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Structural Studies of Shrink‐resist Polymers for Wool: The Influence of Molecular Weight and Functionality in Polypropylene Oxide Polyisocyanates
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.tb03217.x
Subject(s) - polypropylene , polymer , wool , resist , polymer chemistry , oxide , materials science , isocyanate , polymer science , chemical engineering , chemistry , composite material , organic chemistry , polyurethane , layer (electronics) , engineering
A series of polypropylene oxide diols and triols of different molecular weights was reacted with excess hexamethylene di‐isocyanate to form polyisocyanates. These polymers were applied to wool, steam‐cured, and examined in shrink‐resist and durable‐press treatments. Some difunctional polymers were effective in shrink‐resisting wool even though the cured polymer should be essentially uncrosslinked. This was attributed to interchain hydrogen bonding in the cured polymer. Optimum ranges for the functionality and molecular weight of this type of polymer for use on wool are discussed.