/or the intensity of the high energy irradiation of the powder coating particles or by varying the mixing ratio between the non-irradiated powder particles and the irradiated powder particles.