Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-05-10
2005-05-10
Sellers, Robert (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C264S211130, C427S195000, C427S201000, C428S413000, C428S417000, C428S418000, C525S404000, C525S438000, C525S449000, C525S454000, C525S531000
Reexamination Certificate
active
06890997
ABSTRACT:
The present invention provides ultraviolet (UV) curable powders for powder coatings comprising one or more than one free radical curable epoxy resin and one or more than one second free radical curable resin, or, alternatively, one or more than one free radical curable unsaturated polyester resin in combination with one or more than one wax, and one or more than one free radical photoinitiator, wherein the coating powder has an average particle size of 5 to 25 microns. Further, the present invention provides a method for making a powder for thin (1.0 to 4.0 mil), smooth coatings having an average particle size of from 5 to 25 microns, the method preferably comprising jet milling dry powder or spray drying an aqueous emulsion, fluid mixture, or a supercritical suspension of a powder or of the composition for making the powder. Still further, the present invention provides a method of making a powder coating comprising applying the powder to a substrate, preferably hardwood, heat fusing the applied powder, and UV curing at a temperature and for an amount of time sufficient to form a powder coating having a low gloss finish.
REFERENCES:
patent: 4129488 (1978-12-01), McGinniss
patent: 5789039 (1998-08-01), Biller et al.
patent: 5824373 (1998-10-01), Biller et al.
patent: 5922473 (1999-07-01), Muthiah et al.
patent: 6005017 (1999-12-01), Daly et al.
patent: 6017593 (2000-01-01), Daly et al.
patent: 6028212 (2000-02-01), Shah et al.
patent: 6054250 (2000-04-01), Sitzmann et al.
patent: 6136882 (2000-10-01), Daly et al.
patent: 6235228 (2001-05-01), Nicholl et al.
patent: 6294610 (2001-09-01), Daly et al.
patent: 6348242 (2002-02-01), Daly et al.
patent: 6632481 (2003-10-01), Blum et al.
patent: 20030087029 (2003-05-01), Decker et al.
patent: 19835867 (2000-02-01), None
patent: 19835917 (2000-02-01), None
patent: 0 636 669 (1995-02-01), None
patent: 0844286 (1998-05-01), None
patent: 1129788 (2001-09-01), None
patent: WO 9836323 (1998-08-01), None
patent: WO0008109 (2000-02-01), None
patent: WO02100957 (2002-12-01), None
patent: WO03010248 (2003-02-01), None
Sitzmann, E. V. et al, “Combining vinyl ethers with acrylates for enhanced performance in UV cured coatings”; AlliedSignal Inc., Preprint of articles to be presented at RadTech'98 (Chicago) Apr. 1998.
Misev, T. A., van der Linde, R., “Powder coatings technology: new developments at the turn of the century”; Progress in Organic Coatings (34); Elsevier Science S.A.; pp. 160-168, 1998.
Daly Andrew T.
Kraski, Jr. Richard A.
Shah Navin
Merriam Andrew E. C.
Rohm and Haas Company
Sellers Robert
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