Polyurethane coating

Details Polyurethane coating Polyurethane coating

2007-07-26

2009-11-24

Sergent, Rabon (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S077000, C528S078000, C528S081000, C528S082000

Reexamination Certificate

active

07622541

ABSTRACT:
A polyurethane coating made by: applying to a surface a polyol composition and an isocyanate composition, such that a mixture of the polyol composition and the isocyanate composition is formed during the application; and allowing the mixture to cure to the polyurethane coating. The polyol composition has a polyol monomer having the chemical formula:R1is a divalent radical selected from aliphatic, aromatic, and ether-containing group. R2is a monovalent radical selected from aliphatic, aromatic, ester-containing group, ether-containing group, and acrylic-containing group. R2is free of —O—CH2—CH(OH)— groups, and the polyol monomer is free of epoxy groups and amino hydrogens. The isocyanate composition comprises an isocyanate compound having at least two isocyanate groups. The polyol composition or the isocyanate composition comprises a water scavenger. The polyol composition or the isocyanate composition comprises a polyurethane catalyst.

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