Aqueous polymer dispersion for barrier coating

Details Aqueous polymer dispersion for barrier coating Aqueous polymer dispersion for barrier coating

2005-03-04

2010-10-26

Harlan, Robert D. (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...

C524S599000, C524S608000, C524S606000

Reexamination Certificate

active

07820754

ABSTRACT:
The invention relates to an aqueous polymer dispersion which can be obtained from a mixture of monomers comprising, in parts by weight:a) 100 of at least one ethylenically unsaturated monomer not comprising an ionic group,b) 0.5 to 15 of at least one ethylenically unsaturated monomer carrying at least one carboxyl and/or carboxylic anhydride functional group,c) at least one ethylenically unsaturated monomer carrying at least one second functionality selected from: phosphate, phosphonate or phosphinate, in an amount such that the ratio c/(b+c) varies from 0.05 to 0.4,d) 0 to 2 of at least one ethylenically unsaturated monomer carrying at least one alkoxysilane functional group,e) 0 to 5 of at least one ethylenically unsaturated monomer additionally carrying at least one active carbonyl functional group or an other aldhehyde-reactive functional group, such as an ureido derivative, or morpholine, imidazoline, oxazolidine, aziridine, or an aldhehyde-reactive amine function,f) 0 to 10, preferably 2 to 8, of at least one ethylenically unsaturated monomer carrying at least one functional group selected from hydroxyl and primary or secondary amine.The invention also relates to a preparation process, to a coating composition comprising the said dispersion and to a method of use in coatings for metal or plastic substrates, in particular corrosion-inhibiting coatings for metal substrates.

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