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...
Reexamination Certificate
2005-05-10
2005-05-10
Gorr, Rachel (Department: 1711)
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...
C528S073000, C525S123000, C525S440030, C525S453000
Reexamination Certificate
active
06891012
ABSTRACT:
A solid isocyanate-based composition having a glass transition temperature of at least 30° C. is produced by at least partially blocking the isocyanate groups of a polyisocyanate with a compound corresponding to the specified Formula I. This blocked isocyanate composition is useful in the production of powder coatings which are capable of being cured at temperatures of from 80 to 220° C.
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Progress in Organic Coating 43, (month unavailable) 2001, pp. 131-140, Douglas A. Wicks, Zeno W. Wicks Jr., “Multistep chemistry in thin films: the challenges of block isocyanates”.
Ann., 562 (month unavailable) 1949, S. Peterson, pp. 205-229, “Niedermolekulare Umsetzungsprodukte aliphatischer Diisocyanate”—see abstract attached.
Faecke Thomas
Rawlins James W.
Subramanian Ramesh
Vidra Eric J.
Bayer Materialscience LLC
Gil Joseph C.
Gorr Rachel
Whalen Lyndanne M.
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