Thermoplastic polyurethane elastomers were prepared from 4,4-diphenylmethane diisocyanate (MDI)/1,4-butanediol (BD)/poly(propylene glycol) (PPG) and MDI/BD/poly(oxytetramethylene glycol) (PTMG). The MDI/BD-based hard-segment content of polyurethane prepared in this study was of 39 -65 wt %. These po
Preparation of polyurethane microcapsules with different soft segments and their characteristics
โ Scribed by K Hong; S Park
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 804 KB
- Volume
- 42
- Category
- Article
- ISSN
- 1381-5148
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๐ SIMILAR VOLUMES
A series of polycaprolactone/4,4'-diphenylmethane diisocyanate/l,4-butanediol (PCL/MDI/ BDO) segmented polyurethanes of different compositions was synthesized by solution po- lymerization. The molecular weight of PCL diols used was in the range of 1600-7000. The crystallinity and morphology of these
## Abstract Novel aqueous polyurethane (PU) hybrid dispersions were successfully prepared with 5โ15 mol % functionalized hexamethylene diisocynate trimer modified by __N__โ(__n__โbutyl)โ3โaminopropyltriethoxysilane and dihydroxylpropylโterminated siloxane oligomers (TS). The results of the differen
Two series of thermoplastic polyurethane elastomers [poly(propylene glycol) (PPG) based PP samples and poly(oxytetramethylene)glycol (PTMG) based PT samples] were synthesized from isophorone diisocyanate (IPDI)/1,4-butanediol (BD)/ PPG and IPDI/BD/PTMG. The IPDI/BD based hard segments contents of po
## Abstract Polyurethane (PU) containing poly(propylene glycol) (PPG) or poly(tetramethylene oxide) (PTMG) soft segments have been prepared by twoโstep condensation polymerization. The former (PPGโPU) with a lower critical solution temperature (LCST) at โผ21 ยฐC can change from hydrophilic to hydroph