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Polyurethane, segmented

This suggests that there is a considerable solvent interaction with the polyurethane segments. For benzene X = 0.47 and Mc = 860,... [Pg.375]

The soft prepolymer segment from Reaction 14 is in turn condensed with a low molecular weight chain extender (HO-R2OH) and excess diisocyanate (Reaction 15) to give the block polymer (A-B) which possesses soft polyether segments and hard crystalline (high MP) polyurethane segments ... [Pg.192]

Surface science. Surface characterization studies included those for base polyurethane segmented block copolymers and base polymer modified by <2 wt% U-P[AB], Surface analytical techniques included tapping mode atomic force microscopy (TM-AFM), X-ray photoelectron spectroscopy (XPS), wetting behavior by dynamic contact angle (DCA) analysis and sessile drop measurements, and attenuated total reflectance infrared spectroscopy (ATR-IR). Contact antimicrobial behavior of U-P[AB] containing hydantoin and aikylammonium B side chains was determined by spray-on and sandwich tests previously described in detail elsewhere [11, 22, 38]. [Pg.206]

This type of reaction has to be assumed to occur also in catalyst-free multiblock copolymers or even during the formation of the polyurethane segments in conventional or reaction-injection-moulding (RIM) elastomer synthesis. This has been demonstrated in an annealing experiment with a narrow fraction of a prepolymer obtained from the reaction of POTM-4 with MDI. [Pg.79]

Polyurethanes Segmented polyurethanes are typical linear block... [Pg.565]

See other pages where Polyurethane, segmented is mentioned: [Pg.92]    [Pg.92]    [Pg.787]    [Pg.789]    [Pg.790]    [Pg.152]    [Pg.160]    [Pg.15]    [Pg.310]    [Pg.127]    [Pg.458]    [Pg.286]    [Pg.53]    [Pg.20]    [Pg.787]    [Pg.789]    [Pg.790]    [Pg.371]    [Pg.451]    [Pg.1010]    [Pg.430]    [Pg.137]    [Pg.218]    [Pg.481]    [Pg.481]    [Pg.725]    [Pg.697]    [Pg.153]    [Pg.276]    [Pg.83]    [Pg.276]    [Pg.10]    [Pg.22]    [Pg.787]    [Pg.789]    [Pg.790]    [Pg.52]    [Pg.418]    [Pg.445]    [Pg.446]    [Pg.80]    [Pg.284]    [Pg.547]   
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See also in sourсe #XX -- [ Pg.346 ]

See also in sourсe #XX -- [ Pg.69 ]



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Segment polyurethane

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