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
2004-06-10
2009-11-24
Woodward, Ana L (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S326300, C525S326400, C525S327400, C525S327600, C525S327700, C525S330300, C525S330400, C525S330500, C525S330700, C525S331900, C525S332300, C525S332500, C525S332700, C525S333200, C525S333300, C525S333600, C525S374000, C525S379000, C525S383000, C525S384000, C525S390000, C525S398000, C525S437000, C525S453000
Reexamination Certificate
active
07622531
ABSTRACT:
The present invention relates to a powder paint composition comprising at least (a) a thermosetting polymer having functional groups capable of reacting with β-hydroxyalkylamide units (b) a compound comprising β-hydroxyalkylamide units and (c) a deceleration agent, capable of reversibly blocking the functional groups of polymer (a). The deceleration agent is present in an amount sufficient to block at least 9% of the total amount of functional groups of polymer (a). The present invention relates also to the use of a specific amine compound as a deceleration agent in a powder paint composition.
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Raval et al, “β-Hydroxyalkyl amide type eco-firendly cross-linking agent for carboxylic acid functional acrylic resin for surface coating”, Paintindia, ISSN 0556-4409, 2005, vol. 55, No. 6, pp. 37-46.
Encyclopedia of Polymer Science, vol. 9, pp. 720-721 (2002).
Blank et al, “Catalysis of the epoxy-carboxyl reaction”, International Waterborne, High-solids and Powder Coatings Symposium; Feb. 21-23, 2001, New Orleans, LA.
Belder Eimbert Gerrit
Bolks Jurjen
Gehrels Coenraad Maarten
Urmanova Antonia
DSM IP Assets B.V.
Nixon & Vanderhye P.C.
Woodward Ana L
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