Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2007-07-27
2009-08-18
Eashoo, Mark (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S591000, C525S453000
Reexamination Certificate
active
07576157
ABSTRACT:
An aqueous dispersion of polyurethane composites is made by forming a dispersion of urethane prepolymer or polymer and ketone functional molecule by dispersing them in an aqueous media and adding a hydrazine functional molecule. When the ketone functional molecule is derived from levulinic acid and epoxidized vegetable oil, the resulting urethane dispersion has enhanced coalescence with less need for coalescing aids.
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Motawie, A.M. et al., “Some Epoxidized Polyurethane and Polyester Resins Based on Linseed Oil”, Journal of Applied Polymer Science, Mar. 28, 1995, pp. 1725-1732, vol. 55, No. 13.
Dunlap Thoburn T.
Eashoo Mark
Frank Noah
Laferty Samuel B.
Lubrizol Advanced Materials, Inc.
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