Aqueous two-component coating compositions

Details Aqueous two-component coating compositions Aqueous two-component coating compositions

2006-08-15

2006-08-15

Wu, David W. (Department: 1713)

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...

C524S502000, C524S556000, C525S162000, C525S163000

Reexamination Certificate

active

07091278

ABSTRACT:
Aqueous coating compositions comprisingA) at least one water-dilutable (meth)acrylate copolymer with a hydroxyl value of 200 to 280 mg KOH/g andB) at least one polyisocyanate cross-linking agent with free isocyanate groups, the (meth)acrylate copolymers being the reaction product ofa) 10–50% by weight of at least one glycidyl ester derived from an aliphatic saturated monocarboxylic acid branched in alpha position,b) 0–60% by weight of at least one polyalkylene glycol(meth)acrylate,c) 0–45% by weight of at least one hydroxy-functional olefinic unsaturated monomer different from component b),d) 3–40% by weight of at least one olefinic unsaturated monocarboxylic acid,e) 0–40% by weight of at least one vinyl aromatic monomer andf) 0–40% by weight of other olefinic unsaturated monomers different from monomers a) to e),wherein component d) is used in molar excess of component a) and the % by weight of components a) to f) adding up to 100%.

REFERENCES:
patent: 5157069 (1992-10-01), Campbell
patent: 5539022 (1996-07-01), Schmidt et al.
patent: 5670600 (1997-09-01), Nienhaus et al.
patent: 5773513 (1998-06-01), Huybrechts et al.
patent: 6162886 (2000-12-01), Bremer et al.
patent: 4445355 (1996-06-01), None
patent: 0856533 (1998-08-01), None
patent: WO 95/02005 (1995-01-01), None
The European Search Report Application No. EP 04025888, Mailed: Mar. 10, 2005.

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