Coating composition, a process of producing a coating composition, a coated article, and a method of forming such articles

Patent metadata

Field	Value
Publication number	US-10287072-B2
Application number	US-201816053745-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Dec 12, 2008
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A coating composition which comprises a dispersion comprising: (a) a core comprising a base polymer; (b) a shell at least partially surrounding said core, wherein said shell comprising a polar polymeric stabilizing agent; and (c) one or more hydrophobic particulate fillers embedded at least partially in said shell is provided.

First claim

We claim:

1. A coating composition comprising:
a dispersion comprising:
a core comprising a base polymer wherein the base polymer is ethylene/acrylic acid or ethylene/methacrylic acid;
a shell at least partially surrounding said core, wherein said shell comprising a polar polymeric stabilizing agent; and
at least one or more hydrophobic particulate fillers having a particle size diameter in the range of from 5 nm to 250 nm at least partially embedded in said shell;

wherein the polar polymeric stabilizing agent is neutralized from 50 to 90 percent.

2. The coating composition of claim 1 , wherein the dispersion comprises 1 to 50 percent by weight of one or more hydrophobic particulate fillers, based on the total solid weight of the dispersion, and wherein said one or more hydrophobic particulate fillers are selected from the group consisting of an inorganic substance, an organic substance, and combinations thereof.

3. The coating composition of claim 1 , wherein the inorganic substance is selected from the group consisting of aluminum hydroxide, aragonite, barium sulphate, calcite, calcium sulphate, dolomite, magnesium hydroxide, magnesium carbonate, magnesite, ground calcium carbonate, precipitated calcium carbonate, titanium dioxide (for example, rutile and/or anatase), satin white, zinc oxide, silica, alumina trihydrate, mica, talc, clay, calcined clay, diatomaceous earth, vaterite, and combination thereof.

4. The coating composition of claim 1 , wherein the dispersion has a viscosity in the range of from less than 5,000 cP.

5. The coating composition of claim 1 , wherein the dispersion has a solid average particle size distribution in the range of from 0.2 to 2μm, and the dispersion has a pH in the range of from 8 to 12.

6. The coating composition of claim 1 , wherein the coating composition further comprises one or more antifoam agents, one or more wetting agents, one or more antimicrobial agents, one or more crosslinkers, one or more rheology modifier agents, one or more auxiliary stabilizing agents, one or more antiblocking agents, one or more colorants, and one or more additional fillers.

Assignees

• Dow Global Technologies Llc

Inventors

• Vyorykka Jouko
• Malotky David L
• Wevers Ronald

Classifications

• C08F255/02

  on to polymers of olefins having two or three carbon atoms · CPC title

• C08F289/00

  Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00 · CPC title

• C09D7/80

  Processes for incorporating ingredients · CPC title

• C09D7/67

  Particle size smaller than 100 nm · CPC title

• C08F285/00

  Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers · CPC title