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The propylene content was controlled by the monomer concentration.
It was found that the mechanical properties of these changed drastically between 70 and 53 mol% of propylene content.
Increasing the propylene content to 6%, lowered the melting temperature to 224 °C, without changing the Tg.
On the membrane with BICOVOX/Au cermet electrodes on surface, traces of CO are observed as well as a small increase of propylene content under anodic polarisation.
The copolymers produced using MAO (sample 1) and dMAO (sample 2) as cocatalysts contain high amount of fractions with very low propylene content and almost isolated propylene units.
It is found that the onset stress of shark-skin failure for ethylene/1-hexene copolymer (EHR) decreases rapidly with increasing 1-hexene content, whereas that of ethylene/propylene copolymer (EPR) is independent of propylene content in the experimental region.
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In this paper the comonomer distributions of two series of ethylene propylene copolymers with different propylene contents, which were prepared by a fluorinated bis phenoxyimine) Ti catalyst (FI EP copolymers) and a conventional Ziegler Natta catalyst (ZN EP copolymers), respectively, were characterized.
Upon increasing the poly(propylene oxide) content in the reactive solvent system the properties of the dispersed phase could be varied gradually from non-ductile glassy to completely rubbery, and consequently the properties of the PPE/epoxy could be controlled over a broad range.
On the other hand, the EP copolymers with a propylene-unit content of less than 77 mol% were incompatible with iPP.
The former and the latter findings predict that the affinity of propane to the polyimide is greater than propylene and the content of propane is much higher than that of propylene in the adsorption layer.
Segmented poly urethane urea)s have been synthesized with mixed soft segments of ultra-low monol content poly(propylene glycol) (PPG) and tri(propylene glycol) (TPG) which allows the fabrication of quality elastomers without crosslinking.
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