C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/131, 402/133
C08G 18/12 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) D06M 15/568 (2006.01)
Patent
CA 1336734
The invention relates to flexible breathable polyurethane coatings and films and to the prepolymers from which they are formed. These prepolymers are isocyanate-capped poly (alkylene oxide) glycol polyurethanes with low viscosities and low freezing points. The difunctional nature of the random copolymers of ethylene oxide and propylene oxide added to simple diols provide the low viscosity and low freezing points; high levels of ethylene oxide in the polyol provides the breathability.
604140
Gowling Lafleur Henderson Llp
W.l. Gore & Associates Inc.
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