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US 2008/0166486 A1Published application
Flexible concrete waterproofer
AssigneeThe Sherwin-Williams Company
InventorsRobert E. Carcelli, Matthew J. Eschenauer
Life of this patent
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Abstract
A moisture resistant concrete coating composition comprising 20% to 30% by weight, based on the weight of the coating composition, of a water dispersible resin having a non-volatile materials content in the range of 40% to about 60%, an average particle size in the range of 80 nm to 400 nm, and a glass transition temperature in the range of −10° C. to 40° C.; 0.1% to 0.50% by weight of an alkoxysilane; 3.0% to 15% by weight of a mineral aggregate; and 25% to 55% by weight of an extender composition.
Claims19
A moisture resistant concrete coating composition comprising:
- 20% to 30% by weight, based on the weight of the coating composition, of a water dispersible resin having a non-volatile materials content in the range of 40% to about 60%, an average particle size in the range of 80 nm to 400 nm, and a glass transition temperature in the range of −10° C. to 40° C.;
- 0.1% to 0.50% by weight, based on the total weight of the coating composition, of an alkoxysilane;
- 3.0% to 15% by weight, based on the total weight of the coating composition, of a mineral aggregate, said mineral aggregate comprising:
- between 7% and 15% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 or less, and
- between 10% to 90% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 to 270, and
- less than 1% by weight of silica having a mesh size of 270 or more;
- and
- 25% to 55% by weight, based on the total weight of the coating composition, of an extender composition, said extender composition comprising:
- 4.0% to 8.0% by weight, based on the total weight of the extender, of at least one silica, wherein at least one silica has an average particle size in the range of 1 micron to 15 microns;
- 7.0% to 12.0% by weight, based on the total weight of the extender, of a silicate, wherein the silicate has an average particle size in the range of 1 micron to 40 microns;
- and
- 10% to 20% by weight, based on the total weight of the extender, of a second silica, wherein the second silica has an average particle size in the range of 1 micron to 110 microns.
9 more elements
An article comprising a moisture-resistant coating composition, wherein said moisture resistant coating composition comprises:
- 20% to 30% by weight, based on the weight of the coating composition, of a water dispersible resin having a non-volatile materials content in the range of 40% to about 60%, an average particle size in the range of 80 nm to 400 nm, and a glass transition temperature in the range of −10° C. to 40° C.;
- 0.1% to 0.50% by weight, based on the total weight of the coating composition, of an alkoxysilane;
- 3.0% to 15% by weight, based on the total weight of the coating composition, of a mineral aggregate, said mineral aggregate comprising:
- between 7% and 15% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 or less, and
- between 10% to 90% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 to 270, and
- less than 1% by weight of silica having a mesh size of 270 or more;
- and
- 25% to 55% by weight, based on the total weight of the coating composition, of an extender, said extender comprising
- 4.0% to 8.0% by weight, based on the total weight of the extender, of at least one silica, wherein at least one silica has an average particle size in the range of 1 micron to 15 microns;
- 7.0% to 12.0% by weight, based on the total weight of the extender, of a silicate, wherein the silicate has an average particle size in the range of 1 micron to 40 microns;
- and
- 10% to 20% by weight, based on the total weight of the extender, of a second silica, wherein the second silica has an average particle size in the range of 1 micron to 110 microns;
- and wherein the coating composition has a non-volatile materials content in the range of 55% to 75%.
10 more elements
A method of waterproofing a concrete structure, comprising:
- a) applying to a surface of the structure a coating composition comprising:
- 20% to 30% by weight, based on the weight of the coating composition, of a water dispersible resin having a non-volatile materials content in the range of 40% to about 60%, an average particle size in the range of 80 nm to 400 nm, and a glass transition temperature in the range of −10° C. to 40° C.;
- 0.1% to 0.50% by weight, based on the total weight of the coating composition, of an alkoxysilane;
- 3.0% to 15% by weight, based on the total weight of the coating composition, of a mineral aggregate, said mineral aggregate comprising:
- between 7% and 15% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 or less, and
- between 10% to 90% by weight silica, based on the total weight of the mineral aggregate, having a mesh size of 40 to 270, and
- less than 1% by weight of silica having a mesh size of 270 or more;
- and
- 25% to 55% by weight, based on the total weight of the coating composition, of an extender, said extender comprising
- 4.0% to 8.0% by weight, based on the total weight of the extender, of at least one silica, wherein at least one silica has an average particle size in the range of 1 micron to 15 microns;
- 7.0% to 12.0% by weight, based on the total weight of the extender, of a silicate, wherein the silicate has an average particle size in the range of 1 micron to 40 microns;
- and
- 10% to 20% by weight, based on the total weight of the extender, of a second silica, wherein the second silica has an average particle size in the range of 1 micron to 110 microns;
- (b) drying the coating composition under ambient conditions on the structure to form a continuous film.
11 more elements
Dependencies are inferred from the claim text.