Water based dispersion to make coatings with increased MVTR barrier properties
AssigneeHenkel AG & Co. KGaA
InventorsArd de Zeeuw, Maria Tomé Jorge, Robin Leif Krug, Thomas Moeller, Juergen Stodt
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Abstract
The present invention relates to an aqueous dispersion, comprising or consisting of A) at least one cyclic olefin copolymer, B) at least one surfactant; optionally C) at least one adhesion promoter; optionally D) at least one film-forming resin; optionally E) at least one additive; and F) water. Additionally, the invention relates to methods of manufacturing the aqueous dispersion, to an article, which comprises at least one substrate and at least one coating layer obtained from the aqueous dispersion and applied onto the substrate; and to methods of improving MVTR of a substrate.
Claims14
An aqueous dispersion, comprising components:
- A) at least one cyclic olefin copolymer;
- B) at least one surfactant, different from A);
- C) at least one adhesion promoter, different from A) and B), present in an amount of 0.5 to 20 wt-%, based on solid content of the aqueous dispersion. and selected from resins comprising hydroxyl groups, carboxylic, phosphonic, phosphoric acid groups and combinations thereof;
- D) optionally at least one film forming resin, different from A), B) and C);
- E) optionally at least one additive, different from A), B), C) and D);
- and
- F) water.
An aqueous dispersion. comprising components:
- A) at least one cyclic olefin copolymer:
- B) at least one surfactant, different from A);
- C) optionally at least one adhesion promoter, different from A) and B);
- D) optionally at least one film forming resin. different from A), B) and C);
- E) optionally at least one additive, different from A), B), C) and D);
- and
- F) water;
- wherein Component A) the at least one cyclic olefin copolymer is a C5 to C12 cycloalkene copolymerized with at least one of ethylene, propylene, butylene, hexylene and octylene and present in an amount of 50-95 wt .- %, Component B) the at least one surfactant is present in an amount of 2-7 wt .- %, and comprises a mixture of an anionic surfactant and a non-ionic emulsifier;
- and Component C) the at least one adhesion promoter is present in an amount of 1- 7 wt .- % and comprises at least one polyester resin;
- all amounts being based on solid content of the aqueous dispersion.
Dependencies are inferred from the claim text.