C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/165
C08G 71/04 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/48 (2006.01) C08G 18/75 (2006.01)
Patent
CA 2009456
ABSTRACT The invention relates to bulk polyurethane ionomers prepared by the reaction (A) an isocyanate terminated ionic prepolymer with (B) a hydrocarbon polyol chain extender, said prepolymer having been prepared from (i) an excess of diisocyanate, (ii) a mixture comprising a diol and an organic polyol having three or more reactive hydroxyl moieties each having a molecular weight of from 250 to 6,000 and (iii) a difunctional isocyanate-reactive component containing an ionic group or potential ionic group. The polyurethane can be molded into desired shapes such as films and sheets. The films are useful in many fields such as chip-resistant coatings in automotive applications. 36,709-F
Anand Joginder N.
Ruetman Sven H.
Smart & Biggar
The Dow Chemical Company
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