Polyurethane coating compositions and their use as gel coats
AssigneeCovestro LLC
InventorsAnthony R. Loveday, Jack R. Reese, Rick L. Adkins, David P. Zielinski, James A. Thompson-Colón, Alan D. Bushmire, Liang Chen, Chen Xu
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Abstract
Polyurethane coating compositions are disclosed that include an isocyanate-reactive component that includes a polycyclic polyether polyol that is the reaction product of a reaction mixture that includes a polycyclic polyol starter, and an alkylene oxide, as well as an isocyanate-functional component that includes a non-aromatic polyisocyanate. The polyurethane coating compositions may be particularly useful as a gel coat in the manufacture of glass fiber reinforced plastics.
Claims20
A coating composition comprising:
- (a) an isocyanate-reactive component comprising a polycyclic polyether polyol that is the reaction product of a reaction mixture comprising:
- (i) a polycyclic polyol starter, and
- (ii) an alkylene oxide;
- and
- (b) an isocyanate-functional component comprising a non-aromatic polyisocyanate, wherein the polycyclic polyol starter comprises a polycyclic diol, or the cyclic groups of the polycyclic polyol starter include an ether linkage.
A coating composition comprising:
- (a) an isocyanate-reactive component comprising a polycyclic polyether polyol with a hydroxyl functionality of 2 to 2.5 and a number average molecular weight of 200 Da to 400 Da, wherein the polycyclic polyether polyol is a reaction product of a reaction mixture comprising:
- (i) a polycyclic polyol starter comprising a tricyclodecane unit, a bicyclodecane unit, a norbomane unit, a bicyclooctane unit, a bicyclononane unit, an isosorbide unit, or a bicycloundecane unit, and
- (ii) an alkylene oxide;
- and
- (b) an isocyanate-functional component comprising a biuret, allophonate, and/or isocyanurate of 1,6-hexanediisocyanate.
A coating composition comprising:
- (a) an isocyanate-reactive component comprising a polycyclic polyether polyol that is the reaction product of a reaction mixture comprising:
- (i) a polycyclic polyol starter, and
- (ii) an alkylene oxide;
- and
- (b) an isocyanate-functional component comprising a biuret, allophonate, and/or isocyanurate of 1,6-hexanediisocyanate.
Dependencies are inferred from the claim text.