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Structural Studies of Shrink‐resist Polymers for Wool: Polyisocyanates from a Polypropylene Oxide Triol and Different Di‐isocyanates
Author(s) -
Guise G. Bruce,
Rushforth Michael A.
Publication year - 1975
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1975.tb03253.x
Subject(s) - resist , polypropylene , curing (chemistry) , isocyanate , polymer , triol , materials science , wool , oxide , polymer chemistry , thermal stability , composite material , chemical engineering , chemistry , organic chemistry , polyurethane , diol , layer (electronics) , engineering , metallurgy
Polyisocyanates were prepared from a polypropylene oxide triol (mol. wt 3000) and various di‐isocyanates, applied to wool fabrics, and moisture‐cured. The shrink‐resist effectiveness decreased as the rate of moisture curing of the poly‐isocyanate increased. The stability of the cured polymer to thermal‐ and photo‐degradation was much higher with polyisocyanates from aromatic than with those from aliphatic di‐isocyanates. The shrink‐resist effectiveness was reduced in the presence of catalysts. An explanation is proposed for the observed differences in shrink‐resist effectiveness based on differences in the extent of cross‐linking in the cured polymer.