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US 2019/0153236 A1Published application
Multilayer coating and process of preparing the multilayer coating
AssigneeDow Global Technologies LLC
InventorsJian LI, Liang ZHANG, Wei LI, Loganathan RAVISANKER
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Abstract
A multilayer coating comprising a primer coat layer, one or more elastic layer and a top coat layer and having good mechanical properties, and a method of preparing the multilayer coating.
Claims13
A multilayer coating comprising:
- (i) a primer coat layer comprising an aqueous primer composition comprising a styrene-acrylic emulsion (co)polymer;
- (ii) one or more elastic layer comprising a polymer mixture comprising an aqueous binder composition and vulcanized or crosslinked rubber, wherein the aqueous binder composition comprises:
- a first acrylic emulsion (co)polymer having a glass transition temperature of −5° C. or less;
- a second acrylic emulsion (co)polymer having a glass transition temperature of at least 15° C.;
- a crosslinking agent comprising a water-dispersible isocyanate composition;
- a foaming agent;
- wherein the vulcanized or crosslinked rubber comprises rubber powder having a sieve particle size less than 0.5 mm;
- and the weight ratio of the total solids weight of the acrylic emulsion (co)polymer to the total weight of the vulcanized or crosslinked rubber is from 1:1.5 to 1:0.2;
- and
- (iii) a top coat layer comprising an aqueous top coating composition comprising an acrylic emulsion (co)polymer.
7 more elements
Dependencies are inferred from the claim text.