ACRYLIC DISPERSION-BASED COATING COMPOSITIONS
First Claim
Patent Images
1. A coating composition, comprising:
- a first copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene, said first copolymer having a Tg from −
50°
C. to −
23°
C. and being present in an amount of 10-50% by weight based on the total polymer content;
a second copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene, said second copolymer having a Tg from −
15°
C. to 25°
C. and being present in an amount of 50-90% by weight based on the total polymer content;
a filler comprising at least one pigment;
a pigment dispersing agent;
a thickener;
a defoamer;
a surfactant; and
watersaid coating composition having a viscosity of from 12,000 to 85,000 cps at 25°
C., a volume solids of greater than 50%, and a weight solids of greater than 60%,wherein the coating composition when applied as a film, dried and weathered for 1000 hours passes the mandrel bend test set forth in ASTM D 6083-05 at −
26°
C.
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Accused Products
Abstract
Coating compositions and methods for their preparation are described. The coating compositions can include a first copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene. The first copolymer can have a Tg from −50° C. to −23° C. and is present in an amount of 10-50% by weight based on the total polymer content. The coating compositions can also include a second copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene. The second copolymer can have a Tg from −15° C. to 25° C. and is present in an amount of 50-90% by weight based on the total polymer content. Further described herein are dried coatings, methods for coating a substrate, and methods for producing a coating.
11 Citations
23 Claims
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1. A coating composition, comprising:
-
a first copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene, said first copolymer having a Tg from −
50°
C. to −
23°
C. and being present in an amount of 10-50% by weight based on the total polymer content;a second copolymer produced by emulsion polymerization and derived from one or more monomers including one or more (meth)acrylates, one or more acid monomers, and optionally styrene, said second copolymer having a Tg from −
15°
C. to 25°
C. and being present in an amount of 50-90% by weight based on the total polymer content;a filler comprising at least one pigment; a pigment dispersing agent; a thickener; a defoamer; a surfactant; and water said coating composition having a viscosity of from 12,000 to 85,000 cps at 25°
C., a volume solids of greater than 50%, and a weight solids of greater than 60%,wherein the coating composition when applied as a film, dried and weathered for 1000 hours passes the mandrel bend test set forth in ASTM D 6083-05 at −
26°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14)
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9. The coating composition of claim 0, wherein at least one of the first copolymer and the second copolymer are further derived from at least one high Tg monomer selected from the group consisting of methyl methacrylate and styrene.
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13. (canceled)
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15. The coating composition of claim 0, wherein the quick setting additive includes polyethyleneimine.
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16. A composition, comprising:
-
a first copolymer produced by emulsion polymerization and derived from one or more monomers including one of more of butyl acrylate and 2-ethylhexyl acrylate, one or more acid monomers, a crosslinkable monomer, and optionally styrene or methyl methacrylate, said first copolymer having a Tg from −
36°
C. to −
23°
C.; anda second copolymer produced by emulsion polymerization and derived from one or more monomers including one of more of butyl acrylate and 2-ethylhexyl acrylate, one or more acid monomers, a crosslinkable monomer, and optionally styrene or methyl methacrylate, said second copolymer having a Tg from −
12°
C. to 0°
C.
-
- 17. The composition of claim 0, wherein the first copolymer and the second copolymer are dispersed in an aqueous medium.
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18. (canceled)
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21. The method of claim 0, wherein the surface is a roof surface.
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22. The method of claim 0, wherein the surface is a wall.
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23. (canceled)
Specification
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Current AssigneeBASF SE
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Original AssigneeArmin Burghart, Luke S. Egan, Randall Petrie, Robert Michael Calhoun
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InventorsEGAN, Luke S., CALHOUN, Robert Michael, BURGHART, Armin, PETRIE, Randall, BRENNAN, Randall
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current1/1
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CPC Class CodesC08L 2205/00 Polymer mixtures characteri...C08L 33/08 Homopolymers or copolymers ...C08L 35/06 Copolymers with vinyl aroma...C09D 125/14 with unsaturated estersC09D 133/08 Homopolymers or copolymers ...C09D 133/26 Homopolymers or copolymers ...C09D 135/06 Copolymers with vinyl aroma...C09D 179/06 Polyhydrazides; Polytriazol...
